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-rw-r--r--libs/gtkmm2ext/gtk_ui.cc21
1 files changed, 21 insertions, 0 deletions
diff --git a/libs/gtkmm2ext/gtk_ui.cc b/libs/gtkmm2ext/gtk_ui.cc
index 660ea32ad1..f00c6cd1e1 100644
--- a/libs/gtkmm2ext/gtk_ui.cc
+++ b/libs/gtkmm2ext/gtk_ui.cc
@@ -560,10 +560,31 @@ UI::popup_error (const char *text)
pup->touch ();
}
+#ifdef GTKOSX
+extern "C" {
+ int gdk_quartz_in_carbon_menu_event_handler ();
+}
+#endif
void
UI::flush_pending ()
{
+#ifdef GTKOSX
+ /* as of february 11th 2008, gtk/osx has a problem in that mac menu events
+ are handled using Carbon with an "internal" event handling system that
+ doesn't pass things back to the glib/gtk main loop. this makes
+ gtk_main_iteration() block if we call it while in a menu event handler
+ because glib gets confused and thinks there are two threads running
+ g_main_poll_func().
+
+ this hack (relies on code in gtk2_ardour/sync-menu.c) works
+ around that.
+ */
+
+ if (gdk_quartz_in_carbon_menu_event_handler()) {
+ return;
+ }
+#endif
if (!caller_is_ui_thread()) {
error << "non-UI threads cannot call UI::flush_pending()"
<< endmsg;