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GetLastInputInfo (user32)
 
.
Summary

C# Signature:

[DllImport("user32.dll")]
static extern bool GetLastInputInfo(out LASTINPUTINFO plii);

User-Defined Types:

LASTINPUTINFO

Notes:

Very usefull to detect user-idle state of an application

Tips & Tricks:

Please add some!

Sample Code:

This function retrieves the time since last user input

    static int GetLastInputTime()
    {
        int idleTime = 0;
        LASTINPUTINFO lastInputInfo = new LASTINPUTINFO();
        lastInputInfo.cbSize = Marshal.SizeOf( lastInputInfo );
        lastInputInfo.dwTime = 0;

        int envTicks = Environment.TickCount;

        if( GetLastInputInfo( ref lastInputInfo ) )
        {
        int lastInputTick = lastInputInfo.dwTime;

        idleTime = envTicks - lastInputTick;
        }

        return (( idleTime > 0 ) ? ( idleTime / 1000 ) : idleTime );
    }

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