Microsoft KB Archive/171817

= FIX: UserControl Cannot Read ContainedControls in Visual FoxPro =

Article ID: 171817

Article Last Modified on 12/10/2003

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APPLIES TO


 * Microsoft Visual Basic 5.0 Control Creation Edition
 * Microsoft Visual Basic 5.0 Professional Edition
 * Microsoft Visual Basic 5.0 Enterprise Edition
 * Microsoft Visual FoxPro 5.0 Standard Edition
 * Microsoft Visual FoxPro 5.0a

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This article was previously published under Q171817



SYMPTOMS
When a Visual Basic UserControl tries to read ContainedControls in Visual FoxPro, the following runtime error occurs:

"32768, "Application-defined or Object-defined error""



RESOLUTION
This problem is corrected with Visual Studio 97 Service Pack 2. However, any Visual Basic 5.0 ActiveX Controls built before the installation of the Service Pack will need to be recompiled.



STATUS
Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 2.

For more information on the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:

170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why

For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:

171554 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2



Steps to Reproduce Behavior
 Create a new ActiveX Control project. Name the UserControl "VBContainer" without the quotes. Name the Project "TestVBBuiltContainer" without the quotes. Set the ControlContainer property to True.  Add the following code to VBContainer: Public Property Let Caption(ByVal s As String) 'See if ContainedControls works On Error Resume Next MsgBox "ContainedControls count =" _ & UserControl.ContainedControls.Count If Err.Number <> 0 Then MsgBox "ContainedControls failed." & vbCrLf & _ Err.Number & ": " & Err.Description End If           End Property

Private Sub UserControl_DblClick Caption = "Hi" End Sub  From the File menu, select Make TestVBBuiltContainer.ocx.</li> Start Visual FoxPro.</li> In the Command Window, enter the following command:

Create Form

</li> From the Form Controls Toolbar, select the OLE Container Control.</li> Place the OLE Container Control on the Form.</li> Select Insert Control from the Insert Object dialog.</li> Select TestVBBuiltContainer from the Object Type list, and click OK.</li> In the Properties Window, try to set the Caption for the control. You will receive the error described at the beginning of this article.</li> Run the Form and double-click on the control. You will again receive the error described at the beginning of this article.</li></ol>

Additional query words: vfp

Keywords: kbbug kbfix kbvbp500sp2fix kbvs97sp2fix KB171817

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