diff --git a/backthread.cpp b/backthread.cpp
index 55f1bda7..f4db65fe 100644
--- a/backthread.cpp
+++ b/backthread.cpp
@@ -17,30 +17,37 @@
  */
 
 #include "backthread.h"
+#include "utils.h"
 
 #include <unistd.h>
 #include <stdlib.h>
+#include <sys/syslog.h>
+#include <sys/types.h>
+#include <sys/wait.h>
 
 #include <QFile>
 #include <QRegExp>
 
 BackThread::BackThread(QObject *parent) : QObject(parent){
-    cmd = new QProcess(this);
-    connect(cmd , SIGNAL(readyReadStandardOutput()) , this , SLOT(on_readoutput()));
-    connect(cmd , SIGNAL(readyReadStandardError()) , this , SLOT(on_readerror()));
-    cmd->start("bash");
-    cmd->waitForStarted();
+    cmdConnWifi = new QProcess(this);
+    connect(cmdConnWifi , SIGNAL(readyReadStandardOutput()) , this , SLOT(on_readoutput()));
+    connect(cmdConnWifi , SIGNAL(readyReadStandardError()) , this , SLOT(on_readerror()));
+    cmdConnWifi->start("bash");
+    cmdConnWifi->waitForStarted();
 }
 
 BackThread::~BackThread()
 {
-    cmd->close();
+    cmdConnWifi->close();
 }
 
 IFace* BackThread::execGetIface(){
     IFace *iface = new IFace();
     QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli -f TYPE,DEVICE,STATE device > /tmp/kylin-nm-iface";
-    system(cmd.toUtf8().data());
+    Utils::m_system(cmd.toUtf8().data());
+
+//    int status = system(cmd.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device' in function 'execGetIface' failed");}
 
     QFile file("/tmp/kylin-nm-iface");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
@@ -98,7 +105,11 @@ IFace* BackThread::execGetIface(){
 }
 
 void BackThread::execEnNet(){
-    system("nmcli networking on");
+    char *chr = "nmcli networking on";
+    Utils::m_system(chr);
+
+//    int status = system("nmcli networking on");
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli networking on' in function 'execEnNet' failed");}
     while(1){
         if (execGetIface()->lstate != 2){
             sleep(3);
@@ -112,7 +123,11 @@ void BackThread::execEnNet(){
 
 void BackThread::execDisNet(){
     if (execGetIface()->wstate != 2){
-        system("nmcli radio wifi off");
+        char *chr = "nmcli radio wifi off";
+        Utils::m_system(chr);
+
+//        int status = system("nmcli radio wifi off");
+//        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli radio wifi off' in function 'execDisNet' failed");}
         while(1){
             if (execGetIface()->wstate == 2){
                 emit disWifiDone();
@@ -122,7 +137,11 @@ void BackThread::execDisNet(){
             sleep(1);
         }
     }
-    system("nmcli networking off");
+
+    char *chr1 = "nmcli networking off";
+    Utils::m_system(chr1);
+//    int status1 = system("nmcli networking off");
+//    if (status1 != 0){ syslog(LOG_ERR, "execute 'nmcli networking off' in function 'execDisNet' failed");}
     while(1){
         if (execGetIface()->lstate == 2){
             emit disNetDone();
@@ -135,7 +154,10 @@ void BackThread::execDisNet(){
 
 void BackThread::execEnWifi(){
     if (execGetIface()->lstate == 2){
-        system("nmcli networking on");
+        char *chr = "nmcli networking on";
+        Utils::m_system(chr);
+//        int status = system("nmcli networking on");
+//        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli networking on' in function 'execEnWifi' failed");}
         while(1){
             if (execGetIface()->lstate != 2){
                 emit launchLanDone();
@@ -144,7 +166,11 @@ void BackThread::execEnWifi(){
             sleep(1);
         }
     }
-    system("nmcli radio wifi on");
+
+    char *chr1 = "nmcli radio wifi on";
+    Utils::m_system(chr1);
+//    int status1 = system("nmcli radio wifi on");
+//    if (status1 != 0){ syslog(LOG_ERR, "execute 'nmcli radio wifi on' in function 'execEnWifi' failed");}
     while(1){
         if (execGetIface()->wstate != 2){
             KylinDBus objKyDbus;
@@ -163,7 +189,10 @@ void BackThread::execEnWifi(){
 }
 
 void BackThread::execDisWifi(){
-    system("nmcli radio wifi off");
+    char *chr = "nmcli radio wifi off";
+    Utils::m_system(chr);
+//    int status = system("nmcli radio wifi off");
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli radio wifi off' in function 'execDisWifi' failed");}
     while(1){
         if (execGetIface()->wstate == 2){
             emit disWifiDone();
@@ -175,12 +204,14 @@ void BackThread::execDisWifi(){
 }
 
 void BackThread::execConnLan(QString connName){
-    lanDelete(); //连接前先断开已经连接的有线网
+    disConnLanOrWifi("ethernet");
 
     KylinDBus objKyDbus;
     if(objKyDbus.isWiredCableOn){
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli connection up '" + connName + "'";
-        system(cmd.toUtf8().data());
+        Utils::m_system(cmd.toUtf8().data());
+//        int status = system(cmd.toUtf8().data());
+//        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection up' in function 'execConnLan' failed");}
         qDebug()<<"debug: in function execConnLan, wired net state is: "<<QString::number(execGetIface()->lstate);
         syslog(LOG_DEBUG, "In function execConnLan, wired net state is: %d", execGetIface()->lstate);
         emit connDone(0);
@@ -192,10 +223,12 @@ void BackThread::execConnLan(QString connName){
 }
 
 void BackThread::execConnWifiPWD(QString connName, QString password){
-    wifiDelete(); //连接前先断开已经连接的wifi
+    disConnLanOrWifi("wifi");
 
-    QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli device wifi connect '" + connName + "' password '" + password + "' > /tmp/kylin-nm-btoutput";
-    system(cmd.toUtf8().data());
+    QString cmdStr = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli device wifi connect '" + connName + "' password '" + password + "' > /tmp/kylin-nm-btoutput";
+    Utils::m_system(cmdStr.toUtf8().data());
+//    int status =  system(cmdStr.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'execConnWifiPWD' failed");}
 
     QFile file("/tmp/kylin-nm-btoutput");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
@@ -212,7 +245,10 @@ void BackThread::execConnWifiPWD(QString connName, QString password){
     }else{
         QString txt(tr("Confirm your Wi-Fi password"));
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "...' -t 3800";
-        system(cmd.toUtf8().data());
+        Utils::m_system(cmd.toUtf8().data());
+//        int status1 = system(cmd.toUtf8().data());
+//        if (status1 != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'execConnWifiPWD' failed");}
+
         emit connDone(1);
     }
 
@@ -220,16 +256,16 @@ void BackThread::execConnWifiPWD(QString connName, QString password){
 }
 
 void BackThread::execConnWifi(QString connName){
-    wifiDelete(); //连接前先断开已经连接的wifi
+    disConnLanOrWifi("wifi");
 
     QString cmdStr = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli connection up '" + connName + "'\n";
-    cmd->write(cmdStr.toUtf8().data());
+    cmdConnWifi->write(cmdStr.toUtf8().data());
 }
 
 void BackThread::on_readoutput()
 {
-    QString str = cmd->readAllStandardOutput();
-    cmd->close();
+    QString str = cmdConnWifi->readAllStandardOutput();
+    cmdConnWifi->close();
     qDebug()<<"on_readoutput:  "<< str;
     if(str.indexOf("successfully") != -1){
         emit connDone(0);
@@ -245,8 +281,8 @@ void BackThread::on_readoutput()
 }
 void BackThread::on_readerror()
 {
-    QString str = cmd->readAllStandardError();
-    cmd->close();
+    QString str = cmdConnWifi->readAllStandardError();
+    cmdConnWifi->close();
     qDebug()<<"on_readerror: "<< str;
     if(str.indexOf("successfully") != -1){
         emit connDone(0);
@@ -261,11 +297,12 @@ void BackThread::on_readerror()
 
 QString BackThread::getConnProp(QString connName){
     QString cmd = "nmcli connection show '" + connName + "' > /tmp/kylin-nm-connprop";
-    system(cmd.toUtf8().data());
+    Utils::m_system(cmd.toUtf8().data());
+//    int status = system(cmd.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'getConnProp' failed");}
 
     QFile file("/tmp/kylin-nm-connprop");
-    if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
-    {
+    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         syslog(LOG_ERR, "Can't open the file /tmp/kylin-nm-connprop!");
         qDebug()<<"Can't open the file /tmp/kylin-nm-connprop!"<<endl;
     }
@@ -314,7 +351,9 @@ QString BackThread::getConnProp(QString connName){
 
 bool BackThread::execChkWifiExist(QString connName){
     QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli connection show '" + connName + "' > /tmp/kylin-nm-chkwifiexist";
-    system(cmd.toUtf8().data());
+    Utils::m_system(cmd.toUtf8().data());
+//    int status = system(cmd.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'execChkWifiExist' failed");}
 
     QFile file("/tmp/kylin-nm-chkwifiexist");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
@@ -334,7 +373,9 @@ bool BackThread::execChkWifiExist(QString connName){
 
 QString BackThread::execChkLanWidth(QString ethName){
     QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';ethtool '" + ethName + "' | grep Speed > /tmp/kylin-nm-bandwidth";
-    system(cmd.toUtf8().data());
+    Utils::m_system(cmd.toUtf8().data());
+//    int status = system(cmd.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'ethtool' in function 'execChkLanWidth' failed");}
 
     QFile file("/tmp/kylin-nm-bandwidth");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
@@ -354,30 +395,37 @@ QString BackThread::execChkLanWidth(QString ethName){
     return rtn.trimmed();
 }
 
-void BackThread::redundantNetDeleted()
+void BackThread::disConnSparedNetSlot(QString type)
 {
     sleep(1);
-    wifiDelete();
+    if (type == "wifi"){
+        disConnLanOrWifi("wifi");
+    } else if(type == "ethernet") {
+        disConnLanOrWifi("ethernet");
+    }
+
 
     emit disFinish();
     emit ttFinish();
 }
 
-void BackThread::wifiDelete()
+void BackThread::disConnLanOrWifi(QString type)
 {
     QString strSlist;
-    system("nmcli connection show -active>/tmp/kylin-nm-connshow");
-    QFile file("/tmp/kylin-nm-connshow");
-    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
-        syslog(LOG_ERR, "Can't open the file /tmp/kylin-nm-connshow!");
-        qDebug()<<"Can't open the file /tmp/kylin-nm-connshow!";
+    const int BUF_SIZE = 1024;
+    char buf[BUF_SIZE];
+
+    FILE * p_file = NULL;
+
+    p_file = popen("nmcli connection show -active", "r");
+    if (!p_file) {
+        syslog(LOG_ERR, "Error occured when popen cmd 'nmcli connection show'");
+        qDebug()<<"Error occured when popen cmd 'nmcli connection show";
     }
 
-    QString txt = file.readAll();
-    QStringList txtLine = txt.split("\n");
-    file.close();
-    foreach (QString line, txtLine) {
-        if(line.indexOf("wifi") != -1){
+    while (fgets(buf, BUF_SIZE, p_file) != NULL) {
+        QString line(buf);
+        if(line.indexOf(type) != -1){
             QStringList subLine = line.split(" ");
             if (subLine[1].size() == 1){
                 strSlist =  subLine[0]+ " " + subLine[1];
@@ -386,31 +434,6 @@ void BackThread::wifiDelete()
             }
             kylin_network_set_con_down(strSlist.toUtf8().data());
         }
-    } //end foreach
-}
-
-void BackThread::lanDelete()
-{
-    QString strSlist;
-    system("nmcli connection show -active>/tmp/kylin-nm-connshow");
-    QFile file("/tmp/kylin-nm-connshow");
-    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
-        syslog(LOG_DEBUG, "Can't open the file /tmp/kylin-nm-connshow!");
-        qDebug()<<"Can't open the file /tmp/kylin-nm-connshow!";
     }
-
-    QString txt = file.readAll();
-    QStringList txtLine = txt.split("\n");
-    file.close();
-    foreach (QString line, txtLine) {
-        if(line.indexOf("ethernet") != -1){
-            QStringList subLine = line.split(" ");
-            if (subLine[1].size() == 1){
-                strSlist =  subLine[0]+ " " + subLine[1];
-            }else {
-                strSlist =  subLine[0];
-            }
-            kylin_network_set_con_down(strSlist.toUtf8().data());
-        }
-    } //end foreach
+    pclose(p_file);
 }
diff --git a/backthread.h b/backthread.h
index d37fb91d..212b1a3c 100644
--- a/backthread.h
+++ b/backthread.h
@@ -22,7 +22,6 @@
 #include "kylin-dbus-interface.h"
 #include "kylin-network-interface.h"
 
-#include <sys/syslog.h>
 #include <QObject>
 #include <QDebug>
 #include <QTimer>
@@ -50,7 +49,22 @@ public:
     QString getConnProp(QString connName);
     bool execChkWifiExist(QString connName);
     QString execChkLanWidth(QString ethName);
-    QProcess *cmd;
+    QProcess *cmdConnWifi;
+
+public slots:
+    void execEnNet();
+    void execDisNet();
+    void execEnWifi();
+    void execDisWifi();
+    void execConnLan(QString connName);
+    void execConnWifi(QString connName);
+    void execConnWifiPWD(QString connName, QString password);
+
+    void disConnSparedNetSlot(QString type);
+    void disConnLanOrWifi(QString type);
+
+    void on_readoutput();
+    void on_readerror();
 
 signals:
     void enNetDone();
@@ -64,20 +78,6 @@ signals:
     void btFinish();
     void disFinish();
     void ttFinish();
-
-public slots:
-    void execEnNet();
-    void execDisNet();
-    void execEnWifi();
-    void execDisWifi();
-    void execConnLan(QString connName);
-    void execConnWifi(QString connName);
-    void execConnWifiPWD(QString connName, QString password);
-    void redundantNetDeleted();
-    void lanDelete();
-    void wifiDelete();
-    void on_readoutput();
-    void on_readerror();
 };
 
 #endif // BACKTHREAD_H
diff --git a/confform.cpp b/confform.cpp
index 6e396097..9ad1b98e 100644
--- a/confform.cpp
+++ b/confform.cpp
@@ -20,7 +20,9 @@
 #include "ui_confform.h"
 #include "kylin-network-interface.h"
 #include "backthread.h"
+#include "utils.h"
 
+#include <sys/types.h>
 #include <unistd.h>
 #include <stdlib.h>
 
@@ -70,7 +72,7 @@ ConfForm::ConfForm(QWidget *parent) :
     ui->btnOk->setText(tr("Save"));//"保存"
     ui->btnCreate->setText(tr("Ok"));//"确定"
 
-//    ui->centralWidget->setStyleSheet("#centralWidget{border:1px solid #297a97;background-color:#ffffff;}");
+    // ui->centralWidget->setStyleSheet("#centralWidget{border:1px solid #297a97;background-color:#ffffff;}");
     ui->wdHead->setStyleSheet("#wdHead{border:none}");
     ui->wgManual->setStyleSheet("#wgManual{border:none}");
     ui->wdBottom->setStyleSheet("#wdBottom{border:none}");
@@ -191,9 +193,12 @@ void ConfForm::setProp(QString connName, QString v4method, QString addr, QString
 void ConfForm::on_btnCreate_clicked()
 {
     QString cmdStr = "nmcli connection add con-name '" + ui->leName->text() + "' type ethernet";
-    system(cmdStr.toUtf8().data());
+    Utils::m_system(cmdStr.toUtf8().data());
+//    int status = system(cmdStr.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection add con-name' in function 'on_btnCreate_clicked' failed");}
 
     if(ui->cbType->currentIndex() == 1){
+        //config the ipv4 and netmask and gateway if select Manual
         this->on_btnOk_clicked();
     }
 
@@ -234,11 +239,15 @@ void ConfForm::on_btnOk_clicked()
     if(this->isActConf == true){
         //QString cmd = "/usr/share/kylin-nm/shell/connup.sh '" + ui->leName->text() + "'";
         QString cmd = "nmcli connection up '" + ui->leName->text() + "'";
-        system(cmd.toUtf8().data());
+        Utils::m_system(cmd.toUtf8().data());
+//        int status = system(cmd.toUtf8().data());
+//        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection up' in function 'on_btnOk_clicked' failed");}
 
         QString txt(tr("New settings already effective"));
         cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "' -t 3800";
-        system(cmd.toUtf8().data());
+        Utils::m_system(cmd.toUtf8().data());
+//        int status1 = system(cmd.toUtf8().data());
+//        if (status1 != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'on_btnOk_clicked' failed");}
     }
 }
 
diff --git a/hot-spot/dlghotspotcreate.cpp b/hot-spot/dlghotspotcreate.cpp
index 70d24f00..322bb84e 100644
--- a/hot-spot/dlghotspotcreate.cpp
+++ b/hot-spot/dlghotspotcreate.cpp
@@ -18,6 +18,7 @@
 
 #include "dlghotspotcreate.h"
 #include "ui_dlghotspotcreate.h"
+#include "utils.h"
 
 DlgHotspotCreate::DlgHotspotCreate(QString wiFiCardName, QWidget *parent) :
     wirelessCardName(wiFiCardName),
@@ -97,7 +98,10 @@ void DlgHotspotCreate::on_btnOk_clicked()
     }else{
         str = "nmcli device wifi hotspot ifname " + wirelessCardName + " con-name " + ui->leNetName->text() + " ssid " + ui->leNetName->text() + " password " + ui->lePassword->text();
     }
-    system(str.toUtf8().data());
+    Utils::m_system(str.toUtf8().data());
+//    int status = system(str.toUtf8().data());
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi hotspot' in function 'on_btnOk_clicked' failed");}
+
     this->close();
     emit updateHotspotList();
 }
diff --git a/hot-spot/dlghotspotcreate.h b/hot-spot/dlghotspotcreate.h
index b819fc54..f935a71e 100644
--- a/hot-spot/dlghotspotcreate.h
+++ b/hot-spot/dlghotspotcreate.h
@@ -1,6 +1,8 @@
 #ifndef DLGHOTSPOTCREATE_H
 #define DLGHOTSPOTCREATE_H
 
+#include <sys/syslog.h>
+
 #include <QDialog>
 #include <QMouseEvent>
 #include <QDebug>
diff --git a/ksimplenm.cpp b/ksimplenm.cpp
index 2a8f85a3..990b5e1d 100644
--- a/ksimplenm.cpp
+++ b/ksimplenm.cpp
@@ -17,9 +17,11 @@
  */
 
 #include "ksimplenm.h"
+
 #include <stdio.h>
 #include <unistd.h>
 #include <QThread>
+
 #define MAX_LEN 2048
 #define MAX_PATH 1024
 
diff --git a/ksimplenm.h b/ksimplenm.h
index ccd2875f..bb165847 100644
--- a/ksimplenm.h
+++ b/ksimplenm.h
@@ -20,6 +20,7 @@
 #define KSIMPLENM_H
 
 #include <sys/syslog.h>
+
 #include <QObject>
 #include <QProcess>
 #include <QDebug>
diff --git a/kylin-dbus-interface.cpp b/kylin-dbus-interface.cpp
index ff7df9b9..6c188652 100644
--- a/kylin-dbus-interface.cpp
+++ b/kylin-dbus-interface.cpp
@@ -18,8 +18,10 @@
 
 #include "kylin-dbus-interface.h"
 #include "mainwindow.h"
-#include <QTextCodec>
+
 #include <vector>
+
+#include <QTextCodec>
 #include <QByteArray>
 
 
@@ -466,20 +468,20 @@ bool KylinDBus::getSwitchStatus(QString key){
     return res;
 }
 
-void KylinDBus::wifiSwitchSlot(bool signal){
+void KylinDBus::setWifiSwitchState(bool signal){
     if(!m_gsettings) {
         return ;
     }
 
     const QStringList list = m_gsettings->keys();
 
-    if (!list.contains("switch")) {
+    if (!list.contains("switchor")) {
         return ;
     }
-    m_gsettings->set("switch",signal);
+    m_gsettings->set("switchor",signal);
 }
 
-void KylinDBus::wifiCardSlot(bool signal)
+void KylinDBus::setWifiCardState(bool signal)
 {
     if(!m_gsettings) {
         return ;
diff --git a/kylin-dbus-interface.h b/kylin-dbus-interface.h
index 31eeb421..815bbfd9 100644
--- a/kylin-dbus-interface.h
+++ b/kylin-dbus-interface.h
@@ -2,6 +2,7 @@
 #define KYLINDBUSINTERFACE_H
 
 #include <sys/syslog.h>
+
 #include <QObject>
 #include <QDebug>
 #include <QtDBus/QDBusConnection>
@@ -31,8 +32,8 @@ public:
 
     void getWifiSwitchState();
     bool getSwitchStatus(QString key);
-    void wifiSwitchSlot(bool signal);
-    void wifiCardSlot(bool signal);
+    void setWifiSwitchState(bool signal);
+    void setWifiCardState(bool signal);
 
     QDBusObjectPath wiredPath;
     QDBusObjectPath wirelessPath;
diff --git a/kylin-network-interface.c b/kylin-network-interface.c
index 31178b6d..c5715de4 100644
--- a/kylin-network-interface.c
+++ b/kylin-network-interface.c
@@ -16,19 +16,19 @@
  *
  */
 
+#include "kylin-network-interface.h"
+
 #include <netinet/in.h>
 #include <sys/socket.h>
 #include <sys/ioctl.h>
 #include <arpa/inet.h>
-#include <unistd.h>
-#include <stdlib.h>
 #include <linux/route.h>
 #include <netinet/ether.h>
 #include <net/ethernet.h>
-#include<sys/types.h>
-#include<sys/stat.h>
-#include<fcntl.h>
-#include "kylin-network-interface.h"
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <sys/syslog.h>
+
 
 //获取网络接口名
 ifname *kylin_network_get_ifacename()
@@ -58,19 +58,19 @@ ifname *kylin_network_get_ifacename()
     //结构体指针ifreq指向buf，即ifconf.ifc_buf
     ifreq = (struct ifreq*)buf;
     int number=ifconf.ifc_len/sizeof(struct ifreq);
-//    printf("%d\n",number);
+    // printf("%d\n",number);
 
     ifname *ifn=(ifname *)malloc(sizeof(ifname)*(number+1));
 
     for(i = number; i>0; i--)
     {
-//        printf("name = [%s] \n",ifreq->ifr_name);
+        // printf("name = [%s] \n",ifreq->ifr_name);
 
         int j=number-i;
         ifn[j].if_name=(char *)malloc(sizeof(char)*10);
         strcpy(ifn[j].if_name,ifreq->ifr_name);
-//        ifn[j].if_name=ifreq->ifr_name;
-//        printf("if_name[%d]:%s\n",j,if_name[j]);
+        // ifn[j].if_name=ifreq->ifr_name;
+        // printf("if_name[%d]:%s\n",j,if_name[j]);
 
         ifreq++;
     }
@@ -83,7 +83,8 @@ ifname *kylin_network_get_ifacename()
 //获取所有网络连接
 conlist *kylin_network_get_conlist_info()
 {
-    system("nmcli connection show > /tmp/conlist.txt");
+    int status = system("nmcli connection show > /tmp/conlist.txt");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'kylin_network_get_conlist_info' failed");}
     char *filename="/tmp/conlist.txt";
 
     FILE *confp;
@@ -100,7 +101,7 @@ conlist *kylin_network_get_conlist_info()
         fgets(ConStrLine,1024,confp);
         connum++;
     }
-//    printf("%d\n",connum);
+    // printf("%d\n",connum);
     fclose(confp);
     conlist *clist=(conlist *)malloc(sizeof(conlist)*connum);
 
@@ -134,12 +135,12 @@ conlist *kylin_network_get_conlist_info()
             num++;
         }
 
-//        printf("连接名称长度：%d\n",num);
+        // printf("连接名称长度：%d\n",num);
         clist[count].con_name=(char *)malloc(sizeof(char)*(num+1));
         strncpy(conname,StrLine,num+1);
         conname[num]='\0';
         strncpy(clist[count].con_name,conname,num+1);
-//        printf("%s\n",clist[count].con_name);
+        // printf("%s\n",clist[count].con_name);
 
         //截取连接类型
         char type[100];
@@ -173,7 +174,7 @@ conlist *kylin_network_get_conlist_info()
         strncpy(type,index1+2,num1+1);
         type[num1]='\0';
         strncpy(clist[count].type,type,num1+1);
-//        printf("%s\n",clist[count].type);
+        // printf("%s\n",clist[count].type);
         count++;
     }
     fclose(fp);
@@ -187,7 +188,8 @@ conlist *kylin_network_get_conlist_info()
 //获取当前活动网络连接
 activecon *kylin_network_get_activecon_info()
 {
-    system("nmcli connection show -active > /tmp/activecon.txt");
+    int status = system("nmcli connection show -active > /tmp/activecon.txt");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show -active' in function 'kylin_network_get_activecon_info' failed");}
     char *filename="/tmp/activecon.txt";
 
     FILE *activefp;
@@ -204,7 +206,7 @@ activecon *kylin_network_get_activecon_info()
         fgets(activeStrLine,1024,activefp);
         activenum++;
     }
-//    printf("%d\n",activenum);
+    // printf("%d\n",activenum);
     fclose(activefp);
     activecon *activelist=(activecon *)malloc(sizeof(activecon)*activenum);
 
@@ -238,12 +240,12 @@ activecon *kylin_network_get_activecon_info()
             num++;
         }
 
-//        printf("连接名称长度：%d\n",num);
+        // printf("连接名称长度：%d\n",num);
         activelist[count].con_name=(char *)malloc(sizeof(char)*(num+1));
         strncpy(conname,StrLine,num+1);
         conname[num]='\0';
         strncpy(activelist[count].con_name,conname,num+1);
-//        printf("%s\n",activelist[count].con_name);
+        // printf("%s\n",activelist[count].con_name);
 
         //截取连接类型
         char type[100];
@@ -277,7 +279,7 @@ activecon *kylin_network_get_activecon_info()
         strncpy(type,index1+2,num1+1);
         type[num1]='\0';
         strncpy(activelist[count].type,type,num1+1);
-//        printf("%s\n",activelist[count].type);
+        // printf("%s\n",activelist[count].type);
 
         //截取连接所属设备
         char *index3=index2;
@@ -301,7 +303,7 @@ activecon *kylin_network_get_activecon_info()
         strncpy(dev,index3+1,num2+1);
         dev[num2]='\0';
         strncpy(activelist[count].dev,dev,num2+1);
-//        printf("%s\n",activelist[count].dev);
+        // printf("%s\n",activelist[count].dev);
         count++;
     }
     fclose(fp);
@@ -319,7 +321,8 @@ void kylin_network_create_new_ethernet(char *con_name,char *if_name)
     char str[100];
     char *net_type="ethernet";
     sprintf(str,"nmcli connection add con-name %s ifname %s type %s",con_name,if_name,net_type);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection add con-name' in function 'kylin_network_create_new_ethernet' failed");}
 }
 
 // 创建新的wifi连接配置
@@ -328,7 +331,8 @@ void kylin_network_create_new_wifi(char *con_name, char *if_name)
     char str[200];
     sprintf(str, "nmcli connection add con-name '%s' ifname '%s' type wifi ssid '%s'",
             con_name, if_name, con_name);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection add con-name' in function 'kylin_network_create_new_wifi' failed");}
 }
 
 //删除以太网连接
@@ -336,7 +340,8 @@ void kylin_network_del_ethernet_con(char *con_name)
 {
     char str[100];
     sprintf(str,"nmcli connection delete %s",con_name);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection delete' in function 'kylin_network_del_ethernet_con' failed");}
 }
 
 //设置动态分配ip
@@ -345,7 +350,8 @@ void kylin_network_set_automethod(char *con_name)
     char str[100];
     char *automethod="auto";
     sprintf(str,"nmcli connection modify '%s' ipv4.method %s",con_name,automethod);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_set_automethod' failed");}
 }
 
 //设置手动分配ip
@@ -354,7 +360,8 @@ void kylin_network_set_manualmethod(char *con_name,char *ip)
     char str[100];
     char *method="manual";
     sprintf(str,"nmcli connection modify '%s' ipv4.method %s ipv4.address %s",con_name,method,ip);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_set_manualmethod' failed");}
 }
 
 // 设置手动分配all
@@ -362,7 +369,8 @@ void kylin_network_set_manualall(char *con_name, char *addr, char *mask, char *g
     char str[200];
     sprintf(str, "nmcli connection modify '%s' ipv4.method manual ipv4.address %s/%s ipv4.gateway %s ipv4.dns %s",
             con_name, addr, mask, gateway, dns);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_set_manualall' failed");}
 }
 
 //设置是否自动连接
@@ -378,7 +386,8 @@ void kylin_network_set_autoconnect(char *con_name,bool autocon)
         char *ac="yes";
         sprintf(str,"nmcli connection modify %s connection.autoconnect %s",con_name,ac);
     }
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_set_autoconnect' failed");}
 }
 
 //修改ip
@@ -386,7 +395,8 @@ void kylin_network_mod_ip(char *con_name,char *ip)
 {
     char str[100];
     sprintf(str,"nmcli connection modify %s ipv4.address %s",con_name,ip);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_mod_ip' failed");}
 }
 
 //修改网关
@@ -394,7 +404,8 @@ void kylin_network_mod_gateway(char *con_name,char *gw)
 {
     char str[100];
     sprintf(str,"nmcli connection modify %s ipv4.gateway %s",con_name,gw);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_mod_gateway' failed");}
 }
 
 //修改dns
@@ -402,7 +413,8 @@ void kylin_network_mod_dns(char *con_name,char *dns)
 {
     char str[100];
     sprintf(str,"nmcli connection modify %s ipv4.dns %s",con_name,dns);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection modify' in function 'kylin_network_mod_dns' failed");}
 }
 
 //连接以太网
@@ -410,7 +422,8 @@ void kylin_network_set_con_up(char *con_name)
 {
     char str[100];
     sprintf(str,"nmcli connection up '%s'",con_name);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection up' in function 'kylin_network_set_con_up' failed");}
 }
 
 //断开以太网
@@ -418,7 +431,8 @@ void kylin_network_set_con_down(char *con_name)
 {
     char str[100];
     sprintf(str,"nmcli connection down '%s'",con_name);
-    system(str);
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection down' in function 'kylin_network_set_con_down' failed");}
 }
 
 //连接wifi
@@ -426,8 +440,8 @@ void kylin_network_set_wifi_up(char *con_name,char *passwd)
 {
     char str[100];
     sprintf(str,"export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli device wifi connect '%s' password '%s'", con_name,passwd);
-    system(str);
-
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'kylin_network_set_wifi_up' failed");}
 }
 
 //断开wifi连接
@@ -435,14 +449,15 @@ void kylin_network_set_wifi_down(char *if_name)
 {
     char str[100];
     sprintf(str,"nmcli device disconnect '%s'",if_name);
-    system(str);
-
+    int status = system(str);
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device disconnect' in function 'kylin_network_set_wifi_down' failed");}
 }
 
 //获取wifi列表信息
 wifilist *kylin_network_get_wifilist_info()
 {
-    system("nmcli device wifi > /tmp/wflist.txt");
+    int status = system("nmcli device wifi > /tmp/wflist.txt");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi' in function 'kylin_network_get_wifilist_info' failed");}
     char *filename="/tmp/wflist.txt";
 
     FILE *wffp;
@@ -459,7 +474,7 @@ wifilist *kylin_network_get_wifilist_info()
         fgets(WfStrLine,1024,wffp);
         wfnum++;
     }
-//    printf("wifi数量：%d\n",wfnum);
+    // printf("wifi数量：%d\n",wfnum);
     fclose(wffp);
     //wifi实际数量是wfnum-1
     wifilist *wflist=(wifilist *)malloc(sizeof(wifilist)*wfnum);
@@ -479,7 +494,7 @@ wifilist *kylin_network_get_wifilist_info()
 
         fgets(StrLine,1024,fp);
 
-//        printf("%s\n",StrLine+3);
+        // printf("%s\n",StrLine+3);
         char *index=StrLine+3;
 
         //截取ssid
@@ -490,7 +505,7 @@ wifilist *kylin_network_get_wifilist_info()
             int result=strncmp(index,str1,5);
             if(result==0)
             {
-//                printf("%s\n",index);
+                // printf("%s\n",index);
                 break;
 
             }
@@ -501,15 +516,15 @@ wifilist *kylin_network_get_wifilist_info()
         char *ssidindex=index-1;
         int ssidnum=0;
         for(ssidindex;*ssidindex==' ';ssidindex--)ssidnum++;
-//        printf("空格数量：%d\n",ssidnum);
-//        if(ssidnum==1)
+        // printf("空格数量：%d\n",ssidnum);
+        // if(ssidnum==1)
         strncpy(ssid,StrLine+3,num-1);
         ssid[num-ssidnum]='\0';
-//        printf("-6666--%s---\n",ssid);
+        // printf("-6666--%s---\n",ssid);
 
         wflist[count].ssid=(char *)malloc(sizeof(char)*(num-ssidnum));
         strncpy(wflist[count].ssid,ssid,num-ssidnum+1);
-//        printf("第%d个：%s ",count,wflist[count].ssid);
+        // printf("第%d个：%s ",count,wflist[count].ssid);
 
 
         //截取信号强度
@@ -519,7 +534,7 @@ wifilist *kylin_network_get_wifilist_info()
             int result=strncmp(index,str2,6);
             if(result==0)
             {
-//                printf("%s\n",index);
+                // printf("%s\n",index);
                 break;
             }
         }
@@ -530,10 +545,10 @@ wifilist *kylin_network_get_wifilist_info()
         for(signalindex;*signalindex!=' ';signalindex++)signalnum++;
         strncpy(signal,index+8,signalnum);
         signal[signalnum]='\0';
-//        printf("-7777--%s---\n",signal);
+        // printf("-7777--%s---\n",signal);
 
         wflist[count].signal=atoi(signal);
-//        printf("%d ",wflist[count].signal);
+        // printf("%d ",wflist[count].signal);
 
          //截取安全性
         char *str3="WPA";
@@ -542,7 +557,7 @@ wifilist *kylin_network_get_wifilist_info()
             int result=strncmp(index,str3,3);
             if(result==0)
             {
-//                printf("%s\n",index);
+                // printf("%s\n",index);
                 break;
             }
         }
@@ -558,11 +573,11 @@ wifilist *kylin_network_get_wifilist_info()
         }
         strncpy(safety,index,safetynum+1);
         safety[safetynum+1]='\0';
-//        printf("-8888--%s---\n",safety);
+        // printf("-8888--%s---\n",safety);
 
         wflist[count].safety=(char *)malloc(sizeof(char)*(safetynum+1));
         strncpy(wflist[count].safety,safety,safetynum+2);
-//        printf("%s\n",wflist[count].safety);
+        // printf("%s\n",wflist[count].safety);
 
         count++;
 
@@ -580,29 +595,29 @@ wifilist *kylin_network_get_wifilist_info()
 //启用联网
 void kylin_network_enable_networking()
 {
-    system("nmcli networking on");
-
+    int status = system("nmcli networking on");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli networking on' in function 'kylin_network_enable_networking' failed");}
 }
 
 //禁用联网
 void kylin_network_disable_networking()
 {
-    system("nmcli networking off");
-
+    int status = system("nmcli networking off");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli networking off' in function 'kylin_network_disable_networking' failed");}
 }
 
 //启用wifi
 void kylin_network_enable_wifi()
 {
-    system("nmcli radio wifi on;sleep 3");
-
+    int status = system("nmcli radio wifi on;sleep 3");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli radio wifi on' in function 'kylin_network_enable_wifi' failed");}
 }
 
 //禁用wifi
 void kylin_network_disable_wifi()
 {
-    system("nmcli radio wifi off;sleep 2");
-
+    int status = system("nmcli radio wifi off;sleep 2");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli radio wifi off' in function 'kylin_network_disable_wifi' failed");}
 }
 
 //获取ip地址
@@ -706,7 +721,7 @@ int kylin_network_get_mac(char *if_name,char *macaddr)
     memcpy(&ethaddr,&ifr_mac.ifr_hwaddr.sa_data,sizeof(ethaddr));
     strcpy(macaddr,ether_ntoa(&ethaddr));//#include <netinet/ether.h>
 
-//    strcpy(macaddr,ether_ntoa((struct ether_addr*)ifr_mac.ifr_hwaddr.sa_data));
+    // strcpy(macaddr,ether_ntoa((struct ether_addr*)ifr_mac.ifr_hwaddr.sa_data));
 
     close(sock_mac);
     return 0;
@@ -734,8 +749,8 @@ int kylin_network_get_mtu(char *if_name)
     }
 
     int mtu=ifr_MTU.ifr_mtu;
-//    printf("%d\n",ifr_MTU.ifr_mtu);
-//    printf("%d\n",mtu);
+    // printf("%d\n",ifr_MTU.ifr_mtu);
+    // printf("%d\n",mtu);
 
     close(sock_mtu);
     return mtu;
@@ -964,4 +979,3 @@ long *kylin_network_get_fifo(char *if_name)
     }
     return rtfifo;
 }
-
diff --git a/kylin-network-interface.h b/kylin-network-interface.h
index 35265de5..2a7b9a26 100644
--- a/kylin-network-interface.h
+++ b/kylin-network-interface.h
@@ -19,11 +19,12 @@
 #ifndef __KYLINNETWORKINTERFACE_H__
 #define __KYLINNETWORKINTERFACE_H__
 
-#include<stdio.h>
+#include <stdio.h>
+#include <stdlib.h>
 #include <stdbool.h>
 #include <malloc.h>
-#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 #ifdef __cplusplus
 extern "C"{
diff --git a/kylin-nm.pro b/kylin-nm.pro
index a750d871..20ec4301 100644
--- a/kylin-nm.pro
+++ b/kylin-nm.pro
@@ -15,14 +15,9 @@ LANGUAGE = C++
 CONFIG += c++14
 CONFIG += qt warn_on
 CONFIG += release
-#CONFIG += link_pkgconfig
-#PKGCONFIG += libnm glib-2.0 gio-2.0 dbus-glib-1
-#PKGCONFIG += Qt5Svg
-
 
 CONFIG += link_pkgconfig
 PKGCONFIG += gsettings-qt
-#LIBS    +=  -L/usr/lib/ -lgsettings-qt
 
 target.path = /usr/bin
 target.source += $$TARGET
@@ -43,6 +38,7 @@ DEFINES += QT_DEPRECATED_WARNINGS
 # You can also select to disable deprecated APIs only up to a certain version of Qt.
 #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
 
+QMAKE_CXXFLAGS += -Wno-unused-parameter
 QMAKE_CPPFLAGS *= $(shell dpkg-buildflags --get CPPFLAGS)
 QMAKE_CFLAGS   *= $(shell dpkg-buildflags --get CFLAGS)
 QMAKE_CXXFLAGS *= $(shell dpkg-buildflags --get CXXFLAGS)
diff --git a/mainwindow.cpp b/mainwindow.cpp
index b7952a0e..2ba729fc 100644
--- a/mainwindow.cpp
+++ b/mainwindow.cpp
@@ -144,7 +144,6 @@ bool MainWindow::nativeEvent(const QByteArray &eventType, void *message, long *r
     return false;
 }
 
-
 ///////////////////////////////////////////////////////////////////////////////
 // 初始化控件、网络、定时器
 
@@ -219,10 +218,10 @@ void MainWindow::createOtherUI()
     lbLoadDownImg->resize(16, 16);
 
     lbLoadUp = new QLabel(ui->centralWidget);
-    lbLoadUp->move(X_ITEM + 217, Y_TOP_ITEM + 32);
+    lbLoadUp->move(X_ITEM + 207, Y_TOP_ITEM + 32);
     lbLoadUp->resize(65, 20);
     lbLoadUpImg = new QLabel(ui->centralWidget);
-    lbLoadUpImg->move(X_ITEM + 200, Y_TOP_ITEM + 35);
+    lbLoadUpImg->move(X_ITEM + 190, Y_TOP_ITEM + 35);
     lbLoadUpImg->resize(16, 16);
 
     lbLoadDownImg->setStyleSheet("QLabel{background-image:url(:/res/x/load-down.png);}");
@@ -335,25 +334,29 @@ void MainWindow::getInitLanSlist()
 {
     oldLanSlist.append("TYPE      DEVICE  NAME           ");
     QString strSlist;
+    const int BUF_SIZE = 1024;
+    char buf[BUF_SIZE];
 
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
-    QFile file("/tmp/kylin-nm-connshow");
-    if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
-        syslog(LOG_ERR, "Can't open the file /tmp/kylin-nm-connshow!");
-        qDebug()<<"Can't open the file /tmp/kylin-nm-connshow!";
+    FILE * p_file = NULL;
+
+    p_file = popen("nmcli connection show", "r");
+    if (!p_file) {
+        syslog(LOG_ERR, "Error occured when popen cmd 'nmcli connection show'");
+        qDebug()<<"Error occured when popen cmd 'nmcli connection show";
     }
-    QString txt = file.readAll();
-    QStringList txtLine = txt.split("\n");
-    file.close();
-    foreach (QString line, txtLine) {
+
+    while (fgets(buf, BUF_SIZE, p_file) != NULL) {
+        QString line(buf);
         if(line.indexOf("ethernet") != -1){
             QStringList subLine = line.split(" ");
             if (subLine[1].size() == 1){
                 strSlist =  "ethernet  --      " + subLine[0]+ " " + subLine[1] + "   ";
             }else{strSlist =  "ethernet  --      " + subLine[0] + "   "; }
+            // qDebug()<<strSlist;
             oldLanSlist.append(strSlist);
         }
     }
+    pclose(p_file);
 }
 
 // 初始化网络
@@ -420,15 +423,18 @@ void MainWindow::initNetwork()
             IFace *m_iface = m_bt->execGetIface();
             qDebug()<<"m_lstate ="<<m_iface->lstate<<"    m_wstate ="<<m_iface->wstate ;
 
-            m_bt->lanDelete();
+            m_bt->disConnLanOrWifi("ethernet");
             sleep(1);
-            m_bt->lanDelete();
+            m_bt->disConnLanOrWifi("ethernet");
             sleep(1);
-            m_bt->lanDelete();
+            m_bt->disConnLanOrWifi("ethernet");
             delete m_iface;
             m_bt->deleteLater();
 
-            system("nmcli networking on");
+            char *chr = "nmcli networking on";
+            Utils::m_system(chr);
+//            int status = system("nmcli networking on");
+//            if (status != 0){ syslog(LOG_ERR, "execute 'nmcli networking on' in function 'initNetwork' failed");}
 
             onBtnNetListClicked();
 
@@ -613,38 +619,36 @@ void MainWindow::handleIconClicked()
     QRect availableGeometry = qApp->primaryScreen()->availableGeometry();
     QRect screenGeometry = qApp->primaryScreen()->geometry();
 
+    QDesktopWidget* desktopWidget = QApplication::desktop();
+    QRect deskMainRect = desktopWidget->availableGeometry(0);//获取可用桌面大小
+    QRect screenMainRect = desktopWidget->screenGeometry(0);//获取设备屏幕大小
+    QRect deskDupRect = desktopWidget->availableGeometry(1);//获取可用桌面大小
+    QRect screenDupRect = desktopWidget->screenGeometry(1);//获取设备屏幕大小
+
 //    qDebug()<<"                                                  ";
 //    qDebug()<<"trayIcon:"<<trayIcon->geometry();
 //    qDebug()<<"screenGeometry: "<<screenGeometry;
 //    qDebug()<<"availableGeometry: "<<availableGeometry;
 
+//    qDebug()<<"deskMainRect: "<<deskMainRect;
+//    qDebug()<<"screenMainRect: "<<screenMainRect;
+//    qDebug()<<"deskDupRect: "<<deskDupRect;
+//    qDebug()<<"screenDupRect: "<<screenDupRect;
+
     if (screenGeometry.width() == availableGeometry.width() && screenGeometry.height() == availableGeometry.height()){
-        QDesktopWidget* desktopWidget = QApplication::desktop();
-
-        QRect deskMainRect = desktopWidget->availableGeometry(0);//获取可用桌面大小
-        QRect screenMainRect = desktopWidget->screenGeometry(0);//获取设备屏幕大小
-        QRect deskDupRect = desktopWidget->availableGeometry(1);//获取可用桌面大小
-        QRect screenDupRect = desktopWidget->screenGeometry(1);//获取设备屏幕大小
-
-//        qDebug()<<"                                                  ";
-//        qDebug()<<"deskMainRect: "<<deskMainRect;
-//        qDebug()<<"screenMainRect: "<<screenMainRect;
-//        qDebug()<<"deskDupRect: "<<deskDupRect;
-//        qDebug()<<"screenDupRect: "<<screenDupRect;
-
         int n = objKyDBus->getTaskbarPos("position");
         int m = objKyDBus->getTaskbarHeight("height");
 
         if(n == 0){
             //任务栏在下侧
-            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), availableGeometry.height() - this->height() - m);
+            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenMainRect.y() + availableGeometry.height() - this->height() - m);
         }else if(n == 1){
             //任务栏在上侧
-            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenGeometry.height() - availableGeometry.height() + m);
+            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenMainRect.y() + screenGeometry.height() - availableGeometry.height() + m);
         } else if (n == 2){
             //任务栏在左侧
             if (screenGeometry.x() == 0){
-                this->move(screenGeometry.width() - availableGeometry.width() + m, screenMainRect.height() - this->height());//主屏在左侧
+                this->move(screenGeometry.width() - availableGeometry.width() + m, screenMainRect.y() + screenMainRect.height() - this->height());//主屏在左侧
             }else{
                 this->move(screenGeometry.width() - availableGeometry.width() + m,screenDupRect.y() + screenDupRect.height() - this->height());//主屏在右侧
             }
@@ -653,24 +657,24 @@ void MainWindow::handleIconClicked()
             if (screenGeometry.x() == 0){//主屏在左侧
                 this->move(screenMainRect.width() + screenDupRect.width() - this->width() - m, screenDupRect.y() + screenDupRect.height() - this->height());
             }else{//主屏在右侧
-                this->move(availableGeometry.x() + availableGeometry.width() - this->width() - m, screenMainRect.height() - this->height());
+                this->move(availableGeometry.x() + availableGeometry.width() - this->width() - m, screenMainRect.y() + screenMainRect.height() - this->height());
             }
         }
     } else if(screenGeometry.width() == availableGeometry.width() ){
         if (trayIcon->geometry().y() > availableGeometry.height()/2){
             //任务栏在下侧
-            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), availableGeometry.height() - this->height());
+            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenMainRect.y() + availableGeometry.height() - this->height());
         }else{
             //任务栏在上侧
-            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenGeometry.height() - availableGeometry.height());
+            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenMainRect.y() + screenGeometry.height() - availableGeometry.height());
         }
     } else if (screenGeometry.height() == availableGeometry.height()){
         if (trayIcon->geometry().x() > availableGeometry.width()/2){
             //任务栏在右侧
-            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenGeometry.height() - this->height());
+            this->move(availableGeometry.x() + availableGeometry.width() - this->width(), screenMainRect.y() + screenGeometry.height() - this->height());
         } else {
             //任务栏在左侧
-            this->move(screenGeometry.width() - availableGeometry.width(), screenGeometry.height() - this->height());
+            this->move(screenGeometry.width() - availableGeometry.width(), screenMainRect.y() + screenGeometry.height() - this->height());
         }
     }
 }
@@ -846,11 +850,11 @@ void MainWindow::onCarrierUpHandle()
 {
     wiredCableUpTimer->stop();
     BackThread *up_bt = new BackThread();
-    up_bt->lanDelete();
+    up_bt->disConnLanOrWifi("ethernet");
     sleep(1);
-    up_bt->lanDelete();
+    up_bt->disConnLanOrWifi("ethernet");
     sleep(1);
-    up_bt->lanDelete();
+    up_bt->disConnLanOrWifi("ethernet");
     up_bt->deleteLater();
 
     this->stopLoading();
@@ -870,11 +874,11 @@ void MainWindow::onDeleteLan()
 {
     deleteLanTimer->stop();
     BackThread *btn_bt = new BackThread();
-    btn_bt->lanDelete();
+    btn_bt->disConnLanOrWifi("ethernet");
     sleep(1);
-    btn_bt->lanDelete();
+    btn_bt->disConnLanOrWifi("ethernet");
     sleep(1);
-    btn_bt->lanDelete();
+    btn_bt->disConnLanOrWifi("ethernet");
     btn_bt->deleteLater();
 
     this->stopLoading();
@@ -998,7 +1002,7 @@ void MainWindow::onBtnWifiClicked(int flag)
         // 网络开关关闭时，点击Wifi开关时，程序先打开有线开关
         if (flag == 0) {
             if(checkWlOn()){
-                //objKyDBus->wifiSwitchSlot(false);
+                objKyDBus->setWifiSwitchState(false);
                 lbTopWifiList->hide();
                 btnAddNet->hide();
 
@@ -1015,8 +1019,8 @@ void MainWindow::onBtnWifiClicked(int flag)
                 if (is_fly_mode_on == 0){
                     on_btnWifiList_clicked();
                     is_stop_check_net_state = 1;
-                    //objKyDBus->wifiCardSlot(true);
-                    //objKyDBus->wifiSwitchSlot(true);
+                    objKyDBus->setWifiCardState(true);
+                    objKyDBus->setWifiSwitchState(true);
                     lbTopWifiList->show();
                     btnAddNet->show();
 
@@ -1073,13 +1077,15 @@ void MainWindow::onBtnWifiClicked(int flag)
         btnAddNet->hide();
 
         if (flag == 0) {
-            //objKyDBus->wifiSwitchSlot(false);
-            //objKyDBus->wifiCardSlot(false);
+            objKyDBus->setWifiSwitchState(false);
+            objKyDBus->setWifiCardState(false);
         }
 
         QString txt(tr("please insert the wireless network adapter"));
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "' -t 3800";
-        system(cmd.toUtf8().data());
+        int status = system(cmd.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'onBtnWifiClicked' failed");}
+
         disWifiStateKeep();
     }
 
@@ -1087,15 +1093,6 @@ void MainWindow::onBtnWifiClicked(int flag)
 
 void MainWindow::onBtnNetListClicked(int flag)
 {
-//    if (this->ksnm->isExecutingGetWifiList ){
-//        qDebug()<<"executing update Wifi list now, try again";
-//        on_btnWifiList_pressed(); //当正在更新wifi列表时，点击无效
-//        QString text(tr("update Wi-Fi list now, click again")); //"正在更新 Wi-Fi列表 请再次点击"
-//        QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + text + "...' -t 3800";
-//        system(cmd.toUtf8().data());
-//        return;
-//    }
-
     this->is_btnNetList_clicked = 1;
     this->is_btnWifiList_clicked = 0;
 
@@ -1130,24 +1127,34 @@ void MainWindow::onBtnNetListClicked(int flag)
         this->startLoading();
         this->ksnm->execGetLanList();
     } else {
-        system("nmcli connection show -active>/tmp/kylin-nm-connshow");
-        QFile file("/tmp/kylin-nm-connshow");
-        if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
-            syslog(LOG_DEBUG, "Can't open the file /tmp/kylin-nm-connshow!");
-            qDebug()<<"Can't open the file /tmp/kylin-nm-connshow!";
-        }
-        QString txt = file.readAll();
-        if (txt.indexOf("ethernet") != -1){
-            QString txt(tr("Abnormal connection exist, program will delete it"));//仍然有连接异常的有线网络，断开异常连接的网络
-            QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "...' -t 3800";
-            system(cmd.toUtf8().data());
+        const int BUF_SIZE = 1024;
+        char buf[BUF_SIZE];
 
-            is_stop_check_net_state = 1;
-            this->startLoading();
-            deleteLanTimer->start(1000);
-            return;
+        FILE * p_file = NULL;
+
+        p_file = popen("nmcli connection show -active", "r");
+        if (!p_file) {
+            syslog(LOG_ERR, "Error occured when popen cmd 'nmcli connection show'");
+            qDebug()<<"Error occured when popen cmd 'nmcli connection show";
         }
 
+        while (fgets(buf, BUF_SIZE, p_file) != NULL) {
+            QString line(buf);
+            if(line.indexOf("ethernet") != -1){
+                QString txt(tr("Abnormal connection exist, program will delete it"));//仍然有连接异常的有线网络，断开异常连接的网络
+                QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "...' -t 3800";
+                 int status = system(cmd.toUtf8().data());
+                 if (status != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'onBtnNetListClicked' failed");}
+
+                is_stop_check_net_state = 1;
+                this->startLoading();
+                deleteLanTimer->start(1000);
+                pclose(p_file);
+                return;
+            }
+        }
+        pclose(p_file);
+
         delete topLanListWidget; // 清空top列表
         createTopLanUI(); //创建顶部有线网item
         lbTopLanList->hide();
@@ -1652,7 +1659,10 @@ void MainWindow::updateWifiListDone(QStringList slist)
 
 void MainWindow::on_btnAdvConf_clicked()
 {
-    system("nm-connection-editor &");
+    QProcess *qprocess = new QProcess(this);
+    qprocess->start("nm-connection-editor &");
+//    int status = system("nm-connection-editor &");
+//    if (status != 0){ syslog(LOG_ERR, "execute 'nm-connection-editor &' in function 'on_btnAdvConf_clicked' failed");}
 }
 
 void MainWindow::on_btnAdvConf_pressed()
@@ -1697,28 +1707,8 @@ void MainWindow::on_btnHotspot_clicked()
         } else {
             on_btnHotspotState();
 
-            QString strSlist;
-            system("nmcli connection show -active>/tmp/kylin-nm-connshow");
-            QFile file("/tmp/kylin-nm-connshow");
-            if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
-                syslog(LOG_ERR, "Can't open the file /tmp/kylin-nm-connshow!");
-                qDebug()<<"Can't open the file /tmp/kylin-nm-connshow!";
-            }
-
-            QString txt = file.readAll();
-            QStringList txtLine = txt.split("\n");
-            file.close();
-            foreach (QString line, txtLine) {
-                if(line.indexOf("wifi") != -1){
-                    QStringList subLine = line.split(" ");
-                    if (subLine[1].size() == 1){
-                        strSlist =  subLine[0]+ " " + subLine[1];
-                    }else {
-                        strSlist =  subLine[0];
-                    }
-                    kylin_network_set_con_down(strSlist.toUtf8().data());
-                }
-            } //end foreach
+            BackThread objBT;
+            objBT.disConnLanOrWifi("wifi");
 
             sleep(2);
             on_btnWifiList_clicked();
@@ -2018,7 +2008,7 @@ void MainWindow::activeWifiDisconn()
     btt->moveToThread(tt);
     connect(tt, SIGNAL(finished()), tt, SLOT(deleteLater()));
     connect(tt, SIGNAL(started()), this, SLOT(activeStartLoading()));
-    connect(this, SIGNAL(deleteRedundantNet()), btt, SLOT(redundantNetDeleted()));
+    connect(this, SIGNAL(disConnSparedNet(QString)), btt, SLOT(disConnSparedNetSlot(QString)));
     connect(btt, SIGNAL(disFinish()), this, SLOT(activeGetWifiList()));
     connect(btt, SIGNAL(ttFinish()), tt, SLOT(quit()));
     tt->start();
@@ -2028,7 +2018,7 @@ void MainWindow::activeStartLoading()
     syslog(LOG_DEBUG, "Wi-Fi is disconnected");
     currSelNetName = "";
     //this->startLoading();
-    emit this->deleteRedundantNet();
+    emit this->disConnSparedNet("wifi");
 }
 void MainWindow::activeGetWifiList()
 {
@@ -2231,8 +2221,35 @@ void MainWindow::on_setNetSpeed()
         if (delta_rcv>=10000 || delta_rcv<0){delta_rcv = 0;}
         if (delta_tx>=10000 || delta_tx<0){delta_tx = 0;}
 
-        QString str_rcv = QString::number(delta_rcv/3) + "kb/s";
-        QString str_tx = QString::number(delta_tx/3) + "kb/s";
+        int rcv_num = delta_rcv/3;
+        int tx_num = delta_tx/3;
+
+        QString str_rcv;
+        QString str_tx;
+
+        if (rcv_num < 1000){
+            str_rcv = QString::number(rcv_num) + "KB/s";
+        } else {
+            int remainder;
+            if (rcv_num%1000 < 100) {
+                remainder = 0;
+            }else{
+                remainder = (rcv_num%1000)/100;
+            }
+            str_rcv = QString::number(rcv_num/1000) + "."  + QString::number(remainder) + "MB/s";
+        }
+
+        if (tx_num < 1000){
+            str_tx = QString::number(tx_num) + "KB/s";
+        } else {
+            int remainder;
+            if (tx_num%1000 < 100) {
+                remainder = 0;
+            }else{
+                remainder = (tx_num%1000)/100;
+            }
+            str_tx = QString::number(tx_num/1000) + "."  + QString::number(remainder) + "MB/s";
+        }
 
         lbLoadDown->setText(str_rcv);
         lbLoadUp->setText(str_tx);
@@ -2256,7 +2273,8 @@ void MainWindow::connLanDone(int connFlag)
         this->ksnm->execGetLanList();
         QString txt(tr("Conn Ethernet Success"));
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "' -t 3800";
-        system(cmd.toUtf8().data());
+        int status = system(cmd.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'connLanDone' failed");}
 
         //changeTimerState();
         //checkIfLanConnect->start(8000);
@@ -2267,7 +2285,9 @@ void MainWindow::connLanDone(int connFlag)
         this->is_wired_line_ready = 0; //without net line connect to computer
         QString txt(tr("Conn Ethernet Fail"));
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "' -t 3800";
-        system(cmd.toUtf8().data());
+        int status = system(cmd.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'connLanDone' failed");}
+
     }
 
     if(connFlag == 3){
@@ -2387,7 +2407,8 @@ void MainWindow::connWifiDone(int connFlag)
         this->ksnm->execGetWifiList();
         QString txt(tr("Conn Wifi Success"));
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';notify-send '" + txt + "' -t 3800";
-        system(cmd.toUtf8().data());
+        int status = system(cmd.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'notify-send' in function 'connWifiDone' failed");}
 
         //changeTimerState();
         //checkIfWifiConnect->start(8000);
diff --git a/mainwindow.h b/mainwindow.h
index 2b26fb32..8edacb36 100644
--- a/mainwindow.h
+++ b/mainwindow.h
@@ -19,6 +19,21 @@
 #ifndef MAINWINDOW_H
 #define MAINWINDOW_H
 
+#include "ksimplenm.h"
+#include "loadingdiv.h"
+#include "confform.h"
+#include "kylin-dbus-interface.h"
+#include "kylin-network-interface.h"
+#include "utils.h"
+
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <sys/stat.h>
+#include <sys/syslog.h>
+#include <unistd.h>
+#include <xcb/xcb.h>
+
 #include <QMainWindow>
 #include <QWidget>
 #include <QLabel>
@@ -46,27 +61,13 @@
 #include <QStringList>
 #include <QToolTip>
 
-#include <fcntl.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/syslog.h>
-#include <unistd.h>
-#include <xcb/xcb.h>
-
-#include "ksimplenm.h"
-#include "loadingdiv.h"
-#include "utils.h"
-#include "confform.h"
-#include "kylin-dbus-interface.h"
-#include "kylin-network-interface.h"
-
 #define W_LEFT_AREA 41
 #define W_VERTICAL_LINE 1 //左边竖线宽度
 #define W_RIGHT_AREA 438 //41 + 1 + 438 = 480
 #define L_VERTICAL_LINE_TO_ITEM 4 //竖线到item左侧的距离
 
-#define X_LEFT_WIFI_BALL 412 //白色小球在左边
-#define X_RIGHT_WIFI_BALL 438 //白色小球在右边
+#define X_LEFT_WIFI_BALL 422 //白色小球在左边
+#define X_RIGHT_WIFI_BALL 448 //白色小球在右边
 #define Y_WIFI_BALL 22 //白色小球y坐标
 #define X_ITEM 46 //item到窗口左侧的距离 41 + 1 + 4 = 46
 #define W_ITEM 424
@@ -91,7 +92,7 @@
 
 #define W_BTN_FUN 57
 #define H_BTN_FUN 14
-#define X_BTN_FUN 365
+#define X_BTN_FUN 371
 #define Y_BTN_FUN 87 //新建网络，加入网络按钮的宽高、x坐标、y坐标
 
 #define W_NO_ITEM_TIP 220
@@ -292,7 +293,7 @@ private slots:
     void onBtnAddNetClicked();
     void onBtnCreateNetClicked();
 signals:
-    void deleteRedundantNet();
+    void disConnSparedNet(QString type);
 
     void waitWifiStop();
     void waitLanStop();
diff --git a/mainwindow.ui b/mainwindow.ui
index af92a77d..0a48406b 100644
--- a/mainwindow.ui
+++ b/mainwindow.ui
@@ -43,7 +43,7 @@
    <widget class="QLabel" name="lbBtnWifiBG">
     <property name="geometry">
      <rect>
-      <x>410</x>
+      <x>420</x>
       <y>20</y>
       <width>50</width>
       <height>24</height>
@@ -56,7 +56,7 @@
    <widget class="QPushButton" name="btnWifi">
     <property name="geometry">
      <rect>
-      <x>410</x>
+      <x>420</x>
       <y>20</y>
       <width>50</width>
       <height>24</height>
@@ -147,7 +147,7 @@
    <widget class="QLabel" name="lbBtnWifiBall">
     <property name="geometry">
      <rect>
-      <x>438</x>
+      <x>448</x>
       <y>22</y>
       <width>20</width>
       <height>20</height>
@@ -199,7 +199,7 @@
    <widget class="QLabel" name="lbWifiListBG">
     <property name="geometry">
      <rect>
-      <x>1</x>
+      <x>2</x>
       <y>57</y>
       <width>37</width>
       <height>37</height>
diff --git a/oneconnform.cpp b/oneconnform.cpp
index 344e91a8..dc0f8a27 100644
--- a/oneconnform.cpp
+++ b/oneconnform.cpp
@@ -20,6 +20,7 @@
 #include "ui_oneconnform.h"
 #include "mainwindow.h"
 #include "wireless-security/dlgconnhidwifi.h"
+#include "utils.h"
 
 extern int currentActWifiSignalLv;
 
@@ -603,7 +604,9 @@ void OneConnForm::slotConnWifiResult(int connFlag){
         QString txt(tr("Conn Wifi Failed"));//"连接 Wifi 失败"
         syslog(LOG_DEBUG, "Try to connect wifi named %s, but failed, will delete it's configuration file", ui->lbName->text().toUtf8().data());
         QString cmd = "export LANG='en_US.UTF-8';export LANGUAGE='en_US';nmcli connection delete '" + ui->lbName->text() + "';notify-send '" + txt + "...' -t 3800";
-        system(cmd.toUtf8().data());
+        Utils::m_system(cmd.toUtf8().data());
+//        int status = system(cmd.toUtf8().data());
+//        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection delete' in function 'slotConnWifiResult' failed");}
     }
 
     // 设置全局变量，当前连接Wifi的信号强度
diff --git a/utils.cpp b/utils.cpp
index f2db356a..aacc36ed 100644
--- a/utils.cpp
+++ b/utils.cpp
@@ -17,7 +17,60 @@
  */
 
 #include "utils.h"
-#include <stdio.h>
+
+#include <sys/syslog.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+#include <errno.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// The Utils class
+
+Utils::Utils(){}
+
+int Utils::m_system(char *cmd)
+{
+    int status = 0;
+    pid_t pid;
+
+    if ((pid = vfork()) <0){
+        qDebug()<<"failed to create a subprocess by using vfork";
+        syslog(LOG_ERR, "failed to create a subprocess by using vfork");
+        status = -1;
+    } else if (pid==0) {
+        const char *new_argv[4];
+        struct sigaction sa_cld;
+        sa_cld.sa_handler = SIG_DFL;
+        sa_cld.sa_flags = 0;
+
+        // 在子进程中放开SIGINT信号
+        sigemptyset(&sa_cld.sa_mask);
+        sigaction (SIGINT, &sa_cld, NULL);
+        sigaction (SIGQUIT, &sa_cld, NULL);
+
+        new_argv[0] = "sh";
+        new_argv[1] = "-c";
+        new_argv[2] = cmd;
+        new_argv[3] = NULL;
+
+        // execl("/bin/sh","sh","-c" ,cmd,(char *)0);
+        if (execve("/bin/sh",(char *const *) new_argv, NULL) <0) {
+            qDebug()<<"failed to execve a shell command in function m_system";
+            syslog(LOG_ERR, "failed to execve %s! errno: %d\n",cmd, errno);
+            exit(1);
+        } else {
+            exit(0);
+        }
+    } else {
+        waitpid(pid,&status,0);
+    }
+
+    return status;
+}
+
+
+///////////////////////////////////////////////////////////////////////////////
+// The NetworkSpeed class, used to get network speed
 
 NetworkSpeed::NetworkSpeed(QObject *parent) :QObject(parent){}
 
@@ -76,7 +129,8 @@ int NetworkSpeed::getCurrentDownloadRates(char *netname, long *save_rate, long *
 }
 
 
-
+///////////////////////////////////////////////////////////////////////////////
+// The CustomStyle class, inherit from QProxyStyle, used to change style of control
 
 CustomStyle::CustomStyle(const QString &proxyStyleName, QObject *parent) : QProxyStyle (proxyStyleName)
 {
diff --git a/utils.h b/utils.h
index 8b88c83c..3222904c 100644
--- a/utils.h
+++ b/utils.h
@@ -1,6 +1,11 @@
 #ifndef UTILS_H
 #define UTILS_H
 
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
 #include <QObject>
 #include <QDebug>
 #include <QString>
@@ -15,18 +20,23 @@
 #include <QFile>
 #include <QApplication>
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
+
+///////////////////////////////////////////////////////////////////////////////
+// The Utils class, used to do some assist function
+
+class Utils
+{
+public:
+    Utils();
+
+    static int m_system(char *cmd);
+
+};
 
 
+///////////////////////////////////////////////////////////////////////////////
+// The UseQssFile class, set control style by using .qss file
 
-/*!
- * \brief The UseQssFile class
- * \details
- * 通过QSS文件设置样式
- */
 class UseQssFile
 {
 public:
@@ -42,13 +52,9 @@ public:
 };
 
 
+///////////////////////////////////////////////////////////////////////////////
+// The NetworkSpeed class, get the network upload and download speed
 
-
-/*!
- * \brief The NetworkSpeed class
- * \details
- * 该类通过获取前后时间的流量差，计算单位时间的网络速度
- */
 class NetworkSpeed : public QObject
 {
     Q_OBJECT
@@ -61,22 +67,9 @@ public:
 
 
 
-/*!
- * \brief The CustomStyle class
- * \details
- * 自定义QStyle
- * 基于QProxyStyle，默认使用QProxyStyle的实例绘制控件，你需要针对某一个控件重新实现若干对应的接口。
- * QProxyStyle可以从现有的qt style实例化，我们只需要知道这个style的名字即可。
- * 这种做法带来了不错的扩展性和自由度，因为我们不需要将某个style的代码直接引入我们的项目中，
- * 也能够“继承”这个style类进行二次开发。
- *
- * 下面的方法展现了QStyle的所有的接口，使用QStyle进行控件的绘制使得qt应用能够进行风格的切换，
- * 从而达到不修改项目源码却对应用外观产生巨大影响的效果。
- *
- * \note
- * 需要注意QStyle与QSS并不兼容，因为QSS本身其实上也是QStyle的一种实现，对一个控件而言，本身理论上只能
- * 在同一时间调用唯一一个QStyle进行绘制。
- */
+///////////////////////////////////////////////////////////////////////////////
+// The CustomStyle class, inherit from class QProxyStyle, to change control style customize
+
 class CustomStyle : public QProxyStyle
 {
     Q_OBJECT
diff --git a/wireless-security/dlgconnhidwifi.cpp b/wireless-security/dlgconnhidwifi.cpp
index b4b9ac98..181a0fe0 100644
--- a/wireless-security/dlgconnhidwifi.cpp
+++ b/wireless-security/dlgconnhidwifi.cpp
@@ -74,7 +74,8 @@ DlgConnHidWifi::DlgConnHidWifi(int type, MainWindow *mainWindow, QWidget *parent
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifi' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
@@ -193,7 +194,8 @@ void DlgConnHidWifi::changeWindow(){
         ui->btnConnect->setEnabled(false);
     }else if (ui->cbxConn->currentIndex() >= 1){
         QString currStr = "nmcli connection show " + ui->cbxConn->currentText() + " >/tmp/kylin-nm-connshow";
-        system(currStr.toUtf8().data());
+        int status = system(currStr.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'changeWindow' failed");}
         QFile file("/tmp/kylin-nm-connshow");
         if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
             qDebug()<<"Can't open the file!";
@@ -240,7 +242,8 @@ void DlgConnHidWifi::on_btnConnect_clicked()
         do{
             sleep(1);
            QString cmd = "nmcli device wifi connect " + wifiName + " password '' hidden yes >/tmp/kylin-nm-btoutput";
-           system(cmd.toUtf8().data());
+           int status = system(cmd.toUtf8().data());
+           if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'on_btnConnect_clicked' failed");}
 
            QFile file("/tmp/kylin-nm-btoutput");
            if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
@@ -279,7 +282,8 @@ void DlgConnHidWifi::slotStartLoading()
 void DlgConnHidWifi::on_execSecConn()
 {
     QString str = "nmcli device wifi connect " + strWifiname + " password ''";
-    system(str.toUtf8().data());
+    int status = system(str.toUtf8().data());
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'on_execSecConn' failed");}
     connect(this, SIGNAL(sendMessage()), this,SLOT(emitSignal() ));
     QTimer::singleShot(3*1000, this, SLOT(emitSignal() ));
 }
diff --git a/wireless-security/dlgconnhidwifileap.cpp b/wireless-security/dlgconnhidwifileap.cpp
index 192d4ddf..9e75d903 100644
--- a/wireless-security/dlgconnhidwifileap.cpp
+++ b/wireless-security/dlgconnhidwifileap.cpp
@@ -20,6 +20,8 @@
 #include "ui_dlgconnhidwifileap.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiLeap::DlgConnHidWifiLeap(QWidget *parent) :
     QDialog(parent),
     ui(new Ui::DlgConnHidWifiLeap)
@@ -73,7 +75,8 @@ DlgConnHidWifiLeap::DlgConnHidWifiLeap(QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiLeap' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisecfast.cpp b/wireless-security/dlgconnhidwifisecfast.cpp
index 8769c132..0b8e32c3 100644
--- a/wireless-security/dlgconnhidwifisecfast.cpp
+++ b/wireless-security/dlgconnhidwifisecfast.cpp
@@ -21,6 +21,8 @@
 #include "ui_dlgconnhidwifisecfast.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecFast::DlgConnHidWifiSecFast(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -93,7 +95,8 @@ DlgConnHidWifiSecFast::DlgConnHidWifiSecFast(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecFast' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisecleap.cpp b/wireless-security/dlgconnhidwifisecleap.cpp
index a3870411..2ee2ead5 100644
--- a/wireless-security/dlgconnhidwifisecleap.cpp
+++ b/wireless-security/dlgconnhidwifisecleap.cpp
@@ -21,6 +21,8 @@
 #include "ui_dlgconnhidwifisecleap.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecLeap::DlgConnHidWifiSecLeap(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -79,7 +81,8 @@ DlgConnHidWifiSecLeap::DlgConnHidWifiSecLeap(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecLeap' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisecpeap.cpp b/wireless-security/dlgconnhidwifisecpeap.cpp
index 242c2eb8..6d50f59c 100644
--- a/wireless-security/dlgconnhidwifisecpeap.cpp
+++ b/wireless-security/dlgconnhidwifisecpeap.cpp
@@ -21,6 +21,8 @@
 #include "ui_dlgconnhidwifisecpeap.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecPeap::DlgConnHidWifiSecPeap(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -104,7 +106,8 @@ DlgConnHidWifiSecPeap::DlgConnHidWifiSecPeap(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem("新建...");
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecPeap' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisecpwd.cpp b/wireless-security/dlgconnhidwifisecpwd.cpp
index 52a394c6..086db53b 100644
--- a/wireless-security/dlgconnhidwifisecpwd.cpp
+++ b/wireless-security/dlgconnhidwifisecpwd.cpp
@@ -21,6 +21,8 @@
 #include "ui_dlgconnhidwifisecpwd.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecPwd::DlgConnHidWifiSecPwd(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -80,7 +82,8 @@ DlgConnHidWifiSecPwd::DlgConnHidWifiSecPwd(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecPwd' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisectls.cpp b/wireless-security/dlgconnhidwifisectls.cpp
index c2b04de1..433e7261 100644
--- a/wireless-security/dlgconnhidwifisectls.cpp
+++ b/wireless-security/dlgconnhidwifisectls.cpp
@@ -20,6 +20,8 @@
 #include "ui_dlgconnhidwifisectls.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecTls::DlgConnHidWifiSecTls(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -103,7 +105,8 @@ DlgConnHidWifiSecTls::DlgConnHidWifiSecTls(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecTls' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifisectunneltls.cpp b/wireless-security/dlgconnhidwifisectunneltls.cpp
index 44e52501..e412a5a1 100644
--- a/wireless-security/dlgconnhidwifisectunneltls.cpp
+++ b/wireless-security/dlgconnhidwifisectunneltls.cpp
@@ -21,6 +21,8 @@
 #include "ui_dlgconnhidwifisectunneltls.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiSecTunnelTLS::DlgConnHidWifiSecTunnelTLS(int type, QWidget *parent) :
     WepOrWpa(type),
     QDialog(parent),
@@ -101,7 +103,8 @@ DlgConnHidWifiSecTunnelTLS::DlgConnHidWifiSecTunnelTLS(int type, QWidget *parent
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiSecTunnelTLS' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifiwep.cpp b/wireless-security/dlgconnhidwifiwep.cpp
index 15fcf901..561802c4 100644
--- a/wireless-security/dlgconnhidwifiwep.cpp
+++ b/wireless-security/dlgconnhidwifiwep.cpp
@@ -20,6 +20,8 @@
 #include "ui_dlgconnhidwifiwep.h"
 #include "kylinheadfile.h"
 
+#include <sys/syslog.h>
+
 DlgConnHidWifiWep::DlgConnHidWifiWep(int type, QWidget *parent) :
     WepPwdOrCode(type),
     QDialog(parent),
@@ -79,7 +81,8 @@ DlgConnHidWifiWep::DlgConnHidWifiWep(int type, QWidget *parent) :
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiWep' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
diff --git a/wireless-security/dlgconnhidwifiwpa.cpp b/wireless-security/dlgconnhidwifiwpa.cpp
index fb77849f..51ec0663 100644
--- a/wireless-security/dlgconnhidwifiwpa.cpp
+++ b/wireless-security/dlgconnhidwifiwpa.cpp
@@ -80,7 +80,8 @@ DlgConnHidWifiWpa::DlgConnHidWifiWpa(int type, MainWindow *mainWindow, QWidget *
     ui->btnConnect->setText(tr("Connect")); //连接
 
     ui->cbxConn->addItem(tr("C_reate…")); //新建...
-    system("nmcli connection show>/tmp/kylin-nm-connshow");
+    int status = system("nmcli connection show>/tmp/kylin-nm-connshow");
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'DlgConnHidWifiWpa' failed");}
     QFile file("/tmp/kylin-nm-connshow");
     if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
         qDebug()<<"Can't open the file!";
@@ -200,7 +201,8 @@ void DlgConnHidWifiWpa::changeWindow(){
         connect(connHidWifi, SIGNAL(reSetWifiList() ), mw, SLOT(on_btnWifiList_clicked()) );
     }else if (ui->cbxConn->currentIndex() >= 1){
         QString currStr = "nmcli connection show " + ui->cbxConn->currentText() + " >/tmp/kylin-nm-connshow";
-        system(currStr.toUtf8().data());
+        int status = system(currStr.toUtf8().data());
+        if (status != 0){ syslog(LOG_ERR, "execute 'nmcli connection show' in function 'changeWindow' failed");}
         QFile file("/tmp/kylin-nm-connshow");
         if(!file.open(QIODevice::ReadOnly | QIODevice::Text)){
             qDebug()<<"Can't open the file!";
@@ -251,7 +253,8 @@ void DlgConnHidWifiWpa::on_btnConnect_clicked()
         do{
             sleep(1);
             QString cmd = "nmcli device wifi connect " + wifiName + " password " + wifiPassword + " hidden yes >/tmp/kylin-nm-btoutput";
-            system(cmd.toUtf8().data());
+            int status = system(cmd.toUtf8().data());
+            if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'on_btnConnect_clicked' failed");}
 
             QFile file("/tmp/kylin-nm-btoutput");
             if(!file.open(QIODevice::ReadOnly | QIODevice::Text))
@@ -308,7 +311,8 @@ void DlgConnHidWifiWpa::slotStartLoading()
 void DlgConnHidWifiWpa::on_execSecConn()
 {
     QString str = "nmcli device wifi connect " + strWifiname + " password " + strWifiPassword;
-    system(str.toUtf8().data());
+    int status = system(str.toUtf8().data());
+    if (status != 0){ syslog(LOG_ERR, "execute 'nmcli device wifi connect' in function 'on_execSecConn' failed");}
     connect(this, SIGNAL(sendMessage()), this,SLOT(emitSignal() ));
     QTimer::singleShot(3*1000, this, SLOT(emitSignal() ));
 }