Function winapi::um::winuser::CreateMDIWindowA

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