带有模板的子类窗口 [英] Subclass window with template

问题描述

大家好，

我已经离开C ++几年了，现在又回来了.我必须使用VS2010处理其他人的旧代码.我想重写OnInitDialog()并将自己的菜单注入系统菜单，然后为WM_SYS_COMMAND添加消息处理程序.问题是我不确定如何连接消息映射.

这是我的代码的简化版本(为简洁起见):

Hello All,

I have been out of the C++ world for several years and have come back. I am having to work on someone else''s old code with VS2010. I would like to override OnInitDialog() and inject my own menu to the system menu and then add a message handler for WM_SYS_COMMAND. The problem is I am not sure how to hook up the message maps.

Here is a simplified (for the sake of brevity)version of my code:

template<class TBase>
class TSubclass : public TBase {
protected:
   virtual BOOL OnInitDialog();
   afx_msg void OnSysCommand(UINT nID, LPARAM lParam);
   DECLARE_MESSAGE_MAP()
};

template<class TBase>
BOOL
TSubclass <TBase>::OnInitDialog() {
   //... Code omitted
   return TBase::OnInitDialog();
}

template<class TBase>
void
TSubclass <TBase>::OnSysCommand(UINT nID, LPARAM lParam) {
   if ((nID & 0xFFF0) == (WM_USER + 100)) {
   //... Code omitted
   }
   else {
      TBase::OnSysCommand(nID, lParam);
   }
}

BEGIN_TEMPLATE_MESSAGE_MAP(class TBase, TSubclass <TBase>, TBase)
   ON_WM_SYSCOMMAND()
END_MESSAGE_MAP()

我已经使用自定义消息映射在VC 6.0/.Net中完成了与此类似的操作，但是这又是几年前的事了，我无法访问该旧代码.我看到了BEGIN_TEMPLATE_MESSAGE_MAP宏，并认为Microsoft现在已经实现了一些东西，但是我只是无法正确获取语法.

鉴于以上所述，有人可以向我指出BEGIN_TEMPLATE_MESSAGE_MAP的问题吗?

感谢您的帮助！

-Craig

I have done something similar to this in VC 6.0/.Net with custom message maps, but again that has been several years ago and I do not have access to that old code. I saw the BEGIN_TEMPLATE_MESSAGE_MAP macro and thought Microsoft had implemented something now, but I just can''t get the syntax correct.

Given the above can someone point out to me the problem with the BEGIN_TEMPLATE_MESSAGE_MAP?

Thanks for all your help!

-Craig

推荐答案

我现在对其进行编译，并成功调用OnInitDialog()和OnSysCommand().

我更改了此内容:

I have it compiling now and have it successfully calling OnInitDialog() and calling OnSysCommand().

I changed this:

BEGIN_TEMPLATE_MESSAGE_MAP(class TBase, TSubclass <tbase>, TBase)
   ON_WM_SYSCOMMAND()
END_MESSAGE_MAP()
</tbase>

对此:

to this:

BEGIN_TEMPLATE_MESSAGE_MAP(TDebugConsole, TBase, TBase)
   ON_WM_SYSCOMMAND()
END_MESSAGE_MAP()

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