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NULL pointer at CreateDevice

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This is my code for createdevice
bool D3DInit(void)
	iD3D8 = Direct3DCreate8(D3D_SDK_VERSION);
	if(iD3D8 == NULL)
		return false;

	ZeroMemory(&d3ddm, sizeof(D3DDISPLAYMODE));

        //This is the code used for fullscreen

	//d3ddm.Width = 640;

	//d3ddm.Height = 480;

	//d3ddm.RefreshRate = 0; //Default

	//d3ddm.Format = D3DFMT_R5G6B5;

	iD3D8->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm); //For windowed mode

	ZeroMemory(&d3dpp, sizeof(D3DPRESENT_PARAMETERS));
	d3dpp.Windowed = true;
	d3dpp.SwapEffect = D3DSWAPEFFECT_DISCARD;
	d3dpp.BackBufferFormat = d3ddm.Format;

        //This is the code used for fullscreen

	//d3dpp.BackBufferFormat = d3ddm.Format;

	//d3dpp.Windowed = false;

	//d3dpp.SwapEffect = D3DSWAPEFFECT_FLIP;

	//d3dpp.FullScreen_RefreshRateInHz = D3DPRESENT_RATE_DEFAULT;

	//d3dpp.FullScreen_PresentationInterval = D3DPRESENT_INTERVAL_DEFAULT;

		return false;

	return true;


I can´t find anything wrong with it, still when i try to run it in fullscreen my device becomes a NULL pointer. Any clues? sHaKaZeD [edited by - shakazed on July 24, 2002 9:29:41 AM]

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Use the debug runtime, bump up the debug level and look in your debug output.

D3D *will* tell you what the problem is in the output. There is probably a member of the present parameters set to something wrong.

Simon O''Connor
Creative Asylum Ltd

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