Re: Extracting Unicode Data - C / C++ / MFC Discussion Boards

HaraldS8-Jun-05 18:41

8-Jun-05 18:41

I have a fairly complex application, to which I am adding socket communications for data logging. I have implemented an approach that uses a single winsock socket in a thread, and it's working ok. But it does not have the full functionality needed.

I designed the next implementation using CSocket and ran into a weird problem on actual coding. Even a simple declaration of a socket followed by a CSocket.Create(PORT, SOCK_STREAM) returns an error and fails. This is at initialization, where not much has yet happened.

It compiles fine under both VC++ 6SP5 and .net 2003. Doing this in a standalone application stump works ok, of course.

What could be going on here? I have been wasting more than half a day on this. Doing what I plan with winsock would take a lot more time.

Thanks for any hints,

-- Harald

Re: CSocket.Create failure

ThatsAlok8-Jun-05 18:55

ThatsAlok

8-Jun-05 18:55

HaraldS wrote:
CSocket.Create(PORT, SOCK_STREAM) returns an error and fails

could you please tell me the error it return Smile | :)

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: CSocket.Create failure

Nilesh K.8-Jun-05 19:15

Nilesh K.

8-Jun-05 19:15

HaraldS wrote:
CSocket.Create(PORT, SOCK_STREAM) returns an error and fails

To have better description of errors use FormatMessage along with GetLastError.
Here[^] is the usage sample.

<bold>- Nilesh
<italics>"Reading made Don Quixote a gentleman. Believing what he read made him mad" -George Bernard Shaw

Re: CSocket.Create failure

S. Senthil Kumar8-Jun-05 20:20

S. Senthil Kumar

8-Jun-05 20:20

Are you creating the CSocket class on a thread NOT created using AfxBeginThread? I've heard that that might lead to problems.

Regards
Senthil
_____________________________
My Blog | My Articles | WinMacro

Re: CSocket.Create failure

GDavy8-Jun-05 23:22

GDavy

8-Jun-05 23:22

call AfxSocketInit() in the initinstance of your application...

Greetings,
Davy

Re: CSocket.Create failure

HaraldS9-Jun-05 4:43

HaraldS

9-Jun-05 4:43

AfxSocketInit() was it! Worked first time it was added. Not sure, why the online CSocket documentation did not make it clear that it was needed.

Re other responses: I am using AfxThread, and the error code was not listed, since I could not find any reference to it ANYWHERE. But given MS docs that might not mean anything.

Thanks all for the response.

-- Harald

Extracting Unicode Data

Veera Raghavendra8-Jun-05 18:35

Veera Raghavendra

8-Jun-05 18:35

hai..

Thanks for u r quick response. The main problem is when i extract the unicode data it comming in ??????? symbols. How to extract this unicode data.Please let me know.

Thanking you,
Rose | [Rose]

E.Veera Raghavendra.

e.veera raghavendra

Re: Extracting Unicode Data

GDavy8-Jun-05 23:05

GDavy

8-Jun-05 23:05

Ok reading your previous post I understand you want to convert from Unicode to Ascii string.
Having "????" in your resulting string is probably because you converted to a codepage that does not support the characters in the unicode string.
Also make sure the font you use to display the converted text support the converted characters. That could also be the problem

Greetings,
Davy

Re: Extracting Unicode Data

Veera Raghavendra8-Jun-05 23:32

Veera Raghavendra

8-Jun-05 23:32

Unicode data is appearing on the application(MSWORD). When i extract throught the program it is giving in ????? symbols. Even i have installed "static libary for unicode" and "shared library for unicode". Please let me know.

Best Regards
Rose | [Rose]

E.Veera Raghavendra.

e.veera raghavendra

Re: Extracting Unicode Data

Blake Miller9-Jun-05 6:42

Blake Miller

9-Jun-05 6:42

You might still need to convert the string data within your program from UNICODE text data to ASCII text data using a function like WideCharToMultiByte

Re: Extracting Unicode Data

Veera Raghavendra9-Jun-05 18:28

Veera Raghavendra

9-Jun-05 18:28

I have tried with WideCharToMultiByte, It is not working.

wchar_t *unicodeStr;

int j=::WideCharToMultiByte(CP_ACP,WC_SEPCHARS,(const unsigned short *)cstContent.GetBuffer(0),-1,(char *)unicodeStr,0,NULL,NULL);

CString strj;
strj.Format("%d",j);
AfxMessageBox(strj);

if(j)
{
ToIntercedingModule(cstContent.GetBuffer(0),PURGE_SPEECH,cstFont.GetBuffer(0),"MSWord<<edit>>", false);
}

I have written above code. It's returning 0.

Thanking you
Rose | [Rose]

E.Veera Raghavendra.

e.veera raghavendra

Re: Extracting Unicode Data

Blake Miller10-Jun-05 4:21

Blake Miller

10-Jun-05 4:21

WideCharToMultiByte converts from UNICODE to MultiByte.
I think you got the parameters all jumbled up in the sample function call you posted.

Let us assume you have a buffer of text in UNICODE that you want to convert to MultiByte

char msMultiByteStringBuffer[1024];

WideCharToMultiByte(CP_THREAD_ACP, 0, wsUnicodeString, -1, msMultiByteStringBuffer,
sizeof(msMultiByteStringBuffer), NULL, NULL);

You can dynamically allocate the multibyte buffer if necessary, by obtaining the number of characters required by making a blank call:

int iNumCharsRequired = WideCharToMultiByte(CP_THREAD_ACP, 0, wsUnicodeString, -1, msMultiByteStringBuffer, 0, NULL, NULL);

Re: Extracting Unicode Data

Veera Raghavendra10-Jun-05 4:43

Veera Raghavendra

10-Jun-05 4:43

The above code is also not working. I am greatful to u r response.My unicode data is available in CString variable. So, i copied that data into *char variable. In WideCharToMultiByte(..) function when i gave the *char variable it is responding with the following error

WideCharToMultiByte' : cannot convert parameter 3 from 'char *' to 'const unsigned short *' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast

so i have changed that (unsigned short *) variable.Is there any problem with this code. Please let me know.

Thanking you,
Rose | [Rose]

E.Veera Raghavendra.

e.veera raghavendra

Re: Extracting Unicode Data

Blake Miller10-Jun-05 5:48

Blake Miller

10-Jun-05 5:48

The CString buffer containing the UNICODE text must go where the UNICODE is required, and you need a separate buffer for the converted text. When a function wants to see LPBYTE or UINT* and you knwo it is supposed to be a charcater buffer, you can always put (LPBYTE) in front of the variable or put (UINT*)

For example, if I have char szBuffer[1024];

and some function expects an 'unsigned short *', you could do this:

(unsigned short *)szBuffer

From your explanation, I am concerned that you continue to place your UNICODE text where the MultiByte buffer should go and vice versa.

Re: Extracting Unicode Data

Veera Raghavendra10-Jun-05 16:36

Veera Raghavendra

10-Jun-05 16:36

I did same type of covertion before, even it was displaying the characters as ?????. And I have tried another way also. I have read one by one character from the buffer and changed to hexadecimal and deciaml values. All the character values aresame(hexadecimal--3f, Decimal--63). What i am thinking is VC++ is not able to extract that data.I have tried with IsUnicodeText(...) function. That's also failured.

Thankign you,
Rose | [Rose]

E.Veera Raghavendra.

Sync Scrolling in CListCtrl's...

Ian Bowler8-Jun-05 18:28

Ian Bowler

8-Jun-05 18:28

I need to sync the horizontal scrolling of two CListCtrl's. However, I don't want a scroll-bar to show up in one of the CListCtrl's. I've been trying to get it to work for several hours and I'm running out of ideas.

Any ideas out there? Remember, I can't have the scroll-bar showing up in one of the CListCtrl's.

Thanks!

-Ian

How to capture a still image using directshow

Member 11532388-Jun-05 17:42

Member 1153238

8-Jun-05 17:42

;P:->Dear all,
I've tested the method of the ISampleGrabber filter in Directshow,and also I accomplished Extracting bitmaps from a virtual camera.Now I just wonder whether the ISampleGrabber filter can be used in mobile devices? eg:Smartphone?
Thanks a lot and looking forward to your reply~

siwlyfe

Unicode Convertion

Veera Raghavendra8-Jun-05 17:07

Veera Raghavendra

8-Jun-05 17:07

Hai..

I have problem with unicode data. Please let me know any body having idea about converting unicode to Ascii.

Thanking you..
Rose | [Rose]

E.Veera Raghavendra.

e.veera raghavendra

Re: Unicode Convertion

Member 11532388-Jun-05 17:45

Member 1153238

8-Jun-05 17:45

Yes,I want it too.Pls list out the methods of Unicode data type convertion if any body knows.Thanks a lot and best wishes

siwlyfe

Re: Unicode Convertion

ThatsAlok8-Jun-05 18:14

ThatsAlok

8-Jun-05 18:14

Have a look here

http://www.codeproject.com/script/comments/forums.asp?msg=1130580&forumid=1647#xx1130580xx[^]

and here

http://www.codeproject.com/script/comments/forums.asp?msg=1130590&forumid=1647#xx1130590xx[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Unicode Convertion

Jack Puppy8-Jun-05 17:58

Jack Puppy

8-Jun-05 17:58

Win32:

WideCharToMultiByte => Unicode to ANSI
MultiByteToWideChar => ANSI to Unicode

If you're using MFC 7.1:

CStringW strUnicode = L"Blah";
CStringA strANSI(strUnicode);

CStringW = Unicode string
CStringA = ANSI string

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

Re: Unicode Convertion

ThatsAlok8-Jun-05 18:13

ThatsAlok

8-Jun-05 18:13

In Continuation with Mr Jack :-

1. wcstombs(convert wide character to Multibyte character),mbstowcs (just reverse of previous)

2. String converion MACROS W2T,T2BSTR etc, have a look here for complete list

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vclib/html/_atl_string_conversion_macros.asp[^]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Unicode Convertion

Veera Raghavendra8-Jun-05 18:34

Veera Raghavendra

8-Jun-05 18:34

E.Veera Raghavendra.

e.veera raghavendra

Ignore ASSERT Dialog?

Blue-Bird8-Jun-05 16:55

Blue-Bird

8-Jun-05 16:55

I Want to ignore ASSERT Dialog on DEBUG mode using try ~ catch.

How can i do it? Confused | :confused:

help me pelase...

And sorry for my little English.

thanks..

Re: Ignore ASSERT Dialog?

Christian Graus8-Jun-05 17:14

Christian Graus

8-Jun-05 17:14

You can't, they are different beasts. You can redefine the ASSERT macro, I suppose.

Christian Graus - Microsoft MVP - C++

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.