Thread: Program freezing..

Here is my code:

Code:

BOOL CALLBACK DlgProc(HWND hwnd, UINT Message, WPARAM wParam, LPARAM lParam)
{

	HWND display = GetDlgItem(hwnd,IDL_DISPLAY);
	int n = 0;

	switch(Message)
	{
		case WM_INITDIALOG:
		{
			WSADATA w;

			if(WSAStartup(0x0202,&w))
				SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Error in initializing WinSock.");
			else
				SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Winsock initialized successfully.");
			
			n++;
			
			if(w.wVersion != 0x0202)
			{
				SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Wrong version of Winsock.");
				WSACleanup();
			}
			else
				SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Right version of Winsock (2.2)");

			n++;

		}
		break;
	
		case WM_CREATE:

		break;
	
		case WM_COMMAND:
			switch(LOWORD(wParam))
			{
				case IDC_LISTEN:
				{
					SOCKET listener;
					UINT listenport;

					listenport = GetDlgItemInt(hwnd,IDC_SERVERPORT,NULL,false);
					
					listener = socket(AF_INET,SOCK_STREAM,0);

					if(listener == INVALID_SOCKET)
					{
						SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Listening socket error.");
						WSACleanup();
					}
					else
						SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Listening socket created successfully");

					n++;
					
					sockaddr_in serveraddr;

					serveraddr.sin_family = AF_INET;
					serveraddr.sin_port = htons(listenport);
					serveraddr.sin_addr.s_addr = htonl(INADDR_ANY);

					if(bind(listener,(LPSOCKADDR)&serveraddr,sizeof(serveraddr)) == SOCKET_ERROR)
					{
						SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Error binding listening port.");
						WSACleanup();
					}

					if(listen(listener,1) == SOCKET_ERROR)
					{
						SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Error listening.");
						closesocket(listener);
						WSACleanup();
					}
					else
					{
						SOCKET client;

						client = accept(listener,NULL,NULL);

						if(client == INVALID_SOCKET)
						{
							SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Cannont accept connection.");
							closesocket(listener);
							WSACleanup();
						}
						else
						{
							char *buffer;

							while(buffer != "---")
							{
								buffer = "---";

								recv(client,buffer,sizeof(buffer),0);

								if(buffer != "---")
								{
									if(strlen(buffer) > 0)
									{
										SendMessage(display,LB_ADDSTRING,n,(LPARAM)buffer);
										n++;
									}
									else
									{
										closesocket(listener);
										SendMessage(display,LB_ADDSTRING,n,(LPARAM)"-- Connection closed");
										WSACleanup();
									}
								}
							}
						}
					}										
				}
				break;
			}
		break;

		case WM_CLOSE:
			EndDialog(hwnd,0);
		break;
		
		case WM_DESTROY:
		
		break;
		default:
			return FALSE;
	}
	return TRUE;
}

When I run the program and click listen it freezes. I think I have the problem singled out to the "accept". If I take out all the code from accept and below, it works fine. If I just leave the accept and take out the socket code below it, it freezes. What could be the problem?