rectitem.h

《Visual C++.NET MFC类库应用详解》程序实例

// 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 - main COleClientItem bounded by a rectangle

class CMainDoc;
class CMainView;

class CRectItem : public COleClientItem
{
	DECLARE_SERIAL(CRectItem)
	CRectItem();

public:
	CRectItem(COleDocument* pContainer);
	~CRectItem();

// Attributes
	CPoint m_ptPos;             //position in document
	CSize GetSize();            //current size
	void SetSize(CSize size);
	CSize GetBaseSize();        //base size
	void SetBaseSize(CSize size);
	CRect GetRect()             //current rect
		{ return CRect(m_ptPos, GetSize()); }
	void SetRect(CRect& rect);

	CMainDoc* GetDocument()
		{ return (CMainDoc*)COleClientItem::GetDocument(); }
	CMainView* GetActiveView()
		{ return (CMainView*)COleClientItem::GetActiveView(); }

// Operations
	void Dirty()
		{ GetDocument()->SetModifiedFlag(); }
	void Invalidate(CView* pNotThisView = NULL);
	BOOL UpdateExtent();
	void Move(CRect &rc);
	void ResetSize();
	void GetNativeClipboardData(COleDataSource *pDataSource);

	virtual void Serialize(CArchive& ar); // from CObject - public to call directly

// Overridables
protected:
	virtual void OnChange(OLE_NOTIFICATION wNotification, DWORD dwParam);
	virtual BOOL OnChangeItemPosition(const CRect& rectPos);
	virtual void OnActivate();
	virtual COleDataSource* OnGetClipboardData(BOOL bIncludeLink,
		LPPOINT lpOffset, LPSIZE lpSize);
	virtual void OnDeactivateUI(BOOL bUndoable);

public:
	virtual void OnGetItemPosition(CRect& rPosition);
protected:
	CSize m_sizeIcon;           //current size
	CSize m_sizeContent;        //current size
	CSize m_sizeIconExtent;     //default size
	CSize m_sizeContentExtent;  //default size
};