在资源管理器添加的右键菜单在Win7 x86上可以，但在win2008 x64上不行。
—————-这是源码
int IContextMenu.QueryContextMenu(uint hmenu,uint iMenu, int idCmdFirst,int idCmdLast,uint uFlags)
  {
  // The first id to use (should be 1)
  int id = 1;
  if ((uFlags & 0xf) == 0 || (uFlags & (uint)CMF.CMF_EXPLORE) != 0)
  {
  // Create a new Menu Item to add to the context menu
  MENUITEMINFO mii = new MENUITEMINFO();
  mii.cbSize = 48;
  mii.fMask = (uint)MIIM.ID | (uint)MIIM.TYPE | (uint)MIIM.STATE;
  mii.wID = idCmdFirst + id;
  mii.fType = (uint)MF.STRING;
  mii.dwTypeData = http://topic.csdn.net/u/20100722/13/"Send file(s) to CheapFTP member(s)";
  mii.fState = (uint)MF.ENABLED;
  // Add it to the item
  DllImports.InsertMenuItem(hmenu, (uint)2, 1, ref mii);

  id = 2;
  // Create a new Menu Item to add to the context menu
  MENUITEMINFO miii = new MENUITEMINFO();
  miii.cbSize = 48;
  miii.fMask = (uint)MIIM.ID | (uint)MIIM.TYPE | (uint)MIIM.STATE;
  miii.wID = idCmdFirst + id;
  miii.fType = (uint)MF.STRING;
  miii.dwTypeData = http://topic.csdn.net/u/20100722/13/"Quick Send file(s) to CheapFTP preferred member(s)";
  miii.fState = (uint)MF.ENABLED;
  // Add it to the item
  DllImports.InsertMenuItem(hmenu, (uint)2, 1, ref miii);

  id = 3;
  // Create a seperator
  MENUITEMINFO sep = new MENUITEMINFO();
  sep.cbSize = 48;
  sep.fMask = (uint)MIIM.TYPE;
  sep.wID = idCmdFirst + id;
  sep.fType = (uint)MF.SEPARATOR;
  // Add it to the seperator to the context menu
  DllImports.InsertMenuItem(hmenu, (uint)2, 1, ref sep);
  }  
  // Return the number of items added
  return id;
  }
  void IContextMenu.InvokeCommand(IntPtr pici)
  {
  try
  {
  //fileList
  StringBuilder fileList = new StringBuilder();
  StringBuilder sb = new StringBuilder(1024);
  uint i = 0;
  //Get number of files
  uint uNumFiles = 0;
  uNumFiles = DllImports.DragQueryFile(m_hDrop, 0xFFFFFFFF, null, 0);
  //make file name 
  while (i < uNumFiles)
  {
  DllImports.DragQueryFile(m_hDrop, i, sb, sb.Capacity + 1);
  fileList.Append(sb + ",");
  i++;
  }
  // Determine which of the context menus was clicked
  Type t = Type.GetType("ShellExt.INVOKECOMMANDINFO");
  INVOKECOMMANDINFO ici;
  ici = (INVOKECOMMANDINFO)Marshal.PtrToStructure(pici, t);
  switch (ici.verb – 1)
  {
  case 0:
  // Send File(s) to CheapFTP client
  Process.Start("c:\\CheapFTP.exe", "\"" + fileList.ToString() + "\"");
  break;
  case 1:
  // Send File(s) to CheapFTP client with QuickSend Flag enabled
  fileList.Append("QuickSend,");
  Process.Start("c:\\CheapFTP.exe", "\"" + fileList.ToString() + "\"");
  break;
  default:
  MessageBox.Show("Shell Error");
  break;
  }
  }
  catch(Exception e)
  {
  System.Windows.Forms.MessageBox.Show("Error : " + e.ToString(), 
  "Error in CheapFTP installation. Please re-install.");
  }
  }