PRB: Application Error Running or Closing a Project (268807)


The information in this article applies to:

  • Microsoft Visual Basic Professional Edition for Windows 6.0
  • Microsoft Visual Basic Enterprise Edition for Windows 6.0
This article was previously published under Q268807

SYMPTOMS

An Application Error occurs in the development environment in one of the following scenarios:
  • An attempt is made to close an object containing a control that implements the DataFormat property. The attempt to close the container object may be executed by the following actions:
    • Run a project.
    • Manually close the designer window of the object.
    • Start a new project while a project is already open.
    • Exit the Visual Basic application.
    -or-

  • An attempt is made to view an object by using the View menu or the Project Explorer. -or-

  • An attempt is made to delete a control from an object designer.

CAUSE

The Microsoft Standard Data Formatting Object Library, msstdfmt.dll, is incorrectly registered.

RESOLUTION

Correctly register msstdfmt.dll by using RegSvr32.exe, a utility program that ships with Visual Basic and allows you to register DLLs and other files into the system registry.

To correctly register msstdfmt.dll, follow the steps below:
  1. Verify that msstdfmt.dll is located in the Microsoft Windows 95 or Microsoft Windows 98 Windows\System folder or in the Microsoft Windows NT or Microsoft Windows 2000 Windows\System32 folder. If you cannot locate msstdfmt.dll, copy it from the Visual Basic installation media into the appropriate folder.
  2. On the Start menu, choose Run.
  3. Type the following command into the Run dialog box, replacing [Path To Windows\System] with the full path to your Windows\System folder: regsvr32 [Path To Windows\System]\msstdfmt.dll

MORE INFORMATION

The Microsoft Standard Data Formatting Object Library is required for controls that implement a DataFormat property. An Application Error occurs when a control makes an attempt to use the DataFormat property and the Microsoft Standard Data Formatting Object Library is not registered. Controls that implement a DataFormat property include, but are not limited to, the following:

CheckBox, ComboBox, Image, Label, ListBox, PictureBox, TextBox, ImageCombo, MonthView, DTPicker, Calendar, DataCombo, DataList, DBCombo, DBList, MaskEdBox, RichTextBox.

Steps to Reproduce Behavior:

  1. Unregister msstdfmt.dll by using RegSvr32.exe: regsvr32 /u [Path To Windows\System]\msstdfmt.dll
  2. Start Visual Basic and create a new Standard EXE project. Form1 is created by default.
  3. Add a Label control to Form1.
  4. Run the project, and note that an Application Error occurs.
Modification Type:MajorLast Reviewed:1/11/2001
Keywords:kbCmnCtrls kbComboBox kbCtrl kbIDEProject kbListBox kbMonthCalCtrl kbprb kbProperties KB268807
©2002 Microsoft Corporation. All rights reserved.