Re: Moveable Goocanvas::Widgets

[Robert Gründler <doobre gmail com>]

thanks, gtk_widget_set_events() did the trick.


best


-robert


Damon Chaplin wrote:
> On Sun, 2009-02-22 at 13:51 +0100, Robert Gründler wrote:
>
>   
> > This resulted in the next workaround, listening to the motion notify 
> > event on the canvas itself, handling the dragging logic in there, which 
> > brought me to a point where i'm really stuck now. The 
> > motion_notify_event from the Goocanvas::Canvas itself is dispatched 
> > correctly, even if the mouse is over a child Widget. However, i'm not 
> > receiving the signal anymore as soon as the left mouse button is clicked 
> > on a widget on the canvas...
> >
> > _canvas->signal_motion_notify_event().connect(sigc::mem_fun(*this, 
> > &MyWindow::on_canvas_motion_notify_event, false);
> >
> > bool MyWindow::on_canvas_motion_notify_event(GdkEventMotion* event) { // 
> > <-- not called when the mouse button has been pressed on a widget on the 
> > canvas
> >   std::cout << "motion detected" << std::endl; 
> > }
> >     
>
> It might be better to connect to the "event" signal of the embedded
> widgets. That way you should get all the events aimed at the widget
> before anything gets a chance to interfere.
>
> Also, make sure you call gtk_widget_set_events() on the embedded widget
> with all the types of events you need.
>
> Damon
>
>
>