VS2003转换到VS2005的一些问题

1以前可以这样用try catch

catch(CException *e) {
pApp->Warn("%s",e->GetErrorMessage);
e->Delete();
return FALSE;
}

现在必须修改为：

catch(CException *e) {
TCHAR errormsg[255];
e->GetErrorMessage (errormsg,255,NULL);
pApp->Warn("%s",errormsg);
e->Delete();
return FALSE;
}

2 strchr必须强制转换一下。

以前可以 char *str2=strchr(line,'|');

2005必须 char *str2=(char *)strchr(line,'|');

1. lifescope of int i in for(int i; i< size; ++i)

in VC6, the codes below are ok
for(int i = 0; i< 10; ++i)
{
//...
}
for(i = 20; i< 40;++i)
{
//...
}

but in VS2005, we should write like below:
for(int i = 0; i< 10; ++i)
{
//...
}
for(int i = 20; i< 40;++i)
{
//...
}
in fact, from vs.net, the compiler accord with C++ standard more than VC6.
If you are porting a VC6 project to VS2005, you will encounter many many codes like this.

2. ON_WM_NCHITTEST (and other MFC macros) won't compile in VS2005
VS2005中，ON_WM_NCHITTEST宏编译不过

When I add a message handler of ON_WM_NCHITTEST to a CControlbar-derived class, it compiles error:
error C2440: 'static_cast' : cannot convert from 'UINT (__thiscall CMenuBar::* )(CPoint)' to 'LRESULT (__thiscall CWnd::* )(CPoint)' Cast from base to derived requires dynamic_cast or static_cast

To fix this bug, we should change the prototype of OnNcHitTest
from
afx_msg UINT OnNcHitTest(CPoint point);
to
afx_msg LRESULT OnNcHitTest(CPoint point);

3. VS2005中有些可能引起内存越界的函数不建议使用了
In VS2005, some dangerous functions are deprecated

char c[10];
strcpy(c, "testtestts"); //ok with VC6, but not in VS2005
strcpy_s(c, _countof(c),"testtestt");//9 chars, ok in VS2005
strcpy_s(c, _countof(c),"testtestt");//10 chars, assert!!!!! in VS2005

http://hi.baidu.com/yu_xiyan/blog/item/50d58b4e9ff310c1d0c86abc.html