02 displays a dialog box will automatically disappear

01 references

 [DllImport("user32.dll")]
        public static extern int MessageBoxTimeoutA(IntPtr hWnd, string msg, string Caps, int type, int Id, int time);   //引用DLL

02 calling code

MessageBoxTimeoutA ((IntPtr) 0 , " 3 seconds off automatically " , " message box " , 64 , 0 , 2000 );     // directly after 3 seconds off automatically calls

03 typede type value

 

 04 Return Values

 05 The question now is how the countdown? (After write)

06 actual cases

 public partial class MainWindow : Window
    {
        [DllImport("user32.dll")]
        public static extern int MessageBoxTimeoutA(IntPtr hWnd, string msg, string Caps, int type, int Id, int time);   //引用DLL
        public MainWindow()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            MessageBoxTimeoutA ((IntPtr) 0 , " 3 seconds off automatically " , " message box " , 64 , 0 , 2000 );     // close automatically invoked directly after 3 seconds 

        } 
    }