PRB: ClassWizard Disables Add Function & Add Variable Buttons
ID: Q140252
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The information in this article applies to:
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The ClassWizard, included with:
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Microsoft Visual C++ 32-bit Edition, versions 4.0, 5.0, 6.0
SYMPTOMS
If either the header (.h) or implementation (.cpp) file for a class is a
read-only file, the following buttons will be grayed out in ClassWizard:
- Add Function button on the Message Map tab.
- Add Variable button on Member Variables tab.
- Add Method and Add Property buttons on the OLE Automation tab.
- Add Event button on the OLE Event tab.
In Visual C++, versions 5.0 and 6.0, the OLE Automation tab is named
Automation, and OLE Event is now ActiveX Events. Also, the following
additional buttons will be dimmed:
- Delete Function button on the Message Map tab.
- Delete Variable button on Member Variables tab.
Having a project's .odl file tagged as read-only causes the same behavior,
and having the .clw file tagged as read-only produces this message:
The ClassWizard database <path to the .clw file> is read-only.
ClassWizard cannot continue.
CAUSE
This is by design. ClassWizard checks the attributes of the header and
implementation files for a class when a class is selected from the Class
Name combo box. If either file is read-only, ClassWizard can't add a new
method, function, or variable to the file, so the buttons are disabled.
If the files are checked-in to a source management system such as Microsoft
SourceSafe, they are read-only until they are checked out.
RESOLUTION
A simple workaround is to remove the read-only attribute from those files.
If the files are under source management, checking the file out removes the
read-only attribute as well.
STATUS
This behavior is by design.
Additional query words:
Keywords : kbMFC kbSSafe400 kbVC400 kbVC500 kbVC600 kbGrpDSTools
Version : winnt:
Platform : winnt
Issue type : kbprb