如何从2个WTL类中派生一个类 [英] how to derive a class from 2 WTL classes

问题描述

大家好

我有一个按钮类:

Hi all

I have a button class :

class CTransparentBtn : virtual public CWindowImpl<ctransparentbtn, WTL::CButton, CControlWinTraits>
{
// ...
};

并且我从codeproject.com找到了用于菜单按钮的此类

and I''ve found this class for menu button from codeproject.com

namespace WTLEX
{

template <bool class="" tbase="WTL::CButton," twintraits="CControlWinTraits">
class ATL_NO_VTABLE CMenuButtonImpl : public CWindowImpl< T, TBase, TWinTraits>
{
// ...
};

class CMenuButton : public CMenuButtonImpl<false, CMenuButton>
{
// ...
};

} //namespace WTLEX</bool>

那么如何从"CTransparentBtn"派生"CMenuButton"以使用CTransparentBtn的函数呢?

预先感谢您

so How can I derive "CMenuButton" from "CTransparentBtn" to use CTransparentBtn''s functions??

thank u in advance

推荐答案

如果您采用其他方法，您仍然必须对CTransparentBtn进行模板化

you''re still going to have to template your CTransparentBtn if you go the other way

template <class theClass, class theBase>
class CTransparentBtn : public CWindowImpl<theClass, theBase, CControlWinTraits>

然后

then

template <class theClass,class theBase>
class ATL_NO_VTABLE CMenuButtonImpl : public CTransparentBtn <theClass, theBase>

您会走另一条路吗?

wouldn''t you go the other way?

class CTransparentBtn : public CMenuButtonImpl<ctransparentbtn,wtl::cbutton,ccontrolwintraits>
{
// ...
};

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