Form... QueryUnload, UnLoadMode .NET equiv? [RESOLVED]

[McBain2]

I have a program in which in most cases I want it stay open - thus it intercepts the close command and minimizes instead.

In VB6 the QueryUnload events UnLoadMode would allow me to distinguish between an application shutdown and Windows being shutdown.

I am using the Closing event in VB.NET as QueryUnload no longer exists to intercept app close commands but this no longer has a UnLoadMode so how to I work out it it’s Task Manger, Windows and so on closing and not my application?

Currently my program will not allow Windows to shutdown!!!

Any help appreciated, Thanks.

[Edneeis]

http://www.gotdotnet.com/community/m...1&Page=1#40651

[McBain2]

Thanks, just what I was looking for!

[McBain2]

In fact, finally came up with a better, simpler and more effective solution...

Adding the code...

Private Shared WM_QUERYENDSESSION As Integer = &H11
    Private Shared systemShutdown As Boolean = False
    Protected Overrides Sub WndProc(ByRef m As System.Windows.Forms.Message)
        If m.Msg = WM_QUERYENDSESSION Then
            'MsgBox("queryendsession: this is a logoff, shutdown, or reboot")
            systemShutdown = True
        End If
        ' If this is WM_QUERYENDSESSION, the closing event should be fired in the base WndProc
        MyBase.WndProc(m)
    End Sub 'WndProc

...to the form that handles the intercept of the closedown - cancelling and minimizing to a system tray icon instead.

Then you can use the systemShutdown boolean to determine if you should really shutdown in the Closing event, e.g.

Private Sub Form1_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        If Not systemShutdown Then 'cancel shutdown unless system is shutting down...
            e.Cancel = True
        End If
    End Sub

Works a treat!