[RESOLVED] trying to turn off monitor using sendmessage

[chris128]

I just had a quick go and got this code working in a winform app:

Const SC_MONITORPOWER As Integer = 61808
    Const WM_SYSCOMMAND As Integer = 274
    Const MONITOR_OFF As Integer = 2
 
    Partial Public Class API
        <System.Runtime.InteropServices.DllImportAttribute("user32.dll", EntryPoint:="SendMessage")> _
        Public Shared Function SendMessage(ByVal hWnd As IntPtr, ByVal Msg As UInteger, ByVal wParam As IntPtr, ByVal lParam As IntPtr) As Integer
        End Function
    End Class
 
 
    Private Sub Offbtn_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Offbtn.Click
        API.SendMessage(Me.Handle, WM_SYSCOMMAND, SC_MONITORPOWER, MONITOR_STANDBY)
    End Sub

Turns the monitor off as soon as Offbtn is clicked