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If your VB ActiveX DLL includes a non-modal form, you cannot summon it from a VC++ client if you call the native VB Show method of the form from within the DLL. Instead, use this technique in your exposed interface:

Private Declare Function ShowWindow Lib "User32" Alias "ShowWindow" (ByVal hWnd As Long, _
ByVal nCmdShow As Long) As Long

Private Const SW_SHOW=5

Public Sub Show()

Dim frm As New frmMyForm
Call ShowWindow(frm.hWnd,SW_SHOW)
End Sub


 Show Non-Modal Forms From ActiveX DLLs

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