Q192629: FIX: ClassView Cannot Add Member Functions To Template Classes

Article: Q192629
Product(s): Microsoft C Compiler
Version(s): 5.0,6.0
Operating System(s): 
Keyword(s): kbClassView kbide kbVC500 kbVC500bug kbVC600 kbVC600bug kbGrpDSTools kbNoUpdate
Last Modified: 10-FEB-2002

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The information in this article applies to:

- Microsoft Visual C++, 32-bit Enterprise Edition, versions 5.0, 6.0 
- Microsoft Visual C++, 32-bit Professional Edition, versions 5.0, 6.0 
- Microsoft Visual C++, 32-bit Learning Edition, version 6.0 
-------------------------------------------------------------------------------

SYMPTOMS
========

The following error occurs when trying to add member functions to template
classes using ClassView:

  Unable to create the implementation of this function

RESOLUTION
==========

To add member functions to a template class, you must manually enter the
functions into the source files.

STATUS
======

Microsoft has confirmed this to be a bug in the Microsoft products listed at the
beginning of this article.

This problem was corrected in Microsoft Visual C++ .NET.

MORE INFORMATION
================

Steps to Reproduce Behavior
---------------------------

1. Create a default MFC AppWizard (exe).

2. Add a generic class to the project:

  a. Select the project in ClassView.

  b. Right-click the mouse and select New Class.

  c. Select Generic from the Class Type combo box.

  d. Give the class a name, such as CMyGenericClass, and click OK.

3. Edit this generic class declaration, constructor definition, and destructor
  definition by adding the template keyword along with the type list, for
  example:

        //generic class declaration:

        template <class c> class CMyGenericClass {
        public:
           CMyGenericClass();
           virtual ~CMyGenericClass();
        };

        //constructor and destructor definitions:

        template <class c> CMyGenericClass<c>::CMyGenericClass()
        {
        }

        template <class c> CMyGenericClass<c>::~CMyGenericClass()
        {
        }

4. In ClassView, right-click CMyGenericClass and select "Add Member Function."

5. Enter the function name and return type. Click OK. A dialog box is displayed
  indicating the following error:

  Unable to create the implementation of this function

In Visual C++ 6.0, you do not have the ability to jump to a template function
declaration from ClassView unless the template function is defined inside the
class declaration (inline).

For additional information, please see the following article in the Microsoft
Knowledge Base:

  Q154112 ClassView Cannot Find Template Member Function Definition

Additional query words: kbDSupport

======================================================================
Keywords          : kbClassView kbide kbVC500 kbVC500bug kbVC600 kbVC600bug kbGrpDSTools kbNoUpdate 
Technology        : kbVCsearch kbAudDeveloper kbVC500 kbVC600 kbVC32bitSearch kbVC500Search
Version           : :5.0,6.0
Issue type        : kbbug
Solution Type     : kbfix

=============================================================================

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