Close button, we probably want the window's close function to loto foot samedi 5 aout 2017 be called.
All classes that contain signals or slots must mention.
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Only the class that defines a signal and its subclasses can emit the signal.Q_static_assert_X ( int (SignalType:ArgumentCount) int (SlotType:ArgumentCount "The slot requires more arguments than the signal provides.Call(T function, QObject *receiver, void *args A static function that will call the function, applying the given parameters.(Yes, a pointer to the pointer) Signal Index We need to make a relationship between the signal pointer and the signal index.The Q_object macro is expanded by the preprocessor to declare several member functions that are implemented by the moc; if you get compiler errors along the lines of "undefined reference to vtable for LcdNumber you have probably forgotten to run the moc or to include.All classes that inherit from, qObject or one of its subclasses (e.g., QWidget ) can contain signals and slots.Connecting different input widgets together would be impossible.You should take care that any objects used inside the functor are still alive when the signal is emitted.Arguments: Represents the list of argument.H : template typename Func1, typename Func2 static inline QMetaObject : Connection ( const typename QtPrivate: FunctionPointer Func1 :Object *sender, Func1 signal, const typename QtPrivate: FunctionPointer Func2 :Object *receiver, Func2 slot, Qt: ConnectionType type Qt: AutoConnection ) typedef QtPrivate: FunctionPointer Func1 SignalType; typedef QtPrivate: FunctionPointer.I was tinkering with the this pointer but don't know much about.The meta-object contains the names of all the signal and slot members, as well as pointers to these functions.Signals and slots are used for communication between objects.Data) value; template typename T void operator T, const ApplyReturnValue void ) ApplyReturnValue is just a wrapper around a void.They should generate sensible compilation error messages when the user made a mistake.
The meta-object contains additional information such as the object's class name.