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📁 在状态条中加入bmp图像
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                  <CENTER><STRONG><FONT class=pagetitle>如何在状态条中(CStatusbar 
                  Pane)加入Bitmap图</FONT><BR></STRONG><FONT 
                  class=subtitle><BR></FONT></CENTER><FONT 
                  class=pagetext>以下的代码将演示如何在状态条的第一个方块中显示Bitmap图。Visual C++ 4.0 
                  <BR>以后的MFC的CStatusBar使用状态窗口通用控制，所以代码与早期版本有所不同。 
                  <BR><BR>在一个AppWizard应用的状态条中加入一个新的方块，在Mainfrm.cpp中加入下列语句 
                  <BR>//Mainfrm.cpp <BR><BR>static UINT indicators[] = <BR>{ 
                  <BR>ID_SEPARATOR, // status line indicator 
                  <BR>ID_INDICATOR_BITMAP, // BITMAP状态条 <BR>ID_INDICATOR_CAPS, 
                  <BR>ID_INDICATOR_NUM, <BR>ID_INDICATOR_SCRL, <BR>}; 
                  <BR><BR>从CStatusBar派生一个新类(例如CBitmapStatusBar)，并且用这个新类取代CMainFrame 
                  <BR>中的CStatusBar(Mainfrm.h) <BR>//Mainfrm.h 
                  <BR><BR>//CStatusBar m_wndStatusBar; <BR>CBitmapStatusBar 
                  m_wndStatusBar; <BR><BR>在新类的.h和.cpp中加入下面两个函数的声明和定义 
                  <BR>//BitmapStatusBar.h <BR><BR>class CMyStatusBar : public 
                  CStatusBar {... <BR>#if _MFC_VER &lt; 0x400 <BR>virtual void 
                  DoPaint(CDC* pDC); <BR>#else <BR>virtual void 
                  DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct); <BR>#endif 
                  <BR>...} <BR><BR>//BitmapStatusBar.cpp <BR><BR>#if _MFC_VER 
                  &lt; 0x400 <BR>void CBitmapStatusBar::DoPaint(CDC* pDC) <BR>{ 
                  <BR>CRect rect; <BR>GetItemRect(1, &amp;rect); //得到pane的大小 
                  <BR>pDC-&gt;ExcludeClipRect(&amp;rect); //创建新的裁剪区域 
                  <BR>CStatusBar::DoPaint(pDC); //描绘状态条(status bar)的其余部分 
                  <BR><BR>CRgn paneRgn; <BR>paneRgn.CreateRectRgnIndirect(rect); 
                  <BR>pDC-&gt;SelectClipRgn(&amp;paneRgn); //选择裁剪区域 
                  <BR><BR>CBitmap pBitmap; <BR>//加载位图,使用Import从文件加载资源,可以不受调色板限制 
                  <BR>pBitmap.LoadBitmap(IDB_BITMAP1); <BR><BR>//将当前位图放入兼容CDC 
                  <BR>CDC SourceDC; 
                  <BR>SourceDC.CreateCompatibleDC(NULL);//生成兼容的CDC <BR>CBitmap* 
                  pOldBitmap = SourceDC.SelectObject(&amp;pBitmap);//选择位图 
                  <BR>pDC-&gt;BitBlt(rect.left, rect.top, rect.Width(), 
                  rect.Height(), <BR>&amp;SourceDC, 0, 0, SRCCOPY);//BitBlt 
                  <BR>SourceDC.SelectObject(pOldBitmap);//删除CDC中所选择的位图 
                  <BR>pBitmap.DeleteObject();//删除位图 <BR>} <BR>#else <BR>void 
                  CBitmapStatusBar::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
                  <BR>{ <BR>switch(lpDrawItemStruct-&gt;itemID) <BR>{ <BR>case 
                  1: <BR>//从资源中选择位图 <BR>CBitmap pBitmap; 
                  <BR>//加载位图,使用Import从文件加载资源,可以不受调色板限制 
                  <BR>pBitmap.LoadBitmap(IDB_BITMAP1); 
                  <BR><BR>//将状态条(StatusBar)附加到一个CDC对象 <BR>CDC dc,SourceDC; 
                  <BR>dc.Attach(lpDrawItemStruct-&gt;hDC); 
                  <BR><BR>//得到pane的大小和坐标 <BR>CRect 
                  rect(&amp;lpDrawItemStruct-&gt;rcItem); <BR><BR>//将当前位图放入兼容CDC 
                  <BR>SourceDC.CreateCompatibleDC(NULL);//生成兼容的CDC <BR>CBitmap* 
                  pOldBitmap = SourceDC.SelectObject(&amp;pBitmap);//选择位图 
                  <BR>dc.BitBlt(rect].left, rect.top, rect.Width(), 
                  rect.Height(), <BR>&amp;SourceDC, 0, 0, SRCCOPY);//BitBlt 
                  <BR>SourceDC.SelectObject(pOldBitmap);//删除CDC中所选择的位图 
                  <BR>pBitmap.DeleteObject();//删除位图 
                  <BR><BR>//将状态条(StatusBar)与CDC对象分离,否则hDC将会在CDC废弃时被删除 
                  <BR>dc.Detach(); <BR><BR>return; <BR>} 
                  <BR>CStatusBar::DrawItem(lpDrawItemStruct); <BR>} <BR>#endif 
                  <BR><BR>在Mainfrm.cpp的CMainFrame::OnCreate()中加入下面的代码 
                  <BR>//Mainfrm.cpp <BR><BR>int 
                  CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct){... <BR>if 
                  (!m_wndStatusBar.Create(this) || 
                  !m_wndStatusBar.SetIndicators(indicators, 
                  sizeof(indicators)/sizeof(UINT))){ <BR>TRACE0("Failed to 
                  create status bar\n"); <BR>return -1; // fail to create <BR>} 
                  <BR>//加入下列代码 <BR>#if _MFC_VER &gt;= 0x400 <BR>UINT nID, 
                  nStyle; <BR>int cxWidth; <BR><BR>m_wndStatusBar.GetPaneInfo(1, 
                  nID, nStyle, cxWidth); <BR>m_wndStatusBar.SetPaneInfo(1, nID, 
                  nStyle | SBT_OWNERDRAW, cxWidth); <BR>#endif <BR>...} 
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