问题描述

请问各位大神，mfc richedit 怎么强制将粘贴的内容变成不带格式的纯文本格式粘贴？

我的头文件：

 #pragma once// CMyRichEditCtrlclass CMyRichEditCtrl : public CRichEditCtrl{    DECLARE_DYNAMIC(CMyRichEditCtrl)public:    CMyRichEditCtrl();    virtual ~CMyRichEditCtrl();    void SetBKGColor(COLORREF clrNormal COLORREF clrFocus);protected:    BOOL m_bFocus;    COLORREF m_clrFocus;    COLORREF m_clrNormal;    DECLARE_MESSAGE_MAP()    virtual BOOL PreTranslateMessage(MSG* pMsg);public:    afx_msg void OnSize(UINT nType int cx int cy);    afx_msg void OnEnKillfocus();    afx_msg void OnEnSetfocus();    afx_msg BOOL OnMouseWheel(UINT nFlags short zDelta CPoint pt);    afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);    afx_msg void OnEnProtected(NMHDR *pNMHDR LRESULT *pResult);protected:    virtual void PreSubclassWindow();};

我的实现：

 // MyRichEditCtrl.cpp : 实现文件//#include ""stdafx.h""#include ""MyRichEditCtrl.h""// CMyRichEditCtrlIMPLEMENT_DYNAMIC(CMyRichEditCtrl CRichEditCtrl)CMyRichEditCtrl::CMyRichEditCtrl(){    m_bFocus = FALSE;    m_clrFocus = 0x001D170C;    m_clrNormal = 0x001F190E;}CMyRichEditCtrl::~CMyRichEditCtrl(){}BEGIN_MESSAGE_MAP(CMyRichEditCtrl CRichEditCtrl)    ON_CONTROL_REFLECT(EN_KILLFOCUS &CMyRichEditCtrl::OnEnKillfocus)    ON_CONTROL_REFLECT(EN_SETFOCUS &CMyRichEditCtrl::OnEnSetfocus)    ON_WM_MOUSEWHEEL()    ON_WM_CREATE()    ON_NOTIFY_REFLECT(EN_PROTECTED &CMyRichEditCtrl::OnEnProtected)END_MESSAGE_MAP()// CMyRichEditCtrl 消息处理程序void CMyRichEditCtrl::OnEnKillfocus(){    // TODO: 在此添加控件通知处理程序代码    m_bFocus = FALSE;    SetBackgroundColor(FALSE m_clrNormal);    Invalidate();}void CMyRichEditCtrl::OnEnSetfocus(){    // TODO: 在此添加控件通知处理程序代码    m_bFocus = TRUE;    SetBackgroundColor(FALSE m_clrFocus);    Invalidate();}BOOL CMyRichEditCtrl::PreTranslateMessage(MSG* pMsg){    if(WM_KEYDOWN == pMsg->message)       {        if(::GetFocus() == m_hWnd && ((GetKeyState(VK_CONTROL) & 0xFF00 ) == 0xFF00))           {              // 粘贴            if( pMsg->wParam == 'V' || pMsg->wParam == 'v')              {                this->PasteSpecial(CF_TEXT);                return TRUE;            }        }    }     return CRichEditCtrl::PreTranslateMessage(pMsg);}BOOL CMyRichEditCtrl::OnMouseWheel(UINT nFlags short zDelta CPoint pt){    // TODO: 在此添加消息处理程序代码和/或调用默认值    if (nFlags & MK_CONTROL)    {        return TRUE;    }    return CRichEditCtrl::OnMouseWheel(nFlags zDelta pt);}void CMyRichEditCtrl::SetBKGColor(COLORREF clrNormal COLORREF clrFocus){    m_clrNormal = clrNormal;    m_clrFocus  = clrFocus;    if (GetSafeHwnd())    {        SetBackgroundColor(FALSE m_bFocus ? m_clrFocus : m_clrNormal);    }}int CMyRichEditCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct){    if (CRichEditCtrl::OnCreate(lpCreateStruct) == -1)        return -1;    // TODO:  在此添加您专用的创建代码    SetBackgroundColor(FALSE m_clrNormal);    return 0;}void CMyRichEditCtrl::OnEnProtected(NMHDR *pNMHDR LRESULT *pResult){    ENPROTECTED *pEnProtected = reinterpret_cast<ENPROTECTED *>(pNMHDR);    // TODO:  控件将不发送此通知，除非您重写    // CRichEditCtrl::OnInitDialog() 函数，以将 EM_SETEVENTMASK 消息发送    // 到该控件，同时将 ENM_PROTECTED标志“或”运算到 lParam 掩码中。    // TODO:  在此添加控件通知处理程序代码    switch (pEnProtected->msg)    {    case WM_KEYDOWN://按键，判断pEP->wParam        {        }        break;    case WM_PASTE://粘贴        {        }        break;    case WM_CUT://剪切        {        }        break;    case EM_SETCHARFORMAT:        {        }        break;    default:        break;    };    *pResult = TRUE;}void CMyRichEditCtrl::PreSubclassWindow(){    // TODO: 在此添加专用代码和/或调用基类    DWORD eventmask = GetEventMask() | ENM_PROTECTED;    SetEventMask( eventmask );    CRichEditCtrl::PreSubclassWindow();}

我在PreTranslateMessage中截获Ctrl+V，但是好像不太靠谱，还是这种截获的方式不对，结果是我一直按着ctrl+v一直粘贴就会出现把原有格式粘贴上去的情况。在网上看到有帖子说使用EN_PROTECTED 反射消息，但是我怎么都接不到这个消息又是为何？已经浪费了太多时间，还请高手来帮忙解决困扰，不胜感激。

解决方案

GetClipboardData(CF_TEXT);
按理说指定了CF_TEXT就是纯文本了。你把wm_paste消息吃掉，避免RichEdit内置的粘贴起作用。

解决方案二：
不可能啊，用spy++看

解决方案三：
http://bbs.csdn.net/topics/29702

解决方案四：
The EN_PROTECTED message notifies a rich edit control's parent window that the user is taking an action that would change a protected range of text. A rich edit control sends this notification message in the form of a WM_NOTIFY message.

To receive EN_PROTECTED notifications specify ENM_PROTECTED in the mask sent with the EM_SETEVENTMASK message.