I'm taking a guess that we need to pass 'this' at line 243 of 'gtkmm2ext/fader.cc'

(makes it consistent with similar changes elsewhere).

diff --git a/libs/gtkmm2ext/fader.cc b/libs/gtkmm2ext/fader.cc
index 9a2f5a2cd95899a6f60a2b5e2ea764c75aac2f46..f6fe487ed1e17e613c4b3ffe7a526861bf284fa0 100644 (file)
--- a/libs/gtkmm2ext/fader.cc
+++ b/libs/gtkmm2ext/fader.cc
@@ -240,7 +240,7 @@ Fader::on_size_allocate (Gtk::Allocation& alloc)
 bool
 Fader::on_button_press_event (GdkEventButton* ev)
 {
-       focus_handler();
+       focus_handler(this);
 
        if (_read_only) {
                return false;