FIX: IDE Crashes When Repeatedly Placing a Control on a Form (171818)

The information in this article applies to:

Microsoft Visual Basic Control Creation Edition for Windows 5.0
Microsoft Visual Basic Learning Edition for Windows 5.0
Microsoft Visual Basic Professional Edition for Windows 5.0
Microsoft Visual Basic Enterprise Edition for Windows 5.0

This article was previously published under Q171818

SYMPTOMS

When you select a control from the Toolbox with the mouse, immediately press the ENTER key to create the control instance on a form, UserDocument, or property page, and then quickly click on the Toolbox again, the following error may occur:

"VB5 has created an invalid page fault in module VB5.EXE at 0137:00568412"

CAUSE

The problem is that the Toolbox registers the two single clicks as a double click. It then assumes that the control to be created has already been selected by the first click. However, when the ENTER key was pressed between the two clicks, the control selection was set back to 0, so the correct control is no longer selected when the second click occurs.

RESOLUTION

Install the Visual Studio 97 Service Pack 2 or allow time for the control to be created before clicking on the Toolbox again.

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

MORE INFORMATION

This behavior occurs whenever you click a control on the Toolbox, hit the ENTER key to create the control, and then click on the Toolbox again within the space and time limit of a double-click.

NOTE: This is easier to reproduce if the 'double-click' time set via the Control Panel is increased (set to slower).

Steps to Reproduce Behavior

Create a new Visual Basic 5.0 Standard EXE project.
Click on a control in the Toolbox, immediately press the ENTER key and then quickly click on the same control in the Toolbox.

An invalid page fault may occur if the second click occurs within the space and time limit of the double-click setting.

Modification Type:	Major	Last Reviewed:	12/10/2003
Keywords:	kbbug kbfix kbvbp500sp2fix kbVS97sp2fix KB171818