On Sun, 2006-01-08 at 18:00 -0500, Travis Miller wrote:
> This is probably a dumb question (but here goes anyway). I have been
> playing with gtk+ for awhile now, but recently I wanted to try
> something more graphical. Basicly I want to be able to read in some
> data and display it graphically. I wanted to add handlers that would
> allow me to drag the view port around (using the mouse).
>
> So basicly I used Glade to create the UI. So I have a gnome window
> (with menu bar and button tool bar and all). ANd there are lots of
> containers (VBox's and HBox's) and doen this chain is a
> GtkDrawingArea. I used Glade to add handlers for various events (like
> motion_notift_event, and enter_notify_event etc.). None of these
> handlers ever seem to get called however. What is causing this? Do I
> have to do something more? Are the containers preventing the event
> from trickling down to the GtkDrawingArea?
You need to ask for these events to be enabled, have a look at
gtk_widget_set_events () or gtk_widget_add_events().
There should be an example of this in the gtk-demo (the Drawing Area
test). Below is a snippet from that code:
/* Ask to receive events the drawing area doesn't normally
* subscribe to
*/
gtk_widget_set_events (da, gtk_widget_get_events (da)
| GDK_LEAVE_NOTIFY_MASK
| GDK_BUTTON_PRESS_MASK
| GDK_POINTER_MOTION_MASK
| GDK_POINTER_MOTION_HINT_MASK);
--
Regards,
Martyn
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