mfc 圆角按钮

第一步：往项目中添加MyButton.h 和MyButton.cpp 两个文件。

第二步：然后将自己需要的BitMap文件导入。

第三步：在项目工程的CARMDlg::OnInitDialog()中添加如下代码：

       

       SetIcon(m_hIcon,TRUE);                    // Set big icon
       SetIcon(m_hIcon,FALSE);           // Set small icon

       m_bkg.LoadBitmap(IDB_BMP_BKG);//系统的背景颜色
 
       m_nCollectGoods.SetBitmap(IDB_BITMAP_BUTTON,BUTTON_STATE_UP);
       m_nCollectGoods.SetBitmap(IDB_BITMAP_BUTTONB,BUTTON_STATE_DOWN);
       m_nCollectGoods.HideText(FALSE);
       m_nCollectGoods.FontStyle(L"MS Sans Serif", 14,8,TRUE, FALSE);
       m_nCollectGoods.SetTextColor(RGB(255,0,0));   

第四步：在CARMDlg::OnPaint()中添加如下代码，实现对窗口的重绘：   

        //CDialog::OnPaint();
        CPaintDC dc(this);
        CBrush brush;
        brush.CreatePatternBrush(&m_bkg);
        CBrush *pOld=dc.SelectObject(&brush);
        CRect rc;
        GetClientRect(rc);
        dc.FillRect(rc,&brush);    
        dc.SelectObject(pOld);    
        pOld->DeleteObject();
        brush.DeleteObject();

需要注意的地方：

1.     在添加按钮对应的成员变量的时候，类型应该选择CMyButton而不是CButton

 

#if !defined(AFX_MYBUTTON_H__10830B07_8C08_492A_8AC9_8B3CF805C775__INCLUDED_)
#define AFX_MYBUTTON_H__10830B07_8C08_492A_8AC9_8B3CF805C775__INCLUDED_
 
#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// MyButton.h :header file
//
//#include"ZTGDlg.h"
 
/////////////////////////////////////////////////////////////////////////////
// CMyButtonwindow
typedef enum{
       BUTTON_STATE_UP=0,
       BUTTON_STATE_DOWN,
       BUTTON_STATE_DISABLE
}BUTTON_STATE;
 
class CMyButton :public CButton
{
// Construction
public:
       CMyButton();
      
 
// Attributes
public:
 
// Operations
public:
       void PreSubclassWindow();
       void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
       BOOL SetBitmap(int ID,BUTTON_STATEs=BUTTON_STATE_UP);
       BOOL SetBitmap(LPCTSTR path,BUTTON_STATE s=BUTTON_STATE_UP);
       inline void           HideText(BOOLbHide = TRUE) {m_bHideText = bHide; }
       void SetTextColor(COLORREF TextColor = RGB(0,0,0));
 
       BOOL FontStyle(CString sFont , int iHeight,int iWidth, BOOL bFont3D, BOOLbConcave);
 
       void PaintText(HDC h_clientDC,CRect m_rc);
// Overrides
       // ClassWizard generated virtual function overrides
       //{{AFX_VIRTUAL(CMyButton)
       //}}AFX_VIRTUAL
 
// Implementation
public:
       virtual ~CMyButton();
 
       // Generated message map functions
protected:
       //{{AFX_MSG(CMyButton)
       afx_msg void OnLButtonDown(UINTnFlags,CPoint point);
       afx_msg void OnLButtonUp(UINTnFlags,CPoint point);
       afx_msg void OnEnable(BOOLbEnable);
       //}}AFX_MSG
 
       DECLARE_MESSAGE_MAP()
private:
       BOOL m_isdown;
       BOOL m_isable;
       CBitmap m_bitmapUp;
       CBitmap m_bitmapDown;
       CBitmap m_bitmapDisable;
       CFont           m_Font;
       BOOL          m_bFontCreated;
       COLORREF       m_TextColor;
       BOOL          m_bFont3D;
       BOOL          m_bConcave;
       BOOL          m_bHideText;
       HANDLE           m_hFile;
       LPCSTR             m_lpWave;
};
  

//{{AFX_INSERT_LOCATION}}
// MicrosoftVisual C++ will insert additional declarations immediately before the previousline.
 
#endif //!defined(AFX_MYBUTTON_H__10830B07_8C08_492A_8AC9_8B3CF805C775__INCLUDED_)
// MyButton.cpp :implementation file
//
 
#include "stdafx.h"
//#include"ZTGDlg.h"
//#include"ZTG.h"
#include "MyButton.h"
 
#ifdef _DEBUG
#define newDEBUG_NEW
#undef THIS_FILE
static charTHIS_FILE[] = __FILE__;
#endif
 
 
/////////////////////////////////////////////////////////////////////////////
// CMyButton
 
CMyButton::CMyButton()
{
       m_isable = TRUE;
       m_isdown = FALSE;
       m_bFontCreated               =FALSE;
       m_TextColor                            =RGB(0,0,0);
       m_bFont3D                       =FALSE;
       m_bConcave                            =FALSE;
       m_bHideText                           =TRUE;
       m_hFile                             =INVALID_HANDLE_VALUE;
       m_lpWave                         =NULL;
}
 
CMyButton::~CMyButton()
{
       if(m_hFile !=INVALID_HANDLE_VALUE)
       {
              CloseHandle(m_hFile);
              m_hFile = INVALID_HANDLE_VALUE;
       }
 
       if(m_lpWave !=NULL)
       {
              free((void*)m_lpWave);
              m_lpWave = NULL;
       }
 
       if(m_bFontCreated)
       {
              m_Font.DeleteObject();
       }
}
 
void CMyButton::PreSubclassWindow()
{
       ModifyStyle(0,BS_OWNERDRAW);
}
 
void CMyButton::DrawItem(LPDRAWITEMSTRUCTlpDrawItemStruct)
{
       CRect m_rc;
       CDC m_mem;
       CDC             *pDC=NULL;
       BITMAP m_bmp ;
       CBitmap *m_oldBitmap =NULL;
       CString sCaption;
       HDC            h_clientDC;
 
 
       h_clientDC   = lpDrawItemStruct->hDC;
       pDC                    =CDC::FromHandle(lpDrawItemStruct->hDC);
       GetWindowText(sCaption);
       m_rc = lpDrawItemStruct->rcItem;
       pDC->SetBkMode(TRANSPARENT);
       m_mem.CreateCompatibleDC(pDC);
 
      
 
       if(!m_isable)
       {
              m_oldBitmap = m_mem.SelectObject(&m_bitmapDisable);
              m_bitmapDisable.GetBitmap(&m_bmp);
       }
       else if(m_isdown)
       {
              m_oldBitmap = m_mem.SelectObject(&m_bitmapDown);
              m_bitmapDown.GetBitmap(&m_bmp);
       }
       else
       {
              m_oldBitmap = m_mem.SelectObject(&m_bitmapUp);
              m_bitmapUp.GetBitmap(&m_bmp);
       }
      
      
pDC->StretchBlt(0,0,m_rc.right-m_rc.left,m_rc.bottom-m_rc.top,&m_mem,0,0,m_bmp.bmWidth,m_bmp.bmHeight,SRCCOPY);
       pDC->SelectObject(m_oldBitmap);
       if(m_bHideText ==FALSE)
       {
              PaintText(h_clientDC,m_rc);
       }
 
       m_mem.DeleteDC();
}
 
BOOL CMyButton::SetBitmap(intID,BUTTON_STATEs/* =BUTTON_STATE_UP */)
{
       if(s ==BUTTON_STATE_UP)
              return m_bitmapUp.LoadBitmap(ID);
       if(s ==BUTTON_STATE_DOWN)
              return m_bitmapDown.LoadBitmap(ID);
       if(s ==BUTTON_STATE_DISABLE)
              return m_bitmapDisable.LoadBitmap(ID);
 
       return FALSE;
}
 
BOOL CMyButton::SetBitmap(LPCTSTRpath,BUTTON_STATEs/* =BUTTON_STATE_UP */)
{
       if(s ==BUTTON_STATE_UP)
              return m_bitmapUp.LoadBitmap(path);
       if(s ==BUTTON_STATE_DOWN)
              return m_bitmapDown.LoadBitmap(path);
       if(s ==BUTTON_STATE_DISABLE)
              return m_bitmapDisable.LoadBitmap(path);
      
       return FALSE;
}
 
 
void CMyButton::PaintText(HDCh_clientDC, CRectm_rc)
{
       CFont*         def_font;
       CString         sCaption;
       CDC *pDC =CDC::FromHandle(h_clientDC);
 
       GetWindowText(sCaption);
 
       if(m_bFontCreated)
       {
              def_font = pDC->SelectObject(&m_Font);
       }
 
       pDC->SetBkMode(TRANSPARENT);
 
 
       if(m_bFont3D)
       {
              if(m_bConcave)
              {
                     pDC->SetTextColor(RGB(255,255,255));
                     pDC->DrawText(sCaption,m_rc, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
                     pDC->SetTextColor(m_TextColor);
                     m_rc.left=m_rc.left- 1;
                     m_rc.top=m_rc.top- 1;
                     m_rc.bottom =m_rc.bottom - 1;
                     m_rc.right=m_rc.right- 1;
                     pDC->DrawText(sCaption,m_rc, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
 
 
              }
              else
              {
                     pDC->SetTextColor(RGB(255,255,255));
                     pDC->DrawText(sCaption,m_rc, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
                     pDC->SetTextColor(m_TextColor);
                     m_rc.left=m_rc.left+ 1;
                     m_rc.top=m_rc.top+ 1;
                     m_rc.bottom =m_rc.bottom + 1;
                     m_rc.right=m_rc.right+ 1;
                     pDC->DrawText(sCaption,m_rc, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
 
              }
       }
       else
       {
              pDC->SetTextColor(m_TextColor);
              pDC->DrawText(sCaption,m_rc, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
 
       }
 
       if(m_bFontCreated)
       {
              pDC->SelectObject(def_font);
       }
}
 
 
 
BOOL CMyButton::FontStyle(CStringsFont, int iHeight, int iWidth,BOOL bFont3D, BOOL bConcave)
{
      
       if(m_bFontCreated)
       {
              m_Font.DeleteObject();
       }
 
       if(0 != m_Font.CreateFont(iHeight,iWidth, 0, 0,
                                   FW_BOLD,//FW_NORMAL,
                                   0, 0, 0, 0,0, 0, 0,0, sFont))
       {
              m_bFontCreated        =TRUE;
              m_bFont3D = bFont3D;
              m_bConcave = bConcave;
              return     TRUE;
       }
       else
       {
              m_bFontCreated        =FALSE;
              return FALSE;
       }
}
 
 
void CMyButton::SetTextColor(COLORREFTextColor)
{
       m_TextColor = TextColor;
       return;
}
 
 
 
BEGIN_MESSAGE_MAP(CMyButton,CButton)
       //{{AFX_MSG_MAP(CMyButton)
       ON_WM_LBUTTONDOWN()
       ON_WM_LBUTTONUP()
       ON_WM_ENABLE()
       //}}AFX_MSG_MAP
END_MESSAGE_MAP()
 
/////////////////////////////////////////////////////////////////////////////
// CMyButtonmessage handlers
 
void CMyButton::OnLButtonDown(UINTnFlags,CPoint point)
{
       m_isdown = TRUE;
       CButton::OnLButtonDown(nFlags,point);
}
 
void CMyButton::OnLButtonUp(UINTnFlags,CPoint point)
{
       m_isdown = FALSE;
       CButton::OnLButtonUp(nFlags,point);
}
 
 
void CMyButton::OnEnable(BOOLbEnable)
{
       CButton::OnEnable(bEnable);
       m_isable = bEnable;
}