Preventing Screen Saver from Windows Forms application

[KK]

Dear All
I want to prevent the screen saver getting activated when my application is
running.
I have the following code, but still screen saver is activated. What
corrections I should make to prevent screen saver running to the following
code.

public class MainForm : System.Windows. Forms.Form
{
private static readonly int SC_SCREENSAVE = 0xF140;
private static readonly int WM_SYSCOMMAND = 0x0112;
private static readonly int WM_CLOSE = 0x0010;
protected override void WndProc(ref Message m)
{
if (WM_SYSCOMMAND == m.Msg && SC_SCREENSAVE == (int)m.WParam)
{
m.Result = (IntPtr)(-1);
System.Diagnost ics.Trace.Write Line("Screen Saver event handled");
return;
}
base.WndProc(re f m)
}
}

Krishna Rao K Lucid Software Ltd 104, NSIC STP Complex | Guindy Industrial
Estate | Ekkattuthangal | Chennai 600032 ' [phone] / 76 , +91 98407
28998

[Michael Nemtsev, MVP]

Hello KK,

Make P/Invoke call to SystemParameter sInfo with SPI_SETSCREENSA VEACTIVE,
setting uiParam = false to disable, true to activate

http://pinvoke.net/default.aspx/user...etersInfo.html

---
WBR,
Michael Nemtsev [.NET/C# MVP] :: blog: http://spaces.live.com/laflour

"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo
KDear All
KI want to prevent the screen saver getting activated when my
Kapplication is
Krunning.
KI have the following code, but still screen saver is activated. What
Kcorrections I should make to prevent screen saver running to the
Kfollowing code.
K>
Kpublic class MainForm : System.Windows. Forms.Form
K{
Kprivate static readonly int SC_SCREENSAVE = 0xF140;
Kprivate static readonly int WM_SYSCOMMAND = 0x0112;
Kprivate static readonly int WM_CLOSE = 0x0010;
Kprotected override void WndProc(ref Message m)
K{
Kif (WM_SYSCOMMAND == m.Msg && SC_SCREENSAVE == (int)m.WParam)
K{
Km.Result = (IntPtr)(-1);
KSystem.Diagnos tics.Trace.Writ eLine("Screen Saver event
Khandled");
Kreturn;
K}
Kbase.WndProc(r ef m)
K}
K}
KKrishna Rao K Lucid Software Ltd 104, NSIC STP Complex | Guindy
KIndustrial Estate | Ekkattuthangal | Chennai 600032 ' [phone]
K2273 / 76 , [phone]
K>

[KK]

Hi Nemtsev
Thank you very much. i have small doubt.
When we call SystemParameter sInfo as suggested, what's the scope of this
method call.
I mean will it disable the screen saver completly or only during the life
time of my application?
Thanks once again.

<Michael Nemtsev>; "MVP" <ne*****@msn.co mwrote in message
news:3d******** *************** ***@msnews.micr osoft.com...

Hello KK,

Make P/Invoke call to SystemParameter sInfo with SPI_SETSCREENSA VEACTIVE,
setting uiParam = false to disable, true to activate

http://pinvoke.net/default.aspx/user...etersInfo.html

---
WBR, Michael Nemtsev [.NET/C# MVP] :: blog:
http://spaces.live.com/laflour
"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo

KDear All
KI want to prevent the screen saver getting activated when my
Kapplication is
Krunning.
KI have the following code, but still screen saver is activated. What
Kcorrections I should make to prevent screen saver running to the
Kfollowing code.
KKpublic class MainForm : System.Windows. Forms.Form
K{
Kprivate static readonly int SC_SCREENSAVE = 0xF140;
Kprivate static readonly int WM_SYSCOMMAND = 0x0112;
Kprivate static readonly int WM_CLOSE = 0x0010;
Kprotected override void WndProc(ref Message m)
K{
Kif (WM_SYSCOMMAND == m.Msg && SC_SCREENSAVE == (int)m.WParam)
K{
Km.Result = (IntPtr)(-1);
KSystem.Diagnos tics.Trace.Writ eLine("Screen Saver event
Khandled");
Kreturn;
K}
Kbase.WndProc(r ef m)
K}
K}
KKrishna Rao K Lucid Software Ltd 104, NSIC STP Complex | Guindy
KIndustrial Estate | Ekkattuthangal | Chennai 600032 ' [phone]
K2273 / 76 , [phone]
K>

[=?Utf-8?B?UGV0ZXIgQnJvbWJlcmcgW0MjIE1WUF0=?=]

Well, it should be pretty easy to try it and find out, yes? Let us know.

-- Peter
Recursion: see Recursion
site: http://www.eggheadcafe.com
unBlog: http://petesbloggerama.blogspot.com
BlogMetaFinder: http://www.blogmetafinder.com

"KK" wrote:

Hi Nemtsev
Thank you very much. i have small doubt.
When we call SystemParameter sInfo as suggested, what's the scope of this
method call.
I mean will it disable the screen saver completly or only during the life
time of my application?
Thanks once again.

<Michael Nemtsev>; "MVP" <ne*****@msn.co mwrote in message
news:3d******** *************** ***@msnews.micr osoft.com...

Hello KK,

Make P/Invoke call to SystemParameter sInfo with SPI_SETSCREENSA VEACTIVE,
setting uiParam = false to disable, true to activate

http://pinvoke.net/default.aspx/user...etersInfo.html

---
WBR, Michael Nemtsev [.NET/C# MVP] :: blog:
http://spaces.live.com/laflour
"The greatest danger for most of us is not that our aim is too high and we
miss it, but that it is too low and we reach it" (c) Michelangelo

KDear All
KI want to prevent the screen saver getting activated when my
Kapplication is
Krunning.
KI have the following code, but still screen saver is activated. What
Kcorrections I should make to prevent screen saver running to the
Kfollowing code.
KKpublic class MainForm : System.Windows. Forms.Form
K{
Kprivate static readonly int SC_SCREENSAVE = 0xF140;
Kprivate static readonly int WM_SYSCOMMAND = 0x0112;
Kprivate static readonly int WM_CLOSE = 0x0010;
Kprotected override void WndProc(ref Message m)
K{
Kif (WM_SYSCOMMAND == m.Msg && SC_SCREENSAVE == (int)m.WParam)
K{
Km.Result = (IntPtr)(-1);
KSystem.Diagnos tics.Trace.Writ eLine("Screen Saver event
Khandled");
Kreturn;
K}
Kbase.WndProc(r ef m)
K}
K}
KKrishna Rao K Lucid Software Ltd 104, NSIC STP Complex | Guindy
KIndustrial Estate | Ekkattuthangal | Chennai 600032 ' [phone]
K2273 / 76 , [phone]
K>