ID Number: Q80826
1.00
WINDOWS
buglist1.00
Summary:
When two or more MDI child windows are placed on a form and a message
box is brought up either by choosing a menu item or by clicking with
the mouse on the parent form, the focus will sometimes return to the
wrong MDI child window. If the MDIChild1 window has the focus, and you
click on the form to bring up a message box or another modal form, the
focus may return to the MDIChild2 window after canceling the message
box.
This behavior cannot be consistently reproduced.
This problem occurs with the MDI Child custom control supplied with
Microsoft Professional Toolkit for Microsoft Visual Basic programming
system version 1.0 for Windows. We are researching this problem and
will post new information here as it becomes available.
More Information:
The following pseudocode example will possibly demonstrate the problem
of an MDI child window losing the focus after a message box has been
brought up.
1. In the Visual Basic 1.0 programming environment, choose Add File
from the File menu, and select the MDICHILD.VBX custom control.
2. Select the MDI Child control from the Toolbox.
3. Click and drag on the form to place an MDI child window control.
Repeat this step to place another MDI child window on Form1.
4. Double-click on the form outside the MDI child windows to bring up
a Code window.
5. Add the following code to the Form_Click event procedure:
Sub Form_Click ()
MSGBOX "Foo"
End Sub
6. From the Run menu, choose Start to run the application.
7. Click on the MDIChild1 window to give it the focus.
8. Click on the form directly to bring up the message box.
9. Choose the OK button to dismiss the message box.
Note that MDIChild2 has the focus. The focus should have returned to the
MDIChild1 window but does not do so consistently. The same problem can
occur when a modal dialog box or form is brought up from a menu item.
Additional reference words: 1.00 MDIChild