Multiple connections to one method

[davisjamesf]

I have ten buttons connected to one method:

connect(m_myPushButton1, SIGNAL(clicked()), this, SLOT(MyMethod()));
connect(m_myPushButton2, SIGNAL(clicked()), this, SLOT(MyMethod()));
...
connect(m_myPushButton10, SIGNAL(clicked()), this, SLOT(MyMethod()));


Is there a way I can find out what button did the click in this method?

void TestClass::MyMethod()
{
//if button1 made the click, place a 1 in the spinner box
//if button2 make the click, place a 2 in the spinner box
// etc.
m_SpinnerBox->setValue(...find the button that made the click...);
}

[marcel]

You can use QObject::sender() in the slot and do a dynamic cast to QPushButton and compare the result with your ten buttons.

But it would really be nicer if you had ten slots, one for each button.

[jpn]

QButtonGroup is there for exactly this purpose.

[davisjamesf]

Thanks. In reality, I have MANY more slots than my example has. All it The method has to do is take input data from a list , evaluate the data, and add it to a spinner box that corresponds the button I pressed. So for each button, there is an associated spinner box. I guess I would not only have to figure out the button I pressed, but I would have to map a spinner box with the button (perhaps a layout?)

...Just read jpn's reply after submitting this...I'll give his idea a try. Thanks

[wysota]

QSignalMapper can also be used, especially if you want to map spin boxes. You can then have a slot that takes a spin box pointer as its argument (just make sure it's cast to QWidget*).