troubleshooting Question

Obtaining idle time via VB.NET.

Avatar of Sheldon Livingston
Sheldon LivingstonFlag for United States of America asked on
Visual Basic.NET.NET Programming
8 Comments1 Solution208 ViewsLast Modified:
Happy new year all...

I am trying to get the system idle time via version 4 of the .NET framework using VB.NET.

Public Class idleTime
    Public Structure LASTINPUTINFO
        Public cbSize As UInteger
        Public dwTime As UInteger
    End Structure

    Private Shared Function GetLastInputInfo(ByRef plii As LASTINPUTINFO) As Boolean
    End Function

    Public Function GetInactiveTime() As String ' Nullable(Of TimeSpan)
        info.cbSize = CUInt(Marshal.SizeOf(info))

        If (GetLastInputInfo(info)) Then
            Return TimeSpan.FromMilliseconds(Environment.TickCount - info.dwTime).ToString '  
            Return "N/A" 'Nothing
        End If
    End Function
End Class
Through testing I see that info.dwTime always returns zero.

System Engineer | .NET Developer | Microsoft MVP | Technical Speaker

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