Function winapi::um::winuser::SendMessageCallbackA

pub unsafe extern "system" fn SendMessageCallbackA(
    hWnd: HWND, 
    Msg: UINT, 
    wParam: WPARAM, 
    lParam: LPARAM, 
    lpResultCallBack: SENDASYNCPROC, 
    dwData: ULONG_PTR
) -> BOOL