Detect Shutdown and logoff operations

[PriyaBabu]

Hai,

I've to detect when the system is shutdown or logged off using VB. Could anyone help me out with the code for this. or suggest some APIs used

Thank you,

Regards,
K. Sripriya

[crptcblade]

I suppose you could just have a form open and use the QueryUnload event.

[MartinLiss]

Here's what crptcblade means

Private Sub Form_QueryUnload(Cancel As Integer, UnloadMode As Integer)
 
    Select Case UnloadMode
        Case vbFormControlMenu
            MsgBox "The user chose the Close command (the ""X"") from the Control menu on the form."
        Case vbFormCode
            MsgBox "The Unload statement is invoked from code."
        Case vbAppWindows
            MsgBox "The current Microsoft Windows operating environment session is ending."
        Case vbAppTaskManager
            MsgBox "The Microsoft Windows Task Manager is closing the application."
        Case vbFormMDIForm
            MsgBox "An MDI child form is closing because the MDI form is closing."
        Case vbFormOwner
            MsgBox "A form is closing because its owner is closing."
    End Select
 
End Sub

[BrianS]

Does he mean "system" as a Computer or an Application?

[manavo11]

You can also subclass a form but I don't remember the messages you are supposed to look for...