C / C++ / MFC

5-Sep-07 23:12

Hi Everyone,

Am new to VC++.Am using list control(report type) to represent my data obtained from serial port.Am able to select the data in the list control but not able to copy. Should i need to write any code for copying data from control list.I don't want to copy the data to any other controls with in the project.What i need is to select the data in control list, press ctrl+c and copy the data to notepad/word.Please help me out.

Thanks in advance

ThatsAlok5-Sep-07 23:31

ThatsAlok

5-Sep-07 23:31

shir_k wrote:
Should i need to write any code for copying data from control list

yes you have to write the code for implement same. look this code for copying data in to clipboard memeory http://www.codeproject.com/clipboard/archerclipboard1.asp[^]

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cheers,
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shir_k6-Sep-07 1:18

6-Sep-07 1:18

HI,

I went through the link u have sent that doesn't matches with my requirement.First thing is am using control list box and am not having any button to copy.What i need is
1) Select the data in the control list by using mouse
2)copy by pressing ctrl+ C
3)pasting in a notepad or word document(outside the project).

Thanks

Nishad S6-Sep-07 1:38

Nishad S

6-Sep-07 1:38

Use accelerator for Ctrl + C. Thus you will get the event (Ctrl+C press) and follow as ThatsAlok said

- NS -

shir_k6-Sep-07 2:27

6-Sep-07 2:27

Could u plz tell me how to use accelerator for Ctrl+c

David Crow6-Sep-07 3:19

David Crow

6-Sep-07 3:19

From within the IDE, press Ctrl+R and select Accelerator from the list of types. Click the New button. Double-click the newly added accelerator item. Check the Ctrl checkbox. Type a C in the Key combobox. Press Enter. You should now have a Ctrl+C accelerator key. Check out the LoadAccelerators() function.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Copy the data in List control using ctrl+C [modified]

ThatsAlok6-Sep-07 5:02

ThatsAlok

6-Sep-07 5:02

you have to handle WM_KEYDOWN message for ctrl+c and there you have to read the text from listctrl and copy that into clipboard.. which can be copied anywhere using ctrl+ v

shir_k8-Sep-07 19:52

8-Sep-07 19:52

Hi Guys,

Can u ppl please explain step by step how to do it.Sorry for the trouble.
Am writing code in MFC Application.
Thanks for the help i was able to do it.

-- modified at 1:33 Wednesday 12th September, 2007

UDP Server

Andy2025-Sep-07 23:01

5-Sep-07 23:01

I would like my UDP server to send the data when the client connects; say at a rate of 100 msec.
But I can only get it working when the Server does a receive first (so the client has to do a send) then the Server does the send.

Can this be done? The server fails if I do not do the Receive and the client fails if I dont run the server first.

See code below:-

	while(g_bUDP_Socket_Created && g_bUDPStatus)<br />
	{<br />
		bytesRead = recvfrom (conn_socket, (char *)&RxBuffer, sizeof(RxBuffer), 0, (struct sockaddr *)&from, &length);<br />
		// bytesRead = recv(conn_socket, BufferIn, sizeof(BufferIn), 0);<br />
		// Check for error and terminate the thread if any found<br />
		if (bytesRead == SOCKET_ERROR) <br />
		{<br />
			g_szFormatting.Format("Couldn't receive data, %d",WSAGetLastError());<br />
			::MessageBox((HWND)NULL,g_szFormatting, NULL,MB_ICONEXCLAMATION );<br />
			closesocket (conn_socket);<br />
			WSACleanup();<br />
			return -1;<br />
		}<br />
<br />
		retval = sendto (conn_socket, (char*)TxBuffer, sizeof(Tx_Data), 0, (struct sockaddr *)&from, fromlen);<br />
		if (retval == SOCKET_ERROR)<br />
		{	<br />
			g_szFormatting.Format("Couldn't send data, %d",WSAGetLastError());<br />
			::MessageBox((HWND)NULL,g_szFormatting, NULL,MB_ICONEXCLAMATION );<br />
			closesocket (conn_socket);<br />
			WSACleanup();<br />
		}<br />
	}

Mark Salsbery6-Sep-07 5:51

Mark Salsbery

6-Sep-07 5:51

Are you getting an error? If so, what is the error code returned by WSAGetLastError()?

Andy202 wrote:
say at a rate of 100 msec.

That isn't a rate, that's a duration.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Andy2026-Sep-07 10:58

6-Sep-07 10:58

If I comment out the receive I get error 10057 on the send.

All I want to do is transmit a UDP message at 10Hz. The client can be running or not. I will use port 5001, but I do not need to know the client PC.

The client will need to know both Port and PC - correct?

Andy.

Mark Salsbery6-Sep-07 11:33

Mark Salsbery

6-Sep-07 11:33

Andy202 wrote:
If I comment out the receive I get error 10057 on the send.

The error is WSAENOTCONN.
That's expected since you're using the "from" address from the recvfrom(),
which isn't going to be a valid address without a successful recvfrom() call.

Andy202 wrote:
I would like my UDP server to send the data when the client connects;

UDP is connectionless so you don't know if a client is connected or not.

It sounds like you need to either...

1) Keep track of clients that are listening - that would mean a client has to send a notification to
the server when it's ready to receive datagrams. The server can store a list of "connected" clients and
send the periodic datagrams to every address on the list.

2) Broadcast the periodic datagrams. Set the socket option SO_BROADCAST on the socket and send
to the broadcast address (INADDR_BROADCAST). The clients need to set the SO_BROADCAST socket option
as well.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Andy2027-Sep-07 4:48

7-Sep-07 4:48

Thanks again for your Post Mark, I now get Error = 10057 when the Client is not running and Error = 10093 when the Client is running.

// Setup port addresses<br />
local.sin_family = AF_INET;<br />
local.sin_addr.s_addr = INADDR_BROADCAST;<br />
local.sin_port = htons(port);<br />
<br />
conn_socket = socket(AF_INET, socket_type, 0); /* Open a socket */<br />
<br />
if (setsockopt (conn_socket, SOL_SOCKET, SO_BROADCAST, (char *) &TxBuffer, sizeof (TxBuffer)) == SOCKET_ERROR)<br />
{<br />
	closesocket (conn_socket);<br />
	g_szFormatting.Format("setsockopt() failed: %d\n",WSAGetLastError());<br />
	ReportMessages(g_szFormatting);<br />
	WSACleanup();<br />
	return false;<br />
}<br />
<br />
//Make it so you can attach more than one thing to a socket<br />
if (setsockopt (conn_socket, SOL_SOCKET, SO_REUSEADDR , (char *) &optval, sizeof(optval))  == SOCKET_ERROR)<br />
{				<br />
	g_szFormatting.Format("Couldn't set SO_REUSEADDR %d\n ", WSAGetLastError());<br />
	ReportMessages(g_szFormatting);<br />
	closesocket (conn_socket);<br />
	WSACleanup();<br />
	return false;<br />
}

And in the Writer Thread:-

while(g_bUDP_Socket_Created && g_bUDPStatus)<br />
{<br />
<br />
retval = sendto (conn_socket, (char*)TxBuffer, sizeof(Tx_Data), 0, NULL , 0);<br />
	if (retval == SOCKET_ERROR)<br />
	{	<br />
		g_szFormatting.Format("Couldn't send data, %d",WSAGetLastError());<br />
		::MessageBox((HWND)NULL,g_szFormatting, NULL,MB_ICONEXCLAMATION );<br />
		closesocket (conn_socket);<br />
		WSACleanup();<br />
	}<br />
	Sleep(1000);<br />
}<br />
// Close the Winsock and tidy up<br />
closesocket(conn_socket);<br />
WSACleanup();

Mark Salsbery7-Sep-07 5:22

Mark Salsbery

7-Sep-07 5:22

Error 10093 WSANOTINITIALISED Successful WSAStartup not yet performed

Also...

You need to create a proper UDP socket:

conn_socket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP

); /* Open a socket */<br />
<br />

and sendto() needs a destination address.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Andy2027-Sep-07 9:13

7-Sep-07 9:13

One final question Mark, if I just want to Broadcast UDP packets out on a local network, what destination address do I use?