Re: win32 menus and popups not closing when app loses focus

On Fri, 2004-04-16 at 14:34, John Ehresman wrote:
> Hi,
> I'd like to try to resolve bug #107370 -- popup windows and menus not
> closing when switching apps with the keyboard, usually with Alt-Tab.  
> This is something that some Windows users (including myself) do often and
> it is a visible problem for those users.  I'm bringing the bug up here to
> get feedback from people who normally don't look at win32 bugs.
> The root of the problem is how X11 and win32 implement grabs.  On X11, 
> the app grabs the mouse and keyboard when a menu is displayed, which 
> guarentees that the app will not lose focus until it releases the grab 
> (usually in response to a mouse up event).  On win32, there is no such 
> grab -- the user is free to shift focus with the keyboard at any time.  
> Even if gtk could enforce an X11-style grab, we probably wouldn't want to 
> since it's not what other win32 apps do.
> The solution is probably to send an event to the grabbing window, if there
> is one, when the app loses focus.  The question is which event.  One
> possibility is to send a mouse up event, but that seems like the wrong
> thing to do since no mouse up event has accually occurred.  If another 
> event is chosen, code in gtk and elsewhere will need to be modified to 
> look for the "broken grab" event and act accordingly.

This isn't the right way to do things. The right thing to do is to make
GtkMenuShell able to function without keyboard and pointer grabs using
standard focused windows.

The X11 mode with keyboard and pointer grabs can likely be built on top
of this by adding grabs.


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