Function user32::CreateMDIWindowW

pub unsafe extern "system" fn CreateMDIWindowW(
    lpClassName: LPCWSTR, 
    lpWindowName: LPCWSTR, 
    dwStyle: DWORD, 
    X: c_int, 
    Y: c_int, 
    nWidth: c_int, 
    nHeight: c_int, 
    hWndParent: HWND, 
    hInstance: HINSTANCE, 
    lParam: LPARAM
) -> HWND