Re: Custom Gtk3 Widget - scroll_event

[Joël Krähemann <joel weedlight ch>]

Am Dienstag, den 01.04.2014, 17:09 +0002 schrieb Bernhard Schuster:
> hey!
>
> I am trying to derive a custom widget from GtkWidget. (Yet another 
> approach to plot data, I got some special fancy requirements).
> So I thought I could just overwrite the scroll_event 
> handler/function-pointer and get hold of all scroll events on that 
> widget. But it does not work as expected, the functions gets _never_ 
> called at all.
>
> I also tried to use `gtk_widget_{set_sensitive,set_focus,add_events}` 
> but none fixed the issue nor did connecting to the "scroll-event" 
> signal yield any callback executions.
>
> For full demmo source code (yes, a minimal compileable example) is 
> included in the following Stackoverflow question:
> http://stackoverflow.com/questions/22738105/event-callback-does-not-get-executed-in-custom-gtk3-widget
>
> Thanks a lot advance!
>
> Best
>
> Bernhard
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Do you use a GtkScrolledWindow to pack the entire widget?
As I know this is the only way to get scrolled-event out of gtk because
it has a viewport.