#ifndef __UIHEADICON_H__

 #define __UIHEADICON_H__

 /*

     名称：圆形头像控件（派生CButtonUI类）

 */

 class  CHeadUI: public CButtonUI

 {

 public:

     CHeadUI();

     LPCTSTR GetClass() const;

     LPVOID GetInterface(LPCTSTR pstrName);

     void SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue);

     void PaintBkImage(HDC hDC);

     void SetBkImage(LPCTSTR pStrImage);

     void SetDefaultBkImage(LPCTSTR pStrImage){ m_sDefaultBkImage = pStrImage; }

     CDuiString GetDefaultBkImage(){ return m_sDefaultBkImage; }

     void SetAutoPenColor(bool bAuto){ m_bAutoPenColor = bAuto; }

     bool IsAutoPenColor() { return m_bAutoPenColor; }

     void SetPenColor(DWORD dwColor){ m_dwPenColor = dwColor; }

     DWORD GetPenColor(HDC hDC);

     void SetPenWidth(int nPenWidth){ m_nPenWidth = nPenWidth; }

     int GetPenWidth(){ return m_nPenWidth; }

     bool IsHeadImageExist(LPCTSTR pStrImage);

 private:

     CDuiString m_sDefaultBkImage;

     bool m_bAutoPenColor;

     DWORD m_dwPenColor;

     int m_nPenWidth;

 };

 #endif // __UIHEADICON_H__

 #include "StdAfx.h"

 #include "UIHeadIcon.h"

 CHeadUI::CHeadUI()

 {

     m_sDefaultBkImage = _T("Head\\100_1.png");

     m_bAutoPenColor = false;

     m_dwPenColor = Color(, , , ).GetValue();

     m_nPenWidth = ;

 }

 LPCTSTR CHeadUI::GetClass() const

 {

     return _T("HeadIconUI");

 }

 LPVOID CHeadUI::GetInterface(LPCTSTR pstrName)

 {

     if( _tcscmp(pstrName, _T("HeadIcon")) ==  ) return static_cast<CHeadUI*>(this);

     return CControlUI::GetInterface(pstrName);

 }

 void CHeadUI::SetAttribute(LPCTSTR pstrName, LPCTSTR pstrValue)

 {

     if (_tcscmp(pstrName, _T("defaultbkimage")) == ) SetDefaultBkImage(pstrValue);

     else if (_tcscmp(pstrName, _T("bkimage")) == ) SetBkImage(pstrValue);

     else if (_tcscmp(pstrName, _T("pencolor")) == ) {

         while (*pstrValue > _T('\0') && *pstrValue <= _T(' ')) pstrValue = ::CharNext(pstrValue);

         if (*pstrValue == _T('#')) pstrValue = ::CharNext(pstrValue);

         LPTSTR pstr = NULL;

         DWORD clrColor = _tcstoul(pstrValue, &pstr, );

         SetPenColor(clrColor);

     }

     else if (_tcscmp(pstrName, _T("autopencolor")) == ) SetAutoPenColor(_tcscmp(pstrValue, _T("true")) == );

     else if (_tcscmp(pstrName, _T("penwidth")) == ) SetPenWidth(_ttoi(pstrValue));

     else return CButtonUI::SetAttribute(pstrName, pstrValue);

 }

 void CHeadUI::SetBkImage(LPCTSTR pStrImage)

 {

     if (IsHeadImageExist(pStrImage))

     {

         m_sBkImage = pStrImage;

     }

     else

     {

         TCHAR tszModule[MAX_PATH + ] = {  };

         ::GetModuleFileName(CPaintManagerUI::GetInstance(), tszModule, MAX_PATH);

         CDuiString sInstancePath = tszModule;

         int pos = sInstancePath.ReverseFind(_T('\\'));

         if (pos >= ) sInstancePath = sInstancePath.Left(pos + );

         sInstancePath.Append(pStrImage);

         if (IsHeadImageExist(sInstancePath))

         {

             m_sBkImage = sInstancePath;

         }

         else

         {

             m_sBkImage = pStrImage;

         }

     }

     Invalidate();

 }

 void CHeadUI::PaintBkImage(HDC hDC)

 {

     //坐标

     POINT    pt = { m_rcItem.left, m_rcItem.top };

     //大小

     SIZE    sz = { m_rcItem.right - m_rcItem.left, m_rcItem.bottom - m_rcItem.top };

     Graphics    graphics(hDC);

     if (graphics.GetLastStatus() != Ok)

         return;

     //消除锯齿

     graphics.SetSmoothingMode(SmoothingModeHighQuality);    

     GraphicsPath graphicspath;

     if (graphicspath.GetLastStatus() != Ok)

         return;

     graphicspath.AddEllipse(pt.x, pt.y, sz.cx, sz.cy);

     //设置裁剪圆

     graphics.SetClip(&graphicspath, CombineModeReplace);

     Image image(GetBkImage());

     if (image.GetLastStatus() != Ok)

         return;

     //绘制图像

     graphics.DrawImage(&image, pt.x, pt.y, sz.cx, sz.cy);

     //绘制一个1像素宽度的圆形，用于消除锯齿

     Pen    myPen(GetPenColor(hDC), GetPenWidth());

     if (myPen.GetLastStatus() != Ok)

         return;

     graphics.DrawEllipse(&myPen, pt.x, pt.y, sz.cx, sz.cy);

 }

 DWORD CHeadUI::GetPenColor(HDC hDC)

 {

     if (IsAutoPenColor())

     {

         //像素值颜色取点（ pt.x + 1, pt.y + 1）的值

         RECT rc = GetPos();

         COLORREF color = GetPixel(hDC, rc.left + , rc.top + );

         BYTE r = GetRValue(color);

         BYTE g = GetGValue(color);

         BYTE b = GetBValue(color);

         return Color(, r, g, b).GetValue();

     }

     return m_dwPenColor;

 }

 bool CHeadUI::IsHeadImageExist(LPCTSTR pStrImage)

 {

     return GetFileAttributes(pStrImage) == - ? false : true;

 }

<HeadIcon name="photo" bkimage="photo.png" autopencolor="true" float="true" pos="260,10,0,0" width="70" height="60"/>

 CControlUI* CLoginWnd::CreateControl( LPCTSTR pstrClassName )

 {

     if (_tcsicmp(pstrClassName, _T("HeadIcon")) == )

     {

         return new CHeadUI;

     }

     return NULL;

 }