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Sun, 21 Jan 2007 07:04:00 GMT

深入��出MFC文档/视图架构之相互关�p?/h1>

2006-03-21 14:20 作者：宋宝�?出处�Q?天极开�?责�Q�~�辑�Q?a title=向本�~�辑提问 target=_blank>方舟

　　2. 消息��动机制

　　在基�?文档/视图"架构的MFC�E�序中，用户消息�Q�鼠标、键盘输入等�Q�会先发往视图�Q�如果视图未处理则会发往框架�H�口。所以，一般来��_��消息映射宜定义在视图中。另外，如果一个应用同时拥有多个视图而当前活动视图没有对消息�q�行处理则消息也会发往框架�H�口�?br>
　　下面我们来看实例�Q�我们利用Visual C++向导创徏一个单文档/视图架构的MFC�E�序�Q�在其中增加一个菜单项�?自定�?�Q�ID为IDM_SELF�Q�如�?.4�Q��?br>

�?.4 �?自定�?菜单的单文档/视图架构MFC�E�序

　　我们分别在视囄��和框架窗口类中�ؓ"自定�?菜单��d��消息映射�Q�代码如下：

//视图中的消息映射和处理函�?br>BEGIN_MESSAGE_MAP(CExampleView, CView)
　//{{AFX_MSG_MAP(CExampleView)
　　ON_COMMAND(IDM_SELF, OnSelf)
　//}}AFX_MSG_MAP
END_MESSAGE_MAP()
void CExampleView::OnSelf()
{
　// TODO: Add your command handler code here
　AfxMessageBox("消息在视图中处理");
}

//框架�H�口中的消息映射和处理函�?br>BEGIN_MESSAGE_MAP(CMainFrame, CFrameWnd)
　//{{AFX_MSG_MAP(CMainFrame)
　　ON_COMMAND(IDM_SELF, OnSelf)
　//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CMainFrame::OnSelf()
{
　// TODO: Add your command handler code here
　AfxMessageBox("消息在框架窗口中处理");
}

　　�q�时候，我们单击"自定�?菜单�Q�弹出对话框昄��"消息在视图中处理"�Q�如果我们删除框架窗口中的消息映��，再单�?自定�?菜单�Q�弹出对话框也显�C?消息在视图中处理"�Q�但是，若我们将视图中的消息映射删除了，��׃��昄��"消息在框架窗口中处理"�Q�这验证了我们关于消息处理顺序论�q�的正确性�?br>
　　�Ʋ深入理解消息流动过�E�，�q�需认真分析CFrameWnd::OnCmdMsg、CView::OnCmdMsg函数的源代码�Q?br>

BOOL CFrameWnd::OnCmdMsg(UINT nID, int nCode, void* pExtra,
AFX_CMDHANDLERINFO* pHandlerInfo)
{
　// pump through current view FIRST
　CView* pView = GetActiveView();
　if (pView != NULL && pView->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
　　return TRUE;

　// then pump through frame
　if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
　　return TRUE;

　// last but not least, pump through app
　CWinApp* pApp = AfxGetApp();
　if (pApp != NULL && pApp->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
　　return TRUE;

　return FALSE;
}

BOOL CView::OnCmdMsg(UINT nID, int nCode, void* pExtra, AFX_CMDHANDLERINFO* pHandlerInfo)
{
　// first pump through pane
　if (CWnd::OnCmdMsg(nID, nCode, pExtra, pHandlerInfo))
　　return TRUE;

　// then pump through document
　BOOL bHandled = FALSE;
　if (m_pDocument != NULL)
　{
　　// special state for saving view before routing to document
　　_AFX_THREAD_STATE* pThreadState = AfxGetThreadState();
　　CView* pOldRoutingView = pThreadState->m_pRoutingView;
　　pThreadState->m_pRoutingView = this;
　　bHandled = m_pDocument->OnCmdMsg(nID, nCode, pExtra, pHandlerInfo);
　　pThreadState->m_pRoutingView = pOldRoutingView;
　}

　return bHandled;
}

　　分析上述源代码可知，WM_COMMAND消息的实际流动顺序比前文叙述�?先视图，后框架窗�?要复杂得多，文档和应用程序都参与了消息的处理�q�程。如果我们再为文档和应用��d��消息映射和处理函敎ͼ�

//文档的消息映��和处理函数
BEGIN_MESSAGE_MAP(CExampleDoc, CDocument)
　//{{AFX_MSG_MAP(CExampleDoc)
　　ON_COMMAND(IDM_SELF, OnSelf)
　//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CExampleDoc::OnSelf()
{
　// TODO: Add your command handler code here
　AfxMessageBox("消息在文档中处理");
}

//应用的消息映��和处理函数
BEGIN_MESSAGE_MAP(CExampleApp, CWinApp)
//{{AFX_MSG_MAP(CExampleApp)
ON_COMMAND(IDM_SELF, OnSelf)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

void CExampleApp::OnSelf()
{
　// TODO: Add your command handler code here
　AfxMessageBox("消息在应用中处理");
}

　　屏蔽掉视囑֒�框架�H�口的消息映��，再单�?自定�?菜单�Q�弹出对话框昄��"消息在文档中处理"�Q�再屏蔽掉文档中的消息映��，弹出对话框显�C?消息在应用中处理"�Q�由此可见，完整的WM_COMMAND消息的处理顺序是"视图――文档――框架窗口――应�?�Q?br>
　　实际上，关于MFC的消息流动是一个很复杂的议题，陷于��幅的原因，我们不可能对其进行更详尽的介�l�，读者可自行��L��相关资料�?

�?��c�?9 7 1 2

爱饭�?/a> 2007-01-21 15:04 发表评论

VC中自动改变控件位�|�和大小的对话框�c�（转）

Sun, 21 Jan 2007 06:25:00 GMT

我用VC写的一个可以自动改变控件位�|�和大小的对话框�c�R��从�q�个�cȝ��承的对话框类�Q�只要在OnInitDialog()里写几行��单的代码�Q�对话框上的控�g��׃��随着对话框大��的改变而改变自��q��位置和大��?/p>

在用VC开发应用程序时�Q�经�怼�要做一些可以改变大��的对话框，而这个时候就要求对话框上的控件会随着对话框大��的改变而改变自��q��位置和大��。如果控件比较少�Q�那可以在对话框的OnSize()事�g里面��d��代码�Q�通过计算来调整各个控件的位置和大��；但是�Q�如果对话框上的控�g比较多的话，那这��是一仉��常痛苦的事情�Q�要是程序中又有很多可以改变大小的对话框�Q�那一个一个的OnSize()写下来，那会使程序员崩溃的！
��Z��解决�q�个问题�Q�我写了一个自动改变控件位�|�和大小的对话框�c�ClxDialog。从�q�个�cȝ��承的对话框类�Q�只要在OnInitDialog()里对控�g做一些简单的讄��Q�对话框上的控�g��׃��随着对话框大��的改变而改变自��q��位置和大��?br> ��Z��保存控�g信息�Q�我定义了一个结构：

typedef struct _dlgControlTag
{
int iId; // 控�gID
int iFlag; // 标志�Q�表�C�怎样改变控�g的位�|�或者大��?br> int iPercent; // 改变值占对话框改变值的癑ֈ��?br>} DLGCTLINFO, *PDLGCTLINFO;

�q�里要对�l�构中的iFlag和iPercent�q�行一些解释。其中iFlag是下面的枚�D��|��

enum
{
    MOVEX = 0, // 控�g在X方向�Q�左叻I��U�d��
    MOVEY, // 控�g在Y方向�Q�上下）�U�d��
    MOVEXY, // 控�g在X方向和Y方向同时�U�d��
    ELASTICX, // 控�g在X方向�Q�宽度）改变大小
    ELASTICY, // 控�g在Y方向改（高度�Q�改变大��?/font>
    ELASTICXY // 控�g在X方向和Y方向同时改变大小
};

iPercent表示改变值占对话框改变值的癑ֈ�比。例如，一个控件的iPercent��gؓ100�Q�iFlag��gؓMOVEX�Q�那么当对话框的宽度改变100个单位的时候，�q�个控�g��在X方向�U�d��100个单位；又如�Q�一个控件的iPercent��gؓ100�Q�iFlag��gؓELASTICXY�Q�那么当对话框的宽度和高度分别改�?00个单位的时候，控�g的高度和宽度也相应的改变100个单位�?br> 下面是设�|�控件信息的函数�Q?/p>

BOOL SetControlProperty(PDLGCTLINFO lp, int nElements);

使用��h��非常��单，在对话框的OnInitDialog()函数里面��d��c�M��下面的代码就行了�Q?/p>

// 控�g信息数组
static DLGCTLINFO dcMenuGroup[] =
{
    {IDOK, MOVEX, 100},
    {IDCANCEL, MOVEX, 100},
    {IDC_BUTTON1, MOVEX, 50},
    {IDC_BUTTON1, MOVEY, 100},
    {IDC_EDIT1, ELASTICX, 100},
    {IDC_EDIT2, ELASTICX, 50},
    {IDC_EDIT3, ELASTICX, 50},
    {IDC_EDIT3, MOVEX, 50},
    {IDC_EDIT4, ELASTICY, 100},
    {IDC_EDIT5, ELASTICX, 100},
    {IDC_EDIT5, ELASTICY, 50},
    {IDC_EDIT6, ELASTICX, 100},
    {IDC_EDIT6, ELASTICY, 50},
    {IDC_EDIT6, MOVEY, 50},
};

// 讄��控�g信息
SetControlProperty(dcMenuGroup, sizeof(dcMenuGroup)/sizeof(DLGCTLINFO));

下面��是使用上面�q�段代码的对话框改变大小前后的效果图�Q?/p>

对两张截囄��比较我们可以很容易的理解上面那段代码�?br> 我还提供了一个函敎ͼ�

void ShowSizeIcon(BOOL bShow = TRUE);

来设�|�是否显�C�对话框右下角表�C�可以改变大��的图标。这个图标是从系�l�中��d��的，我上面的截图是Windows2000下的�Q�在WindowsXP中就会自动变成XP风格的�?br> 好了�Q�闲话不多说了，下面贴出该对话框�c�ClxDialog的源代码�Q�里面有详细的注释：
lxDialog.h文�g�Q?/p>

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//      自动改变控�g位置和大��的对话框类
//      文�g名：lxDialog.h
//      作者：StarLee( coolstarlee@sohu.com )
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

class ClxDialog : public CDialog
{
public:
ClxDialog(UINT nID, CWnd* pParent = NULL);

    typedef struct _dlgControlTag
    {
        int iId;
        int iFlag;
        int iPercent;
    } DLGCTLINFO, *PDLGCTLINFO;

    enum
    {
        MOVEX = 0,
        MOVEY,
        MOVEXY,
        ELASTICX,
        ELASTICY,
        ELASTICXY
    };

// 讄��控�g信息
BOOL SetControlProperty(PDLGCTLINFO lp, int nElements);

// 是否在对话框右下角显�C��C�可改变大小的图�?br> void ShowSizeIcon(BOOL bShow = TRUE);

protected:
    virtual BOOL OnInitDialog();
    afx_msg void OnSize(UINT nType, int cx, int cy);
    afx_msg void OnSizing(UINT nSide, LPRECT lpRect);
    DECLARE_MESSAGE_MAP()

private:
    int m_iClientWidth; // 对话框client区域的宽�?br>    int m_iClientHeight; // 对话框client区域的高�?br>    int m_iMinWidth; // 对话框的最��宽�?br>    int m_iMinHeight; // 对话框的最��高�?br>    PDLGCTLINFO m_pControlArray; // 控�g信息数组指针
    int m_iControlNumber; // 讄��控�g信息的控件个�?br>    BOOL m_bShowSizeIcon; // 是否昄��表示可改变大��的图标
    CStatic m_wndSizeIcon; // 攑֛�标的静态控�?br>    // 保存图标的bitmap
    CBitmap m_bmpSizeIcon;
    BITMAP m_bitmap;
};

lxDialog.cpp文�g:

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//      自动改变控�g位置和大��的对话框类
//      文�g名：lxDialog.cpp
//      作者：StarLee( coolstarlee@sohu.com )
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "lxDialog.h"

// 表示可改变大��的图标ID
#ifndef OBM_SIZE
#define OBM_SIZE 32766
#endif

ClxDialog::ClxDialog(UINT nID, CWnd* pParent /*=NULL*/)
    : CDialog(nID, pParent)
    , m_iClientWidth(0)
    , m_iClientHeight(0)
    , m_iMinWidth(0)
    , m_iMinHeight(0)
    , m_pControlArray(NULL)
    , m_iControlNumber(0)
    , m_bShowSizeIcon(TRUE)
{}

BEGIN_MESSAGE_MAP(ClxDialog, CDialog)
ON_WM_SIZE()
ON_WM_SIZING()
END_MESSAGE_MAP()

BOOL ClxDialog::OnInitDialog()
{
CDialog::OnInitDialog();

// 讄��对话框�ؓ可变大小�?br> ModifyStyle(0, WS_SIZEBOX);

    // 以对话框的初始大��作为对话框的宽度和高度的最��?br>    CRect rectDlg;
    GetWindowRect(rectDlg);
    m_iMinWidth = rectDlg.Width();
    m_iMinHeight = rectDlg.Height();

    // 得到对话框client区域的大��?/font>
    CRect rectClient;
    GetClientRect(rectClient);
    m_iClientWidth = rectClient.Width();
    m_iClientHeight = rectClient.Height();

    // Load图标
    m_bmpSizeIcon.LoadOEMBitmap(OBM_SIZE);
    m_bmpSizeIcon.GetBitmap(&m_bitmap);

    // 创徏昄��图标的静态控件�ƈ攑֜�对话框右下角
    m_wndSizeIcon.Create(NULL, WS_CHILD | WS_VISIBLE | SS_BITMAP, CRect(0, 0, m_bitmap.bmWidth, m_bitmap.bmHeight), this, 0);
    m_wndSizeIcon.SetBitmap(m_bmpSizeIcon);
    m_wndSizeIcon.MoveWindow(m_iClientWidth - m_bitmap.bmWidth, m_iClientHeight - m_bitmap.bmHeight, m_bitmap.bmWidth, m_bitmap.bmHeight);

// 昄��图标
m_wndSizeIcon.ShowWindow(m_bShowSizeIcon);

return TRUE;
}

void ClxDialog::OnSize(UINT nType, int cx, int cy)
{
    CDialog::OnSize(nType, cx, cy);

    // 对话框宽度和高度的增�?nbsp;
    int iIncrementX = cx - m_iClientWidth;
    int iIncrementY = cy - m_iClientHeight;

    // 最��化时增量�ؓ0
    if (nType == SIZE_MINIMIZED)
    {
        iIncrementX = iIncrementY = 0;
    }

    for (int i = 0; i < m_iControlNumber; i++)
    {
        CWnd *pWndCtrl = NULL;

        int iId = m_pControlArray[i].iId;
        int iFlag = m_pControlArray[i].iFlag;
        int iPercent = m_pControlArray[i].iPercent;

// 无效�?br> if ((iPercent < 0) || (iPercent > 100))
continue;

        // 得到控�g指针
        pWndCtrl = GetDlgItem(iId);
        if ((NULL != pWndCtrl) && IsWindow(pWndCtrl->GetSafeHwnd()))
        {
            CRect rectCtrl;
            pWndCtrl->GetWindowRect(rectCtrl);

ScreenToClient(rectCtrl);

            int iLeft = rectCtrl.left;
            int iTop = rectCtrl.top;
            int iWidth = rectCtrl.Width();
            int iHeight = rectCtrl.Height();

            switch (iFlag)
            {
            case MOVEX: // X方向�U�d��
                iLeft += (iIncrementX * iPercent / 100);
                break;

            case MOVEY: // Y方向�U�d��
                iTop += (iIncrementY * iPercent / 100);
                break;

            case MOVEXY: // X方向和Y方向同时�U�d��
                iLeft += (iIncrementX * iPercent / 100);
                iTop += (iIncrementY * iPercent / 100);
                break;

            case ELASTICX: // X方向改变大小
                iWidth += (iIncrementX * iPercent / 100);
                break;

            case ELASTICY: // Y方向改变大小
                iHeight += (iIncrementY * iPercent / 100);
                break;

            case ELASTICXY: // X方向和Y方向同时改变大小
                iWidth += (iIncrementX * iPercent / 100);
                iHeight += (iIncrementY * iPercent / 100);
                break;

            default:
                ;
            }

            // 把控件移动到��C��|?br>            pWndCtrl->MoveWindow(iLeft, iTop, iWidth, iHeight);
            }
    }

    // 把图标移动到对话框右下角
    if (IsWindow(m_wndSizeIcon.GetSafeHwnd()))
        m_wndSizeIcon.MoveWindow(cx - m_bitmap.bmWidth, cy - m_bitmap.bmHeight, m_bitmap.bmWidth, m_bitmap.bmHeight);

    // 记录对话框client区域的大��?br>    if (nType != SIZE_MINIMIZED)
    {
        m_iClientWidth = cx;
        m_iClientHeight = cy;
    }
}

void ClxDialog::OnSizing(UINT nSide, LPRECT lpRect)
{
CDialog::OnSizing(nSide, lpRect);

// 对话框不能小于初始大��?/font>

int iWidth = lpRect->right - lpRect->left;
int iHeight = lpRect->bottom - lpRect->top;

    if (iWidth <= m_iMinWidth)
        lpRect->right = lpRect->left + m_iMinWidth;

    if(iHeight <= m_iMinHeight)
        lpRect->bottom = lpRect->top + m_iMinHeight;
}

BOOL ClxDialog::SetControlProperty(PDLGCTLINFO lp, int nElements)
{
// 讄��控�g数组信息

if (NULL == lp)
return FALSE;

if (nElements <= 0)
return FALSE;

m_pControlArray = lp;
m_iControlNumber = nElements;

return TRUE;
}

void ClxDialog::ShowSizeIcon(BOOL bShow /*=NULL*/)
{
m_bShowSizeIcon = bShow;
}

爱饭�?/a> 2007-01-21 14:25 发表评论

CRichEditCtrl

Sat, 13 Jan 2007 09:15:00 GMT

数CRichEditCtrl的先天不��_��q�化�Ҏ��

不能够自动初始化
不能够接受TAB�?
不能够通过属性设�|�自动换�?
不能昄��囄��{�其他OLE对象
不能够��用Ctrl+C来实现拷�?

不能够自动初始化

当我�W�一�ơ将Rich Edit控�g攑֜�资源�H�体上的时候，发现�E�序�Ҏ��׃��能运行。后来才扑ֈ�原因�Q�原来Rich Edit 控�g是Ole�c�d��的控件。在加蝲Rich Edit 控�g的时候，必须�q�行初始化。代码如下：
BOOLCTestApp::InitInstance(){

.....
AfxInitRichEdit();

}

不能够接受TAB�?/strong>

��?RichEdit控�g攑ֈ�资源�H�体上的时候，发现它的属性页中�ƈ没有讄��接受TAB键的讄��Q�导致当把焦�Ҏ��到Rich Edit 控�g上的时候，一按tab键，焦点��q��动到下一个控件上面去了�?br>具体解决�Ҏ��是重蝲Rich Edit控�g的OnGetDlgCode�Q?br>例子代码�Q?br>.h文�g�Q?br>class CMyRichEdit : public CRichEditCtrl{

          ........
          afx_msg UINT OnGetDlgCode( );
          ........

}
.cpp文�g�Q?br>BEGIN_MESSAGE_MAP(CMyRichEdit, CRichEditCtrl)
          ON_WM_GETDLGCODE( )
END_MESSAGE_MAP()

UINT COleRichEditCtrl::OnGetDlgCode( ){

          return DLGC_WANTTAB;

}

不能够通过属性设�|�自动换�?/strong>

当把Rich Edit控�g攑ֈ�资源�H�体上的时候，发现在它的属性窗体中�q�没有设�|�Rich Edit控�g自动换行的属性设�|�。要辑ֈ��q�一目的�Q�例子代码如下：
BOOL CTestDlg::InitDialog(){

          .............
          //m_RichEdit为窗体类的成员变�?br>          this->m_RichEdit.SetTargetDevice(NULL,0);
          ............

}

不能昄��囄��{�其他OLE对象

MFC提供的CRichEditCtrl没有提供直接昄��囄��{�OLE对象的属性或�Ҏ��讄��Q�但是提供了一个接�?strong>SetOLECallback( IRichEditOleCallback* pCallback );
要让CRichEditCtrl昄��囄��Q�就得在IRichEditOleCallback上下功夫�?br>IRichEditOleCallback是windows中的接口�Q�它的定义如下：
ContextSensitiveHelp:
    通过该方法通知应用�E�序它将以上下文兌��方式调度帮助�?/font>
DeleteObject:
    通过该方法发出通知�Q�一个对象即��从RichEdit控�g中删�?br>GetClipboardData:
    通过该方�?/font>允许RichEdit的客��L��Q�调用程序）提供自己的粘贴对�?br>GetContextMenu:
    通过该方法向应用�E�序提出通过鼠标右键事�g来获取上下文菜单的请�?br>GetDragDropEffect:
    通过该方法允许RichEdit的客��L��Q�调用程序）讄��拖动操作的效�?br>GetInPlaceContext:
    通过该方法提供了应用�E�序�U�和文档�U�接口，以及必要的支持In-place�Ȁ�zȝ��信息
GetNewStrorage:
    通过该方法存储从�_�脓板或��文本流(RTF)中读取的新对�?br>QueryAcceptData:
    通过该方法决定在�_�脓操作或拖放操作中引入的数据是否可以被接受�?br>QueryInsertObject:
    通过该方法向应用�E�序询问某个对象是否可以被插�?br>ShowContainerUI:
    通过该方法告知应用程序是否显�C��q��操作界面

大致了解了IRichEditOleCallback接口后，��应该清楚，要显�C�图片等ole对象�Q�至��应该实现GetNewStorage�Ҏ��Q�因��Ҏ��是存储ole对象的接口方法�?br>
以下是接口声明的代码�Q?br>interface IExRichEditOleCallback : IRichEditOleCallback
{

public:
  IExRichEditOleCallback();
  virtual ~IExRichEditOleCallback();
  int m_iNumStorages;
  IStorage* pStorage;
  DWORD m_dwRef;

  virtual HRESULT STDMETHODCALLTYPE GetNewStorage(LPSTORAGE* lplpstg);
  virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void ** ppvObject);
  virtual ULONG STDMETHODCALLTYPE AddRef();
  virtual ULONG STDMETHODCALLTYPE Release();
  virtual HRESULT STDMETHODCALLTYPE GetInPlaceContext(LPOLEINPLACEFRAME FAR *lplpFrame,
   LPOLEINPLACEUIWINDOW FAR *lplpDoc, LPOLEINPLACEFRAMEINFO lpFrameInfo);
  virtual HRESULT STDMETHODCALLTYPE ShowContainerUI(BOOL fShow);
  virtual HRESULT STDMETHODCALLTYPE QueryInsertObject(LPCLSID lpclsid, LPSTORAGE lpstg, LONG cp);
  virtual HRESULT STDMETHODCALLTYPE DeleteObject(LPOLEOBJECT lpoleobj);
  virtual HRESULT STDMETHODCALLTYPE QueryAcceptData(LPDATAOBJECT lpdataobj, CLIPFORMAT FAR *lpcfFormat,   DWORD reco, BOOL fReally, HGLOBAL hMetaPict);
  virtual HRESULT STDMETHODCALLTYPE ContextSensitiveHelp(BOOL fEnterMode);
  virtual HRESULT STDMETHODCALLTYPE GetClipboardData(CHARRANGE FAR *lpchrg, DWORD reco, LPDATAOBJECT FAR *lplpdataobj);
   virtual HRESULT STDMETHODCALLTYPE GetDragDropEffect(BOOL fDrag, DWORD grfKeyState, LPDWORD pdwEffect);
  virtual HRESULT STDMETHODCALLTYPE GetContextMenu(WORD seltyp, LPOLEOBJECT lpoleobj, CHARRANGE FAR *lpchrg,   HMENU FAR *lphmenu);

}
关于接口的实玎ͼ��被附在最后的附录中�?/p>

不能够��用Ctrl+C来实现拷�?/strong>

实际上，CRichEditCtrl本��n是支持Ctrl+C实现拯��功能的，但是当我在CRichiEditCtrl的��承类中��用了IRichiEditCallback接口后，它就不在支持Ctrl+C实现拯��功能了。我想问题就出在IRichEditCallback接口上�?br>仔细看了一遍它的帮助文档，我发现问题就出在GetClipboardData上，我没有在它的实现�Ҏ��中写代码�Q�只是返回了S_OK�Q�如果要处理Ctrl+C�Q�就必须�q�回E_NOTIMPL�?br>
以上是我�q�几天的开发经历，与大家分享，�q�希望�\�q�的高手多多指教�?br>在以下关于RichEdit的代码例子中�Q�我参考了Mike O'Neill 的代码，再次谢谢他的贡献�?br>

附录
.h文�g

#if !defined(AFX_OLERICHEDITCTRL_H__3DFF15EE_7336_4297_9620_7F00B611DAA1__INCLUDED_)
#define AFX_OLERICHEDITCTRL_H__3DFF15EE_7336_4297_9620_7F00B611DAA1__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// OleRichEditCtrl.h : header file
//

�Q�i nclude < richole.h >

/////////////////////////////////////////////////////////////////////////// //
// COleRichEditCtrl window

class COleRichEditCtrl : public CRichEditCtrl
{
// Construction
public :
COleRichEditCtrl();
virtual ~ COleRichEditCtrl();

long StreamInFromResource( int iRes, LPCTSTR sType);

protected :

static DWORD CALLBACK readFunction(DWORD dwCookie,
   LPBYTE lpBuf,    // the buffer to fill
   LONG nCount,    // number of bytes to read
   LONG * nRead);    // number of bytes actually read

interface IExRichEditOleCallback; // forward declaration (see below in this header file)

IExRichEditOleCallback * m_pIRichEditOleCallback;
BOOL m_bCallbackSet;

interface IExRichEditOleCallback : public IRichEditOleCallback
{
public :
  IExRichEditOleCallback();
   virtual ~ IExRichEditOleCallback();
   int m_iNumStorages;
  IStorage * pStorage;
  DWORD m_dwRef;

   virtual HRESULT STDMETHODCALLTYPE GetNewStorage(LPSTORAGE * lplpstg);
   virtual HRESULT STDMETHODCALLTYPE QueryInterface(REFIID iid, void ** ppvObject);
   virtual ULONG STDMETHODCALLTYPE AddRef();
   virtual ULONG STDMETHODCALLTYPE Release();
   virtual HRESULT STDMETHODCALLTYPE GetInPlaceContext(LPOLEINPLACEFRAME FAR * lplpFrame,
   LPOLEINPLACEUIWINDOW FAR * lplpDoc, LPOLEINPLACEFRAMEINFO lpFrameInfo);
    virtual HRESULT STDMETHODCALLTYPE ShowContainerUI(BOOL fShow);
    virtual HRESULT STDMETHODCALLTYPE QueryInsertObject(LPCLSID lpclsid, LPSTORAGE lpstg, LONG cp);
    virtual HRESULT STDMETHODCALLTYPE DeleteObject(LPOLEOBJECT lpoleobj);
    virtual HRESULT STDMETHODCALLTYPE QueryAcceptData(LPDATAOBJECT lpdataobj, CLIPFORMAT FAR * lpcfFormat,
   DWORD reco, BOOL fReally, HGLOBAL hMetaPict);
    virtual HRESULT STDMETHODCALLTYPE ContextSensitiveHelp(BOOL fEnterMode);
    virtual HRESULT STDMETHODCALLTYPE GetClipboardData(CHARRANGE FAR * lpchrg, DWORD reco, LPDATAOBJECT FAR * lplpdataobj);
    virtual HRESULT STDMETHODCALLTYPE GetDragDropEffect(BOOL fDrag, DWORD grfKeyState, LPDWORD pdwEffect);
    virtual HRESULT STDMETHODCALLTYPE GetContextMenu(WORD seltyp, LPOLEOBJECT lpoleobj, CHARRANGE FAR * lpchrg,
   HMENU FAR * lphmenu);
};

public :

// Overrides
// ClassWizard generated virtual function overrides
// {{AFX_VIRTUAL(COleRichEditCtrl)
protected :
virtual void PreSubclassWindow();
// }}AFX_VIRTUAL

// Implementation
public :

// Generated message map functions
protected :
// {{AFX_MSG(COleRichEditCtrl)
afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

// }}AFX_MSG
afx_msg UINT OnGetDlgCode( );
DECLARE_MESSAGE_MAP()
};

/////////////////////////////////////////////////////////////////////////// //

// {{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_OLERICHEDITCTRL_H__3DFF15EE_7336_4297_9620_7F00B611DAA1__INCLUDED_)

.cpp文�g

// OleRichEditCtrl.cpp : implementation file
//

�Q�i nclude " stdafx.h "
�Q�i nclude " OleRichEditCtrl.h "

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////// //
// COleRichEditCtrl

COleRichEditCtrl::COleRichEditCtrl()
{
m_bCallbackSet = FALSE;
}

COleRichEditCtrl:: ~ COleRichEditCtrl()
{
// IExRichEditOleCallback class is a reference-counted class
// which deletes itself and for which delete should not be called

// delete m_pIRichEditOleCallback;
}

BEGIN_MESSAGE_MAP(COleRichEditCtrl, CRichEditCtrl)
// {{AFX_MSG_MAP(COleRichEditCtrl)
ON_WM_CREATE()
// }}AFX_MSG_MAP
ON_WM_GETDLGCODE( )
END_MESSAGE_MAP()
//

int COleRichEditCtrl::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
   if (CRichEditCtrl::OnCreate(lpCreateStruct) == - 1 )
    return - 1 ;

// m_pIRichEditOleCallback should have been created in PreSubclassWindow

  ASSERT( m_pIRichEditOleCallback != NULL );

// set the IExRichEditOleCallback pointer if it wasn't set
// successfully in PreSubclassWindow

if ( ! m_bCallbackSet )
{
  SetOLECallback( m_pIRichEditOleCallback );
}

   return 0 ;
}

void COleRichEditCtrl::PreSubclassWindow()
{
// base class first
CRichEditCtrl::PreSubclassWindow();

m_pIRichEditOleCallback = NULL;
m_pIRichEditOleCallback = new IExRichEditOleCallback;
ASSERT( m_pIRichEditOleCallback != NULL );

m_bCallbackSet = SetOLECallback( m_pIRichEditOleCallback );
}

long COleRichEditCtrl::StreamInFromResource( int iRes, LPCTSTR sType)
{
HINSTANCE hInst = AfxGetInstanceHandle();
HRSRC hRsrc = ::FindResource(hInst,
  MAKEINTRESOURCE(iRes), sType);

DWORD len = SizeofResource(hInst, hRsrc);
BYTE * lpRsrc = (BYTE * )LoadResource(hInst, hRsrc);
ASSERT(lpRsrc);

CMemFile mfile;
mfile.Attach(lpRsrc, len);

EDITSTREAM es;
es.pfnCallback = readFunction;
es.dwError = 0 ;
es.dwCookie = (DWORD) & mfile;

return StreamIn( SF_RTF, es );
}

/* static */
DWORD CALLBACK COleRichEditCtrl::readFunction(DWORD dwCookie,
   LPBYTE lpBuf,    // the buffer to fill
   LONG nCount,    // number of bytes to read
   LONG * nRead)    // number of bytes actually read
{
CFile * fp = (CFile * )dwCookie;
* nRead = fp -> Read(lpBuf,nCount);
return 0 ;
}

/////////////////////////////////////////////////////////////////////////// //

COleRichEditCtrl::IExRichEditOleCallback::IExRichEditOleCallback()
{
pStorage = NULL;
m_iNumStorages = 0 ;
m_dwRef = 0 ;

// set up OLE storage

HRESULT hResult = ::StgCreateDocfile(NULL,
  STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE /* | STGM_DELETEONRELEASE */ | STGM_CREATE ,
   0 , & pStorage );

if ( pStorage == NULL ||
  hResult != S_OK )
{
  AfxThrowOleException( hResult );
}
}

COleRichEditCtrl::IExRichEditOleCallback:: ~ IExRichEditOleCallback()
{
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::GetNewStorage(LPSTORAGE * lplpstg)
{
m_iNumStorages ++ ;
WCHAR tName[ 50 ];
swprintf(tName, L " REOLEStorage%d " , m_iNumStorages);

HRESULT hResult = pStorage -> CreateStorage(tName,
  STGM_TRANSACTED | STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_CREATE ,
   0 , 0 , lplpstg );

if (hResult != S_OK )
{
  ::AfxThrowOleException( hResult );
}

return hResult;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::QueryInterface(REFIID iid, void ** ppvObject)
{

HRESULT hr = S_OK;
* ppvObject = NULL;

if ( iid == IID_IUnknown ||
  iid == IID_IRichEditOleCallback )
{
   * ppvObject = this ;
  AddRef();
  hr = NOERROR;
}
else
{
  hr = E_NOINTERFACE;
}

return hr;
}

ULONG STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::AddRef()
{
return ++ m_dwRef;
}

ULONG STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::Release()
{
if ( -- m_dwRef == 0 )
{
  delete this ;
   return 0 ;
}

return m_dwRef;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::GetInPlaceContext(LPOLEINPLACEFRAME FAR * lplpFrame,
LPOLEINPLACEUIWINDOW FAR * lplpDoc, LPOLEINPLACEFRAMEINFO lpFrameInfo)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::ShowContainerUI(BOOL fShow)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::QueryInsertObject(LPCLSID lpclsid, LPSTORAGE lpstg, LONG cp)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::DeleteObject(LPOLEOBJECT lpoleobj)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::QueryAcceptData(LPDATAOBJECT lpdataobj, CLIPFORMAT FAR * lpcfFormat,
DWORD reco, BOOL fReally, HGLOBAL hMetaPict)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::ContextSensitiveHelp(BOOL fEnterMode)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::GetClipboardData(CHARRANGE FAR * lpchrg, DWORD reco, LPDATAOBJECT FAR * lplpdataobj)
{
return E_NOTIMPL;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::GetDragDropEffect(BOOL fDrag, DWORD grfKeyState, LPDWORD pdwEffect)
{
return S_OK;
}

HRESULT STDMETHODCALLTYPE
COleRichEditCtrl::IExRichEditOleCallback::GetContextMenu(WORD seltyp, LPOLEOBJECT lpoleobj, CHARRANGE FAR * lpchrg,
HMENU FAR * lphmenu)
{
return S_OK;
}

// TabRichEditCtrl 消息处理�E�序
UINT COleRichEditCtrl::OnGetDlgCode( ){

return DLGC_WANTTAB;
}

爱饭�?/a> 2007-01-13 17:15 发表评论

Sat, 13 Jan 2007 08:52:00 GMT

�Q?�Q��用AppWizard创徏一个新的MFC AppWizard(EXE)工程�Q�命名�ؓ"office"
�Q?�Q�选择单文档视�?SDI)�l�构�Q�在�W?步中需要选中Container,以提供容器支�?�q�且选中active document container 其它都�ؓ默认

�Q?�Q�在View菜单中，选ClassWizard,选Automation选项�?选Add Class,选择From a TypeLibrary, 在Office目录中选中Microsoft Word 97/2000 �c�d��库Word8.olb或Word9.olb�Q�选中application,document,_document。单击ok

(4)�l�COfficeCntrItem��d��一�Ҏ��。GetIDispatch()

其源码如下：

  ASSERT_VALID(this);
ASSERT(m_lpObject != NULL);
LPUNKNOWN lpUnk = m_lpObject;
Run();
LPOLELINK lpOleLink = NULL;
if (m_lpObject->QueryInterface(IID_IOleLink, (LPVOID FAR*)&lpOleLink) == NOERROR)
{
  ASSERT(lpOleLink != NULL);
  lpUnk = NULL;
  if (lpOleLink->GetBoundSource(&lpUnk) != NOERROR)
  {
   TRACE0("Warning: Link is not connected!\n");
   lpOleLink->Release();
   return NULL;
  }
  ASSERT(lpUnk != NULL);
}
LPDISPATCH lpDispatch = NULL;
if (lpUnk->QueryInterface(IID_IDispatch, (LPVOID FAR*)&lpDispatch)!=NOERROR)
{
    TRACE0("Warning: does not support IDispatch!\n");
  return NULL;

}
ASSERT(lpDispatch != NULL);
return lpDispatch;
�Q?�Q�。在officeView.h��d��#include "msword8.h"

�Q?�Q�。修改void COfficeView::OnInsertObject()�Q�源码如下：

BeginWaitCursor();

COfficeCntrItem* pItem = NULL;
TRY
{
  // Create new item connected to this document.
  COfficeDoc* pDoc = GetDocument();
  ASSERT_VALID(pDoc);
  pItem = new COfficeCntrItem(pDoc);
  ASSERT_VALID(pItem);

  // Initialize the item from the dialog data.
/* if (!dlg.CreateItem(pItem))
   AfxThrowMemoryException(); // any exception will do
  ASSERT_VALID(pItem);*/
   CLSID clsid; //
  if(FAILED(::CLSIDFromProgID(L"Word.document",&clsid)))
   AfxThrowMemoryException();

  if(!pItem->CreateNewItem(clsid))
  /*if(!pItem->CreateFromFile (filename,clsid)) */
   AfxThrowMemoryException();
  ASSERT_VALID(pItem);

  pItem->Activate (OLEIVERB_SHOW,this);

  ASSERT_VALID(pItem);
        m_pSelection = pItem;   // set selection to last inserted item
  pDoc->UpdateAllViews(NULL);
  // As an arbitrary user interface design, this sets the selection
  // to the last item inserted.

// TODO: reimplement selection as appropriate for your application

  m_pSelection = pItem;   // set selection to last inserted item
  pDoc->UpdateAllViews(NULL);
}
CATCH(CException, e)
{
  if (pItem != NULL)
  {
   ASSERT_VALID(pItem);
   pItem->Delete();
  }
  AfxMessageBox(IDP_FAILED_TO_CREATE);
}
END_CATCH

EndWaitCursor();

�Q?�Q�重载ID—FILE—SAVE�Q?/p>

void COfficeView::OnFileSave()
{
// TODO: Add your command handler code here
  TRY{
     LPDISPATCH lpDisp;

  lpDisp = m_pSelection->GetIDispatch();

    Documents docs;

  _Application app;

  _Document mydoc;
  Documents my;

  mydoc.AttachDispatch (lpDisp,TRUE);
  app=mydoc.GetApplication ();
    /*   app.Run ("Macro3");*/
     mydoc.Activate ();
  BOOL password=mydoc.GetHasPassword ();
  mydoc.SetPassword ("love");
  password=mydoc.GetHasPassword ();
  COleVariant vFalse((short)FALSE);
  mydoc.SaveAs (COleVariant("c:\\love.doc"),vFalse,vFalse, COleVariant(""),vFalse,
   COleVariant(""),vFalse,vFalse,vFalse,vFalse,vFalse);

}
CATCH(CException, e)
{
        }
END_CATCH
}

bulid,click insert object,and edit ,and save.maybe run macro.

爱饭�?/a> 2007-01-13 16:52 发表评论

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深入���出MFC文档/视图架构之相互关�p?/h1>

VC中自动改变控件位�|�和大小的对话框�c�（转）

CRichEditCtrl

深入��出MFC文档/视图架构之相互关�p?/h1>