C# Signature:

[DllImport("kernel32.dll", SetLastError=true)]
static extern bool GetSystemTimes (
            out FILETIME lpIdleTime,
            out FILETIME lpKernelTime,
            out FILETIME lpUserTime
            );
[DllImport("kernel32.dll")]
static extern void GetSystemTime(out SYSTEMTIME lpSystemTime);

VB Signature:

<DllImport("kernel32.dll")> _
Shared Sub GetSystemTime(ByRef time As SYSTEMTIME)
End Sub

User-Defined Types:

None.

Notes:

None.

See SYSTEMTIME.

Tips & Tricks:

Please add some!

Sample Code:

static int GetIdleTime ()

{

    FILETIME idleTime, kernelTime, userTime;
    GetSystemTimes(out idleTime, out kernelTime, out userTime);
    ulong idleTimeLong = ((ulong)idleTime.dwHighDateTime << 32) + (uint)idleTime.dwLowDateTime;
    return (int)(idleTimeLong / TimeSpan.TicksPerMillisecond);

}

Alternative Managed API:

Do you know one? Please contribute it!

[C#]

// Declares a class member for each structure element.

    [ StructLayout( LayoutKind.Sequential )]
    public class SystemTime
    {
       public ushort year;
       ...
       public ushort milliseconds;
    }

    public class LibWrap
    {
      // Declares a managed prototype for the unmanaged function.
      [ DllImport( "Kernel32.dll" )]
      public static extern void GetSystemTime( [In,Out] SystemTime st );
    }

Alternative Managed API:

Do you know one? Please contribute it!

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