DOCUMENT:Q191205  11-AUG-1998  [vbwin]
TITLE   :BUG: Run-Time Error 458 When Late-Binding Rich TextBox Control
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:5.0,6.0
OPER/SYS:WINDOWS
KEYWORDS:kbCtrl kbVBp600bug kbVBp500bug kbcode kberrmsg

======================================================================
---------------------------------------------------------------------
The information in this article applies to:

 - Microsoft Visual Basic Learning, Professional, and Enterprise Editions
   for Windows, versions 5.0, 6.0
---------------------------------------------------------------------

SYMPTOMS
========

When you access the BackColor property of a Rich TextBox Control that is
late-bound, the following error occurs when you run the program:

   Error 458: Variable uses an Automation type not supported in Visual
   Basic.

RESOLUTION
==========

Instead of late-binding the control, try to early-bind it. For example, you
can replace the following code:

   Dim ctl As Control
   Set ctl = RichTextBox1

with:

   Dim ctl As RichTextBox
   Set ctl = RichTextBox1

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products
listed at the beginning of this article. We are researching this
bug and will post new information here in the Microsoft Knowledge
Base as it becomes available.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a new Standard EXE project in Visual Basic. Form1 is created by
   default.

2. Select Components from the Project menu, browse for the Microsoft Rich
   TextBox Control 6.0, and select it. Add the control to Form1.

3. Paste the following code into the code window of Form1:

      Private Sub Form_Load()
         Dim ctl As Control
         Set ctl = RichTextBox1
         ctl.BackColor = vbRed
         If ctl.BackColor <> vbRed Then
            MsgBox "fail"
         End If
      End Sub

4. Press F5 to run the project.

RESULTS: The following error appears:

      Error 458: Variable uses an Automation type not supported in Visual
      Basic

Additional query words:
======================================================================
Keywords          : kbCtrl kbVBp600bug kbVBp500bug kbcode kberrmsg
Version           : WINDOWS:5.0,6.0
Platform          : WINDOWS
Issue type        : kbbug
Solution Type     : kbpending

=============================================================================

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Copyright Microsoft Corporation 1998.