Re: [GD-Windows] Alt+Tab in fullscreen with no other apps running

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Are you resetting display mode when you receive WM_SYSCOMMAND,SC_MINIMIZE?

Also one trick more... in some apps I think I used to set a bool
when receiveing a window resize/minimize/maximize command and then
just eat all window size related messages without processing them
until we empty the queue (no more messages pending). This kills all
quirks that Windows throw on you as sideeffects of changing a window
size.

Alen

Oscar wrote:

> Replying to my own post...

> I eventually got it working by recording the HWND passed with the 
> WM_CANCELMODE message, then next time around my game loop calling 
> ShowWindow( hWnd, SW_MINIMIZE ). This may not be the ideal solution to the
> problem so I'd still be interested in hearing if there's a better way.

> Thanks to all who helped,

> Oscar.

> ----- Original Message ----- 
> From: "Oscar Cooper" <oc...@fr...>
> To: "Game Development for MS Windows" 
> <gam...@li...>
> Sent: Thursday, September 06, 2007 12:54 PM
> Subject: Re: [GD-Windows] Alt+Tab in fullscreen with no other apps running

>>I still haven't got this working, testing under WinXP  
>>
>> Alen's idea gets me most of the way there, but my window gets restored
>> immediately after being minimised. Looking through the windows message
>> trace, it looks like the minimise completes successfully: the 
>> WM_SYSCOMMAND
>> triggers a bunch of further messages including the WM_ACTIVATE 
>> (WA_INACTIVE)
>> and WM_ACTIVATEAPP (wParam=FALSE). However I then immediately get a
>> WM_ACTIVATE (WA_ACTIVE) message, which I assume is generated by Windows in
>> response to certain properties of my window or because I'm not handling 
>> some
>> messages correctly.
>>
>> In addition to Alen's code I've also tried experimenting with the window
>> style flags, and even tried calling SetWindowPos to force my window first 
>> to
>> the bottom of the z-order and then again to put it back on top, to make 
>> sure
>> it's not TOPMOST, but I'm still missing something.
>>
>> I hate working with API's I don't know very well, I feel like such a n00b
>> ;->
>>
>> Can anyone bail me out?
>>
>> Cheers,
>>
>> Oscar.
>>
>>
>>
>> ----- Original Message ----- 
>> From: "Alen Ladavac" <ale...@cr...>
>> To: <gam...@li...>
>> Sent: Tuesday, September 04, 2007 5:03 PM
>> Subject: Re: [GD-Windows] Alt+Tab in fullscreen with no other apps running
>>
>>
>>> Hi Oscar,
>>>
>>> IIRC, we've always been doing something like
>>>
>>>      if( (msg.message==WM_ACTIVATE && (LOWORD(msg.wParam)==WA_INACTIVE ||
>>> HIWORD(msg.wParam)))
>>>       ||  msg.message==WM_CANCELMODE
>>>       ||  msg.message==WM_KILLFOCUS
>>>       || (msg.message==WM_ACTIVATEAPP && !msg.wParam)) {
>>>
>>>         if (bInFullScreen) {
>>>           PostMessage(NULL, WM_SYSCOMMAND, SC_MINIMIZE, 0);
>>>         }
>>>
>>> That seems to work for us, YMMV.
>>>
>>> HTH,
>>> Alen
>>>
>>> Oscar wrote:
>>>
>>>> Hi,
>>>
>>>> Does anyone know if there's something I have to do (or avoid doing) to
>>>> make
>>>> my game minimise when the player hits Alt+Tab whilst running in
>>>> fullscreen
>>>> with no other apps running?
>>>
>>>> My game isn't minimising in pre-Vista versions of Windows, but other
>>>> games
>>>> seem to do so. Windows isn't sending me any WM_ACTIVATE or 
>>>> WM_ACTIVATEAPP
>>>> messages. I am getting WM_NCACTIVATE and WM_CANCELMODE, and I'm passing
>>>> these on to the default WndProc expecting it to handle any necessary
>>>> plumbing.
>>>
>>>> With other apps running the Alt+Tab behaviour is correct in fullscreen,
>>>> but
>>>> in this case Windows is sending me a completely different sequence of
>>>> messages.
>>>
>>>> Thanks in advance,
>>>
>>>> Oscar Cooper
>>>> Lead Programmer
>>>> Frontier Developments Ltd
>>>
>>>
>>>
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>>>
>>>
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>>
>>
>>
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-- 
Alen