Strange focus for POPUP-type windows

[Simon Gornall <simon unique-id com>]

I'm having difficulty getting a popup window (one without the
window-manager
bits) to reliably accept key-presses. The below code works fine for
windows
of type GTK_WINDOW_TOPLEVEL instead of GTK_WINDOW_POPUP.

Here's a small snippet of code that demonstrates what I'm doing (wrong
:-) ...

   
//========================================================================
    // Create the window to draw in
   
//========================================================================
    if ((_window = gtk_widget_new (gtk_window_get_type(),
			      "GtkObject::user_data", NULL,
			      "GtkWindow::type", GTK_WINDOW_POPUP,
			      "GtkWindow::title", "Video Stream",
			      "GtkWindow::allow_shrink", FALSE,
			      NULL)) == NULL)
	{
        cerr << "Cannot create window on display. Exiting\n";
        exit(-2);
        }
    gtk_window_position((GtkWindow*)_window, GTK_WIN_POS_MOUSE );
     
   
//========================================================================
    // Set the events that the window will respond to
   
//========================================================================
    gtk_widget_set_events(_window, gtk_widget_get_events(_window ) |
                               GDK_BUTTON_PRESS_MASK |
                               GDK_POINTER_MOTION_MASK |
                               GDK_BUTTON_RELEASE_MASK |
                               GDK_KEY_PRESS_MASK
                               );
    GTK_WIDGET_SET_FLAGS(_window, GTK_CAN_FOCUS);

   
//========================================================================
    // Assign callbacks to the relevant events
   
//========================================================================
    gtk_signal_connect( GTK_OBJECT(_window), "button_press_event",
                            GTK_SIGNAL_FUNC(buttonPress), this );
  
    ... (etc.)

The keypress events are bound to both main window, and gtk_drawing_area
under
GTK 1.2.4. 

What is *really* weird is that I can get key events some of the time
when the
window type is _POPUP. If I take the mouse into another window, then out
onto
the desktop, then directly into my window, all the key events seem to
work
fine. Does this make it a window-manager problem ? I'm using
Enlightenment 
(Version: 0.16.pre.1)

Another weird thing is that the 'arrow' keys crash the application
without a
stack trace :-( This could just be a bug in my code, though :-(

Here's hoping someone can shed light...

Simon.