问一个关于文件拖放的问题

在做一个压缩的软件.想实现一种效果:把列表框显示的压缩包内文件拖放到资源管理器后会自动解压到对应的地方.  
  请问当把文件拖放到指定文件夹后如何通知程序由它来进行解压操作?  
  谢谢! 问题点数：100、回复次数：7Top

1 楼an_bachelor（洗澡就是浪費生命）回复于 2005-08-04 05:29:38 得分 50

在你的程序中响应WM_DROPFILES   Message  
   
  --------------------------------------------------------------------------------  
   
  Sent   when   the   user   drops   a   file   on   the   window   of   an   application   that   has   registered   itself   as   a   recipient   of   dropped   files.  
   
  Syntax  
   
   
  To   send   this   message,   call   the   SendMessage   function   as   follows.    
  lResult   =   SendMessage(             //   returns   LRESULT   in   lResult           (HWND)   hWndControl,             //   handle   to   destination   control           (UINT)   WM_DROPFILES,             //   message   ID           (WPARAM)   wParam,             //   =   (WPARAM)   (HDROP)   hDrop;         (LPARAM)   lParam             //   =   0;   not   used,   must   be   zero   );        
  Parameters  
   
  hDrop  
  Handle   to   an   internal   structure   describing   the   dropped   files.   Pass   this   handle   DragFinish,   DragQueryFile,   or   DragQueryPoint   to   retrieve   information   about   the   dropped   files.    
  lParam  
  Must   be   zero.  
  Return   Value  
   
  An   application   should   return   zero   if   it   processes   this   message.  
   
   
   
  Remarks  
   
  The   HDROP   handle   is   declared   in   Shellapi.h.   You   must   include   this   header   in   your   build   to   use   WM_DROPFILES.   For   further   discussion   of   how   to   use   drag-and-drop   to   transfer   Shell   data,   see   Transferring   Shell   Data   Using   Drag-and-Drop   or   the   Clipboard.  
   
  Message   Information  
   
  Header   winuser.h    
  Minimum   operating   systems   Windows   NT   3.1,   Windows   95    
   
  See   Also  
   
  DragAcceptFiles  
   
  --------------------------------------------------------------------------------  
   
  ©   2005   Microsoft   Corporation.   All   rights   reserved.Top

2 楼jiangsheng（蒋晟.Net[MVP]）回复于 2005-08-04 07:07:01 得分 50

Transferring   Shell   Objects   with   Drag-and-Drop   and   the   Clipboard    
  http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/shell/programmersguide/shell_basics/shell_basics_programming/transferring/transfer.aspTop

3 楼vcleaner（我没当大哥很久了.......）回复于 2005-08-04 08:44:14 得分 0

需要你的软件支持拖放，程序中需要处理一些关于拖放的消息。Top

4 楼firesnowd（火雪）回复于 2005-08-04 23:26:03 得分 0

WM_DROPFILES怎样用的,有没有例子.谢谢!Top

5 楼realmiss（边缘）回复于 2005-08-05 00:21:34 得分 0

查msdn吧Top

6 楼firesnowd（火雪）回复于 2005-08-05 00:31:35 得分 0

WM_DROPFILES不是有文件拖放到本程序窗口上才触发的吗?    
  但我是要把本程序窗口上的文件拖放到浏览器那里去,当鼠标放下时由本程序进行处理.Top

7 楼firesnowd（火雪）回复于 2005-08-05 17:28:06 得分 0

msdn上说可以用IASyncOperation   ,但又找不到具体的用法Top

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