C / C++ / MFC Discussion Boards

Re: malloc / free

David Crow21-Mar-07 5:41

David Crow

21-Mar-07 5:41

Ing.Raiz82 wrote:
i have problem here because strsepRss ask char ** stringp

So just use strtok().

Or, since you are using MFC, use a CString object, and AfxExtractSubString().

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: malloc / free

Ing.Raiz8221-Mar-07 6:12

Ing.Raiz82

21-Mar-07 6:12

thanks you so much... now work...

sorry for the time...

thanks

Giulio

Re: malloc / free [modified]

toxcct21-Mar-07 5:19

toxcct

21-Mar-07 5:19

1) you don't initialize the memory allocated
2) please use new[]/delete[] instead of malloc()/free()
3) prefer using containers such as std::vector if you need dynamic arrays (good for arrays of arrays too)
4) please also use <pre></pre> tags when posting code blocks

-- modified at 11:29 Wednesday 21st March, 2007

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Re: malloc / free

Laxman Auti21-Mar-07 5:26

Laxman Auti

21-Mar-07 5:26

Ing.Raiz82 wrote:
but i don't understand....

Do you really required double pointer???
looking at code, I don't think so it is required.

You could use single pointer to do same job.

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Re: malloc / free

Laxman Auti21-Mar-07 5:18

Laxman Auti

21-Mar-07 5:18

Generally allocation of memory is from TOP-to-BOTTOM approch. and deallocation of memory is BOTTOM-to-TOP approch.

Allocate => parent -> child -> subchild.<br />
Deallocate => subchild -> child ->parent.

if you deallocate parent first, then it looses the reference to child and finally subchild also which will leads to memory leaks. Smile | :)

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Change font and colors in a listbox!

olssoninc21-Mar-07 4:45

olssoninc

21-Mar-07 4:45

Hello!
I have now try to find information about changing font and color on a specific item in a listbox without succeed.

I find a "turtorial" on http://www.codersource.net/mfc_clistbox_font.html witch is describing exactly how to make a function cald MyListbox whitch change the font and color of a item in a listbox.

The problem is... I dont have any ide how to use it? Is it anybody who can help me get this function working and I will be very happy!

How do a declare declare LPDRAWITEMSTRUCT?

Thank you all!

//Anders

Conversion from CString to const char *

ilgale21-Mar-07 4:08

ilgale

21-Mar-07 4:08

How can I convert the content of a CString object into
a "const char *" type in a VS2005 UNICODE MFC application?

In VS6 there were only CString class... now, in VS2005,
developing UNICODE projects, is still good to use CString
or is better use CStringW or CStringT ?

Thanks a lot !

Re: Conversion from CString to const char *

toxcct21-Mar-07 4:22

toxcct

21-Mar-07 4:22

use CString. it is a conveniant shortcut to either CStringA (ansi builds) or CStringW (unicode builds).

with this, always use _T() marco around your litteral strings.

and to convert from a CString object, use the LPCTSTR (or LPTSTR if constness is too much), mixed if needed with conversion macros such as T2W, T2A, CT2W, CT2A, etc... (Clikety[^])

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The Simplest of Graphics

alimanishere21-Mar-07 3:35

alimanishere

21-Mar-07 3:35

Hi,

We need help to create a window and display three variables with big fonts. How do we do this, we don't need nothing complicated. Please help!

alex

Re: The Simplest of Graphics

ilgale21-Mar-07 4:14

ilgale

21-Mar-07 4:14

Take a look to this class, it offers a very usefull interface !

http://www.codeproject.com/staticctrl/clabel.asp[^]

Re: The Simplest of Graphics

alimanishere21-Mar-07 23:45

alimanishere

21-Mar-07 23:45

nice demo program but it is a bit complicated for us. we have only been programming c++ for three weeks and we need something simpler and easier to follow with a few commands/functions. thanks

Re: The Simplest of Graphics

David Crow21-Mar-07 4:39

David Crow

21-Mar-07 4:39

Your problem can be broken down into at least three smaller problems:

1) Create a window
2) Display data
3) Use a font other than the default

Which part do you need help with? Are you using MFC?

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: The Simplest of Graphics

alimanishere21-Mar-07 22:26

alimanishere

21-Mar-07 22:26

we would like to get help with 2)display data and 3)Use a font other than the default. And yes, we are using MFC.

thank you for taking your time.

Re: The Simplest of Graphics

David Crow22-Mar-07 2:48

David Crow

22-Mar-07 2:48

alimanishere wrote:
we would like to get help with 2)display data...

In the OnPaint() handler, use TextOut().

alimanishere wrote:
3)Use a font other than the default.

Select a new font into the DC used by the OnPaint() handler.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: The Simplest of Graphics

alimanishere23-Mar-07 0:30

alimanishere

23-Mar-07 0:30

ok thanks..but how do you change the font size?

Re: The Simplest of Graphics

David Crow23-Mar-07 7:59

David Crow

23-Mar-07 7:59

alimanishere wrote:
how do you change the font size?

LOGFONT lf = {0};
_tcscpy(lf.lfFaceName, _T("MS Sans Serif"));
lf.lfHeight = 8;
lf.lfWeight = FW_BOLD;
 
CFont font;
m_font.CreateFontIndirect(&lf);
dc.SelectObject(font);

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Export Text/HTML to RTF / DOC

Vikrant for VC++21-Mar-07 3:02

Vikrant for VC++

21-Mar-07 3:02

Hello Friends

Any idea as to how we can export a document in text/HTML format to RTF/DOC format?

Is there anything free from microsoft to do the conversion?
Or some other library / some way?

Regards

Re: Export Text/HTML to RTF / DOC

David Crow21-Mar-07 3:19

David Crow

21-Mar-07 3:19

I would be tempted to try it with Word. It has a COM interface that can open/save documents.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

Re: Export Text/HTML to RTF / DOC

James R. Twine21-Mar-07 6:47

James R. Twine

21-Mar-07 6:47

   A possibly quick and dirty way is to create an application that has a Rich Edit control on it, and paste in content from a normal edit control or a browser. You can then stream the RTF back out of the rich edit control.

   It is Q&D, but it should work...

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<HR>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

while working with dll

ganesa moorthy21-Mar-07 2:52

ganesa moorthy

21-Mar-07 2:52

how to insert a dll to our VC++ Project files and how to findout the functions exported to it if we don't have knowledge on it...pl any one answer it

Thanks a lot

Re: while working with dll

toxcct21-Mar-07 2:54

toxcct

21-Mar-07 2:54

dependency walker[^]

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Re: while working with dll

prasad_som21-Mar-07 2:56

prasad_som

21-Mar-07 2:56

Should start from Part 1[^] of series of articles by Hans Dietrich.

Prasad
Notifier using ATL | Operator new[],delete[][^]

Using OpenUrl(csFilePath) with unicode project?

bosfan21-Mar-07 2:42

bosfan

21-Mar-07 2:42

Hello comunity,
i try to open local html files using CInternetSession::OpenURL(); function, but this fails
every time when the path has some letters that are over 122, example, if path contains
letter ä!
I recive an error that the path is incorect, and the letter in this case ä is changed to %E4!
How to solve this, is this posible?
And, if the path has only the normal letters, this funktion works fine!
thanks for any help!

with best regards
break;

Re: Using OpenUrl(csFilePath) with unicode project?

Mark Salsbery22-Mar-07 8:15

Mark Salsbery

22-Mar-07 8:15

I believe URLs have a limited set of allowed characters, something like:

Only alphanumerics [0-9a-zA-Z] and the special characters $-_.+!*'(),

Any other characters need to be encoded.

Mark

"If you can dodge a wrench, you can dodge a ball."

Re: Using OpenUrl(csFilePath) with unicode project?

bosfan22-Mar-07 22:01

bosfan

22-Mar-07 22:01

Hello,
is there a function to encode a url path or we need to make own function for that?

regards
termal

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