PRB: USER Resource Leak when Improperly Using CFormView

 Last reviewed: July 10, 1997
Article ID: Q118876
1.00 1.50 1.51 1.52 | 1.00 2.00 2.10 4.00 
WINDOWS             | WINDOWS NT
kbprg kbprb

The information in this article applies to:

  • The Microsoft Foundation Classes (MFC), included with: 

        - Microsoft Visual C++ for Windows, versions 1.0, 1.5, 1.51, and
      1.52
    - Microsoft Visual C++ 32-bit Edition, version 1.0, 2.0,2.1, and 4.0

SYMPTOMS

If a menu is specified for the dialog-box template of a CFormView, then a permanent USER resource leak occurs.

CAUSE

A CFormView object uses a dialog-box template with a child style. It is not valid for a child window to have a menu. If a menu is specified for a child window, the menu will be created when the template is created but it will not be attached to the CFormView and it will therefore not be destroyed when the CFormView object is destroyed.

RESOLUTION

Make sure none of the dialog-box templates for your CFormView objects have menus specified for them. To assist in this endeavor, starting with Visual C++, 32-bit Edition, version 4.0, the Dialog Editor will disable the Menu option on the Dialog Properties dialog box if the loaded dialog template has the Child style (WS_CHILD).

MORE INFORMATION

If you are still encountering the resource leak, there are several other articles in the Knowledge Base that discuss possible causes:

ARTICLE-ID: Q71455 TITLE: Tracking Down Lost System Resources

ARTICLE-ID: Q66654 TITLE: Possible Causes for System Resource Reduction

ARTICLE-ID: Q72236 TITLE: Maximizing the Use of Available Memory in Windows

Additional reference words: 1.00 1.50 1.51 1.52 2.00 2.10 2.50 2.51 2.52
3.00 3.10 4.00
KBCategory: kbprg kbprb
KBSubcategory: MfcDocView
Keywords : MfcDocView kbprb kbprg
Technology : kbMfc
Version : 1.00 1.50 1.51 1.52 | 1.00 2.00
Platform : NT WINDOWS

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Last reviewed: July 10, 1997
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