+}
+
+extern "C" {
+static void
+gtk_popup_hide_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
+{
+ // when the popup is hidden, throw a SELECTED event only if the combobox
+ // selection changed.
+ int curSelection = combo->GetSelection();
+ if (g_SelectionBeforePopup != curSelection)
+ {
+ wxCommandEvent event( wxEVT_COMMAND_COMBOBOX_SELECTED, combo->GetId() );
+ event.SetInt( curSelection );
+ event.SetString( combo->GetStringSelection() );
+ event.SetEventObject( combo );
+ combo->GetEventHandler()->ProcessEvent( event );
+ }
+
+ // reset the selection flag to an identifiable value (-2 = hidden)
+ g_SelectionBeforePopup = -2;
+}
+}
+
+extern "C" {
+static void
+gtk_popup_show_callback(GtkCombo *WXUNUSED(gtk_combo), wxComboBox *combo)
+{
+ // store the combobox selection value before the popup is shown
+ // if there is no selection, combo->GetSelection() returns -1
+ g_SelectionBeforePopup = combo->GetSelection();
+}
+}