自己用---关于进度条倒计时问题。

void CProgressDlg::OnButton1()   
{  
    // TODO: Add your control notification handler code here   
    m_progress.SetRange(0,100);  
    m_progress.SetStep(10);  
    m_progress.SetPos(0);  
    int i=0;  
    while (i<9)  
    {  
        i++;  
        m_progress.StepIt();  
        Sleep(100);  
    }     
}  

//以下是CPP文件   
// TextProgressCtrl.cpp : implementation file   
//   
  
  
#include "stdafx.h"   
#include "TextProgressCtrl.h"   
  
#ifdef _DEBUG   
#define new DEBUG_NEW   
#undef THIS_FILE   
static char THIS_FILE[] = __FILE__;  
#endif   
  
  
#ifndef _MEMDC_H_   
//   
  
  
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.   
};  
  
#endif   
  
  
  
/   
// CTextProgressCtrl   
  
CTextProgressCtrl::CTextProgressCtrl()  
{  
    m_nPos            = 0;  
    m_nStepSize        = 1;  
    m_nMax            = 100;  
    m_nMin            = 0;  
    m_bShowText        = TRUE;  
    m_strText.Empty();  
    m_colFore        = ::GetSysColor(COLOR_HIGHLIGHT);  
    m_colBk            = ::GetSysColor(COLOR_WINDOW);  
    m_colTextFore    = ::GetSysColor(COLOR_HIGHLIGHT);  
    m_colTextBk        = ::GetSysColor(COLOR_WINDOW);  
  
    m_nBarWidth = -1;  
}  
  
CTextProgressCtrl::~CTextProgressCtrl()  
{  
}  
  
BEGIN_MESSAGE_MAP(CTextProgressCtrl, CProgressCtrl)  
    //{{AFX_MSG_MAP(CTextProgressCtrl)   
    ON_WM_ERASEBKGND()  
    ON_WM_PAINT()  
    ON_WM_SIZE()  
    //}}AFX_MSG_MAP   
    ON_MESSAGE(WM_SETTEXT, OnSetText)  
    ON_MESSAGE(WM_GETTEXT, OnGetText)  
END_MESSAGE_MAP()  
  
/   
// CTextProgressCtrl message handlers   
  
LRESULT CTextProgressCtrl::OnSetText(UINT, LPCTSTR szText)  
{  
    LRESULT result = Default();  
  
    if ( (!szText && m_strText.GetLength()) ||  
         (szText && (m_strText != szText))   )  
    {  
        m_strText = szText;  
        Invalidate();  
    }  
  
    return result;  
}  
  
LRESULT CTextProgressCtrl::OnGetText(UINT cchTextMax, LPTSTR szText)  
{  
    if (!_tcsncpy(szText, m_strText, cchTextMax))  
        return 0;  
    else   
        return min(cchTextMax, (UINT) m_strText.GetLength());  
}  
  
BOOL CTextProgressCtrl::OnEraseBkgnd(CDC* /*pDC*/)   
{      
     return TRUE;  
}  
  
void CTextProgressCtrl::OnSize(UINT nType, int cx, int cy)   
{  
    CProgressCtrl::OnSize(nType, cx, cy);  
      
    m_nBarWidth    = -1;   // Force update if SetPos called   
}  
  
void CTextProgressCtrl::OnPaint()   
{  
    if (m_nMin >= m_nMax)   
        return;  
  
    CRect LeftRect, RightRect, ClientRect;  
    GetClientRect(ClientRect);  
  
    double Fraction = (double)(m_nPos - m_nMin) / ((double)(m_nMax - m_nMin));  
  
    CPaintDC PaintDC(this); // device context for painting   
    CMemDC dc(&PaintDC);  
    //CPaintDC dc(this);    // device context for painting (if not double buffering)   
  
    LeftRect = RightRect = ClientRect;  
  
    LeftRect.right = LeftRect.left + (int)((LeftRect.right - LeftRect.left)*Fraction);  
    dc.FillSolidRect(LeftRect, m_colFore);  
  
    RightRect.left = LeftRect.right;  
    dc.FillSolidRect(RightRect, m_colBk);  
  
    if (m_bShowText)  
    {  
        CString str;  
        if (m_strText.GetLength())  
            str = m_strText;  
        else  
            str.Format("剩余时间：%d秒", (int)(35-Fraction*35.0));  
  
        dc.SetBkMode(TRANSPARENT);  
  
        CRgn rgn;  
        rgn.CreateRectRgn(LeftRect.left, LeftRect.top, LeftRect.right, LeftRect.bottom);  
        dc.SelectClipRgn(&rgn);  
        dc.SetTextColor(m_colTextBk);  
  
        dc.DrawText(str, ClientRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);  
  
        rgn.DeleteObject();  
        rgn.CreateRectRgn(RightRect.left, RightRect.top, RightRect.right, RightRect.bottom);  
        dc.SelectClipRgn(&rgn);  
        dc.SetTextColor(m_colTextFore);  
  
        dc.DrawText(str, ClientRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);  
    }  
}  
  
void CTextProgressCtrl::SetForeColour(COLORREF col)  
{  
    m_colFore = col;  
}  
  
void CTextProgressCtrl::SetBkColour(COLORREF col)  
{  
    m_colBk = col;  
}  
  
void CTextProgressCtrl::SetTextForeColour(COLORREF col)  
{  
    m_colTextFore = col;  
}  
  
void CTextProgressCtrl::SetTextBkColour(COLORREF col)  
{  
    m_colTextBk = col;  
}  
  
COLORREF CTextProgressCtrl::GetForeColour()  
{  
    return m_colFore;  
}  
  
COLORREF CTextProgressCtrl::GetBkColour()  
{  
    return m_colBk;  
}  
  
COLORREF CTextProgressCtrl::GetTextForeColour()  
{  
    return m_colTextFore;  
}  
  
COLORREF CTextProgressCtrl::GetTextBkColour()  
{  
    return m_colTextBk;  
}  
/   
// CTextProgressCtrl message handlers   
  
void CTextProgressCtrl::SetShowText(BOOL bShow)  
{   
    if (::IsWindow(m_hWnd) && m_bShowText != bShow)  
        Invalidate();  
  
    m_bShowText = bShow;  
}  
  
  
void CTextProgressCtrl::SetRange(int nLower, int nUpper)  
{  
    m_nMax = nUpper;  
    m_nMin = nLower;  
}  
  
int CTextProgressCtrl::SetPos(int nPos)   
{      
    if (!::IsWindow(m_hWnd))  
        return -1;  
  
    int nOldPos = m_nPos;  
    m_nPos = nPos;  
  
    CRect rect;  
    GetClientRect(rect);  
  
    double Fraction = (double)(m_nPos - m_nMin) / ((double)(m_nMax - m_nMin));  
    int nBarWidth = (int) (Fraction * rect.Width());  
  
    if (nBarWidth != m_nBarWidth)  
    {  
        m_nBarWidth = nBarWidth;  
        RedrawWindow();  
    }  
  
    return nOldPos;  
}  
  
int CTextProgressCtrl::StepIt()   
{      
   return SetPos(m_nPos + m_nStepSize);  
}  
  
int CTextProgressCtrl::OffsetPos(int nPos)  
{  
    return SetPos(m_nPos + nPos);  
}  
  
int CTextProgressCtrl::SetStep(int nStep)  
{  
    int nOldStep = nStep;  
    m_nStepSize = nStep;  
    return nOldStep;  
}   

//以下是CPP文件
// TextProgressCtrl.cpp : implementation file
//
 
 
#include "stdafx.h"
#include "TextProgressCtrl.h"
 
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
 
 
#ifndef _MEMDC_H_
//
 
 
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.
};
 
#endif
 
 
 
/
// CTextProgressCtrl
 
CTextProgressCtrl::CTextProgressCtrl()
{
    m_nPos            = 0;
    m_nStepSize        = 1;
    m_nMax            = 100;
    m_nMin            = 0;
    m_bShowText        = TRUE;
    m_strText.Empty();
    m_colFore        = ::GetSysColor(COLOR_HIGHLIGHT);
    m_colBk            = ::GetSysColor(COLOR_WINDOW);
    m_colTextFore    = ::GetSysColor(COLOR_HIGHLIGHT);
    m_colTextBk        = ::GetSysColor(COLOR_WINDOW);
 
    m_nBarWidth = -1;
}
 
CTextProgressCtrl::~CTextProgressCtrl()
{
}
 
BEGIN_MESSAGE_MAP(CTextProgressCtrl, CProgressCtrl)
    //{{AFX_MSG_MAP(CTextProgressCtrl)
    ON_WM_ERASEBKGND()
    ON_WM_PAINT()
    ON_WM_SIZE()
    //}}AFX_MSG_MAP
    ON_MESSAGE(WM_SETTEXT, OnSetText)
    ON_MESSAGE(WM_GETTEXT, OnGetText)
END_MESSAGE_MAP()
 
/
// CTextProgressCtrl message handlers
 
LRESULT CTextProgressCtrl::OnSetText(UINT, LPCTSTR szText)
{
    LRESULT result = Default();
 
    if ( (!szText && m_strText.GetLength()) ||
         (szText && (m_strText != szText))   )
    {
        m_strText = szText;
        Invalidate();
    }
 
    return result;
}
 
LRESULT CTextProgressCtrl::OnGetText(UINT cchTextMax, LPTSTR szText)
{
    if (!_tcsncpy(szText, m_strText, cchTextMax))
        return 0;
    else 
        return min(cchTextMax, (UINT) m_strText.GetLength());
}
 
BOOL CTextProgressCtrl::OnEraseBkgnd(CDC* /*pDC*/) 
{    
     return TRUE;
}
 
void CTextProgressCtrl::OnSize(UINT nType, int cx, int cy) 
{
    CProgressCtrl::OnSize(nType, cx, cy);
    
    m_nBarWidth    = -1;   // Force update if SetPos called
}
 
void CTextProgressCtrl::OnPaint() 
{
    if (m_nMin >= m_nMax) 
        return;
 
    CRect LeftRect, RightRect, ClientRect;
    GetClientRect(ClientRect);
 
    double Fraction = (double)(m_nPos - m_nMin) / ((double)(m_nMax - m_nMin));
 
    CPaintDC PaintDC(this); // device context for painting
    CMemDC dc(&PaintDC);
    //CPaintDC dc(this);    // device context for painting (if not double buffering)
 
    LeftRect = RightRect = ClientRect;
 
    LeftRect.right = LeftRect.left + (int)((LeftRect.right - LeftRect.left)*Fraction);
    dc.FillSolidRect(LeftRect, m_colFore);
 
    RightRect.left = LeftRect.right;
    dc.FillSolidRect(RightRect, m_colBk);
 
    if (m_bShowText)
    {
        CString str;
        if (m_strText.GetLength())
            str = m_strText;
        else
            str.Format("剩余时间：%d秒", (int)(35-Fraction*35.0));
 
        dc.SetBkMode(TRANSPARENT);
 
        CRgn rgn;
        rgn.CreateRectRgn(LeftRect.left, LeftRect.top, LeftRect.right, LeftRect.bottom);
        dc.SelectClipRgn(&rgn);
        dc.SetTextColor(m_colTextBk);
 
        dc.DrawText(str, ClientRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
 
        rgn.DeleteObject();
        rgn.CreateRectRgn(RightRect.left, RightRect.top, RightRect.right, RightRect.bottom);
        dc.SelectClipRgn(&rgn);
        dc.SetTextColor(m_colTextFore);
 
        dc.DrawText(str, ClientRect, DT_CENTER | DT_VCENTER | DT_SINGLELINE);
    }
}
 
void CTextProgressCtrl::SetForeColour(COLORREF col)
{
    m_colFore = col;
}
 
void CTextProgressCtrl::SetBkColour(COLORREF col)
{
    m_colBk = col;
}
 
void CTextProgressCtrl::SetTextForeColour(COLORREF col)
{
    m_colTextFore = col;
}
 
void CTextProgressCtrl::SetTextBkColour(COLORREF col)
{
    m_colTextBk = col;
}
 
COLORREF CTextProgressCtrl::GetForeColour()
{
    return m_colFore;
}
 
COLORREF CTextProgressCtrl::GetBkColour()
{
    return m_colBk;
}
 
COLORREF CTextProgressCtrl::GetTextForeColour()
{
    return m_colTextFore;
}
 
COLORREF CTextProgressCtrl::GetTextBkColour()
{
    return m_colTextBk;
}
/
// CTextProgressCtrl message handlers
 
void CTextProgressCtrl::SetShowText(BOOL bShow)
{ 
    if (::IsWindow(m_hWnd) && m_bShowText != bShow)
        Invalidate();
 
    m_bShowText = bShow;
}
 
 
void CTextProgressCtrl::SetRange(int nLower, int nUpper)
{
    m_nMax = nUpper;
    m_nMin = nLower;
}
 
int CTextProgressCtrl::SetPos(int nPos) 
{    
    if (!::IsWindow(m_hWnd))
        return -1;
 
    int nOldPos = m_nPos;
    m_nPos = nPos;
 
    CRect rect;
    GetClientRect(rect);
 
    double Fraction = (double)(m_nPos - m_nMin) / ((double)(m_nMax - m_nMin));
    int nBarWidth = (int) (Fraction * rect.Width());
 
    if (nBarWidth != m_nBarWidth)
    {
        m_nBarWidth = nBarWidth;
        RedrawWindow();
    }
 
    return nOldPos;
}
 
int CTextProgressCtrl::StepIt() 
{    
   return SetPos(m_nPos + m_nStepSize);
}
 
int CTextProgressCtrl::OffsetPos(int nPos)
{
    return SetPos(m_nPos + nPos);
}
 
int CTextProgressCtrl::SetStep(int nStep)
{
    int nOldStep = nStep;
    m_nStepSize = nStep;
    return nOldStep;
} 

 

 

 

 

.h

public:
    int            SetPos(int nPos);
    int            StepIt();
    void        SetRange(int nLower, int nUpper);
    int            OffsetPos(int nPos);
    int            SetStep(int nStep);
    void        SetForeColour(COLORREF col);
    void        SetBkColour(COLORREF col);
    void        SetTextForeColour(COLORREF col);
    void        SetTextBkColour(COLORREF col);
    COLORREF    GetForeColour();
    COLORREF    GetBkColour();
    COLORREF    GetTextForeColour();
    COLORREF    GetTextBkColour();

    void        SetShowText(BOOL bShow);

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

// Implementation
public:
    virtual ~CTextProgressCtrl();

    // Generated message map functions
protected:
    int         m_nPos, 
                m_nStepSize, 
                m_nMax, 
                m_nMin;
    CString     m_strText;
    BOOL        m_bShowText;
    int         m_nBarWidth;
    COLORREF    m_colFore,
                m_colBk,
                m_colTextFore,
                m_colTextBk;

    //{{AFX_MSG(CTextProgressCtrl)
    afx_msg BOOL OnEraseBkgnd(CDC* pDC);
    afx_msg void OnPaint();
    afx_msg void OnSize(UINT nType, int cx, int cy);
    //}}AFX_MSG
    afx_msg LRESULT OnSetText(UINT, LPCTSTR szText);
    afx_msg LRESULT OnGetText(UINT cchTextMax, LPTSTR szText);

    DECLARE_MESSAGE_MAP()
};

 

 

 

.cpp

1. BOOL CKOBEDlg::OnInitDialog()   
2. {   
3.     CDialog::OnInitDialog();   
4.    
5.     // Add "About..." menu item to system menu.    
6.    
7.     // IDM_ABOUTBOX must be in the system command range.    
8.     ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX);   
9.     ASSERT(IDM_ABOUTBOX < 0xF000);   
10.    
11.     CMenu* pSysMenu = GetSystemMenu(FALSE);   
12.     if (pSysMenu != NULL)   
13.     {   
14.         CString strAboutMenu;   
15.         strAboutMenu.LoadString(IDS_ABOUTBOX);   
16.         if (!strAboutMenu.IsEmpty())   
17.         {   
18.             pSysMenu->AppendMenu(MF_SEPARATOR);   
19.             pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu);   
20.         }   
21.     }   
22.    
23.     // Set the icon for this dialog.  The framework does this automatically    
24.     //  when the application's main window is not a dialog    
25.     SetIcon(m_hIcon, TRUE);         // Set big icon    
26.     SetIcon(m_hIcon, FALSE);        // Set small icon    
27.     m_progress.SetRange(0,35);   
28.     m_progress.SetPos(0);   
29.     m_progress.SetStep(1);   
30.     m_progress.SetForeColour(RGB(0,0,255));   
31.     m_progress.SetBkColour(RGB(0,0,0));   
32.     m_progress.SetTextForeColour(RGB(0,255,0));   
33.    
34. //  m_progress.SetRange(0,100);    
35. //  m_progress.SetPos(0);    
36. //  m_progress2.SetRange(0,100);    
37. //  m_progress2.SetPos(0);    
38.     // TODO: Add extra initialization here    
39.     SetTimer(1,1000,NULL);   
40.     return TRUE;  // return TRUE  unless you set the focus to a control    
41. }  
44.  
45. void CKOBEDlg::OnTimer(UINT nIDEvent)    
46. {   
47.     // TODO: Add your message handler code here and/or call default    
48.     if (i<35)   
49.     {   
50.         i+=1;   
51.         m_progress.SetPos(i);   
52. //      m_progress2.SetPos(i);    
53.     }   
54.        
55.     CDialog::OnTimer(nIDEvent);   
56. }