rowview.h

串口调试助手的源代码

// From MSVC4.2 Sample CHKBOOK
// Modify by JHCC

// rowview.h : interface of the CRowView class

// This class implements the behavior of a scrolling view that presents
// multiple rows of fixed-height data.  A row view is similar to an
// owner-draw listbox in its visual behavior; but unlike listboxes,
// a row view has all of the benefits of a view (as well as scroll view),
// including perhaps most importantly printing and print preview.

class CRowView : public CScrollView
{
	DECLARE_DYNAMIC(CRowView)
public:
	CRowView();

// Attributes
protected:
	int	m_nRowWidth;	// width of row in current device units
	int	m_nRowHeight;	// height of row in current device untis
	int	m_nPrevSelectedRow;	// index of the most recently selected row
	int	m_nPrevRowCount;	// most recent row count, before update
	int	m_nRowsPerPrintedPage;	// how many rows fit on a printed page

// Operations
public:
	virtual void	UpdateRow(int nInvalidRow);	// called by derived class's
												// OnUpdate

// Overridables
protected:
	virtual void	GetRowWidthHeight(CDC*  pDC, int&  nRowWidth,
		int&  nRowHeight) = 0;
	virtual int	GetActiveRow() = 0;
	virtual int	GetRowCount() = 0;
	virtual void	OnDrawRow(CDC*  pDC, int  nRow, int  y, BOOL  bSelected) = 0;
	virtual void	ChangeSelectionNextRow(BOOL  bNext) = 0;
	virtual void	ChangeSelectionToRow(int  nRow) = 0;

// Implementation
protected:
	// standard overrides of MFC classes
	void OnInitialUpdate();
	virtual void OnDraw(CDC* pDC);  // overridden to draw this view
	virtual void OnPrepareDC(CDC* pDC, CPrintInfo* pInfo = NULL);
	virtual BOOL OnPreparePrinting(CPrintInfo* pInfo);
	virtual void OnBeginPrinting(CDC* pDC, CPrintInfo* pInfo);
	virtual void OnPrint(CDC* pDC, CPrintInfo* pInfo);

	virtual void UpdateScrollSizes();
	virtual CRect RowToWndRect(CDC* pDC, int nRow);
	virtual int RowToYPos(int nRow);
	virtual void RectLPtoRowRange(const CRect& rectLP,
			int& nFirstRow, int& nLastRow, BOOL bIncludePartiallyShownRows);
	virtual int LastViewableRow();
	virtual ~CRowView();

// Generated message map functions
protected:
	//{{AFX_MSG(CRowView)
	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg void OnSize(UINT nType, int cx, int cy);
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};