BUG: Error Message "Object Does Not Support This Property ..." in Locals and Watch Window in Visual Basic 6.0

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Article ID: 258207 - View products that this article applies to.
This article was previously published under Q258207
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SYMPTOMS

A multiuse class in an ActiveX DLL implements a public non-creatable class that has two properties. The class is instantiated in a Standard EXE, and values are assigned to the properties of the object just created. When the value of the form level object variable is examined in the locals window or a watch is set on it, Visual Basic 6.0 displays the following error message:
<Object does not support this property or method>
In Visual Basic 5.0, the values assigned to the properties are visible.

STATUS

Microsoft has confirmed that this is a bug in the Microsoft products that are listed at the beginning of this article.

MORE INFORMATION

Steps to Reproduce Behavior

  1. Start a new Visual Basic Standard EXE project. Form1 is created by default.
  2. On the File menu, choose Add Project to add a new Visual Basic ActiveX DLL project, creating a Project Group. Class1 is created by default.
  3. Set the Instancing property of Class1 to 2-PublicNotCreatable.
  4. Add the following code to the General Declarations section of Class1:
    Option Explicit
    
    Public Property Get X() As Long
    
    End Property
    
    Public Property Let X(ByVal X As Long)
    
    End Property
    
    Public Property Get Y() As Long
    
    End Property
    
    Public Property Let Y(ByVal Y As Long)
    
    End Property
    					
  5. On the Project menu, choose Add Class Module to add another class module to the project. Class2 is created by default. The Instancing property of Class2 is set to the default: 5-MultiUse.
  6. Add the following code to the General Declarations section of Class2:
    Implements Class1
    Private m_X As Long
    Private m_Y As Long
    
    Private Property Get Class1_X() As Long
       Class1_X = m_X
    End Property
    
    Private Property Let Class1_X(ByVal X As Long)
       m_X = X
    End Property
    
    Private Property Get Class1_Y() As Long
      Class1_Y = m_Y
    End Property
    
    Private Property Let Class1_Y(ByVal Y As Long)
       m_Y = Y
    End Property
    					
  7. Return to Project1 and add a CommandButton control to Form1.
  8. On the Project menu, choose References to open the References dialog box. Check the reference to Project2 and click OK.
  9. Add the following code to the General Declarations section of Form1:
    Option Explicit
    
    Private Sub Command1_Click()
       Dim point As Class1
       
       Set point = New Class2
       
       point.X = 10
       point.y = 20
       Debug.Print point.X, point.y
    End Sub
    					
  10. Set a break point on the Debug.Print statement, run the project, and click Command1.
  11. If the Locals window is not displayed, open the View menu and select the Locals window.
  12. In the Locals window, click the plus sign (+) next to "point" to expand the tree view. Note that the following error message appears in the column where the values of x and y should be:
    <Object does not support this property or method>
    In Visual Basic 5.0, the values of x and y are set to 10 and 20, respectively.

Properties

Article ID: 258207 - Last Review: February 28, 2014 - Revision: 2.0
APPLIES TO
  • Microsoft Visual Basic 6.0 Learning Edition
  • Microsoft Visual Basic 6.0 Professional Edition
  • Microsoft Visual Basic 6.0 Enterprise Edition
Keywords: 
kbnosurvey kbarchive kbbug kbdebug kbpending KB258207

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