DirectX11 LoadLibrary

#include <d3d11.h>

D3D_DRIVER_TYPE         g_driverType;
D3D_FEATURE_LEVEL       g_featureLevel;
ID3D11Device*           g_pd3dDevice = nullptr;
ID3D11DeviceContext*    g_pImmediateContext = nullptr;

typedef HRESULT (__stdcall *FPD3D11CREATEDEVICE)(
	IDXGIAdapter *pAdapter,
	D3D_DRIVER_TYPE DriverType,
	HMODULE Software,
	UINT Flags,
	CONST D3D_FEATURE_LEVEL *pFeatureLevels,
	UINT FeatureLevels,
	UINT SDKVersion,
	ID3D11Device **ppDevice,
	D3D_FEATURE_LEVEL *pFeatureLevel,
	ID3D11DeviceContext **ppImmediateContext
	);

HRESULT InitDevice()
{
	HMODULE hModule = LoadLibrary("d3d11.dll");
	if (hModule == NULL)
	{
		return S_FALSE;
	}

	FPD3D11CREATEDEVICE lpD3D11CreateDevice = (FPD3D11CREATEDEVICE)GetProcAddress(hModule, "D3D11CreateDevice");
	if (lpD3D11CreateDevice == NULL)
	{
		FreeLibrary(hModule);
		return S_FALSE;
	}

	HRESULT hr = S_OK;
	UINT createDeviceFlags = 0;
#ifdef _DEBUG
	createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
#endif

	D3D_DRIVER_TYPE driverTypes[] =
	{
		D3D_DRIVER_TYPE_HARDWARE,
		D3D_DRIVER_TYPE_WARP,
		D3D_DRIVER_TYPE_REFERENCE,
	};
	UINT numDriverTypes = ARRAYSIZE(driverTypes);

	D3D_FEATURE_LEVEL featureLevels[] =
	{
		D3D_FEATURE_LEVEL_11_0,
	};
	UINT numFeatureLevels = ARRAYSIZE(featureLevels);

	for (UINT driverTypeIndex = 0; driverTypeIndex < numDriverTypes; driverTypeIndex++)
	{
		g_driverType = driverTypes[driverTypeIndex];
		hr = (*lpD3D11CreateDevice)(nullptr, g_driverType, nullptr, createDeviceFlags, featureLevels, numFeatureLevels,
			D3D11_SDK_VERSION, &g_pd3dDevice, &g_featureLevel, &g_pImmediateContext);

		if (SUCCEEDED(hr))
			break;
	}

	D3D11_CREATE_DEVICE_FLAG flag = (D3D11_CREATE_DEVICE_FLAG)g_pd3dDevice->GetCreationFlags();

	return hr;
}

void main()
{

	InitDevice();
	return;
}