Calling Win32 API Functions in VB 2010 - Listing 5

Public Class Hibernate

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) _
        Handles Button1.Click
        If (Win32API.IsPwrHibernateAllowed() <> 0) Then
            Win32API.SetSuspendState(1, 0, 0)
        Else
            MessageBox.Show("Hibernation is not available.")
        End If
    End Sub

    Partial Public Class Win32API

        Public Declare Function IsPwrHibernateAllowed Lib "Powrprof.dll" _
            Alias "IsPwrHibernateAllowed" () As Integer

        Public Declare Function SetSuspendState Lib "Powrprof.dll" _
            Alias "SetSuspendState" (ByVal Hibernate As Integer,
                                     ByVal ForceCritical As Integer,
                                     ByVal DisableWakeEvent As Integer) As Integer

    End Class


End Class

About the Author

Joe Kunk is a Microsoft MVP in Visual Basic, three-time president of the Greater Lansing User Group for .NET, and developer for Dart Container Corporation of Mason, Michigan. He's been developing software for over 30 years and has worked in the education, government, financial and manufacturing industries. Kunk's co-authored the book "Professional DevExpress ASP.NET Controls" (Wrox Programmer to Programmer, 2009). He can be reached via email at joekunk@ajboggs.com.