Subj : C++ MFC UpdateData() causes debug assertion failure
To   : All
From : Nightfox
Date : Mon Jul 11 2011 04:47 pm

I'm working on a C++ application for Windows written with MFC that someone
else originally developed.  It's a dialog-based application, and there are
many places in the code where it calls UpdateData() to synchronize the values
of member variables and controls on the GUI.  When I compile and run the
program in debug mode, these calls to UpdateData() cause a debug assertion
failure, which cause the program to stop running.  Does anyone know what might
cause this and how it might be fixed?

Nightfox

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