问题： MFC 程序运行一段时间总是报错nRefs>0 ，求大神帮助
描述:
mfcvisual c++
Microsoft Visual C++ Debug Library
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Debug Assertion Failed!
Program: C:\****.exe
File: f:\dd\vctools\vc7libs\ship\atlmfc\include\atlsimpstr.h
Line: 90
Expression: nRefs > 0
For information on how your program can cause an assertion
failure, see the Visual C++ documentation on asserts.
(Press Retry to debug the application)
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