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how can send haeder i am sending and receiving as follows
rVal=send(sock, text, strlen(text), 0);
rVal=recv(sock,data,strlen(data),0);
but i am sending text but i can not receive accurate length of text. please send me if you have any example code.
and also a another problem is i have to send to multiple cleint so which method i should apply.please reply me ASAP.
thanks
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Sorry I do not have example code to send - this is something that I did long ago on a DSP processor.
What you can do is send and recieve twice, something like this:
typedef struct{
int packetId; // if this is appropriate for you needs
int len;
}packet_S;
sendHdr.len = strlen(text);
rVal=send(sock,sendHdr,strlen(packet_S),0);
rVal=send(sock,text,sendHdr.len ,0);
rVal=recv(sock,recvHdr,strlen(packet_S),0);
dataLen = recvHdr.len;
rVal=recv(sock,data,dataLen,0);
As far as the best way to send to multiple clients, I do not know. You might do well to post a separate question in the forum again.
I hope this helps.
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Hi all,
I am new to C++ and I want to get the value from a text box merge it with another string and then re-populate the text box. I am using the text box in a windows form.
Here is the code I have tried but doesn't work
string S1;
S1 = this->textBox1->Text;
textBox1->Text = S1 + "Test1";
Thanks
Ben
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You would be having some control for the text box.
If not go to class wizard and create it. Let us name it as tb.Now you can access the text box text by calling GetWindowText. Modify the string and use SetWindowText to set the text back to the text box
Regards
Anshuman
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prefer the GetWindowText() and SetWindowText() that handles CStrings :
CString strMsg = <font color=gray>" World"</font>;
CString strEditContent; <font color=green>
<font color=green>
CEdit* pEdit = (CEdit*)GetDlgItem(IDC_MY_EDIT</font>);
<font color=green>
pEdit->GetWindowText(strEditContent);
<font color=green>
strEditContent += strMsg;
<font color=green>
pEdit->SetWindowText(strEditContent);
TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VisualCalc 3.0]
-- modified at 7:18 Monday 16th January, 2006
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Gktony wrote: string S1;
S1 = this->textBox1->Text;
textBox1->Text = S1 + "Test1";
this is certainly a VB++!! 
0x0400:
"But your mind is very complex, very tricky. It makes simple things complicated. -- that's its work. And for centuries it has been trained for only one thing: to make things so complicated that your life becomes impossible."- Osho
<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[V]--
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Thank you all for your replies. I see you are using SetWindowText() and GetWindowText(). In the meantime I have tried the following and it worked.
String* S1 = textBox1->Text;
textBox1->Text = String::Concat(S1, S"Test");
Am I not suppose to code like that in C++ as there are better way of doing it?
Thanks
Ben
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it seems that there had a misunderstood.
you are coding for .NET framework (so your question should be asked in the C++/CLI forum).
our answer were in fact for Win32 / MFC...
so don't take them in account.
TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VisualCalc 3.0]
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I have initialized all the namespace declaration in a certain .h file. Then include the .h file in a CView class, it turned OK,
But when i used the same namespace and include the .h file in a CDialog class. An error occurred: "Already defined in CView.obj file".
HOw can I access a namespace in 2 separate classes or files?
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hi ,
i made an application that can receive a file as unicast and multicast it in dialog based application , but it works only once ,mean to send another file i have to restart the application , so i think using thread i will not require to restart the application , it will receive data as unicast and send it as multicast ,
plz help me to do it ,if possibe give me an example of code.
my id is tosachingupta@gmail.com
thanks
sachin
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cancerion wrote: but it works only once ,mean to send another file i have to restart the application
What has threads got to do with it. There must be something wrong with your application design.
Well as far as threads are concerned you can use
AfxBeginThread(...) //for starting off a thread
AfxEndThread()//to clean up a thread.
And take a look at the CWinThread class too.
cancerion wrote: if possibe give me an example of code.
my id is tosachingupta@gmail.com
Run
Jesus Loves ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
--Owner Drawn
--Nothing special
--Defeat is temporary but surrender is permanent
--Never say quits
--Jesus is Lord
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Its simple as that.. (this is a worker for you!)
in the header, declare as
UINT Threader(LPVOID p);
void realThread();
in the implementation,
UINT YourDialog::Threader(LPVOID p)
{
YourDialog* me = (YourDialog*)p;
me->realThread();
return 0;
}
void realThread()
{
do
{
}while(1);
}
then as said by drawn, you can use AfxBeginThread to start the thread
ie,
CWinThread *cwt=AfxBeginThread(realThread,this);
cwt->suspend();,cwt->resume(); ..ect then the thread is under your control
0x0400:
"But your mind is very complex, very tricky. It makes simple things complicated. -- that's its work. And for centuries it has been trained for only one thing: to make things so complicated that your life becomes impossible."- Osho
<marquee scrollamount="1" scrolldelay="1" direction="up" height="10" step="1">--[V]--
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Can someone please write me a procedure which rescale a video image in UYVY format, from size 352*288 to 117*96 (scale factor of 3)? Please help. Thanks in advanced.
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Hi,
How can i change the caption of the columns headers using the MS DataGrid 6 ?
Is there any way to find out which record is selected using the mouse click event ?
Best Regards,
sdancer75
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There is one thing I can't figure out with VC 6.0 & ADO. How can I change the 'Background Fetch Size' (DBPROP_ASYNCFETCHSIZE) property of the recordset running asynchron? It's the number of records retrieved between two fetchprogress events. It's default is 15.
It's easy to do it in VB, but in VC++ before opening the recordset, I don't have any dynamic properties available, after executing the SQL the property is read only. I suppose if it's possible in VB it must be possible in VC++ 6.00 as well. I've hard times finding any docs about it even in SDK. As far as I know this OLEDB property is supported by the Cursor Service, which is initilaized when changing cursor to adUseClient.
Any idea?
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I have a class on a library on the file Libr.h/.cpp
I build a doc/view app.
I link the header in Doc.h using #include "Libr.h",
and the code is pasted in Doc.cpp using #include "Libr.cpp".
View knows that the library exist because in View.h I have #include "Doc.h".
So I have some code that use the library in Doc.pp and View.cpp.
But the problem is:
Doc.cpp OK
View.cpp: Link error LNK2019 (functions not finded when link: but no problems when compile)
So I tried to past #include "Libr.cpp" in View.cpp, and then:
Doc.cpp: Link error LNK2019
View.cpp OK
Damn!
And this appens only with some functions of the library, and strange thing is that this functions are very very similar to other functions that haven't got any problem!!
Can anybody help me??
(sorry for the long message)
Have a nice code day 
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#include "Libr.cpp" is wrong.
Include Libr.h in your Doc.h & include Doc.h in your Doc.cpp
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tuxyboy wrote: #include "Libr.cpp" is wrong.
is actually not wrong but poor way of programming.
-Prakash
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you need to add the lib file to the link tab in the project settings.
-Prakash
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Hi,
I had the same link error.
I feel the problem is inclusion of your header files(#include "Libr.h") in side the Doc.h.
Try to include the header files inside the .cpp files, not inside the .h files.
If you want exactly inside the .h file, then include inside of #define.
otherwise system will produce runtime error because of multiple inclution.
in your case you included "#include "Libr.h" inside your doc.h and doc.h is included inside view.h and etc.. try to avoid this and "#include "Libr.h" should be inside your doc.cpp
Dont include .cpp file. .h file will take care everythings of .cpp
best of luck,,
regards
Vallikumar A
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Sorry, but I prefere the simple use of #include.
I have good news:
In libr.h/.cpp there was a lot of inline functions,
well... I modify the files cutting that word and now everything is running.
But I want to use inline: I need it!!
So, do you know if it is possible that the linker doesn't like the keyword inline or if the use of 'inline' could give this error??
Thaks
Have a nice code day
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