invalid procedure call or argument?

[nareth]

whenever i try to run a second instance of my App i get this error

mycode is:

Let App.Title = App.Title & " V" & App.Major & "." & App.Minor & "." & App.Revision
    Let Caption = App.Title
    
    If App.PrevInstance Then
        Call AppActivate(App.Title)
        Call Unload(Me)
        Exit Sub
    End If

[nareth]

its the appactive function nyone kno whats wrong?

[Frans C]

Maybe it is because there are two programs with the same caption.
Try to change your caption, so there will only be one program with the same caption.

eg

App.Title = App.Title & " V" & App.Major & "." & App.Minor & "." & App.Revision
Caption = App.Title

If App.PrevInstance Then
    Me.Caption = "Closing.."
    Call AppActivate(App.Title)
    Call Unload(Me)
    Exit Sub
End If

[nareth]

i cant get my previous app get focus can any help?

[Frans C]

Are you sure that your previous application has the same windowcaption as the argument you pass to AppActivate?
I noticed that AppActivate produces the 'invalid procedure call or argument' error when no window is found with that caption.
Do you change the window's caption somewhere else in your code?

[nareth]

it dint give the error anymore it just doesnt give focus to my previous app