锁屏时调用kwin的blockGlobalShortcuts来屏蔽快捷键

data/ukui-screensaver.desktop

@@ -17,3 +17,4 @@ X-UKUI-Bugzilla-Product=ukui-screensaver
 X-UKUI-Bugzilla-Component=general
 X-UKUI-Bugzilla-Version=1.0.0
 OnlyShowIn=UKUI
+X-UKUI-AutoRestart=true

src/interface.cpp

@@ -86,6 +86,12 @@ void Interface::SetLockState()
 
 void Interface::emitLockState(bool val)
 {
+    qDebug()<<"emitLockState state = "<<val;
+    QDBusInterface interface("org.kde.KWin",
+                             "/kglobalaccel",
+                             "org.kde.KGlobalAccel",
+                             QDBusConnection::sessionBus());
+    interface.call("blockGlobalShortcuts",val);
     QDBusMessage message;
     if(val){
     	message = QDBusMessage::createSignal(SS_DBUS_PATH,