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<blockquote data-quote="dero" data-source="post: 236251" data-attributes="member: 29291">Hm, that's strange. Somehow the mouse/keyboard detection does not work...Anyone of you able to do test this C#-sniplet on his system? (The result of GetLastInputTime)[CODE]&nbsp; &nbsp; /// &lt;summary&gt;&nbsp; &nbsp; /// struct for GetLastInpoutInfo&nbsp; &nbsp; /// &lt;/summary&gt;&nbsp; &nbsp; internal struct LASTINPUTINFO&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; public uint cbSize;&nbsp; &nbsp; &nbsp; public uint dwTime;&nbsp; &nbsp; }&nbsp; &nbsp; /// &lt;summary&gt;&nbsp; &nbsp; /// The GetLastInputInfo function retrieves the time of the last input event.&nbsp; &nbsp; /// &lt;/summary&gt;&nbsp; &nbsp; /// &lt;param name=&quot;plii&quot;&gt;&lt;/param&gt;&nbsp; &nbsp; /// &lt;returns&gt;&lt;/returns&gt;&nbsp; &nbsp; [DllImport(&quot;user32.dll&quot;)]&nbsp; &nbsp; static extern bool GetLastInputInfo(ref LASTINPUTINFO plii);&nbsp; &nbsp; /// &lt;summary&gt;&nbsp; &nbsp; /// Returns the current tick as uint (pref. over Environemt.TickCount which only uses int)&nbsp; &nbsp; /// &lt;/summary&gt;&nbsp; &nbsp; /// &lt;returns&gt;&lt;/returns&gt;&nbsp; &nbsp; [DllImport(&quot;kernel32.dll&quot;)]&nbsp; &nbsp; static extern uint GetTickCount();&nbsp; &nbsp; /// &lt;summary&gt;&nbsp; &nbsp; /// This functions returns the time of the last user input recogniized,&nbsp; &nbsp; /// i.e. mouse moves or keyboard inputs.&nbsp; &nbsp; /// &lt;/summary&gt;&nbsp; &nbsp; /// &lt;returns&gt;Last time of user input&lt;/returns&gt;&nbsp; &nbsp; DateTime GetLastInputTime()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; LASTINPUTINFO lastInputInfo = new LASTINPUTINFO();&nbsp; &nbsp; &nbsp; lastInputInfo.cbSize = (uint) Marshal.SizeOf(lastInputInfo);&nbsp; &nbsp; &nbsp; if (!GetLastInputInfo(ref lastInputInfo))&nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; return DateTime.MinValue;&nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; long lastKick= lastInputInfo.dwTime;&nbsp; &nbsp; &nbsp; long tick = GetTickCount();&nbsp; &nbsp; &nbsp; long delta = lastKick - tick;&nbsp; &nbsp; &nbsp; if (delta &gt; 0)&nbsp; &nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; // there was an overflow (restart at 0) in the tick-counter!&nbsp; &nbsp; &nbsp; &nbsp; delta = delta - uint.MaxValue - 1;&nbsp; &nbsp; &nbsp; }&nbsp; &nbsp; &nbsp; return DateTime.Now.AddMilliseconds( delta );&nbsp; &nbsp; }[/CODE]Regardsdero</blockquote>

[QUOTE="dero, post: 236251, member: 29291"] Hm, that's strange. Somehow the mouse/keyboard detection does not work... Anyone of you able to do test this C#-sniplet on his system? (The result of GetLastInputTime) [CODE] /// <summary> /// struct for GetLastInpoutInfo /// </summary> internal struct LASTINPUTINFO { public uint cbSize; public uint dwTime; } /// <summary> /// The GetLastInputInfo function retrieves the time of the last input event. /// </summary> /// <param name="plii"></param> /// <returns></returns> [DllImport("user32.dll")] static extern bool GetLastInputInfo(ref LASTINPUTINFO plii); /// <summary> /// Returns the current tick as uint (pref. over Environemt.TickCount which only uses int) /// </summary> /// <returns></returns> [DllImport("kernel32.dll")] static extern uint GetTickCount(); /// <summary> /// This functions returns the time of the last user input recogniized, /// i.e. mouse moves or keyboard inputs. /// </summary> /// <returns>Last time of user input</returns> DateTime GetLastInputTime() { LASTINPUTINFO lastInputInfo = new LASTINPUTINFO(); lastInputInfo.cbSize = (uint) Marshal.SizeOf(lastInputInfo); if (!GetLastInputInfo(ref lastInputInfo)) { return DateTime.MinValue; } long lastKick= lastInputInfo.dwTime; long tick = GetTickCount(); long delta = lastKick - tick; if (delta > 0) { // there was an overflow (restart at 0) in the tick-counter! delta = delta - uint.MaxValue - 1; } return DateTime.Now.AddMilliseconds( delta ); } [/CODE] Regards dero [/QUOTE]

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