#pragma once
#include "afxwin.h"/
// 工程: YF_GCM -> ButtonDemo
// 作者: **
// 描述: 自绘制位图按钮
// 主要函数：
//         SetButtonUpBitmapEx()设置鼠标放置在按钮上的图片
//         SetButtonDownBitmapEx()设置按钮按下的图片
//         SetButtonNormalBitmapEx()设置鼠标不在按钮是的图片
// 日期: 2013.12.16
// 版本: 1.0
// 修改:
/
// CBitmapButtonExclass CPngButton : public CBitmapButton
{DECLARE_DYNAMIC(CPngButton)public:CPngButton();virtual ~CPngButton();protected:DECLARE_MESSAGE_MAP()protected:virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);public:// 设置按钮抬起图片BOOL SetButtonUpBitmapEx(const CString& szFilePath);// 设置按钮按下图片BOOL SetButtonDownBitmapEx(const CString& szFilePath);// 普通按钮图片BOOL SetButtonNormalBitmapEx(const CString& szFilePath);
protected:virtual void PreSubclassWindow();
public:virtual BOOL PreTranslateMessage(MSG* pMsg);afx_msg void OnMouseMove(UINT nFlags, CPoint point);afx_msg void OnLButtonDown(UINT nFlags, CPoint point);afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
protected:BOOL m_lButtonDown;// 按钮有效区域
//     CRgn m_btRgn;// 绘制按钮图片区域
//     CRect m_rectDrawButton;
private:// 图片CImage m_imageButtonUp;CImage m_imageButtonDown;CImage m_imageBitmapNormal;CDC m_bkDc; // 记录背景bool m_first;
public:protected:BOOL m_bMouseOver;BOOL m_bTrack;
public:
};

pngbutton.cpp

/
// 工程: YF_GCM -> ButtonDemo
// 作者: **
// 描述: 自绘制位图按钮
// 主要函数：
//         SetButtonUpBitmapEx()设置鼠标放置在按钮上的图片
//         SetButtonDownBitmapEx()设置按钮按下的图片
//         SetButtonNormalBitmapEx()设置鼠标不在按钮是的图片
// 日期: 2013.12.16
// 版本: 1.0
// 修改:
/ #include "stdafx.h"
#include "pngbutton.h"
#include "TransparentPNG.h"
// #include "LogToFile.h"// CBitmapButtonExIMPLEMENT_DYNAMIC(CPngButton, CBitmapButton)CPngButton::CPngButton(): CBitmapButton(), m_lButtonDown(FALSE), m_bMouseOver(FALSE), m_bTrack(FALSE), m_first(true)
{
}CPngButton::~CPngButton()
{if (NULL != m_imageButtonUp){::DeleteObject(m_imageButtonUp);}if (NULL != m_imageButtonDown){::DeleteObject(m_imageButtonDown);}if (NULL != m_imageBitmapNormal){::DeleteObject(m_imageButtonDown);}
}BEGIN_MESSAGE_MAP(CPngButton, CBitmapButton)ON_WM_LBUTTONDOWN()ON_WM_LBUTTONUP()ON_WM_MOUSEMOVE()
END_MESSAGE_MAP()// CBitmapButtonEx 消息处理程序BOOL CPngButton::SetButtonUpBitmapEx(const CString& szFilePath)
{if (!m_imageButtonUp.IsNull()){m_imageButtonUp.Destroy();}m_imageButtonUp.Load(szFilePath);if (!m_imageButtonUp.IsNull()){CTransparentPNG tran;tran(&m_imageButtonUp);}return !m_imageButtonUp.IsNull();
}BOOL CPngButton::SetButtonNormalBitmapEx(const CString& szFilePath)
{if (!m_imageBitmapNormal.IsNull()){m_imageBitmapNormal.Destroy();}m_imageBitmapNormal.Load(szFilePath);if (!m_imageBitmapNormal.IsNull()){CTransparentPNG tran;tran(&m_imageBitmapNormal);}return !m_imageBitmapNormal.IsNull();
}// BOOL CPngButton::SetRedPointImage(const CString& szFilePath)
// {
//     if (!m_imageRedPoint.IsNull())
//     {
//         m_imageRedPoint.Destroy();
//     }
//     m_imageRedPoint.Load(szFilePath);
//     if (!m_imageRedPoint.IsNull())
//     {
//         CTransparentPNG tran;
//         tran(&m_imageRedPoint);
//     }
//     return !m_imageRedPoint.IsNull();
// }
BOOL CPngButton::SetButtonDownBitmapEx(const CString& szFilePath)
{if (!m_imageButtonDown.IsNull()){m_imageButtonDown.Destroy();}m_imageButtonDown.Load(szFilePath);if (!m_imageButtonDown.IsNull()){CTransparentPNG tran;tran(&m_imageButtonDown);}return !m_imageButtonDown.IsNull();
}void CPngButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{// TODO:  添加您的代码以绘制指定项CRect rect =  lpDrawItemStruct->rcItem;if (m_first){// 复制背景CDialog* pParent=(CDialog*)GetParent();  CPoint pt(0,0);  MapWindowPoints(pParent,&pt,1);  CDC * pdc = GetParent ()->GetDC ();m_bkDc.CreateCompatibleDC (pdc);CBitmap memBmp;memBmp.CreateCompatibleBitmap(pdc, rect.right, rect.bottom);m_bkDc.SelectObject(&memBmp);m_bkDc.BitBlt (0, 0, rect.right, rect.bottom, pdc, pt.x, pt.y, SRCCOPY);ReleaseDC (pdc);m_first = false;}
//     CClientDC dc(this);
//     dc.Rectangle (rect);// 背景CDC* thisdc = NULL;thisdc = GetDC();thisdc->BitBlt (0, 0, rect.right, rect.bottom, &m_bkDc, 0/*rect.right*/, 0/*rect.bottom*/, SRCCOPY);if (m_lButtonDown){if (m_imageButtonDown.IsNull()){
//             CString szLog;
//             szLog.Format(_T("m_imageButtonDown 未加载背景图片!"));
//             AppLog(szLog);}else{m_imageButtonDown.Draw(thisdc->m_hDC, rect/*m_rectDrawButton*/);}}else{if (m_bMouseOver){if (m_imageButtonUp.IsNull()){
//                 CString szLog;
//                 szLog.Format(_T("m_imageButtonUp 未加载背景图片!"));
//                 AppLog(szLog);}else{m_imageButtonUp.Draw(thisdc->m_hDC, rect/*m_rectDrawButton*/);}}else{if (m_imageBitmapNormal.IsNull()){
//                 CString szLog;
//                 szLog.Format(_T("m_imageBitmapNormal 未加载背景图片!"));
//                 AppLog(szLog);}else{m_imageBitmapNormal.Draw(thisdc->m_hDC, rect/*m_rectDrawButton*/);}}}if (0 == this->ReleaseDC(thisdc)){
//         CString szLog;
//         szLog.Format(_T("ReleaseDC error!"));
//         AppLog(szLog);}
}void CPngButton::PreSubclassWindow()
{// TODO: 在此添加专用代码和/或调用基类ModifyStyle(0, WS_CLIPCHILDREN | BS_OWNERDRAW ); //设置按钮的有效区域 //     CRect rect;
//     GetClientRect(&rect);
//     CDialog* pParent=(CDialog*)GetParent();
//     CPoint pt(rect.left, rect.top);
//     MapWindowPoints(pParent, &pt, 1);
//     CDC * pdc = GetParent ()->GetDC ();
//     // 复制背景
//     m_bkDc.CreateCompatibleDC (pdc);
//     CBitmap memBmp;
//     memBmp.CreateCompatibleBitmap(pdc, rect.right, rect.bottom);
//     m_bkDc.SelectObject(&memBmp);
//     m_bkDc.BitBlt (0, 0, rect.right, rect.bottom, pdc, 0, 0, SRCCOPY);
//     ReleaseDC (pdc); //     m_btRgn.CreateRectRgnIndirect (rc);
//     SetWindowRgn(m_btRgn, TRUE); CBitmapButton::PreSubclassWindow();
}void CPngButton::OnLButtonDown(UINT nFlags, CPoint point)
{// TODO: 在此添加消息处理程序代码和/或调用默认值m_lButtonDown = TRUE;CBitmapButton::OnLButtonDown(nFlags, point);
}void CPngButton::OnLButtonUp(UINT nFlags, CPoint point)
{// TODO: 在此添加消息处理程序代码和/或调用默认值m_lButtonDown = FALSE;CBitmapButton::OnLButtonUp(nFlags, point);
}BOOL CPngButton::PreTranslateMessage(MSG* pMsg)
{// TODO: 在此添加专用代码和/或调用基类if(pMsg->message==WM_MOUSELEAVE) {m_bTrack=FALSE;m_bMouseOver = FALSE;InvalidateRect(NULL);}else if (pMsg->message==WM_MOUSEHOVER){m_bMouseOver = TRUE;InvalidateRect(NULL);}return CBitmapButton::PreTranslateMessage(pMsg);
}void CPngButton::OnMouseMove(UINT nFlags, CPoint point)
{// TODO: 在此添加消息处理程序代码和/或调用默认值if(!m_bTrack){TRACKMOUSEEVENT tme;tme.cbSize=sizeof(TRACKMOUSEEVENT);tme.dwFlags=TME_HOVER | TME_LEAVE;tme.dwHoverTime=HOVER_DEFAULT;tme.hwndTrack=m_hWnd;m_bTrack=_TrackMouseEvent(&tme);}CBitmapButton::OnMouseMove(nFlags, point);
}

CTransparentPNG 地址