"Veronika Irvine" <[EMAIL PROTECTED]> writes: > To allow a widget to participate as a drag source I have two options 1) >gtk_drag_source_set and 2) gtk_drag_begin. > > What I want to be able to do is when the conditions are right for a drag > to begin, I want to check if I indeed want to perform a drag (e.g. do I > have anything selected to drag). > If I have nothing to drag, I do not want to proceed. > > As far as I can gather, if I use gtk_drag_source_set I will be notified > in my drag_begin callback that the conditions for a drag to start have > been met. But I can see no way in the drag_begin callback to abort the > operation (in fact calling gdk_drag_abort does not work and there is no > return value to indicate failure). > > Alternatively, I can detect that a DND operation may begin and then call > gtk_drag_begin but since the user can possibly configure the timing, > button used, distance moved etc I really can't do a good job of figuring > out when the DND operation may begin.
I believe if you use drag_source_set you can't customize when the drag begins. You need to begin the drag yourself in that case. gtktreeview.c contains an example. There's a gtk_drag_check_threshold() function you should use to be sure you're using a consistent drag threshold. Havoc _______________________________________________ gtk-list mailing list [EMAIL PROTECTED] http://mail.gnome.org/mailman/listinfo/gtk-list
