Hi,

I am a newbie of MFC programming. I practice an example of the book, and I typed same code of the book that the author wrote.
It's ok when I compile and build, but run it for file operation will occur error.

error message as follow:
-------------------------------------
Debug Assertion Failed!
program:c:\Documents and Settings\554\桌面\MFC\Painter\Debug\Painter.exe
File: docmgr.cpp
Line: 577 -------------------------------------

docmgr.cpp isn't mine, I think MFC provide it.
I tried set breakpoint in the Line 577 in docmgr.cpp, and debug.
VERIFY(title.LoadString(nIDSTitle)); // => Line 577

CString::LoadString() error cause VERIFY's error.
I trace the code to find someone call the function there.In the debug mode,
callback window order as follow

CDocManagerPromptFileName(CString & {""}, unsigned int 61440, unsigned long 4100, int 1, CDoctemplate * 0x00000000 {CDoctemplate}) line 577
CDocManager::OnFileOpen() line 836 + 31 bytes
CWinApp::OnFileOpen() line 37
So, it's problem of nIDSTitle. Trace again,

if (!DoPromptFileName(newName, AFX_IDS_OPENFILE,
OFN_HIDEREADONLY | OFN_FILEMUSTEXIST, true, null))
return; // open cancelled

Anyone can help me to solve this problem.

Thanks.....

title.LoadString(nIDSTitle) failed trying to load a resource. The bug is not likely to be in the MFC lib, but somewhere in your code. MFC is loaded with tons of ASSERT's and VERIFY's and when one of them triggers it's most likely due to an error by the programmer that it wants to alert you of.

Whatever function is being called, is it supplied with a valid resource ID? (Presumably a string ID) or just giving a random integer as input?

Look at the callstack and find where in your code the function triggering the assert is called. Alternatively you could step through your program until it asserts.

Why?
I traced the bug about serialize(file operation), but don't obtain at all.
So I change the project settings from visual c++6, change MFC setting from "Use MFC in a static library" to "Use MFC in a shared DLL".
Then compile and build it, it can work without any problem happen!

It's funny, I don't know how to explain it.

Anyone can teach me what happened?

Thanks.....