QTimer::singleShot 没有调用我的超时槽

Question

I call singleshot in a button press callback, but my timeout slot never gets called, in the debugger my code gets to where i call the singleshot function, but it never gets to the breakpoint in my timeout function.

In the.h:

private slots:

void on_snoozeTimeout(Data d);

In the.cpp:

void MyClass::on_snoozeBtn_clicked()
{                   
   QTimer::singleShot(snoozeTimeoutValue*1000,this,SLOT(on_snoozeTimeout(selectedData)));
}
void MyClass::on_snoozeTimeout(Data d)
{
//not hitting this breakpoint
}

Answer 1

The SLOT macro can't accept function parameters the way you are trying to use it. Use a lambda instead:

QTimer::singleShot(snoozeTimeoutValue*1000, [this, selectedData](){
    on_snoozeTimeout(selectedData);
});

Answer 2

Using qt4.8, refactored code to not use parameter