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Hello folks!
Am looking for a way to do this: i have a rectangle that specifies the available space for some text. I want to display as much as possible of this text. What i mean is, if the text fits nicely in the rectangle, it should be displayed as usual, centered with wordbreaks as needed (DrawText with DT_WORDBREAK | DT_CENTER). However, when the specified rectangle is too small, the text doesn't fit into it even with wordbreaks (e.g. there are a few long words) then i'd like the text to e.g wrap around at positions where the long words would "hang out" of the rectangle.
First i tried DT_CALCRECT with DrawText to check if the text fits, if yes then i simply draw it with DrawText and go on, if not, then i tokenized the string using space as separator/delimiter. Then i iterated trough the words and checked the widths of the words and if they were too wide then i'd find the character inside the word which would hang out of the rectange and inserted a space. After this, i used DrawText again with DT_WORDBREAK to display the string. This works reasonably well but not well enough because it produces things like this:
(the text is "This is somewhat longer" and there's space for 3 lines)
---------
|This is|
|somewha|
| t | <- a whole word is lost ("longer")
---------I guess one alternative i can go for is wrapping the whole string
---------
|This is|
|somewha|
|t longe| <- i see more of "longer" here
--------- but am not sure if doing this is the only/best way, and also i don't know how to wrap text aside of writing it character by character myself checking before each letter if it would hang out or not and "linefeeding" as needed + handling spaces specially (something like not display them if they are at a linebreak position). I have a faint memory from the good old times that something like DT_WORDWRAP or somesuch existed but i see no trace of it now so it's either gone or it never had existed at all and i have a few bit errors in my memory.
Any suggestions before i go into implementing the char-by-char thing? There should be a better way (i don't wish to go into dynamically selecting font sizes, let us assume the font is fixed)...
P.S: Am using GDI (CDC::DrawText and friends...)
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <
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Don't know who downvoted you, but have my 5 in compensation. It's an interesting question (even if the answer is going to be WAAAAY too long). I suspect you're going to be forced into "measure each char and draw it somewhere" stuff.
Cheers,
Peter
Software rusts. Simon Stephenson, ca 1994.
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Thank you very much. I don't know what the problem is with my question that it needed a downvote.
Anyways, for now i went with the following aproach: if the text doesn't fit, i go char by char, calculate sizes, when i hit the "line-end" then i insert a linefeed ('\n') in the string and after i hit the end of the string, i output it with DrawText without DT_WORDBREAK.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <
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Isn't this why we have scrollbars?
Just say 'NO' to evaluated arguments for diadic functions! Ash
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No, this is why we have larger monitors. 
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Thanks for the suggestion but not in this situation. Basicly what i have is (something similar to) a "grid" of rectangular cells, each cell displaying textual information for the user, the user can resize this "grid", and i would like to present him as much information as i can when he "shrinks" the whole thing. Displaying a scrollbar wouldn'd be really usefull here i guess. The user will have tooltips to aid him but the more he can determine by just looking at the thing the better it should be.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <
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Hi,
Just started using the boost libraries to do asynch i/o and not sure if this is the best forum for this but will post anyway.
First question I am specifying a delimiter character in the call but when I display what I get back it looks like it is also implicitly returning when a LF \'n' char is reached even though this isn't my delimiter. Could this method have default delimiters that need to be managed? I haven't seen this in the documentation so far.
Secondly, the second argument in the call is a "boost::asio::streambuf b". What's the best way to extract the message from the buffer and put it into an std::string?
I've played around with:
size_t n = b.size();
b.commit(n);
std::istream is(&b);
std::string s;
is >> s;
But now sure what's going on under the covers here.
Any help would be appreciated.
Thanks
ak
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Hi,
I have owner draw button control and setfont to 20. But I am getting font height using GetTextMetrics() but I am not getting 20 anywhere, I am getting 16 each time.
HDC dc= ::GetDC(this->m_hWnd);
TEXTMETRIC tm;
::GetTextMetrics(dc,&tm);
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It would be more useful if you posted the code where you select the font.
Just say 'NO' to evaluated arguments for diadic functions! Ash
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m_font.CreateFont(20,0,0,0,FW_BOLD,0,0,0,0,0,0,0,0,_T("Arial"));
SetFont(&m_font);
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Does this code actually change the font of the button control?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Man who follows car will be exhausted." - Confucius
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The value above does not equate to a 20 point font, you must first convert it to device units as described here[^].
Just say 'NO' to evaluated arguments for diadic functions! Ash
modified on Wednesday, November 17, 2010 3:18 PM
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Hi all,
i m using this function
CString CSMTP::get_response()
{
try
{
char buf[240];
sock_error=WSAGetLastError();
if(sock_error!=0)
{
if(sock_error==10048)
sock_str = "10048*Address already in use";
else if(sock_error==10049)
sock_str = "10049*Cannot assign requested address";
else if(sock_error==10050)
sock_str = "10050*Network is down";
else if(sock_error==10051)
sock_str = "10051*Network is unreachable";
else if(sock_error==10060)
sock_str = "10060*Connection timed out";
else if(sock_error==10064)
sock_str = "10064*Host is down";
else if(sock_error==10061)
sock_str = "10061*Connection refused";
else if(sock_error==10054)
sock_str = "10054*Connection reset by peer";
else
{
sock_str.Format("%d",sock_error);
sock_str = sock_str + "*Socket Error";
}
return sock_str;
}
int res = recv(sock,buf,sizeof(buf),0);
if (res != SOCKET_ERROR)
{
buf[res] = 0;
}
sock_error=WSAGetLastError();
if(sock_error!=0)
{
if(sock_error==10048)
sock_str = "10048*Address already in use";
else if(sock_error==10049)
sock_str = "10049*Cannot assign requested address";
else if(sock_error==10050)
sock_str = "10050*Network is down";
else if(sock_error==10051)
sock_str = "10051*Network is unreachable";
else if(sock_error==10060)
sock_str = "10060*Connection timed out";
else if(sock_error==10064)
sock_str = "10064*Host is down";
else if(sock_error==10061)
sock_str = "10061*Connection refused";
else if(sock_error==10054)
sock_str = "10054*Connection reset by peer";
else
{
sock_str.Format("%d",sock_error);
sock_str = sock_str + "*Socket Error";
}
return sock_str;
}
else
{
return buf;
}
}
catch ( CInternetException* e )
{
e->Delete();
}
catch( CMemoryException* e )
{
e->Delete();
}
catch( CFileException* e )
{
e->Delete();
}
catch( CException* e )
{
e->Delete();
}
}
where i call this function its generate exception,please tell me what wrong with function.
its callstack is
ntdll.dll!7788ac0f()
[Frames below may be incorrect and/or missing, no symbols loaded for ntdll.dll]
ntdll.dll!7788a58b()
kernel32.dll!76623f01()
> Test.exe!free(void * pBlock=0x410f28f0) Line 110 C
Test.exe!CMemFile::Free(unsigned char * lpMem=0x410f28f0) Line 118 + 0x8 bytes C++
Test.exe!ATL::CStringData::Release() Line 113 C++
Test.exe!CSMTP::~CSMTP() Line 13 + 0x1c bytes C++
Test.exe!CSmtp_Mon_Thread::SmtpResponseThread(ATL::CStringT<char,StrTraitMFC<char,ATL::ChTraitsCRT<char> > > URL_Name="http://dezsredstva.ru", unsigned int Port=1091512576) Line 227 + 0x13 bytes C++
Test.exe!CSmtp_Mon_Thread::OnSmtpTimer(unsigned int idEvent=22610, long dwTime=11655606) Line 69 C++
Test.exe!CWinThread::DispatchThreadMessageEx(tagMSG * pMsg=0x093e7cf8) Line 771 C++
Test.exe!AfxInternalPreTranslateMessage(tagMSG * pMsg=0x093e7cf8) Line 227 + 0xd bytes C++
Test.exe!CWinThread::PreTranslateMessage(tagMSG * pMsg=0x093e7cf8) Line 777 + 0x8 bytes C++
Test.exe!AfxPreTranslateMessage(tagMSG * pMsg=0x093e7cf8) Line 255 C++
Test.exe!AfxInternalPumpMessage() Line 178 + 0xf bytes C++
Test.exe!CWinThread::Run() Line 629 + 0x7 bytes C++
Test.exe!_AfxThreadEntry(void * pParam=0x0023f25c) Line 126 C++
Test.exe!_callthreadstartex() Line 348 + 0x6 bytes C
Test.exe!_threadstartex(void * ptd=0x02b2fcd8) Line 326 + 0x5 bytes C
kernel32.dll!7662eccb()
ntdll.dll!778dd24d()
ntdll.dll!778dd45f()
thanks in advance
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The code you showed (CSMTP::get_response) isn't in the stack you gave!
Steve
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Please, don't repost your question. This is considered rude.
Besides, you have been given advice to use your debugger, did you already tried that ? If you are in a hurry, why don't you try to solve the problem instead of waiting that people give you the complete solution.
We've been giving you everything that you need to fix your problem. It seems you are not really willing to learn as your username would suggest it...
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ok sir
actully i m not find out the exact problem by call stack window.
i dont know how to use it.
so...
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When the crash occurs, you can see the call stack window and double click on lines in the call stack. This will bring you to the line in question. Now, try to locate the crash somewhere in your code and put breakpoints (F9) before the line which crashes. Then you can step into the code and inspect the variables which are causing problems (here it seems it is a CString which seems corrupted). For instance you can verify that the strings are properly formated and valid pointers.
You can't expect doing any serious software development without using a debugger. When there's a crash like that, your first reflex is to first try to see which information you can extract with the debugger. Then, if you still didn't fix your problem and are still stuck, you can come and ask a question by providing the information from the debugger.
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Why are you returning the dead (i.e. out-of scope) variable buf? 
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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CPallini wrote: returning the dead
sounds like a horror movie from the "old times", "Return of the dead variable", now in color! You could say it's a coding horror movie.
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <
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Code-o-mat wrote: sounds like a horror movie from the "old times", "Return of the dead variable", now in color! You could say it's a coding horror movie
More like a 'code horror' of the new generations... 
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Tam dam daaaam!!!
> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Leela: Fry, you're wasting your life sitting in front of that TV. You need to get out and see the real world.
Fry: But this is HDTV. It's got better resolution than the real world <
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His function signature is CString CSMTP::get_response() so the return statement will construct a CString with buf and return it. The problem is not in that construct, it was that buf was not null terminated as expected by the constructor. See previous thread for more
Edit: Just seen that the OP code now initializes buf to empty, so the problem is elsewhere, probably around a call to CMemFile::Free().
cheers,
AR
When the wise (person) points at the moon the fool looks at the finger (Chinese proverb)
modified on Wednesday, November 17, 2010 11:02 AM
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Yep, you're right (I've overlooked the signature).
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke
[My articles]
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Hi,
Please post and introduce yourself in General Indian forum[^]
In GIT,we would be able to guide with basic guidelines about posting in Codeprojects.
cheers,
Super
------------------------------------------
Too much of good is bad,mix some evil in it
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Why not set a breakpoint on the first statement in this function and then use the debugger to single-step through the code?
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"Man who follows car will be exhausted." - Confucius
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