RE: [GD-Windows] WM_KILLFOCUS

[Daniel V. <vo...@ep...>]

Thanks! Shows how little I know about Windows programming :)

-- Daniel, Epic Games Inc.

> -----Original Message-----
> From: Brian Sharon [mailto:bs...@mi...]
> Sent: Tuesday, December 11, 2001 1:19 PM
> To: Daniel Vogel
> Subject: RE: [GD-Windows] WM_KILLFOCUS
> 
> 
> Wouldn't WM_ACTIVATE or WM_ACTIVATEAPP be a more logical place to handle
> restoring gamma settings?  After all, you could get WM_KILLFOCUS from
> destroying a text control while your app remains in the foreground.
> Your code still handles that case correctly by checking to for the
> current foreground window, but using WM_ACTIVATE(APP) would probably
> make things clearer to the next person who visits your code :)
> 
> Just a thought,
> 
> --brian
> 
> -----Original Message-----
> From: Daniel Vogel [mailto:vo...@ep...] 
> Sent: Monday, December 10, 2001 9:11 PM
> To: Daniel Vogel; Brian Sharon; Gamedevlists-Windows@Lists. Sourceforge.
> Net
> Subject: RE: [GD-Windows] WM_KILLFOCUS
> 
> I should've elaborated more what I was trying to do. My goal was to
> ensure
> that our engine (most importantly the Editor) restores the gamma
> settings
> when loosing focus which the following codesnippet does. At first I
> didn't
> have the GetForegroundWindow line so that's why I was wondering in which
> cases wParam were NULL.
> 
> case WM_KILLFOCUS:
> {
> 	guard(WM_KILLFOCUS);
> 
> 	DWORD ProcID;
> 	HWND hWnd = wParam ? (HWND) wParam : ::GetForegroundWindow();
> 
> 	GetWindowThreadProcessId(hWnd, &ProcID);
> 	if( ProcID != GetCurrentProcessId() )
> 		RenDev->RestoreGamma();
> 
> 	...
> 
> 	return 0;
> 	unguard;
> }
> 
> -- Daniel, Epic Games Inc.
> 
> > -----Original Message-----
> > From: gam...@li...
> > [mailto:gam...@li...]On Behalf Of
> > Daniel Vogel
> > Sent: Monday, December 10, 2001 8:50 PM
> > To: Brian Sharon; Gamedevlists-Windows@Lists. Sourceforge. Net
> > Subject: RE: [GD-Windows] WM_KILLFOCUS
> >
> >
> > I was manually checking whether wParam was an owned window before
> > restoring
> > the gamma. Looks like I could simply use GetFocus. Thanks for the link
> :)
> >
> > -- Daniel, Epic Games Inc.
> >
> > > -----Original Message-----
> > > From: gam...@li...
> > > [mailto:gam...@li...]On Behalf
> Of
> > > Brian Sharon
> > > Sent: Monday, December 10, 2001 8:30 PM
> > > To: Daniel Vogel; Gamedevlists-Windows@Lists. Sourceforge. Net
> > > Subject: RE: [GD-Windows] WM_KILLFOCUS
> > >
> > >
> > > See http://msdn.microsoft.com/library/en-us/winui/keybinpt_5z8u.asp
> > >
> > > Keyboard focus is a property that's passed between the windows in
> the
> > > foreground thread.  And if something in your app calls
> SetFocus(NULL)
> > > then the HWND would be NULL and your app would be ignoring keyboard
> > > messages.  I'm not sure what you would want to retrieve in that
> case?
> > >
> > > --brian
> > >
> > > -----Original Message-----
> > > From: Daniel Vogel [mailto:vo...@ep...]
> > > Sent: Monday, December 10, 2001 5:18 PM
> > > To: Gamedevlists-Windows@Lists. Sourceforge. Net
> > > Subject: [GD-Windows] WM_KILLFOCUS
> > >
> > > >From the MSDN docs:
> > >
> > > "wParam
> > > Handle to the window that receives the keyboard focus. This
> parameter
> > > can be
> > > NULL."
> > >
> > > In which cases is it NULL and is there a chance to retrieve the HWND
> > > anyways?
> > >
> > > -- Daniel, Epic Games Inc.
> > >
> > >
> > >
> > > _______________________________________________
> > > Gamedevlists-windows mailing list
> > > Gam...@li...
> > > https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> > >
> >
> >
> > _______________________________________________
> > Gamedevlists-windows mailing list
> > Gam...@li...
> > https://lists.sourceforge.net/lists/listinfo/gamedevlists-windows
> >
>