c++ 消息传递（通过SendMessage）

 
  
  

  
   
   //同一进程间传递 
 
  
  
 
  
  


 
  
  
 
  
  

  
   
   char
  
   
   * 
  
   
   msg
  
   
   =
  
   
   "ttbb"
  
   
   ;
 
  
  
 
  
  

  
   
   ::
  
   
   SendMessage
  
   
   (
  
   
   hwnd
  
   
   ,
  
   
   Thread_Msg_Student
  
   
   ,
  
   
   0
  
   
   ,(
  
   
   LPARAM
  
   
   )
  
   
   msg
  
   
   );
 
  
  
 
  
  


 
  
  
 
  
  

  
   
   //不同进程间,传递字符串通过copydata的方式
 
  
  
 
  
  

  
   
   //发一定注意发送的结构
 
  
  
 
  
  

  
   
   
 
  
  
tagCOPYDATASTRUCT netDataPacket;
netDataPacket.dwData = 0;
	netDataPacket.cbData =strlen(strInfo)+1;
		netDataPacket.lpData = strInfo;
	::SendMessage(hwnd,WM_COPYDATA,0,(LPARAM)&netDataPacket);
//接
BOOL CStudentNetProxyDlg::OnCopyData(CWnd*, COPYDATASTRUCT*netData)
{

	if(netData->lpData)												  
	{
		char  * pp=(char *)netData->lpData;
 		CStringA strMsg;
		strMsg.Format(pp);
 		

		return TRUE;
	}



	return FALSE;
}