Function user32::SendMessageTimeoutA

pub unsafe extern "system" fn SendMessageTimeoutA(
    hWnd: HWND, 
    Msg: UINT, 
    wParam: WPARAM, 
    lParam: LPARAM, 
    fuFlags: UINT, 
    uTimeout: UINT, 
    lpdwResult: PDWORD_PTR
) -> LRESULT