Hi, On Mon, Jun 26, 2017 at 10:08:36AM +0000, Rúben Rodrigues wrote: > Following this post that didn't receive an answer > https://mail.gnome.org/archives/gtk-app-devel-list/2016-June/msg00030.html > , want to ask if someone knows this problem. I know this problem, since I wrote this mail. But maybe I'm the only one, and noone else cares. :(
> Sometimes combobox works, > but i think that is dificult to change the state of the combobox. There > is a workaround? I know two workarounds: 1. Patch the library with my patch, see https://bugzilla.gnome.org/show_bug.cgi?id=333470 2. Stack a transparent button on top of the combobox. I'm using the 2nd way, by using the following function in Python for every combobox. It's not perfect (and only a workaround and not a real solution), but as long as the GTK+-developers don't care, that's all I can do. -- def workaround_combobox_touch(widget): """Workaround for comboboxes for touchscreens. Comboboxes (and menus) do not work with touchscreens, due to a bug in GTK+3, bugnumber #33470. There are usually 2 ways to select a combobox-entry: 1. press + move + release This works with touchscreens in GTK+2 and partly in GTK+3 3.4, but not in e.g. GTK+3 3.20: Press + move does not move the selection, but tries to scroll the combobox-popup. 2. click -> popup, click -> select/popdown This does not work on touchscreens, since (a) some touchscreens send MotionNotify-events with 0 pixels movement after the press and (b) GTK+ closes the combobox-popup if a MotionNotify-event occurred during the click. So, this workaround stacks a transparent button above the combobox, and opens the combobox-popup on button-click. """ container = widget.get_parent() left = container.child_get_property(widget, "left-attach") top = container.child_get_property(widget, "top-attach") button = Gtk.Button() button.set_label("") button.set_opacity(0) button.connect("clicked", lambda w, _=None: widget.popup()) container.remove(widget) container.attach(button, left, top, 1, 1) container.attach(widget, left, top, 1, 1) -- Roland _______________________________________________ gtk-app-devel-list mailing list gtk-app-devel-list@gnome.org https://mail.gnome.org/mailman/listinfo/gtk-app-devel-list