bool Prog_Init()
{
        .
        .
        .
lpdd->SetCooperativeLevel(hWndMain,DDSCL_FULLSCREEN | DDSCL_EXCLUSIVE | DDSCL_ALLOWREBOOT);

	//enumerate the displaymodes
	dwDisplayModeCount=0;

	lpdd->EnumDisplayModes(0,NULL,NULL,EnumModesCallbackCount);

	DisplayModeList=new DisplayMode[dwDisplayModeCount];
	dwDisplayModeCount=0;

	lpdd->EnumDisplayModes(0,NULL,NULL,EnumModesCallbackList);

	//pick a display mode
	DisplayMode TestMode;
	TestMode.dwWidth=0;
	TestMode.dwHeight=0;
	TestMode.dwBPP=0;
	DWORD index;
	bool found=false;

	for(index=0;(indexTestMode.dwWidth)
			{
				TestMode.dwWidth=DisplayModeList[index].dwWidth;
				TestMode.dwHeight=DisplayModeList[index].dwHeight;
				TestMode.dwBPP=DisplayModeList[index].dwBPP;
				found=true;
			}
		}
	}

	if(!found)
	{
		return(false);
	}

	//set the display mode
	hr=lpdd->SetDisplayMode(TestMode.dwWidth,TestMode.dwHeight,TestMode.dwBPP,0,0);

	return(true);//return success
}

//enumeration-count
HRESULT WINAPI EnumModesCallbackCount(
  LPDDSURFACEDESC2 lpDDSurfaceDesc,  
  LPVOID lpContext                   
)
{
	//increment the count variable
	dwDisplayModeCount++;

	//continue the enumeration
	return(DDENUMRET_OK);
}

//enumeration-list
HRESULT WINAPI EnumModesCallbackList(
  LPDDSURFACEDESC2 lpDDSurfaceDesc,  
  LPVOID lpContext                   
)
{
	//copy applicable information to the list
	DisplayModeList[dwDisplayModeCount].dwWidth=lpDDSurfaceDesc->dwWidth;
	DisplayModeList[dwDisplayModeCount].dwHeight=lpDDSurfaceDesc->dwHeight;
	DisplayModeList[dwDisplayModeCount].dwBPP=lpDDSurfaceDesc->ddpfPixelFormat.dwRGBBitCount;

	//increment the count variable
	dwDisplayModeCount++;

	//continue the enumeration
	return(DDENUMRET_OK);
}
    

quote:Original post by Samith
thank you, but, why are we deviding by width and height etc?

// This is a C++-style comment. Everything to the end of this line will be ignored/* This is a C-style comment.   It can range over several lines,   and it can appear in the middle of executable code: */int main( void /* take no parameters */ ){  return 0;}