Binaryworld - Register and unregister type libraries ... [ VB -> COM-COM+ ]

All COM-oriented VB developers know how to register and unregister an ActiveX DLL, using the REGSVR32 utility. However, there is no such an utility to register and unregister a type library.

You can quickly build your own TLB Registration utility with a handful of statements, thanks to the undocumented TLBINF32.DLL library that is silently installed with Visual Basic 5 and 6. Just add a reference to the "TypeLib Information" library in the References dialog, and then invoke one of these two functions:

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' Register a type library

Sub RegisterTypeLib(ByVal TypeLibFile As String)
  Dim TLI As New TLIApplication
  ' raises an error if unable to register
  ' (e.g. file not found or not a TLB)
  TLI.TypeLibInfoFromFile(TypeLibFile).Register
End Sub

' Unregister a type library

Sub UnregisterTypeLib(ByVal TypeLibFile As String)
  Dim TLI As New TLIApplication
  ' raises an error if unable to unregister
  TLI.TypeLibInfoFromFile(TypeLibFile).UnRegister
End Sub