ymselector.h

选择年/月的控制 选择年/月的控制

// YMSelector.h
// Control to select year and month
// Designed and developed by Shekar Narayanan
// [e-mail]
// 

#if !defined(AFX_YMSELECTOR_H__12C342F1_008C_11D2_AECD_0004AC31E75C__INCLUDED_)
#define AFX_YMSELECTOR_H__12C342F1_008C_11D2_AECD_0004AC31E75C__INCLUDED_

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

#define     START_YEAR      1900
#define     END_YEAR        2050    
#define     YM_SELECTED     WM_USER + 50
#define     YM_ABORTED      WM_USER + 51

/////////////////////////////////////////////////////////////////////////////
// CYMPopUp window
// Used by the YMSelector control

class CYMPopUp : public CWnd
{
// Construction
public:
	CYMPopUp(CPoint p, CWnd* pParent, int nYear = -1, int nMonth = -1);

// Attributes
public:

// Operations
public:
    BOOL Create(CPoint p, CWnd* pParent);

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CYMPopUp)
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CYMPopUp();

	// Generated message map functions
protected:
	BOOL	m_inPlus;
	BOOL	m_inMinus;
    int     m_nYear;
    int     m_nMonth;
    CBrush  m_bkBrush;
    CWnd*   m_pParent;
    CRect   m_rCells[12];
    CRect   m_rMinus;
    CRect   m_rPlus;
    CRect   m_rYear;

	//{{AFX_MSG(CYMPopUp)
	afx_msg void OnNcDestroy();
	afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
	afx_msg void OnPaint();
	afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
	afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
	afx_msg BOOL OnEraseBkgnd(CDC* pDC) ;
	afx_msg void OnMouseMove(UINT nFlags, CPoint point);
	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()
};

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

/////////////////////////////////////////////////////////////////////////////
// CYMSelector window

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

// Attributes
public:

    void    SetYear(int y);
    void    SetMonth(int m);
    int     GetYear();
    int     GetMonth();
    LPCTSTR GetMonthString();

// Operations
public:

// Overrides
	// ClassWizard generated virtual function overrides
	//{{AFX_VIRTUAL(CYMSelector)
	public:
	virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	protected:
	virtual void PreSubclassWindow();
	//}}AFX_VIRTUAL

// Implementation
public:
	virtual ~CYMSelector();

	// Generated message map functions
protected:
    int m_nMonth;
    int m_nYear;
	//{{AFX_MSG(CYMSelector)
	afx_msg void OnClicked();
	//}}AFX_MSG
    afx_msg LONG YMSelected(WPARAM wParam = 0, LPARAM lParam = 0);
    afx_msg LONG YMAborted (WPARAM wParam = 0, LPARAM lParam = 0);

	DECLARE_MESSAGE_MAP()
};

// MemDC.h : header file
//

//////////////////////////////////////////////////
// CMemDC - memory DC
//
// Author: Keith Rule
// Email:  [e-mail]
// Copyright 1996-1997, Keith Rule
//
// You may freely use or modify this code provided this
// Copyright is included in all derived versions.
//
// History - 10/3/97 Fixed scrolling bug.
//                   Added print support.
//           25 feb 98 - fixed minor assertion bug
//
// This class implements a memory Device Context

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 Developer Studio will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_YMSELECTOR_H__12C342F1_008C_11D2_AECD_0004AC31E75C__INCLUDED_)