56 lines
1.5 KiB
C
56 lines
1.5 KiB
C
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/**
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* brief 工具类——反射，主要用作根据类名动态创建类
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* author 赵民勇
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* note :
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* 1、类需要继承自QObject或其派生数的上层节点包含QObject
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* 2、暂时只提供无参构造函数注册
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* 3、需要动态创建的类头文件中引入本头文件，并且在类定义中使用宏DECLARE_DYNAMIC_CLASS(yourClassName); 在类定义文件（.cpp）中使用IMPL_DYNAMIC_CLASS(yourClassName)
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* 4、例：
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* 类定义的头文件.h中：
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* #include <QObject>
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* #include "../common/reflect.h"
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* class MyClass : public QObject
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* {
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* Q_OBJECT
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* DECLARE_DYNCREATE(MyClass)
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* }
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*
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* .cpp文件中，代码开始前写上：
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* IMPLEMENT_DYNCREATE(MyClass)
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*/
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#ifndef REFLECT_H
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#define REFLECT_H
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#include <QObject>
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#include <QHash>
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#include <QString>
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typedef QObject * (*Constructor)();
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class Reflect
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{
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public:
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static int registerClass(const QString& className, Constructor constructor);
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static QObject * createObject(const QString& className);
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private:
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static QHash<QString, Constructor>& constructors();
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};
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#define DECLARE_DYNCREATE(class_name) \
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public: \
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static QObject * create##class_name##Object();
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#define IMPLEMENT_DYNCREATE(class_name) \
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QObject * class_name::create##class_name##Object() \
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{ \
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return (QObject *)(new class_name()); \
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} \
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static int g_icreate##class_name##Object = Reflect::registerClass(#class_name, class_name::create##class_name##Object);
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#endif //!REFLECT_H
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