dev-cpp-users Mailing List for Dev-C++ (Page 2)

    For everyone looking for a good C++ reference
site, goto www.cplusplus.com

    Amazing. Simply.

Sev


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Ian,
        Hopefully you are using the C++ string class vice the C pointer =
crap (dangerous).  If not, I would recommend you do.  There is a find() =
operator for that class.  You can find an excellent tutorial on the =
string class at =
http://www.icce.rug.nl/docs/cplusplus/cplusplus04.html#l50.

                                                                         =
       Alan

From: "Ian Weston" <lak...@ho...>
Date: Tue, 27 Mar 2001 20:59:00 -0000
Subject: [Dev-C++] string.

Hi again everyone. i was just wondering if anyone knows how to search=20
through text for a specified word.

>What is the runtime error?

the runtime error is the usual Windows 
take-it-back-to-whoever-sold-it-to-you jobby... not fantastically specific 
:O(

>I haven't tried this is a windows program but it's okay in console mode?

yeah i've had hardly any trouble with the stl stuff in console mode - it's 
only when its built for windows that problems start appearing. it's 
especially annoying because i've been using the console to develop modules 
and make sure they're working, and then when i move them into a proper 
windows app, they blow up without much hint of what's wrong.

i've tried using the debugger on it (gdb with insight frontend) and it goes 
in to the std::list constructor before dying, so i take it there's a problem 
with the stl, or some compiler option i'm setting/not setting which is 
needed.

   richard
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Hi,

there was a recent posting about using Microsoft's htmlhelp.lib with
Dev-CPP or mingw. I am interested in using the Microsoft's Device Driver
Development kit with Dev-CPP? This is a lot of libs and .h files. Is
this possible? Did anybody try it? Or is there any other way to access
memory at physical address, IRQs and DMAs from Windows apps in Dev-CPP?

Thank you
-- 
============================================================
                           Ing. Boleslav Vrany
                           Stanice techniku DDM hl. m. Prahy
                           Pod Juliskou 2a
                           Praha 6 - Dejvice
                           16000
                           Czech Republic

                           tel. (420 2) 243 10 240

Hi all,

i tried to run Dev-CPP over our network (FreeBSD 4.2 + Samba 2.0.8).
However, it needs to have write permision to DEV-CPP.INI - otherwise it
crashes. Dev-CPP is in a write protected directory on the server. I
wouldn't like to change permisions of this file and also I would like
all users to have their own copy of Dev-CPP in their home directories.
Does anybody know how to do it?

I tried deleting Dev-CPP.INI from the server and moving it to C:\WINDOWS
or other directories on PATH, but nothing worked. I searched through the
registry hoping to find a key with Dev-CPP location but there is none.

Thank you
-- 
============================================================
                           Ing. Boleslav Vrany
                           Stanice techniku DDM hl. m. Prahy
                           Pod Juliskou 2a
                           Praha 6 - Dejvice
                           16000
                           Czech Republic

                           tel. (420 2) 243 10 240

Opps! That will teach me to try and remember this from a year ago rather
than looking it up!

What is the runtime error?

I haven't tried this is a windows program but it's okay in console mode?

Regards,

James.


-----Original Message-----
From: Richard Asbury [mailto:dic...@ho...]
Sent: Wednesday, March 28, 2001 3:14 PM
To: dev...@li...
Subject: RE: [Dev-C++] stl and windows apps


>I assume that you have included the line 'including namespace std;' or
>'including std::list;' in there?

i think the statement is 'using namespace std', but this stl seems to be a 
bit confused about where various things should go, and you can have things 
in the std namespace whether or not you 'using' it. anyway, that should 
cause a compiler error, and the problem here was a runtime error :O(

thanks for the suggestion,

  richard
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>I assume that you have included the line 'including namespace std;' or
>'including std::list;' in there?

i think the statement is 'using namespace std', but this stl seems to be a 
bit confused about where various things should go, and you can have things 
in the std namespace whether or not you 'using' it. anyway, that should 
cause a compiler error, and the problem here was a runtime error :O(

thanks for the suggestion,

  richard
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Using C or C++.
Many replies for C.
In C++ try using string.find_first_of and other member functions.

Regards,

James.


-----Original Message-----
From: Ian Weston [mailto:lak...@ho...]
Sent: Tuesday, March 27, 2001 9:59 PM
To: dev...@li...
Subject: [Dev-C++] string.


Hi again everyone. i was just wondering if anyone knows how to search 
through text for a specified word.

thanks.
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I assume that you have included the line 'including namespace std;' or
'including std::list;' in there?

Regards,

James.


-----Original Message-----
From: Richard Asbury [mailto:dic...@ho...]
Sent: Monday, March 26, 2001 2:30 AM
To: dev...@li...
Subject: [Dev-C++] stl and windows apps


posted this on the forum but hoping that more people will read it here...

i've had some real problems using the stl in programs compiled for windows 
(i.e. no console)... vector::push_back, the string constructor and the list 
constructor will all cause runtime errors...

does anyone know how to sort this out, or am i going to have to write my own

stl?

here's an example of some code that will die

#include <list>
#include "windows.h"

int WINAPI WinMain(HINSTANCE, HINSTANCE, LPSTR, int)
{
list<int> li;
return 0;
}

thanks in advance,

  richard

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Maybe this is not the best to talk in "Dev-C++ mailing list" but you cantry to
use "Qt" that is freeware, also. Try searching on www.trolltech.com

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To search for specific text you can use some of the functions in the library string.h

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> how to search  through text for a specified word.
 You can use:
    strstr( const char *string, const char *strCharSet );
The first parameter is your text and the second is the word.
The function returns a pointer to the beginning of the word in the text.

p.s. you have to include <string.h>

Here follows a snippet of the GNU C library

Hope this helps

Chemanuel

**********************************************************************
Search Functions

This section describes library functions which perform various kinds of
searching operations on strings and arrays.  These functions are
declared in the header file string.h.  

Function: char * strchr (const char *string, int c)

The strchr function finds the first occurrence of the character c
(converted to a char) in the null-terminated string beginning at
string.  The return value is a pointer to the located character, or a
null pointer if no match was found.

For example, 

strchr ("hello, world", 'l')
    => "llo, world"
strchr ("hello, world", '?')
    => NULL

The terminating null character is considered to be part of the string,
so you can use this function get a pointer to the end of a string by
specifying a null character as the value of the c argument.


Function: char * strstr (const char *haystack, const char *needle)

This is like strchr, except that it searches haystack for a substring
needle rather than just a single character.  It returns a pointer into
the string haystack that is the first character of the substring, or a
null pointer if no match was found.  If needle is an empty string, the
function returns haystack.

For example, 

strstr ("hello, world", "l")
    => "llo, world"
strstr ("hello, world", "wo")
    => "world"

********************************************************************

--- Ian Weston <lak...@ho...> escribió: > Hi again
everyone. i was just wondering if anyone knows how to search
> 
> through text for a specified word.
> 
> thanks.
> 

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There are quite some tutorials that teach how to create windows
applications.

You can find a list at

http://www.geocities.com/josempadron/eng/tutorials.htm

You can learn from source code. I recommend Programmers Heaven web site
and the books "Programming Windows" & "Programming the User Interface"
(or something like that).

You can get the links to source code at

http://www.geocities.com/josempadron/eng/links.htm


--- Ian Weston <lak...@ho...> escribió: > Hi all.
please could someone tell me how one would go about making
> things in 
> a windows app, such as:
> 
> showing text
> area's where you enter text
> drop down menu's
> buttons
> radio butons.
> 
> i know there is a lot there, but i would be really greatful if even
> just one 
> was answered.
> 
> thanks.
>
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> 
> 
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> I have been searching for an answer to this problem for a few
> months. I have decided to try on the list again, but asking a
> slightly different question:
> Does anyone have or know where to get a ".a" version of the library
> htmlhelp.lib?
>
> I think my problem lies in the fact that I am using htmlhelp.lib
> from Microsoft and Dev-C++ only likes .a files.

I'm using htmlhelp in my projects, and the htmlhelp.lib works for me.
Did you try adding the full path to the htmlhelp.lib to the object
files ?

> Where are the original sources for htmlhelp.lib and how can I
> recompile them into a .a?

This wasn't necessary for me.. maybe you need a newer version of the
mingw linker ?

> My problem is this: I am trying to add help to my program (surely
> some people can do it, the Dev-C++ IDE has it!) - that is a Help
> menu item. I have got the menu but when I call the function HtmlHelp
> () nothing  happens.
> If I try GetLastError() the message box doesn't even show up!
>
> If you know how to add HTML help (chm file) to a program, don't
> worry about all the errors I'm talking about above, just please try
> and help me by going through it step by step. I've got my .chm file
> which I made with the Microsoft Html Help compiler and a shareware
> Help file builder.

All i had to do was this:

I copied the htmlhelp.h to the dev-c++ dir and added this line to the
beginning of every .cpp file which is using the HTMLHelp function:

#include <htmlhelp.h>

I copied the htmlhelp lib inside the dev-c++ dir and added this to the
object files:

c:/dev-c++/lib/htmlhelp.lib

This is an example how i open a topic inside a help file:

HtmlHelp(hwnd,"myhelp.chm::/ToolMenu.html#Export",HH_DISPLAY_TOPIC,0);

> Or, if you know how to make a WinHelp() that would be good, but I
> prefer
> HTMLhelp.
>
> If worst comes to worst, I might have to just open this file like I
> would from the command prompt. How do you do that (Like calling
> system() in DOS programming eg. system(C:\hello.exe); opens
> hello.exe from within your program)?
>
> Thanks in advance to anyone who can post a meaningful reply!
>
> Ramana
>
>
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
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>

Try int main () and a couple of cin.get(); before the return 0.

Linda

---------------------------------
----- Original Message ----- 
From: "Randy Hust" <ran...@rc...>
To: <dev...@li...>
Sent: Tuesday, March 27, 2001 10:25 AM
Subject: [Dev-C++] Newbie


> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users

#include <stdlib.h>


Ioannis
 
* Ioannis Vranos
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* Alternative URL: http://run.to/noicys


> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...]On Behalf Of Randy Hust
> Sent: Tuesday, March 27, 2001 5:25 PM
> To: dev...@li...
> Subject: [Dev-C++] Newbie
> 
> 
> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
> 

I have been searching for an answer to this problem for a few months. I have
decided to try on the list again, but asking a slightly different question:
Does anyone have or know where to get a ".a" version of the library
htmlhelp.lib?

I think my problem lies in the fact that I am using htmlhelp.lib from
Microsoft and Dev-C++ only likes .a files.

Where are the original sources for htmlhelp.lib and how can I recompile them
into a .a?

My problem is this: I am trying to add help to my program (surely some
people can do it, the Dev-C++ IDE has it!) - that is a Help menu item. I
have got the menu but when I call the function HtmlHelp() nothing happens.
If I try GetLastError() the message box doesn't even show up!

If you know how to add HTML help (chm file) to a program, don't worry about
all the errors I'm talking about above, just please try and help me by going
through it step by step. I've got my .chm file which I made with the
Microsoft Html Help compiler and a shareware Help file builder.

Or, if you know how to make a WinHelp() that would be good, but I prefer
HTMLhelp.

If worst comes to worst, I might have to just open this file like I would
from the command prompt. How do you do that (Like calling system() in DOS
programming eg. system(C:\hello.exe); opens hello.exe from within your
program)?

Thanks in advance to anyone who can post a meaningful reply!

Ramana

goto
www.winprog.org

Ian Weston wrote:

> Hi all. please could someone tell me how one would go about making things in
> a windows app, such as:
>
> showing text
> area's where you enter text
> drop down menu's
> buttons
> radio butons.
>

This email was delivered to you by The Free Internet,
a Business Online Group company. http://www.thefreeinternet.net
---------------------------------------------------------------

hi,

does anybody use the allegro library with dev c++4 that i can correspond =
with?

Hi again everyone. i was just wondering if anyone knows how to search 
through text for a specified word.

thanks.
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

Hi all. please could someone tell me how one would go about making things in 
a windows app, such as:

showing text
area's where you enter text
drop down menu's
buttons
radio butons.

i know there is a lot there, but i would be really greatful if even just one 
was answered.

thanks.
_________________________________________________________________________
Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.

You need to include "#include <stdlib.h>" , no quotes, to get it to work.
ray.



At 07:25 AM 3/27/01 -0800, you wrote:
>
>Hi..I'm just getting started and I understand that when you want to halt
>the screen in order to read the result in DOS you must enter
>system("PAUSE");
>Why does this work sometimes and other times I get a compilation error
>  " 18: implicit declaration of function `int system(...)' "
>
>Here is a sample no-brainer program I coded that produces just that
>error...
>Thanks!
>
>#include <stdio.h>
>
> main()
>{
>float perCent,result,num;
>
>printf("Enter the number you want a percentage of :\n");
>scanf("%f",&num);
>
>printf("Enter the percentage of that number you want calculated :\n");
>scanf("%f", &perCent);
>
>  result = (num * perCent)/100;
>
>     printf("%f  percent of  %f  =  %f", perCent,num,result);
>
>             system("PAUSE");
>
>            return 0;
>
>  }
>
>
>
>_______________________________________________
>Dev-cpp-users mailing list
>Dev...@li...
>http://lists.sourceforge.net/lists/listinfo/dev-cpp-users
>
>
Ray Witter

> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
The prototype of the function system is contained in the header stdlib.h,
thus you should add 

#include <stdlib.h>

to your program.

Hope this helps


Francesco

try

#include <iostream.h>





On Tue, 27 Mar 2001 07:25:22 -0800 Randy Hust <ran...@rc...> 
wrote:

> 
> Hi..I'm just getting started and I understand that when you want to halt
> the screen in order to read the result in DOS you must enter
> system("PAUSE");
> Why does this work sometimes and other times I get a compilation error
>   " 18: implicit declaration of function `int system(...)' "
> 
> Here is a sample no-brainer program I coded that produces just that
> error...
> Thanks!
> 
> #include <stdio.h>
> 
>  main()
> {
> float perCent,result,num;
> 
> printf("Enter the number you want a percentage of :\n");
> scanf("%f",&num);
> 
> printf("Enter the percentage of that number you want calculated :\n");
> scanf("%f", &perCent);
> 
>   result = (num * perCent)/100;
> 
>      printf("%f  percent of  %f  =  %f", perCent,num,result);
> 
>              system("PAUSE");
> 
>             return 0;
> 
>   }
> 
> 
> 
> _______________________________________________
> Dev-cpp-users mailing list
> Dev...@li...
> http://lists.sourceforge.net/lists/listinfo/dev-cpp-users


----------------------
Simon R Hillman
sim...@kc...