C / C++ / MFC

UINT ListeningThread(LPVOID lpvoid)
{
    CMultycast_serverDlg *dlg = (CMultycast_serverDlg *)lpvoid;
    FD_SET SocketSet;               // set of socket descriptors for select()
    int port;                       // looping veriable for ports
    struct sockaddr_in echoClntAddr;// client address
    SOCKET clntSock;                // socket discriptor for client
    unsigned int clntLen;           // length of client address data structure
    int SelectResult = 0;

    dlg->SelectFlag = false;
    dlg->ExitFlag = false;
    while(!dlg->ExitFlag)
    {
        FD_ZERO(&SocketSet);
        for(port = 0 ; port < dlg->NumberOfPorts ; port++)
   	FD_SET((unsigned int)dlg->SocketsArray[port] , &SocketSet);
	SelectResult = select(dlg->MaxDescriptor + 1 , &SocketSet , NULL , 
                              NULL , &(dlg->selTimeout));
	if(SelectResult == 0)
	  continue;//AfxMessageBox("Error :  No echo requests for the time 
                                   you specified....server still listenning");
	else if(SelectResult == SOCKET_ERROR)
	{
	    AfxMessageBox("Error :  select() has failed ");
	    return 0 ;
	}
	else
	{
	    //dlg->SelectFlag = true;
	    for(port = 0 ; port < dlg->NumberOfPorts ; port++)
	    {
	        if(FD_ISSET(dlg->SocketsArray[port] , &SocketSet))
		{
		    clntLen = sizeof(echoClntAddr);//set the size of the in-  out parameter
		    //if(!dlg->SelectFlag)
		    clntSock=accept(dlg->SocketsArray[port],(struct sockaddr*)&echoClntAddr,(int *)&clntLen);
		    //dlg->SelectFlag = true;
		    if(clntSock != INVALID_SOCKET) //wait for a client to connect
		    {
		 	dlg->HandleClient(clntSock);//clntSock is connected to a client
	 		dlg->m_RecievedDataListBox.AddString(dlg->RecievedString);
			//WSACleanup();
	              }
                  }  
            } 
	}
   }
   for(port = 0 ; port < dlg->NumberOfPorts ; port++)
      closesocket(dlg->SocketsArray[port]);
   return 1;
}

void CMyClass::OnLButtonDown(UINT nFlags, CPoint point) <br />
<br />
	CPoint ptCursor = point;<br />
	<br />
	CRect r = this->GetRect();<br />
	<br />
	CImageList DragImage;<br />
	CBitmap CurrentDragImage;	<br />
		<br />
	// Create a DC for the my class<br />
	CDC dc;	<br />
	HDC hdc = ::GetDC(this->hWnd);<br />
	dc.Attach(hdc);<br />
<br />
	// Create a memory DC<br />
	CDC memDC;<br />
	memDC.CreateCompatibleDC(&dc);<br />
<br />
	CSize sz(r.Width(), r.Height());<br />
	CurrentDragImage.CreateCompatibleBitmap(&dc, sz.cx, sz.cy);<br />
	CBitmap * oldbm = memDC.SelectObject(&CurrentDragImage);<br />
<br />
	// Copy the graphics we want to drag to the bitmap<br />
	memDC.BitBlt(0, 0, sz.cx, sz.cy, &dc, r.TopLeft().x, r.TopLeft().y, SRCCOPY);<br />
		<br />
	// ***TEST CODE: This DOES work - it copies the image I want from the screen to the clipboard and can be pasted in pbrush<br />
	this->GetParent()->OpenClipboard();<br />
	::EmptyClipboard();<br />
	::SetClipboardData(CF_BITMAP, (HBITMAP)CurrentDragImage);<br />
	CloseClipboard();<br />
	// ***END TEST CODE		<br />
		<br />
	DragImage.Create(sz.cx, sz.cy, ILC_COLOR32, 0,1);<br />
		<br />
	DragImage.Add(&CurrentDragImage, RGB(0,0,0));<br />
<br />
	DragImage.BeginDrag(0, point);<br />
<br />
	DragImage.DragEnter(this->GetParent(), point);<br />
		<br />
<br />
	for (int i=20; i<200; i++)<br />
	{<br />
		CPoint g;<br />
		g.x = i;<br />
		g.y = i;<br />
		DragImage.DragMove(g);<br />
		<br />
		// Just to slow it down enough to see it	<br />
		for (int h=0; h<20000; h++);<br />
	}<br />
<br />
<br />
}