C / C++ / MFC

jpyp wrote:

The queue size parameter in listen() does not affect the number of simultaneous connections that the server will accept

<small>// create listener socket (svr_sck)
...
hTerminateEvent = ::CreateEvent(NULL, false, false, NULL);
hNetEvent = ::CreateEvent(NULL, true, false, NULL); // manual reset
::WSAEventSelect(svr_sck, hNetEvent, FD_ACCEPT);</small>

<small>while (1)
{
	#define EVENT_NET		0
	#define EVENT_TERMINATE	1
	HANDLE Events[] =
	{
		hNetEvent,
		hTerminateEvent
	};
	DWORD dwEventIndex = ::WaitForMultipleObjects(sizeof(Events) / sizeof(HANDLE),
							Events, FALSE, INFINITE);
	if (dwEventIndex == WAIT_FAILED)
	{
		break;
	}
	dwEventIndex -= WAIT_OBJECT_0;
 
	// Check if thread termination requested
 
	if (dwEventIndex == EVENT_TERMINATE)
	{
		break;
	}
 
	// Check if FD_ACCEPT socket notification
 
	if (dwEventIndex == EVENT_NET)
	{
		WSANETWORKEVENTS WsaNetworkEvents;
		if (0 == ::WSAEnumNetworkEvents(svr_sck, hNetEvent, &WsaNetworkEvents)) //(resets hNetEvent)
		{
			if (WsaNetworkEvents.lNetworkEvents & FD_ACCEPT)
			{
				sockaddr SockAddr;
				int SockAddrLen = sizeof(sockaddr);
				SOCKET hSocket = ::WSAAccept(svr_sck, &SockAddr, &SockAddrLen,
							AcceptConditionProc, (DWORD_PTR)tal_scks);
				if (hSocket != INVALID_SOCKET)
				{
					// save the socket in an array
					...
					total_scks++;
				}
			}
		}
	}
 
}  //while (1)
 
::ExitThread(0U);
 
return 0U; //never get here - just makes compiler happy</small>

<small>int CALLBACK AcceptConditionProc(LPWSABUF lpCallerId,
				LPWSABUF lpCallerData,
				LPQOS lpSQOS,
				LPQOS lpGQOS,
				LPWSABUF lpCalleeId,
				LPWSABUF lpCalleeData,
				GROUP FAR * g,
				DWORD_PTR dwCallbackData)
{
	// Return CF_ACCEPT, CF_REJECT, or CF_DEFER
 
	int ConnectionCount = (int)dwCallbackData;
 
	if (ConnectionCount < MAX_SCKS)
	{
		return CF_ACCEPT;
	}
 
	return CF_REJECT;
}</small>

<small>// create the socket
...
// connect the socket to server
result = mySck.Connect(ip address, port number);
if (!result)
{
// report error
...
}
else
{
	// Check if server refused connection
	int err = 0;
	int sockret = ::send(mySck.m_hSocket, (const char *)&err, 0, 0);
	if (sockret == SOCKET_ERROR)
	{
		err = ::WSAGetLastError();
		mySck.Close();
		TRACE1( "** Connection refused by server (::send() 0 bytes returned errcode %li)\n", err);
		return;
	}
}</small>

Johpoke wrote:

while(MBUTTON3 == DOWN)

Johpoke wrote:

ive used while left button down...

Johpoke wrote:

but i cant find out how to do while scroll wheel down...

Johpoke wrote:

but i cant find out how to use it.. it needs windows.h, but what else do i need to do?

Johpoke wrote:

is it hard to detect middle mouse globaly?

BOOL CCameraControlDlg::PreTranslateMessage(MSG* pMsg) <br />
{<br />
	// TODO: Add your specialized code here and/or call the base class<br />
<br />
	if (GetAsyncKeyState(VK_TAB) < 0) { <br />
		CCameraControlDlg::ManualMode();<br />
	}<br />
	Sleep(10);<br />
	return CDialog::PreTranslateMessage(pMsg);<br />
<br />
}

<br />
void CCameraControlDlg::ManualMode() {<br />
.<br />
.<br />
.<br />
<br />
if ((GetAsyncKeyState(VK_F2) < 0) && ((control_nr == 2) || (control_nr == 0))) {	<br />
<br />
       x_F2 = MouseScroll(menu_roof, reset_val);<br />
 <br />
       m_dlgMenu.ShowWindow(SW_SHOW);<br />
       m_dlgMenu.m_strHeader.Format("White Balance");<br />
       m_dlgMenu.m_strChoice.Format(menu_text_F2[x_F2]);<br />
		<br />
       m_dlgMenu.UpdateData(FALSE); <br />
		<br />
       control_nr = 2;<br />
<br />
}<br />
<br />
else if (control_nr == 2) {<br />
				<br />
       m_dlgMenu.ShowWindow(SW_HIDE)<br />
       control_nr = 0;<br />
}<br />
<br />
.<br />
.<br />
.<br />
}<br />