qt - Check which signal is the calller of the signal

Question

Is there any way to know whether inst1 or inst2 was the trigger for the slot in the next code?

MyClass inst1 ,inst2;

connect (inst1, sigInst1(), this, mySlot());
connect (inst2, sigInst2(), this, mySlot());


void mySlot(){
   // here I want to know if inst1 or inst2 got me into this slot.

}

Answer 1

只需调用sender()即可获得发出信号的对象的指针。

QObject * QObject::sender() const [protected]文档中的条目在这里。