学步园

这里用了ExtractIconEx函数来提取进程的图标

在Process类中添加几个函数：

public string getFullPath() //获得进程文件的路径<br /> {<br /> StringBuilder s = new StringBuilder();<br /> s.Capacity=100;<br /> Process.GetModuleFileName(this.ProcessId, s, s.Capacity);<br /> string path = Path.GetFullPath(s.ToString());<br /> return path;<br /> }</p> <p> public Icon GetIconFromExe()<br /> {<br /> IntPtr hLargeIcon = IntPtr.Zero;<br /> IntPtr hSmallIcon = IntPtr.Zero;<br /> string path = this.getFullPath();<br /> try<br /> {<br /> ExtractIconEx(path, 0, ref hLargeIcon, ref hSmallIcon, 1);<br /> }<br /> catch (Exception ex)<br /> {<br /> throw new Exception(ex.Message);<br /> }<br /> Icon ic = null;<br /> try<br /> {<br /> ic = (Icon)Icon.FromHandle(hSmallIcon).Clone();<br /> }<br /> catch (Exception e)<br /> {<br /> return null;<br /> }<br /> return ic;<br /> }</p> <p> [DllImport("coredll.dll", CharSet = CharSet.Auto)]<br /> public extern static int GetModuleFileName(uint hModule, StringBuilder strFullPath, int nSize);</p> <p> [DllImport("coredll.dll", SetLastError = true)]<br /> private static extern IntPtr ExtractIconEx(string fileName, int index, ref IntPtr hIconLarge, ref IntPtr hIconSmall, uint nIcons);<br />

来看一下显示获得的图标，这需要在界面的listView控件中加入imageList

private void RefreshList()<br /> {<br /> processes = Process.GetProcesses();</p> <p> ListViewItem lvi;</p> <p> listProcess.BeginUpdate();<br /> listProcess.Items.Clear();<br /> ImageList imageListSmall = new ImageList();<br /> int i = 0;</p> <p> foreach (Process p in processes)<br /> {<br /> lvi = new ListViewItem(p.ProcessName);<br /> Icon ic;<br /> ic = p.GetIconFromExe();<br /> if (ic != null)<br /> {<br /> imageListSmall.Images.Add(ic);<br /> lvi.ImageIndex = i++;<br /> }</p> <p> String pid = String.Format("{0:x}", p.ProcessId);<br /> lvi.SubItems.Add(pid);<br /> lvi.SubItems.Add(p.ThreadCount.ToString());<br /> listProcess.Items.Add(lvi);<br /> }<br /> listProcess.SmallImageList = imageListSmall;</p> <p> listProcess.EndUpdate();<br /> }</p> <p>

其中listProcess是一个listView控件的实例