buttonst.h

本程序是一个最近邻分类算法的演示程序

#if !defined(AFX_BUTTONST_H__6D9F72AC_50E0_49F9_8AC2_CC2ED604D2A8__INCLUDED_)
#define AFX_BUTTONST_H__6D9F72AC_50E0_49F9_8AC2_CC2ED604D2A8__INCLUDED_

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

/////////////////////////////////////////////////////////////////////////////
// CButtonST window

class CButtonST : public CButton
{
// Construction
public:
	CButtonST();

// Attributes
public:

// Operations
public:
    BOOL MOUSEFLAG;
    BOOL m_MouseOnButton;
	BOOL m_bShowText;
	HCURSOR m_hCursor;
    BOOL m_bTracking;
    BOOL bIsFocused;
    BOOL FLAG;
	BOOL flagv;
	BOOL flagT;
    TCHAR strText1[MAX_PATH + 1];
// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CButtonST)
	public:
	virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	virtual BOOL PreTranslateMessage(MSG* pMsg);
	protected:
	virtual void PreSubclassWindow();
	//}}AFX_VIRTUAL

// Implementation
public:
	
	BOOL down;
	BOOL flagb;
	BOOL Sflag;
	void AddToolTip ( CString strTip );
    virtual ~CButtonST();
    
	// Generated message map functions
    protected:
		CToolTipCtrl m_ctrlToolTip;
        CString m_strToolTip;

	//{{AFX_MSG(CButtonST)
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
    afx_msg LRESULT OnMouseLeave(WPARAM wParam, LPARAM lParam);
	afx_msg LRESULT OnMouseHover(WPARAM wParam, LPARAM lParam);
	//}}AFX_MSG

	DECLARE_MESSAGE_MAP()
};
class CMemDC : public CDC
{
public:

    // constructor sets up the memory DC
    CMemDC(CDC* pDC) : CDC()
    {
        ASSERT(pDC != NULL);

        m_pDC = pDC;
        m_pOldBitmap = NULL;
        m_bMemDC = !pDC->IsPrinting();
              
        if (m_bMemDC)    // Create a Memory DC
        {
            pDC->GetClipBox(&m_rect);
            CreateCompatibleDC(pDC);
            m_bitmap.CreateCompatibleBitmap(pDC, m_rect.Width(), m_rect.Height());
            m_pOldBitmap = SelectObject(&m_bitmap);
            SetWindowOrg(m_rect.left, m_rect.top);
        }
        else        // Make a copy of the relevent parts of the current DC for printing
        {
            m_bPrinting = pDC->m_bPrinting;
            m_hDC       = pDC->m_hDC;
            m_hAttribDC = pDC->m_hAttribDC;
        }
    }
    
    // Destructor copies the contents of the mem DC to the original DC
    ~CMemDC()
    {
        if (m_bMemDC) 
        {    
            // Copy the offscreen bitmap onto the screen.
            m_pDC->BitBlt(m_rect.left, m_rect.top, m_rect.Width(), m_rect.Height(),
                          this, m_rect.left, m_rect.top, SRCCOPY);

            //Swap back the original bitmap.
            SelectObject(m_pOldBitmap);
        } else {
            // All we need to do is replace the DC with an illegal value,
            // this keeps us from accidently deleting the handles associated with
            // the CDC that was passed to the constructor.
            m_hDC = m_hAttribDC = NULL;
        }
    }

    // Allow usage as a pointer
    CMemDC* operator->() {return this;}
        
    // Allow usage as a pointer
    operator CMemDC*() {return this;}

private:
    CBitmap  m_bitmap;      // Offscreen bitmap
    CBitmap* m_pOldBitmap;  // bitmap originally found in CMemDC
    CDC*     m_pDC;         // Saves CDC passed in constructor
    CRect    m_rect;        // Rectangle of drawing area.
    BOOL     m_bMemDC;      // TRUE if CDC really is a Memory DC.
};


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

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

#endif // !defined(AFX_BUTTONST_H__6D9F72AC_50E0_49F9_8AC2_CC2ED604D2A8__INCLUDED_)