Turn on screensaver programmatically in C#

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I need C# code to turn on/off windows screensaver programmatically.
I googled and found some code.

C#

[DllImport("User32.dll")]
public static extern int SendMessage
    (IntPtr hWnd,
    uint Msg,
    uint wParam,
    uint lParam);
public const uint WM_SYSCOMMAND = 0x112;
public const uint SC_SCREENSAVE = 0xF140;
public enum SpecialHandles
{
    HWND_DESKTOP = 0x0,
    HWND_BROADCAST = 0xFFFF
}
public static void TurnOnScreenSaver()
{
    SendMessage(
        new IntPtr((int)SpecialHandles.HWND_BROADCAST),
        WM_SYSCOMMAND,
        SC_SCREENSAVE,
        0);
}

Is it complete code? Qhere is the main method? How can i execute it?
Qhat should I add to this code?

I use:
.NET framework 3.5
Windows XP professional service pack 2

Posted 9-Oct-10 22:48pm

akul123

Updated 10-Oct-10 0:11am

Abhinav S

v2

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akul123 · Answer 1 · 2010-10-10T19:39:00

Thanks for your reply. that works fine.
i need another method like TurnOnScreenSaver() that stops the screen saver. That is i wanna turn on the screen saver first (already done) then on a specific condition i wanna turn off the screen saver and continue the process(on and off) . i don't wanna use Timer.

OriginalGriff · Answer 2 · 2010-10-09T23:01:00

Yes that should work - all you have to do is call TurnOnScreenSaver when you want to use it.
For example:

C#

private void button1_Click_1(object sender, EventArgs e)
    {
    Timer t = new Timer();
    t.Interval = 2000;
    t.Tick += new EventHandler(t_Tick);
    t.Start();
    }
void t_Tick(object sender, EventArgs e)
    {
    Timer t = sender as Timer;
    if (t != null)
        {
        t.Stop();
        }
    TurnOnScreenSaver();
    }

Turn on screensaver programmatically in C#

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