PRB: ClassWizard Doesn't Support Custom Foreign DDX (116017)
The information in this article applies to:
- The ClassWizard, when used with:
- Microsoft Visual C++ 1.51
- Microsoft Visual C++ 1.52
- Microsoft Visual C++, 32-bit Learning Edition 4.0
- Microsoft Visual C++, 32-bit Professional Edition 2.0
- Microsoft Visual C++, 32-bit Professional Edition 2.1
- Microsoft Visual C++, 32-bit Professional Edition 4.0
This article was previously published under Q116017 SYMPTOMS
ClassWizard does not allow custom DDX functions for foreign variables.
Custom DDX functions can be implemented by the user and then used by
ClassWizard in generating code for member variables. The technique
for this is described in "MFC TechNote 26."
If, however, you have created a custom DDX function that is intended to be
used to exchange data between a control and a foreign member variable (see
"foreign" in the online help), ClassWizard will not recognize that your
function is intended for foreign variables, nor will it let you select your
new property or type (defined in the "ExtraDDX?" line in the APPSTUDIO.INI
file) in conjunction with a foreign variable.
CAUSE
This is a limitation in all versions listed above of Microsoft Visual C++.
RESOLUTION
To work around this, manually add your custom DDX_Field* call to your
CRecordView's DoDataExchange() function.
| Modification Type: | Major | Last Reviewed: | 12/2/2003 |
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| Keywords: | kbDatabase kbprb kbwizard KB116017 |
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