从VS 6到VS 2010的C ++转换 [英] C++ Conversion from VS 6 to VS 2010

问题描述

我正在将项目从Visual Studio 6转换为Visual Studio 2010，并在VS 2010中进行转换.

I am converting a project from Visual Studio 6 to Visual Studio 2010, and in VS 2010. The following line:

m_string.AddTail((CList *)&t.m_string);

给出编译错误:

gives the compile error:

error C2664: 'POSITION CList<type,arg_type>::AddTail(ARG_TYPE)' : cannot convert parameter 1 from '<clist><type,arg_type> *' to 'ATL::CStringT<BaseType,StringTraits> '
          with
          [
              TYPE=CString,
              ARG_TYPE=CString &
          ]
          and
          [
              TYPE=CTickLabel::=::CString,
              ARG_TYPE=CTickLabel::=::CString
          ]
          and
          [
              BaseType=char,
              StringTraits=StrTraitMFC<char>
          ]

任何帮助都将不胜感激!!!!

斯科特

///////////////////////UPDATE///////////////////////////////////

m_string的定义是:

Any help is greatly appreciated!!!!

Scott

///////////////////////UPDATE///////////////////////////////////

The definition of m_string is:

CList <cstring,> m_string;

"t"是传递给例程的参数，其形式为:"const CTickLabel& t''

与:

''t'' is a parameter passed into the routine as: ''const CTickLabel& t''

with:

class CTickLabel : public CObject
{
    DECLARE_SERIAL(CTickLabel)
public:
    CList <cstring,> m_string;
    int m_angle;            // angle of ticklabel

如果对问题的结构有任何疑问，请发送电子邮件.

谢谢.

Scott

Please e-mail if any questions about the structure of the problem.

Thank you.

Scott

推荐答案

正如Albert所说，似乎编译器为函数选择了错误的重载.但是，如果要附加完全相同类型的对象，我看不到为什么需要在调用中进行强制转换.您应该能够写:

m_string.AddTail(& t.m_string);

因此，回到VC6，进行转换，并在尝试编译时查看其内容.这可能使您(和我们)对发生的事情有了更好的了解.

另一个问题是什么?

顺便说一下，拥有公共数据成员确实是一个废话.如果让任何老汤姆，迪克或哈里摆弄它们的零头，要保持班级的不变性确实很困难. AND m_string也是一个很糟糕的名字-它是一个糟糕的清单！

我刚刚注意到的另一件事...您没有明确告诉编译器ARG_TYPE是什么.也许指定(例如CList< cstring，cstring&>)可能会有所帮助.
干杯，

灰

As Albert said it looks like the compiler''s choosing the wrong overload for the function. However I can''t see why you need the cast in the call if you''re appending an object of exactly the same type. You should be able to write:

m_string.AddTail( &t.m_string );

So go back to VC6, take the cast out and see what it says when you try and compile it. That might give you (and us) a better idea of what''s going on.

Another question, what''s cstring?

Incidentally having public data members is a really crap idea. It''s really hard to keep your class''s invariants intact if you let any old Tom, Dick or Harry fiddle with their bits. AND m_string is a really bad name as well - it''s a sodding list!

Another thing I''ve just noticed... you''re not explicitly telling the compiler what ARG_TYPE is. Perhaps specifying that (i.e. CList<cstring,cstring & >) might help.
Cheers,

Ash

这篇关于从VS 6到VS 2010的C ++转换的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！