mainview.h

《Visual C++.NET MFC类库应用详解》程序实例

// mainview.h : interface of the CMainView class
//
// This is a part of the Microsoft Foundation Classes C++ library.
// Copyright (c) Microsoft Corporation.  All rights reserved.
//
// This source code is only intended as a supplement to the
// Microsoft Foundation Classes Reference and related
// electronic documentation provided with the library.
// See these sources for detailed information regarding the
// Microsoft Foundation Classes product.


class CRectItem;

class CMainView : public CScrollView
{
protected: // create from serialization only
	CMainView();
	DECLARE_DYNCREATE(CMainView)

// Attributes
public:
	CMainDoc* GetDocument()
	{
		ASSERT(m_pDocument->IsKindOf(RUNTIME_CLASS(CMainDoc)));
		return (CMainDoc*) m_pDocument;
	}

	CRectItem* GetSelection() const
		{ return m_pSelection; } // Just the top-most window
	// set bSafeSelect to TRUE when there is a chance that an inplace
	// active item could be deactivated before finishing
	void SetSelection(CRectItem* pNewSel, BOOL bSafeSelect = FALSE);

// Operations
public:
	CRectItem* DoPasteItem(BOOL bLink, COleDataObject* pDataObject,
		CPoint* pPoint, CLIPFORMAT cfFormat = 0);
	void ClientToDoc(CRect &rc);
	void DocToClient(CRect &rc);
	void ClientToDoc(CPoint &pt);
	void DocToClient(CPoint &pt);
	void ClientToDoc(CSize &sz);
	void DocToClient(CSize &sz);
	void UpdateActiveItem();


// Implementation
protected:
	BOOL m_bInDrag;
	CRectItem* m_pSelection;
	COleDropTarget m_dropTarget;
	CPoint m_dragPoint;
	CSize m_dragSize;
	CSize m_dragOffset;
	DROPEFFECT m_prevDropEffect;
	static CLIPFORMAT m_cfObjectDescriptor;
	static CBrush NEAR m_brHatch;

	CRectItem* GetHitItem(CPoint point);
	BOOL GetObjectInfo(COleDataObject* pDataObject,
		CSize* pSize, CSize* pOffset);
	void DoPasteNative(COleDataObject* pDataObject, CPoint* pPoint,
		CRectItem* pItem);
	void DoPasteStandard(BOOL bLink, COleDataObject* pDataObject,
		CPoint* pPoint, CRectItem* pItem, CLIPFORMAT cfFormat = 0);

public:
	virtual ~CMainView();
	virtual void OnPrepareDC(CDC* pDC, CPrintInfo* pInfo = NULL);
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual void OnInitialUpdate();
	virtual void OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint);
#ifdef _DEBUG
	virtual void AssertValid() const;
	virtual void Dump(CDumpContext& dc) const;
#endif

	// special scroll handling
	virtual BOOL OnScrollBy(CSize sizeScroll, BOOL bDoScroll = TRUE);

	// drag drop implementation
	virtual BOOL OnDrop(COleDataObject* pDataObject,
		DROPEFFECT dropEffect, CPoint point);
	virtual DROPEFFECT OnDragEnter(COleDataObject* pDataObject,
		DWORD grfKeyState, CPoint point);
	virtual DROPEFFECT OnDragOver(COleDataObject* pDataObject,
		DWORD grfKeyState, CPoint point);
	virtual void OnDragLeave();

	// Printing support
protected:
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);

	// OLE Client support
	virtual BOOL IsSelected(const CObject* pDocItem) const;
	BOOL DoCopySelection();
	void SetupTracker(CRectTracker* pTracker, CRectItem* pItem,
		CRect* pTrueRect = NULL);
	void InvalidateItem(CRectItem* pItem);

// Generated message map functions
protected:
	//{{AFX_MSG(CMainView)
	afx_msg void OnPaste();
	afx_msg void OnPasteLink();
	afx_msg void OnInsertObject();
	afx_msg void OnUpdateEditMenu(CCmdUI* pCmdUI);
	afx_msg void OnEditClear();
	afx_msg void OnEditCopy();
	afx_msg void OnEditCut();
	afx_msg void OnLButtonDblClk(UINT nFlags, CPoint point);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg BOOL OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
	afx_msg void OnRButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnSetFocus(CWnd* pOldWnd);
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnObjectDisplayContent();
	afx_msg void OnUpdateObjectDisplayContent(CCmdUI* pCmdUI);
	afx_msg void OnObjectDisplayAsIcon();
	afx_msg void OnUpdateObjectDisplayAsIcon(CCmdUI* pCmdUI);
	afx_msg void OnPasteSpecial();
	afx_msg void OnUpdateEditClone(CCmdUI* pCmdUI);
	afx_msg void OnEditClone();
	afx_msg void OnUpdateEditPaste(CCmdUI* pCmdUI);
	afx_msg void OnObjectResetsize();
	afx_msg void OnCancelInplace();
	afx_msg void OnDestroy();
	afx_msg void OnUpdateOleEditProperties(CCmdUI* pCmdUI);
	afx_msg void OnOleEditProperties();
	afx_msg void OnUpdateOleChangeSource(CCmdUI* pCmdUI);
	afx_msg void OnOleChangeSource();
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
public:
	afx_msg void OnViewShowoledialog();
	afx_msg void OnViewOledialog();
};