screensaver/workstation lock detection

[Matthew Webster]

Does anyone know if it is possible to detect when/if the workstation is locked (Win+L) and/or when the screensaver is activated?

 

Is there a call to make, say, every 5 seconds which could check the status of such functions?

 

I'm using C#, btw.

 

Matt.

[PlausiblyDamp]

public class Class1
{
[DllImport("user32.dll", EntryPoint="SystemParametersInfo", SetLastError = true)]
public static extern bool SystemParametersInfo(uint action, uint param, ref int vparam, uint init);
const int SPI_GETSCREENSAVERRUNNING = 0x0072;

public static bool IsSaverRunning()
{
int IsRunning = 0;
SystemParametersInfo(SPI_GETSCREENSAVERRUNNING,0,ref IsRunning,0);
		
if (IsRunning==0) 
	return false;
else 
	return true;
}
}
}

 

this can be called from a standard windows timer or similar like

if (Class1.IsSaverRunning())
{
//Handle saver running here
}

 

Should work on all versions of windows from 98 / win2K - will not work on 95 or NT4

[Matthew Webster]

Thankyou very much,

 

Matt.