DOCUMENT:Q178469  23-DEC-1997  [vbwin]
TITLE   :PRB: Focus on the Tab Control Changes to an Inactive Tab
PRODUCT :Microsoft Visual Basic for Windows
PROD/VER:WINDOWS:5.0
OPER/SYS:WINDOWS
KEYWORDS:vb5all

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

 - Microsoft Visual Basic Learning, Professional, and Enterprise Editions
   for Windows, version 5.0
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SYMPTOMS
========

With the Microsoft Tabbed Dialog (tabctl32.ocx), focus may shift to a
control on an inactive tab.

CAUSE
=====

This problem may occur with the tabbed dialog when one of the tabs has a
container control, such as a frame or picture control.

RESOLUTION
==========

To work around this problem, disable the controls on inactive tabs so that
they will not be in the tab order. You can disable the controls in the
Click event of the tab control. For example:

   Private Sub SSTab1_Click(PreviousTab As Integer)
      Dim c As Control
      For Each c In Controls
         If (c.Container Is SSTab1) Then
            c.Enabled = (c.Left >= 0)
         End If
      Next
   End Sub

NOTE: When a control contained in an SSTab control is on an inactive tab,
the Left property of the control is negative.

STATUS
======

Microsoft is researching this problem and will post new information here in
the Microsoft Knowledge Base as it becomes available.

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

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

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

2. Add a reference to the Microsoft Tabbed Dialog Control 5.0 by completing
   the following steps:

   a. From the Project menu, click Components.

   b. From the Controls list, check Microsoft Tabbed Dialog Control 5.0.

   c. Click OK to close the Components dialog box.

3. Add a Tab control to Form1 and set the Tabs property of the Tab control
   to 2.

4. On the first tab of the Tab control, add a text box. On the second Tab,
   add a frame control. In the frame control, add a text box.

5. Copy the following code to the Code window of the Form1 form:

      Option Explicit
      Private Sub Text1_GotFocus()
         Debug.Print "Text1 GotFocus"
      End Sub

      Private Sub Text2_GotFocus()
         Debug.Print "Text2 GotFocus"
      End Sub

6. On the Run menu, click Start or press the F5 key to start the program.
   Set the focus to the text box of the first tab. Press the TAB key to
   change the focus. Examine the messages in the Immediate pane. Note that
   the focus moves to the text box in the second tab, which is not
   displayed and therefore inactive.

Additional query words: tabctl32.ocx tab dialog tabstrip tab strip sstab
sheridan
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Keywords          : vb5all
Version           : WINDOWS:5.0
Platform          : WINDOWS
Issue type        : kbprb

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

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Copyright Microsoft Corporation 1997.