Re: GDK bug

[Havoc Pennington <hp redhat com>]

Wolfgang Sourdeau <wolfgang contre com> writes:
> > > > > > "Carlos" == Carlos Pereira <carlos pehoe civil ist utl pt> writes:
>
> > > Calling gdk_window_move_resize() in show isn't guaranteed to work at
> > > all. GTK can change it, the window manager can change it. You are
> > > going behind everyone's back, subverting the system, sometimes the
> > > system will notice and decide to put you in line. ;-)
>
> I thought the show signal was emitted after the widget became visible.

No, it is just emitted when you call gtk_widget_show(). The widget is
visible when you get your first expose_event.
 
> > > Is this a toplevel window? If so, use gtk_window_set_default_size()
> > > (to simulate a user-resized size) or gtk_widget_set_usize() (to force
> > > a minimum size).
>
> The problem is that GTK+ has no direct equivalent to get those values
> back. I could check the allocation for the dimensions, but what about
> the position ?

This is a complicated issue. There is some code I did for GTK 2 that
gives you gtk_window_get_location().

gdk_window_get_origin() will NOT give you the right position to set
back with gtk_window_move_resize() or gtk_widget_set_uposition().

The reason is that the position you set is the top-left corner of the
window manager frame. The position you get is the top-left corner of
your window, inside the window manager frame.

X does not actually support getting the position of the top-left
corner of the WM frame which is what you want, if you want to set the
position back. But we have some bad hacks for GTK 2 to try and guess
at this position.

To get the size, widget->allocation.width, widget->allocation.height
should work just fine, once the window is onscreen.

Havoc