DirectX11 c++ imgui неразрешенный внешний символ

#include <d3d11.h>
 
typedef HRESULT(WINAPI *_D3D11CreateDeviceAndSwapChain)(
    _In_opt_ IDXGIAdapter* pAdapter,
    D3D_DRIVER_TYPE DriverType,
    HMODULE Software,
    UINT Flags,
    _In_reads_opt_(FeatureLevels) CONST D3D_FEATURE_LEVEL* pFeatureLevels,
    UINT FeatureLevels,
    UINT SDKVersion,
    _In_opt_ CONST DXGI_SWAP_CHAIN_DESC* pSwapChainDesc,
    _COM_Outptr_opt_ IDXGISwapChain** ppSwapChain,
    _COM_Outptr_opt_ ID3D11Device** ppDevice,
    _Out_opt_ D3D_FEATURE_LEVEL* pFeatureLevel,
    _COM_Outptr_opt_ ID3D11DeviceContext** ppImmediateContext
    );
 
int main(int, char**)
{
    _D3D11CreateDeviceAndSwapChain D3D11CreateDeviceAndSwapChain = (_D3D11CreateDeviceAndSwapChain)GetProcAddress(LoadLibrary("d3d11"), "D3D11CreateDeviceAndSwapChain");
    UINT createDeviceFlags = 0;
    //createDeviceFlags |= D3D11_CREATE_DEVICE_DEBUG;
    D3D_FEATURE_LEVEL featureLevel;
    const D3D_FEATURE_LEVEL featureLevelArray[2] = { D3D_FEATURE_LEVEL_11_0, D3D_FEATURE_LEVEL_10_0, };
    if (D3D11CreateDeviceAndSwapChain(NULL, D3D_DRIVER_TYPE_HARDWARE, NULL, createDeviceFlags, featureLevelArray, 2, D3D11_SDK_VERSION, &sd, &g_pSwapChain, &g_pd3dDevice, &featureLevel, &g_pd3dDeviceContext) != S_OK)
        return false;
 
    CreateRenderTarget();
    return true;
}