wymeterctl.h

西安电子科技大学王亚民教授所著《组态软件设计与开发》附带的源代码06章

#if !defined(AFX_WYMETERCTL_H__15491A73_5B63_11D5_ADD3_001088AB5D33__INCLUDED_)
#define AFX_WYMETERCTL_H__15491A73_5B63_11D5_ADD3_001088AB5D33__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

// wyMeterCtl.h : Declaration of the CwyMeterCtrl ActiveX Control class.

/////////////////////////////////////////////////////////////////////////////
// CwyMeterCtrl : See wyMeterCtl.cpp for implementation.

#ifndef ROUND
#define ROUND(x) (int)((x) + 0.5 - (double)((x) < 0))
#endif
#define BOUNDARY_POINTS 48

class CwyMeterCtrl : public COleControl
{
	DECLARE_DYNCREATE(CwyMeterCtrl)

// Constructor
public:
	CwyMeterCtrl();

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CwyMeterCtrl)
	public:
	virtual void OnDraw(CDC* pdc, const CRect& rcBounds, const CRect& rcInvalid);
	virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
	virtual void DoPropExchange(CPropExchange* pPX);
	virtual void OnResetState();
	virtual void Serialize(CArchive& ar);
	//}}AFX_VIRTUAL

// Implementation
protected:
	void UpdateNeedle(double dValue) ;
	void DrawNeedle(CDC *pDC) ;
	void DrawValue(CDC *pDC) ;
	void DrawMeterBackground(CDC *pDC, const CRect &rect) ;

	int m_nValueFontHeight ;
	int m_nValueFontWidth ;

	COLORREF m_colorHighlight ;
	COLORREF m_colorShadow ;
	CRect m_rectValue ;
	CPoint m_pointBoundary[BOUNDARY_POINTS] ;
	CRgn m_rgnBoundary ;
	int m_nTopRadius ;
	double m_dLeftAngleRad ;
	double m_dRightAngleRad ;
	int m_nBottomCX ;
	int m_nBottomCY ;
	int m_nBottomRadius ;
	COLORREF m_colorWindow ;
	int m_nValueBaseline ;
	int m_nValueCenter ;

	COLORREF m_colorButton ;
	COLORREF m_colorText ;
	CFont m_fontValue ;
	CBitmap *m_pBitmapOldBackground ;
	CBitmap m_bitmapBackground;
	CDC m_dcBackground;
	CRect m_rectCtrl;

	~CwyMeterCtrl();

	DECLARE_OLECREATE_EX(CwyMeterCtrl)    // Class factory and guid
	DECLARE_OLETYPELIB(CwyMeterCtrl)      // GetTypeInfo
	DECLARE_PROPPAGEIDS(CwyMeterCtrl)     // Property page IDs
	DECLARE_OLECTLTYPE(CwyMeterCtrl)		// Type name and misc status

	// Subclassed control support
	BOOL IsSubclassedControl();
	LRESULT OnOcmCommand(WPARAM wParam, LPARAM lParam);

// Message maps
	//{{AFX_MSG(CwyMeterCtrl)
	afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);
	afx_msg void OnDestroy();
	afx_msg void OnTimer(UINT nIDEvent);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

// Dispatch maps
	//{{AFX_DISPATCH(CwyMeterCtrl)
	double m_dMaxValue;			//最大量程
	afx_msg void OnDMaxValueChanged();
	double m_dMinValue;			//最小量程
	afx_msg void OnDMinValueChanged();
	double m_dCurrentValue;		//当前值
	afx_msg void OnDCurrentValueChanged();
	short m_nScaleDecimals;		//标尺精度
	afx_msg void OnNScaleDecimalsChanged();
	short m_nValueDecimals;		//数值精度
	afx_msg void OnNValueDecimalsChanged();
	OLE_COLOR m_colorNeedle;	//指针颜色	
	afx_msg void OnColorNeedleChanged();
	CString m_strUnits;			//计量单位
	afx_msg void OnStrUnitsChanged();
	afx_msg void SetCurrentValue(double val);
	//}}AFX_DISPATCH
	DECLARE_DISPATCH_MAP()

	afx_msg void AboutBox();

// Event maps
	//{{AFX_EVENT(CwyMeterCtrl)
	//}}AFX_EVENT
	DECLARE_EVENT_MAP()

// Dispatch and event IDs
public:
	enum {
	//{{AFX_DISP_ID(CwyMeterCtrl)
	dispidSetCurrentValue = 8L,
	//}}AFX_DISP_ID
	};
};

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

#endif // !defined(AFX_WYMETERCTL_H__15491A73_5B63_11D5_ADD3_001088AB5D33__INCLUDED)