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switching between fullscreen and windows

General and Gameplay Programming Programming

Started by delbogun August 28, 2002 01:30 AM

5 comments, last by delbogun 21 years, 7 months ago

delbogun

122

Author

August 28, 2002 01:30 AM

hi! i have a problem to switch between fullscreen and window while the application is running. i know how to do it before i start the application, i do it like this:

      
	switch(cScreenMode)
	{
		case 0: { if(!(hWnd = CreateWindow("app", "app", WS_OVERLAPPED | WS_SYSMENU | WS_VISIBLE, 0, 0, cResolutionX, cResolutionY, NULL, NULL, hInstance, NULL))) { return(0); } } break;
		case 1: { if(!(hWnd = CreateWindow("app", "app", WS_POPUP | WS_VISIBLE, 0, 0, cResolutionX, cResolutionY, NULL, NULL, hInstance, NULL))) { return(0); } } break;
	}

how do I do it while the app is running? [edited by - delbogun on August 28, 2002 7:47:00 AM] [edited by - delbogun on August 28, 2002 7:47:40 AM]

DerekSaw

243

August 28, 2002 01:38 AM

Use a boolean variable, say bFullScreen, and handles WM_KEYUP (or WM_KEYDOWN) to check for Alt-Enter?

"after many years of singularity, i'm still searching on the event horizon"

delbogun

122

Author

August 28, 2002 06:44 AM

no, i mean... i''ve already have created the window that will act as fullscreen or window. i can''t use createwindow again every time the user presses alt+enter
is there a way to change the flags while the app is running?

Burning_Ice

122

August 28, 2002 08:55 AM

Hi

You have to use the ChangeDisplaySettings function for this.
i do it like this:

  bool EnterFullscreen (){    DEVMODE newSettings;	    // now fill the DEVMODE with standard settings, mainly monitor frequenzy	    			    EnumDisplaySettings ( NULL, 0, &newSettings );    //  set desired screen size/res	    newSettings.dmPelsWidth  = 800;			    newSettings.dmPelsHeight = 600;			    newSettings.dmBitsPerPel = 16;				    // set those flags to let the next function know what we want to change    newSettings.dmFields = DM_BITSPERPEL | DM_PELSWIDTH | DM_PELSHEIGHT;    // and apply the new settings    if (ChangeDisplaySettings(&newSettings,CDS_FULLSCREEN) != DISP_CHANGE_SUCCESSFUL )     return false; // in case of error     else return true;}// and to reset the screen  on program exit:void ResetScreen (){    // this resets the screen to the registry-stored values    ChangeDisplaySettings ( NULL, 0 );}

that works for me and sets my OpenGL-enabled windows into fullscreen mode...hope it works for you too