Hi,
with gtk 3.4.4 I get a crash with code like:
gboolean button_callback (GtkWidget *widget, GdkEventButton *event,
gpointer user_data) {
gint x,y;
GdkWindow *xwin=gtk_widget_get_window(widget);
GdkDevice *device=gdk_event_get_source_device((GdkEvent *)event);
gdk_window_get_device_position (xwin,device,&x,&y,NULL); // crash !!
}
There is not even a stack trace, it just instantly quits the app.
However, if I replace:
GdkDevice *device=gdk_event_get_source_device((GdkEvent *)event);
with:
GdkDeviceManager *device_manager =
gdk_display_get_device_manager(gdk_window_get_display(xwin));
GdkDevice *device = gdk_device_manager_get_client_pointer (device_manager);
then there is no crash. Is this a bug ?
In the documentation for gdk_device_manager_get_client_pointer(), it says:
"You should use this function sheldomly (sic), only in code that isn't
triggered by a GdkEvent..."
http://developer.gnome.org/gdk3/stable/GdkDeviceManager.html#gdk-device-manager-get-client-pointer
If it is not a bug then the documentation is somewhat misleading.
Regards,
Salsaman.
http://lives.sourceforge.net
https://www.ohloh.net/accounts/salsaman
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