C / C++ / MFC

8-Jan-06 21:26

By this question, i clearly mean to say that "My application needs to be Unicode-Aware". Just adding the 'UNICODE' directive is enough? (I did that but when I pasted unicode text in one edit box of my app, it showed ??? and not the unicode text)

What are the necessary steps (Linker directives, etc) that I should take to make sure that my app works fine with Unicode and is completely Unicode-Aware?

I know I should use all "W" functions and should place literal strings within _T.

Any pointers or help in this direction is highly appreciated.

Thanks and regards,
Aljechin Alexander

Prakash Nadar8-Jan-06 21:29

8-Jan-06 21:29

Aljechin wrote:
I pasted unicode text in one edit box of my app, it showed ??? and not the unicode text

did you install appropriate language packs in your machine?

-Prakash

<color>Aljechin 8-Jan-06 21:35

8-Jan-06 21:35

Without installing appropriate language packs how do I take Unicode text from some other app to paste here?

Prakash Nadar8-Jan-06 21:52

8-Jan-06 21:52

add _UNICODE to project settings.

-Prakash

<color>Aljechin 8-Jan-06 22:26

8-Jan-06 22:26

Mr.Prakash wrote:
add _UNICODE to project settings.

5/5

That's it dude! Heartfelt Thanks.

Best Regards and Thanks,
Aljechin Alexander

sunit58-Jan-06 23:06

sunit5

8-Jan-06 23:06

also add UNICODE

never say die

<color>Aljechin 8-Jan-06 23:23

8-Jan-06 23:23

Sir,

What is the significance of adding UNICODE / _UNICODE? It's actually now I removed _UNICODE and added UNICODE, the app still understands unicode. I kept both UNICODE AND _UNICODE, the app still works with unicode. WTF | :WTF:

I don't understand this. Can someone explain me in detail? I went through The msdn documentation regarding the same, but didn't get it. (In all the cases I had to define an entry point by myself i.e. entry:wBlah, otherwise the compiler gave a bitter error complaining _WinMain@16 is an unresolved external symbol!)

Thanks,
Aljechin Alexander

Rose | [Rose]

toxcct8-Jan-06 23:30

toxcct

8-Jan-06 23:30

the two macros exist, but not manages the same places. so, the best way to handle unicode fully is to define the 2 macros this way (in stdafx.h for instance) :

<font color=green>//stdafx.h file
// used for precompiled headers...</font>
 
<font color=blue>#define</font> _UNICODE
<font color=blue>#define</font> UNICODE
 
<font color=green>// the other includes...</font>

TOXCCT >>> GEII power
[toxcct][VisualCalc 2.20][VisualCalc 3.0]

-- modified at 5:54 Monday 9th January, 2006

Prakash Nadar8-Jan-06 23:43

8-Jan-06 23:43

yes and this need to put preferablely in stdafx.h or any common header file that is included in all the files so that the project is compiled uniformly or add it to the project settings.

-Prakash

-- modified at 5:46 Monday 9th January, 2006

sunit58-Jan-06 23:54

sunit5

8-Jan-06 23:54

_UNICODE for C like wsprintf

UNICODE for Microsoft Function/API

never say die

David Crow9-Jan-06 3:19

David Crow

9-Jan-06 3:19

Aljechin wrote:
Just adding the 'UNICODE' directive is enough?

It's best to define both UNICODE and _UNICODE.

Aljechin wrote:
I know I should use all "W" functions...

It might be easier to just use the macros defined in tchar.h like _tcscpy() and _tcslen().

Aljechin wrote:
I know I should...place literal strings within _T.

Correct.

Aljechin wrote:
...but when I pasted unicode text in one edit box of my app, it showed ??? and not the unicode text)...

Did you assign a Unicode font to the edit control?

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

<color>Aljechin 9-Jan-06 20:22

9-Jan-06 20:22

Sir,
I will tell you in sequence what happened. First I added 'UNICODE' ( in project-settings ). The app was unaware of unicode (displayed ???). I added _UNICODE and suddenly the compiler gave me a bitter error that _WinMain@16 is an unresolved external symbol. I had to give my entry, i.e. entry:"wWinMainCRTStartup". I really dont know why I had to do this, but after this only it compiled, and the program worked with unicode. I did not assign any unicode font also, to the edit control. What is the significance of this "wWinMainCRTStartup"? and is that if i assign a unicode font to the edit control it can still go ahead to be unicode aware without defining _UNICODE and my own entry point "wWinMaainblahblah"?

Thanks and Regards,
Aljechin Alexander

Rose | [Rose]

RTF to plain text problem

David Crow10-Jan-06 1:53

David Crow

10-Jan-06 1:53

Aljechin wrote:
What is the significance of this "wWinMainCRTStartup"?

It's the entry point for Unicode MFC applications.

Aljechin wrote:
...if i assign a unicode font to the edit control it can still go ahead to be unicode aware without defining _UNICODE and my own entry point "wWinMaainblahblah"?

The best way to answer "What happens if..." questions is to just try it and see.

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb

Maciej Lisiewski8-Jan-06 20:46

Maciej Lisiewski

8-Jan-06 20:46

Is there a way to convert RTF string to plain text?

Putting a string into CRichEditCtrl using Callback StreamIn and then getting it out using CRichEditCtrl::GetWindowText seems overly complicated and doesn't work in my case, since GetWindowText returns null unless you've displayed the string (UpdateData(FALSE)) and it doesn't support unicode (or at least I've been unable to get it working).
Just stripping RTF codes wouln't do since unicode rtf uses some strange character encoding.

If you know how to do it I'd really appreciate. (I think I've read something about coping it into clipboard and then getting plain text, but can't find it..)

Maciej Lisiewski

Neville Franks8-Jan-06 21:35

Neville Franks

8-Jan-06 21:35

Maciej Lisiewski wrote:
(I think I've read something about coping it into clipboard and then getting plain text, but can't find it..

Copy it to the Clipboard then get the CF_TEXT(?) format and use that. Should work.

Neville Franks, Author of Surfulater www.surfulater.com "Save what you Surf" and ED for Windows www.getsoft.com

Maciej Lisiewski9-Jan-06 0:05

Maciej Lisiewski

9-Jan-06 0:05

Every bit of code I found/wrote in order to put CStringW into clipboard caused program crash (no exception thrown).
.. help?

-- modified at 8:25 Monday 9th January, 2006

S Douglas8-Jan-06 21:55

S Douglas

8-Jan-06 21:55

Maciej Lisiewski wrote:
Is there a way to convert RTF string to plain text?

After you stream it into the Rich Edit control you can always stream it out.

Reference:
CRichEditCtrl::StreamOut[^]

ZeePain! wrote:
This seems like one of those programs that started small, grew incrementally, building internal pressure, and finally barfed all over its source code sneakers. Or something.

thedailywtf.com[^]

Maciej Lisiewski9-Jan-06 0:15

Maciej Lisiewski

9-Jan-06 0:15

For some reason it doesn't work.
I'm using this StreamIn/StreamOut:
<code>
static DWORD CALLBACK StreamOut( DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb )
{

// Setting up temp buffer
char* buff;
buff = new char[ cb + 1 ];
buff[ cb ] = ( char ) 0;
strncpy( buff, ( LPCSTR ) pbBuff, cb );
int max = strlen( buff );

CString* str = ( CString* ) dwCookie;

#ifdef _UNICODE

// We want to convert the buff to wide chars
int length = ::MultiByteToWideChar( CP_UTF8, 0, buff, max, NULL, 0 );
if( length )
{
TCHAR* wBuff = new TCHAR[ length ];
::MultiByteToWideChar( CP_UTF8, 0, buff, max, wBuff, length );

*str += wBuff;
delete[] wBuff;
}

#else

*str += buff;

#endif

delete[] buff;
*pcb = max;

return 0;

}

static DWORD CALLBACK StreamIn( DWORD dwCookie, LPBYTE pbBuff, LONG cb, LONG *pcb )
{

CString* str = ( ( CString* ) dwCookie );

#ifdef _UNICODE

// Unicode is only supported for SF_TEXT, so we need
// to convert
LPCTSTR ptr = str->GetBuffer( (*str).GetLength() );
int length = ::WideCharToMultiByte( CP_UTF8, 0, ptr, -1, NULL, 0, NULL, NULL );
int max = min( cb, length );
if( length )
{
char* buff = new char[ length ];
::WideCharToMultiByte( CP_UTF8, 0, ptr, -1, buff, length + 1, NULL, NULL );
strncpy( (LPSTR) pbBuff, buff, max );
delete[] buff;
}
str->ReleaseBuffer();

#else

int max = min( cb, (*str).GetLength() );
strncpy( ( LPSTR ) pbBuff, (*str) , max );

#endif

(*str) = (*str).Right( (*str).GetLength() - max );

*pcb = max;

return 0;

}
</code>

If I StreamIn with SF_RTF and StreamOut with SF_TEXT I end up with an empty string or one far too long, but containing the desired data.

-- modified at 8:25 Monday 9th January, 2006

[Message Deleted]

sanjukta1238-Jan-06 19:45

sanjukta123

8-Jan-06 19:45

[Message Deleted]

Re: Windows Media Player

<color>Aljechin 8-Jan-06 23:26

Subclassing CView twice with MFC

8-Jan-06 23:26

Is it allowed to post soapbox(kind of) material here?

flip8-Jan-06 19:43

flip

8-Jan-06 19:43

Hi,

I have a OpenGlView extended from a CView. I then extend from OpenGLView to get e.g. a TexturedSceneOpenGLView.
However when I do this only the OpenGLView is constructed and the OnPaint and other handlers for TexturedSceneOpenGLView are not called.

Does anyone know how I can make this work or offer any alternative suggestions.

Kind Regards,

flip

Re: Subclassing CView twice with MFC

Cedric Moonen8-Jan-06 20:54

Cedric Moonen

8-Jan-06 20:54

I don't understand exactly what your problem is... So you have a OpenGLView class that inherits from CView. Then, you have another class (TexturedSceneOpenGLView) that inherits from OpenGLView ? Is that right ?

And, what is exactly the problem ? Can you post some code ?

Re: Subclassing CView twice with MFC

Prakash Nadar8-Jan-06 22:20