fixed mouse (and other?) events generation broken by recent changes (patch 1446205)

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@37926 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/gtk/listbox.cpp

@@ -1061,8 +1061,9 @@ void wxListBox::ApplyToolTip( GtkTooltips *tips, const wxChar *tip )
 
 GtkWidget *wxListBox::GetConnectWidget()
 {
-    // return GTK_WIDGET(m_treeview);
-    return m_widget;
+    // the correct widget for listbox events (such as mouse clicks for example)
+    // is m_treeview, not the parent scrolled window
+    return GTK_WIDGET(m_treeview);
 }
 
 bool wxListBox::IsOwnGtkWindow( GdkWindow *window )