C / C++ / MFC

alex.barylski10-Jan-02 13:17

alex.barylski

10-Jan-02 13:17

You could probably use the RichEdit however using the MSHTML editor would be easier and have more fetures by default. I think this is the same COM object that outlook express uses. I'm writting a editor as well, however i've recently decided to settle for non-wysiwyg. Notepad, but syntax highlighting. quick loads on a 266 are everything to me

Check out the following url for more details.

http://msdn.microsoft.com/workshop/browser/editing/activeeditor.asp?frame=true

hope i typed that right

ciao

"An expert is someone who has made all the mistakes in thier field" - Niels Bohr

James R. Twine11-Jan-02 6:13

James R. Twine

11-Jan-02 6:13

Matt Newman wrote:
am writing an WYSISWYG HTML editor and was wondering were I should start

   Here is a link to information on the DHTML Editing Component SDK, which may or may not be what the other poster was talking about: http://msdn.microsoft.com/archive/default.asp?url=/ARCHIVE/en-us/dnaredcom/html/edcomdownload.asp

   The SDK itself can be downloaded at: http://msdn.microsoft.com/ARCHIVE/en-us/dnaredcom/html/dhedsdk.exe, and it includes a few sample applications, including an rather functional MFC based WYSIWYG editor.  (I am not sure what "WYSISWYG" means, but WYSIWYG is "What You See Is What You Get".)

   Peace!

-=- James.

Matt Newman11-Jan-02 15:14

Matt Newman

11-Jan-02 15:14

James R. Twine wrote:
I am not sure what "WYSISWYG" means, but WYSIWYG is "What You See Is What You Get"

I meant WYSIWYG

- Suspicious | :suss:

Matt Newman Suspicious | :suss:

-Sonork ID: 100.11179:BestSnowman

James R. Twine11-Jan-02 18:56

James R. Twine

11-Jan-02 18:56

Matt Newman wrote:
I meant WYSIWYG

In that case, the DHTML Editing Component SDK is just what you are looking for: I have used it before to implement a few HTML editors.

Peace!

-=- James.

Multithreading and the AfxBeginThread(..) func

Matt Newman12-Jan-02 4:59

Matt Newman

12-Jan-02 4:59

Thanks. This is a big help!

- Suspicious | :suss:

Matt Newman Suspicious | :suss:

-Sonork ID: 100.11179:BestSnowman

Rickard Andersson²⁰10-Jan-02 10:36

Rickard Andersson²⁰

10-Jan-02 10:36

I want to know how it works with multithreading. When I call AfxBeginThread or _beginthread and the function that I have putted as a parameter in one of them. Is one of those functions calling the function that is specified in AfxBeginThread or _beginthread called and then return to next code after calling AfxBeg.. or _beginth.. while the function parameter still in use? I can't explain but look here:

void Afunction()
{
AfxBeginThread(ThreadFunc, ...)

// Now try do something else
RasDial(); // Perhaps a bad example but..
}

Now what I tried to explain: When now AfxBeginthread is called and the ThreadFunc is called, imagine that it's a very big function that checking the harddrive for mp3 files and then rename all of them and then try to move them to another harddrive, is this procedure running at the same time that RasDial is called or whatever code anyway that comes after AfxBeginThread??

Where an I read about multithreading??

------------------------------
©0d3 ©®4©k3® - That's me! Smile | :)

------------------------------

Joaquín M López Muñoz10-Jan-02 11:00

10-Jan-02 11:00

Well, a thread is like a microprogram that runs separately from the main thread (though accessing the same global variables). From the point of view of Afunction, AfxBeginThread(ThreadFunc, ...) starts another thread and returns immediately (i.e. whitout waiting for ThreadFunc to complete), going then to RasDial. So, from the user's (and the programmer's) perspective both routines (TreadFunc and RasDial) are executed in parallel --that's the whole point of multithreading.
The issue of different threads accessing global variables simultaneously can cause a lot of problems that you must work hard in order to prevent. When programming in a single-threaded environment, you implicitly assume that your variables remain unchanged while you're not dealing whith them --now this is no longer true, and a rich theory about simultaneous access to shared resources has been devised to help you design error-free multithreaded programs. This theory includes concepts as synchronization (waiting for completion of another thread's piece of code), exclusive access (methods to reclaim and grant access to some resource to one thread at a time) and more.
You can find several tutorials about multithreading on the net, just spend some minutes with your search engine to locate lots of them. The concepts underlying multithreading are rather platform-independent, so a good tutorial on multithreading in, say, Java will be worth reading tough you're targeting MFC. As a starting point, here's MSDN article Multithreading Tasks.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Rickard Andersson²⁰10-Jan-02 11:42

Rickard Andersson²⁰

10-Jan-02 11:42

Once upon a time I was a true ProgrammersHeaven.com visitor and member. But when I ran over CodeProject.com my life changed!!

Please let CodeProject.com be alive for ever!!

Every message that I've sent to this message board has always been answerd, so what?
Of course it will!?
Yeah, but the answer is always an answer that every beginner/advance or what ever programmer can understand!!

THANK YOU CodeProject.com and all VERY good buddies here on the message board!!!!

I realy had to tell ya this, dude!
Because I mean every word! Not even CodeGuru takes the first place!!

Rose | [Rose]

------------------------------

Nish Nishant10-Jan-02 16:24

Nish Nishant

10-Jan-02 16:24

LOL

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

wierd debug / release error...

Rickard Andersson²⁰10-Jan-02 20:53

Rickard Andersson²⁰

10-Jan-02 20:53

------------------------------

l a u r e n10-Jan-02 9:22

10-Jan-02 9:22

ok ... i have a piece of code that does the following:

<br />
_stprintf(szValue,_T("%.2f"),pAFlows[idx].price);<br />
pApp->DoCommas(szValue);<br />
m_grid.QuickSetText(7,idx,szValue);<br />

the DoCommas() function simply puts commas in the number string to separate thousands etc

the code works in debug builds but in release builds no decimals show up and i am totally baffled

a typical value would be 137.3 and the string buffer is long enough

any clues???

Confused | :confused:

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Joaquín M López Muñoz10-Jan-02 9:26

10-Jan-02 9:26

If you could post the code for DoCommas that'd be of invaluable help.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

l a u r e n10-Jan-02 9:30

10-Jan-02 9:30

hi again

here is the code for DoCommas() but as i said it works in debug build just not release build ... or at least not all release builds on all machines

<br />
//----------------------------------------------------------------------<br />
// formatting routines<br />
//----------------------------------------------------------------------<br />
bool CBfecApp::DoCommas (_TCHAR *szNumber) <br />
{<br />
	int		idx;<br />
	int		nIntegerLen;<br />
	int		commas,leading;<br />
	_TCHAR	*szP = NULL;<br />
	_TCHAR	szDecimals[10];<br />
	_TCHAR	szInteger[30];<br />
<br />
<br />
	if (szNumber[0] == '-')<br />
		szNumber++;<br />
<br />
	_tcscpy(szInteger,szNumber);<br />
<br />
	// split number first<br />
	if ((szP = _tcschr(szInteger,'.')) != NULL){<br />
		_tcscpy(szDecimals,szP);<br />
		*szP = (int)0;<br />
	}<br />
<br />
	nIntegerLen = _tcslen(szInteger);<br />
	if (nIntegerLen < 4)<br />
		return true;<br />
<br />
	commas = (nIntegerLen - 1) / 3;<br />
	leading = nIntegerLen - (commas * 3);<br />
<br />
	szNumber[leading] = (int)0;<br />
<br />
	for (idx = 0; idx < commas; idx++){<br />
		_tcscat(szNumber,_T(","));<br />
		_tcsncat(szNumber,szInteger + leading,3);<br />
		leading += 3;<br />
	}<br />
<br />
	if (szP != NULL)<br />
		_tcscat(szNumber,szDecimals);<br />
<br />
	return true;<br />
}<br />

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Joaquín M López Muñoz10-Jan-02 9:41

10-Jan-02 9:41

Uhmmm... Could you make sure that macros UNICODE and _UNICODE are both correctly defined (if doing a Unicode release)?

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

l a u r e n10-Jan-02 9:46

10-Jan-02 9:46

they are

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Ernest Laurentin10-Jan-02 10:49

Ernest Laurentin

10-Jan-02 10:49

Try using TCHAR and not _TCHAR

- God bless the World

Tim Smith10-Jan-02 9:57

Tim Smith

10-Jan-02 9:57

I tried this code in a test program, it works just fine in release, debug, and UNICODE.

Tim Smith
Descartes Systems Sciences, Inc.

l a u r e n10-Jan-02 9:58

10-Jan-02 9:58

is there some wierd setting on machines that causes data to come from sql7 without decimals sometimes?

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Joaquín M López Muñoz10-Jan-02 10:08

10-Jan-02 10:08

Well if it's possible you might want to run this test: comment the DoCommas line out and check if still some numbers appear without decimals. This may shed some light.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

l a u r e n10-Jan-02 10:55

10-Jan-02 10:55

i tried and it doesnt
Frown | :(

---
"every year we invent better idiot proof systems and every year they invent better idiots ... and the linux zealots still aren't being sterilized"

Joaquín M López Muñoz10-Jan-02 11:13

10-Jan-02 11:13

Hey Lauren, we're not having luck today Wink | ;)

It's really beating me. Maybe you can try different tests to isolate the guilty part of the code. Some ideas:

Comment out the first line and insert something fixed like _tcscpy(szValue,_T("137.3"))
Maybe the grid (which looks like the Dundas grid, right?) is doing some extra formatting to the text: to rule this out, you can output the results after DoCommas with, say, a line like MessageBox(NULL,szValue,_T(""),MB_OK)

Apart from this, I'm afraid I'm running out of ideas. Good luck with your bug hunting!

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo