[Solved] Cannot get any focus signal

[Zylann]

Hello,
we are trying to debug a focus problem in our application, and it seems QApplication::focusWidgetChanged is never emitted.
I created a simple object just to listen the signals like this:

			connect(
				app, SIGNAL(focusWidgetChanged(QWidget * old, QWidget * now)), 
				this, SLOT(onFocusWidgetChanged(QWidget * old, QWidget * now))
			);
			connect(
				app, SIGNAL(focusWindowChanged(QWidget * now)), 
				this, SLOT(onFocusWindowChanged(QWidget * now))
			);

We have forms, multiple docks and windows in our application, but none of these focus signals are called Oo
How can I know when something is focused? Or does it really means there is no focusing at all in the application?

[tarod.net]

@Zylann I think the signal should be void QApplication::focusChanged(QWidget * old, QWidget * now), not focusWidgetChanged.

Could you please try with that signal?

[Zylann]

I tried too, it didn't works either.

[tarod.net]

@Zylann Which platform are you using? Linux, Windows, OS?

[Zylann]

I use Windows 7 64 bits, with Visual Studio 2013 as IDE.

EDIT: I just noticed these warnings:
[Warning] QObject::connect: No such signal QApplication::focusChanged(QWidget * old, QWidget * now)
[Warning] QObject::connect: No such signal QApplication::focusWindowChanged(QWidget * now)
But these signals exist?

[tarod.net]

@Zylann In the next example:

<your_qt_dir>\Examples\Qt-5.5\help\contextsensitivehelp

You can see how the signal is working.

[tarod.net]

@Zylann OMG :) I see where the problem is.

You don't need to name your input variables in the signal/slot methods.

    connect(app, SIGNAL(focusChanged(QWidget *, QWidget *)), 
            this, SLOT(focusChanged(QWidget *, QWidget *))
            ); 

[Zylann]

Ooooh yes, it fixed the problem :'D
Thank you !

[tarod.net]

@Zylann Great! :)

Please, mark the post as solved ;)