Trying to enumerate through Outputs(Direct3D)

Posted 23 January 2012 - 04:07 PM

Hey all,
I am trying to enumerate through outputs on an adapter in Direct3D but I am getting an Access Violation Reading Location 0x00000000. The error squarely points to my function calling EnumOutputs(). So far I'ved tried to search MSDN, I followed their how to's but I am still getting this error. I am fairly new to Direct3D so I am not sure how to troubleshoot this, any help would be appreciated. This is what I have so far, shown in a concise fashion:

Any help is appreciated.

Thank you.

IDXGIDevice*			mpDXGIDevice;
IDXGIAdapter*			mpDXGIAdapter;
IDXGIFactory*			mpDXGIFactory;
IDXGIOutput*			mpDXGIOutput;

mpDXGIDevice			= 0;
mpDXGIAdapter			= 0;
mpDXGIFactory			= 0;
mpDXGIOutput			= 0;

//Creating the device
HR(D3D10CreateDevice(
	0,
	md3dDriverType,
	0,
	createDeviceFlags,
	D3D10_SDK_VERSION,
	&md3dDevice));

//Retrieving the factory in order to disable Alt+enter
HR(md3dDevice->QueryInterface(__uuidof(IDXGIDevice), (void**)&mpDXGIDevice));
HR(mpDXGIDevice->GetParent(__uuidof(IDXGIAdapter), (void**)&mpDXGIAdapter));
HR(mpDXGIAdapter->GetParent(__uuidof(IDXGIFactory), (void**)&mpDXGIFactory));

//Creating the swap chain
HR(mpDXGIFactory->CreateSwapChain(
	md3dDevice,
	&sd,
	&mSwapChain));

//Disabling alt+enter
HR(mpDXGIFactory->MakeWindowAssociation(mhMainWnd, DXGI_MWA_NO_WINDOW_CHANGES | DXGI_MWA_NO_ALT_ENTER));

//Enumerating through Adapters
while(mpDXGIFactory->EnumAdapters(numAdapters, &mpDXGIAdapter) != DXGI_ERROR_NOT_FOUND)
{
if(mpDXGIAdapter->CheckInterfaceSupport(__uuidof(ID3D10Device), NULL) == S_OK)
{
	vAdapters.push_back(mpDXGIAdapter);
	++numAdapters;
}
}

//Enumerating through outputs to get the total number of outputs 
while(mpDXGIAdapter->EnumOutputs(numOutputs, &mpDXGIOutput) != DXGI_ERROR_NOT_FOUND)
{
++numOutputs;
}


ReleaseCOM(mpDXGIDevice);
ReleaseCOM(mpDXGIAdapter);
ReleaseCOM(mpDXGIFactory);
ReleaseCOM(mpDXGIOutput);