fullscreen

Well doing a little research and application of code, here's what I've been able to come up with.

First, you will need to register the Alt+Tab hotkey so you can detect in in the message loop. You only need to do this once.

RegisterHotKey( hWnd, 0, MOD_ALT, VK_TAB );

Second, you will need to add in the detection code to your WindowProc function.

case WM_HOTKEY:	if( lParam == MAKELONG( MOD_ALT, VK_TAB ) )	{	}break;

Now the rest is up to you. Right now, the code that you put into that if statement will be called when the user presses Alt+Tab. ideally, you would want to probabally pause your game, and reset the display to that of the desktop mode. Then when you get another message to your program, WM_ACTIVATE in particular, then you can check to see if the game was 'paused'. If it was, you resume the game and are back in fullscreen mode. Good luck!

References:
Lock Windows Desktop
WM_HOTKEY
RegisterHotKey

I think windows sends a WM_ACTIVATE message in this case.


[edit]
also I forgot to mention, anytime alt is pressed while pressing a key windows sends a WM_SYSCOMMAND message and when you get that message, simply check the key you want by using the getkeystate macro, for instance this checks to see if alt + enter has been pressed, a common way to alternate b/w windowed and fullscreen mode.

case WM_SYSCOMMAND:
if(GetKeyState(VK_RETURN)&0x8000) {
ScreenDesc.bFullscreen = !ScreenDesc.bFullscreen;
changeDisplay(&ScreenDesc, hwnd);
}
else
return DefWindowProc(hwnd, msgID, wParam, lParam);
break;

however for alt tab you should use the above method since it takes care of more things that you probably havnen't thought of.

Tim

[Edited by - timw on September 17, 2005 2:11:04 AM]

Here's what I settled upon:



It seems to work.

mike
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