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I receive error "User-defined type not defined" when trying to compile a VB6 programme.The statement "Public fMainForm As frmMain" is highlighted by the compiler. This programme has previously compiled without error.

My code is

Public fMainForm As frmMain
Public commonSQl, commonDSN, commonPealNo, commonDove, _
commonGridRefE, commonGridRefN As String
Public commonDate As Date
Public commonShowUnringable As Boolean
Public IsOpen As Integer



Sub Main()
    Dim fLogin As New frmLogin
    commonDSN = ""
    fLogin.Show vbModal
    Isloaded = -1
    If Not fLogin.OK Then
    'Login Failed so exit app
    End
    End If
    Unload fLogin


    frmSplash.Show
    frmSplash.Refresh
    Set fMainForm = New frmMain
    Load fMainForm
    Unload frmSplash


    fMainForm.Show
End Sub
DZS50
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  • Try to reduce your example to the fMainForm variable only, remove all the rest; make a new test project with just this. And add an Option Explicit at the Top of each file (you declare an IsOpen, but I see an Isloaded being referenced). –  Oct 30 '16 at 16:40
  • Thank you. Still fails with just the fMainForm variable. Changed variable type to source - works ok. Looks like VB is not loading definition for frmMain object? – DZS50 Oct 30 '16 at 19:45
  • and frmMain is? – Rob Oct 31 '16 at 13:39
  • it is the start up object of the project – DZS50 Oct 31 '16 at 14:03
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    what does that mean? Is it a form? Is this VB6 (because New frmMain isn't allowed in VB6) – Rob Oct 31 '16 at 15:17
  • yes it is VB6 . Why is it not allowed? There are several examples of sample vb6 code where it is used – DZS50 Nov 01 '16 at 17:45

1 Answers1

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You probably don't have frmMain form added to your project. Please check that it is available.

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scor4er
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