QT 4.3.3: QSystemTrayIcon, winEvent, how to add an on ON HOVER handler...

[JohnSuykerbuyk]

Hi,

I've been working with the QSystemTrayIcon component, this part of our
application is targeted towards windows exclusively, so I don't mind if
I do something that is not portable.

QSystemTrayIcon emits a number of button activated reason codes via its
"activated" signal, but I am trying to capture the event that signals
that the mouse is hovering over the tray icon, specifically in windows,
the WM_NCMOUSEHOVER event.

I've gone through the source of QSystemTrayIcon to see how its private
parts work, but I can't quite seem to figure out an appropriate (or the
best) way to capture WM_MESSAGE traffic in my tray applet, and if I
don't see the one message I am after, delegate it back down to the
QSystemTrayIcon object I am a decedent of. It seems that all pretext of
the QWidget is deeply nested inside of private classes that I can
dispatch to from my derived object.

Is there something I am missing? I can modify the
QSystemTrayIconSys::winEvent in qsystemtrayicon_win.cpp to do what I
want it to, but I don't want to be off in a private branch for my QT
source... I've tried all the ticks I can think of in my derived
QSystemTrayIcon class, but alas, it does not directly inherit from
QWidget and doing so, I still can't dispatch down my inheritance chain
to handle those things that I don't need to.

Thanks

John Suykerbuyk

[luf]

You can do an winEvent, but have a look at QWidget::enterEvent, as this tells you when the mouse enters the widget, you can do something similar with ordinary event and QEvent::MouseMove.

This makes the tricky part, as you can do a custom class with a subclass of QWidget and QSystemTrayIcon. (which I don't know if would work...)

But the easier solution is probably to reimplement ::event(QEvent*e)
Somthing linke this:

bool SystTrayIcon::event( QEvent e )
{
    switch ( e->type() ) {
    case QEvent::MouseMove:
	/* 
                     Do Mouse Move stuff Here 
                     Should happen when the mouse is over your systray icon
                */
	break;
 
    case QEvent::MouseButtonPress:
	/* Button Press things here */
	break;
   case QEvent::MouseButtonRelease:
	/ * Do mouse release button stuff */
	break;
    case QEvent::MouseButtonDblClick:
	/ * Do mouse double click stuff */
	break;
    default:
	return QObject::event( e );
}

bool SystTrayIcon::event( QEvent e )
{
    switch ( e->type() ) {
    case QEvent::MouseMove:
	/* 
                     Do Mouse Move stuff Here 
                     Should happen when the mouse is over your systray icon
                */
	break;

    case QEvent::MouseButtonPress:
	/* Button Press things here */
	break;
   case QEvent::MouseButtonRelease:
	/ * Do mouse release button stuff */
	break;
    case QEvent::MouseButtonDblClick:
	/ * Do mouse double click stuff */
	break;
    default:
	return QObject::event( e );
}

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Have a look at how the systray implements the clicks if you want same functionality as it has for those options.