pub unsafe extern "system" fn CreateWindowExA(
dwExStyle: DWORD,
lpClassName: LPCSTR,
lpWindowName: LPCSTR,
dwStyle: DWORD,
x: c_int,
y: c_int,
nWidth: c_int,
nHeight: c_int,
hWndParent: HWND,
hMenu: HMENU,
hInstance: HINSTANCE,
lpParam: LPVOID
) -> HWND