Q_OBJECT宏是Qt框架中的一个核心宏,它必须在所有继承自QObject或其子类的类声明中使用。这个宏为类启用了Qt的元对象系统(MetaObject System),该系统提供了信号与槽(signals and slots)机制、对象名称(object names)、属性系统(properties)以及动态对象创建等功能。简而言之,Q_OBJECT宏使得类能够利用Qt提供的许多高级...
简介: error : Class declarations lacks Q_OBJECT macro 直译是:类声明没有Q_OBJECT 宏。 class CError1 : public QObject { signals: void OnButClicked(); }; class CError2 : public QObject { signals: void OnButClicked(); }; class CError1 : public QObject { Q_OBJECT signals: void On...
直译是:类声明没有Q_OBJECT 宏。 class CError1 : public QObject { signals: void OnButClicked(); }; class CError2 : public QObject { signals: void OnButClicked(); }; class CError1 : public QObject { Q_OBJECT signals: void OnButClicked(); }; 类声明加上Q_OBJECT就好了。 class CE...
The class declaration does not have a Q_object macro. Class Cerror1:public Qobject { Signals: void onbutclicked (); }; Class Cerror2:public Qobject { Signals: void onbutclicked (); }; Class Cerror1:public Qobject { Q_object Signals: void onbutclicked (); }; The class ...
Class `NullLineEdit` lacks Q_OBJECT macro C:\git_repos\sqlitebrowser\src\AddRecordDialog.cpp 39 Which looks like this line: sqlitebrowser/src/AddRecordDialog.cpp Line 39 in 37361d8 QAction* nullAction = new QAction(QIcon(":/icons/set_to_null"), tr("Set to NULL"), editContextMen...
解决: error: Class declaration lacks Q_OBJECT macro. 的报错 技术标签: bug qt1. 问题的引出 最近在练习信号和槽的知识,在学习的过程中,报了如下截图所示的错误: 根据报错可知:未添加 Q_OBJECT宏. 2. 问题的解决 只有加入了Q_OBJECT,你才能使用QT中的signal和slot机制。为了使用信号和槽,就必须继承Q_...
The macro with the 'setjmp' name and the function with the 'longjmp' name should not be used. V2513. MISRA. Unbounded functions performing string operations should not be used. V2514. MISRA. Unions should not be used. V2515. MISRA. Declaration should contain no more than two levels of ...
Consider using the declaration from system header files instead. V678. Object is used as an argument to its own method. Consider checking the first actual argument of the 'Foo' function. V679. The 'X' variable was not initialized. This variable is passed by reference to the 'Foo' ...
Consider using the declaration from system header files instead. V678. Object is used as an argument to its own method. Consider checking the first actual argument of the 'Foo' function. V679. The 'X' variable was not initialized. This variable is passed by reference to the 'Foo' ...
V677. Custom declaration of standard type. Consider using the declaration from system header files instead. V678. Object is used as an argument to its own method. Consider checking the first actual argument of the 'Foo' function. V679. The 'X' variable was not initialized. This variable is...