Is there anyway of looking at the code that initialises a DLL - C / C++ / MFC Discussion Boards

ugur_basak19-Jun-05 22:17

19-Jun-05 22:17

I want to show CToolTipCtrl object when user enters invalid character. Actually i want to use that class when i want. But i cant find a solution. Is there anyway to override that functionality.

I use several methods, but cant do what i want.

I use ShowWindow like funtctions, but they just show and disappear. They dont even there for a few miliseconds Smile | :)

Being mortal is what makes impossible possible.

Re: How to display tool tips...

narendra_ b19-Jun-05 23:17

narendra_ b

19-Jun-05 23:17

i)declare CToolTipCtrl in ur class
like CToolTipCtrl m_ToolTipCtrl ;
ii) add the following code in constructor
TOOLINFO ti;
DWORD dwStyle = TTS_BALLOON;

m_ToolTipCtrl .Create(this, dwStyle);
m_ToolTipCtrl .FillInToolInfo(ti, this, 0);
ti.uFlags |= (TTF_TRACK |TTF_ABSOLUTE );
ti.lpszText = (LPTSTR)_T("Enter Valid Phone number");

m_ToolTipCtrl .SendMessage (TTM_ADDTOOL, 0,reinterpret_cast<lparam> (&ti));

iii) add the following code, where u want to show the tooltip

LPTSTR lpszMessage = _T("Enter Tooltip text here");
m_ToolTipCtrl.Activate(TRUE) ;
CToolInfo ti;
m_ToolTipCtrl.GetToolInfo(ti, this, 0);
ti.lpszText = lpszMessage;
m_ToolTipCtrl .SetToolInfo(&ti);

m_ToolTipCtrl .SendMessage (TTM_TRACKPOSITION, 0, MAKELPARAM(rect.right - 20, rect.CenterPoint().y));
m_ToolTipCtrl .SendMessage (TTM_TRACKACTIVATE, TRUE,reinterpret_cast<lparam>(&ti));

this code i got from some post
for more info follow this link
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/tooltip/usingtooltips.asp

naren

VC++ programmer

Re: How to display tool tips...

ugur_basak20-Jun-05 3:54

ugur_basak

20-Jun-05 3:54

narendra_ b; thank you very much for your help. I've been working on it for hours but couldn't find the solution.

Your code works very good.

Using Context Free Grammers

fordge19-Jun-05 22:05

fordge

19-Jun-05 22:05

hi Suppose I want an application which takes a source file and outputs its data members and functions.
Supposed to develop into a kind of class view explorer.
Regarding parsing the source file ....
should i go for using regular expressions rules for this parsing or
should i go for a language representation in context free grammer[CFG] and use the CFG rules for parsing

or is there any other possible ideas for source file parsing

awaiting advice
fordge

Re: Using Context Free Grammers

Rage19-Jun-05 22:34

Rage

19-Jun-05 22:34

For something with fixed syntax rules such as a programming language, I would go for a CFG, since parsing it with pure regex can be relatively complicated.

Search Code Project for context free grammar to get more information.

Hope this helps.

~RaGE();

Re: Using Context Free Grammers

Bob Stanneveld19-Jun-05 23:13

Bob Stanneveld

19-Jun-05 23:13

I think that you should use a CF Grammer for parsing the file. The advantage of the CFG is, that when you have your grammer and rules, you can easely deduce code from it by yourself or a tool.

An other advantage of a CFG over RegEx is that with a CFG, you almost always have a good overview of what you are doing and where you are doing it, RegEx tend to get complicated really fast.

A recursive parser (from a CFG) is also easier to debug, than a state based RegEx parser, since you always have stack traces and you exacty know where you are and how you came there.

IMHO I think that regular expressions are great for validating strings (like postal codes, phone numbers, etc..), but for the real parsing you shouls stick with grammers and parsers.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Re: Using Context Free Grammers

John R. Shaw20-Jun-05 4:32

John R. Shaw

20-Jun-05 4:32

Probably CFG.
If you want to try regular expressions, then go download and install Regex++. It has some example programs like taking C++ file and (thru callbacks) outputs an html file.

INTP
"The more help VB provides VB programmers, the more miserable your life as a C++ programmer becomes."
Andrew W. Troelsen

Is there anyway of looking at the code that initialises a DLL

D_code_writer19-Jun-05 22:02

D_code_writer

19-Jun-05 22:02

Hey Guys,

My name is Danny Nowlan and I'm currently working on an app using Visual C++ 6, that loads an SDI application using a DLL.

I'm having an intermittant problem in release mode with some WinXP machines where the DLL won't load at all in release mode. It doesn't even get to InitInstance() In the dll. In debug mode it is perfect. The bugger is it only happens on a handful of WinXP machines

Is there a way of looking at the source code that loads the dll into my application. That way I can put in some statements etc so when I compile in release I can see what is going on.

Thanks guys

Danny

Re: Is there anyway of looking at the code that initialises a DLL

Rage19-Jun-05 22:07

Rage

19-Jun-05 22:07

If that can help you, you could turn debugging on even for your release version (and get something between release and debug which could help you debug the release Roll eyes | :rolleyes:

)

Check following articles:

Surviving the release version[^]

Debugging the release mode[^]

Hope this helps

~RaGE();

Re: Is there anyway of looking at the code that initialises a DLL

D_code_writer20-Jun-05 20:57

D_code_writer

20-Jun-05 20:57

~RaGE();,

The first article really helped. It discussed compiler optimisations, and the moment I turned it off it worked like a charm.

Thank you so much.

Danny

How to create disk image?

jahfer19-Jun-05 21:10

jahfer

19-Jun-05 21:10

Hi,

I want to copy the entire content of a hard disk to another one. The second hard disk should be an exact image of the original one, after the copying process.

How to do this using VC++ or C++ or C?

Please suggest me the way of approach that I have to adopt.

Hoping to get a reply soon.
TIA.

regards,
Jahfer V P.

Re: How to create disk image?

David Crow20-Jun-05 2:44

David Crow

20-Jun-05 2:44

Unless you are looking for something difficult to do, I would spend $20 on a copy of Ghost. It's well worth it.

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: How to create disk image?

Toby Opferman20-Jun-05 18:55

Toby Opferman

20-Jun-05 18:55

Yes, or setup RAID if that's what you want to accomplish with this.

8bc7c0ec02c0e404c0cc0680f7018827ebee

Re: How to create disk image?

Alexander ^M.,20-Jun-05 3:27

Alexander ^M.,

20-Jun-05 3:27

If you make any mistake all the data could be lost!!!

Don't try it, just do it! Wink | ;-)

Re: How to create disk image?

John M. Drescher20-Jun-05 3:55

John M. Drescher

20-Jun-05 3:55

Is this only for one pc or many? Is this for a client? Are the disks the same size? I ask these questions because linux has a very easy utility to do this. The command is dd. I recently found this when partition magic failed to copy a failing hard drive because it han not been unmounted cleanly. Of course it was unmounted cleanly XP locked up when the disk stoped spinning. Good thing after a reboot it started spinning again... I booted off a gentoo linux live cd and at the prompt I typed dd if=/dev/hda of=/dev/hdb bs=8M and in about 1 hour I had a copy of a 40 MB drive on an 80 MB drive. It did not resize the partitions though but after removing the smaller bad disk windows XP booted and ran fine.

John

Re: How to create disk image?

Bob Stanneveld20-Jun-05 20:48

Bob Stanneveld

20-Jun-05 20:48

John M. Drescher wrote:
and in about 1 hour I had a copy of a 40 MB drive on an 80 MB drive

I sure hope that those MB's were worth the waiting. Big Grin | :-D

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Re: How to create disk image?

John M. Drescher21-Jun-05 4:10

John M. Drescher

21-Jun-05 4:10

I do this all the time. I guess it shows my age... I actually had both drive sizes on my main computer sometime in the mid to late 80s. I remember that the 80MB drive cost almost $800 and that was for a drive that had hard errors on it. Since dos 3 did not support partitions above 32 MB I remember I had to split it into multiple partitions...

John

Re: How to create disk image?

Bob Stanneveld21-Jun-05 20:31

Bob Stanneveld

21-Jun-05 20:31

What a shame that I didn't had the chance to experiance those good old days... Smile | :)

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Using WTL in Win32

daydremer19-Jun-05 21:02

daydremer

19-Jun-05 21:02

I used Oscilloscope control in win32 and i always get an error while graph was plotting data
"Unhandled exception in sm85032.exe (UOPORT.DLL): 0xC0000005: Access Violation."

as i debug into the code the source of the problem was an error in freeing a "POINT" type
pointer variable in the oscilloscope header.

Would there be any problem if i use WTL code in win32?
or is there anything i should set before accessing WTL code.

Any hints on this one.

Thanks!

Re: Using WTL in Win32

khan++19-Jun-05 22:01

khan++

19-Jun-05 22:01

Please show the code for freeing the pointer.
Some functions throw exceptions when freeing memory which was never allocated.
And there are no problems when using WTL in Win32 as far as I know.

this is this.

Re: Using WTL in Win32

daydremer20-Jun-05 0:23

daydremer

20-Jun-05 0:23

Here is the code from the header file of the Oscilloscope control
http://www.codeproject.com/wtl/WTL_Oscilloscope.asp[^]

void SetPoints(size_t time, double* values, size_t count)<br />
	{<br />
		m_time = time;<br />
		m_values = values;<br />
		m_pointsCnt = count;<br />
<br />
		if (m_points) <br />
			delete [] m_points; //line that encounters error<br />
		m_points = new POINT[m_pointsCnt];<br />
		<br />
		_UpdateYRange();<br />
		_Recalc();<br />
	}<br />

One thing is that these line do not encounter error not until the 18th time it was accessed so im wondering why?

Any suggestions? Thanks!

to draw bar garphs of geometrics function

a_david12319-Jun-05 19:40

a_david123

19-Jun-05 19:40

Respected all

Regards!
I am David from Denmark ,, have a problem.

" How to draw the Sin() or Cos() function from 10 to 200 values against time on graph,b/c I have Scalling problem to draw .

Plz guide me.

Best wishes
David

david

Re: to draw bar garphs of geometrics function

Rage19-Jun-05 21:49

Rage

19-Jun-05 21:49

If you were asking for how to draw them, maybe following charting controls may help you:

Charting controls[^]

If you were asking for how to get the data, that's a math problem, please post again with more details.

Hope this helps

~RaGE();

Open an excel file in VC++

binh.pham19-Jun-05 18:26

binh.pham

19-Jun-05 18:26

Hi all,
Anyone could show me the code to open an excel file (*.xls)in VC++?
Thanks a lot in advance.

Grenouille

Re: Open an excel file in VC++

Priyank Bolia19-Jun-05 19:43

Priyank Bolia

19-Jun-05 19:43

http://www.codeguru.com/Cpp/data/mfc_database/microsoftexcel/article.php/c1131

http://www.priyank.in/

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