dev-cpp-users — Dev-C++ users discussion list

Re: [Dev-C++] Exporting a Class in C++....

[Per W. <pw...@ia...>]

The normal way to create new classs in a DLL is to:

- declare a (possibly abstract) base class in main program.
- declare a new class inherriting from the base class in the DLL.
- export a object-create function in the DLL.

The main program then calls the create function in the DLL, and receives a
pointer to the new subclassed object.

Since virtual method calls are decided at run-time, all virtual calls will
go to the new class implementation. Inline and non-virtual methods will
use tme methods available at compile time, i.e. the code in the main 
program.

/PWM


On Tue, 6 Aug 2002, Raghunath Marella.S wrote:

> Hi there,
> 
> I am trying to export a class in a DLL. I have
> declared that class as __declspec(dllexport). I am
> trying to link this DLL dynamicall from an executable.
> With the help of a example in MSDN, i declared a
> similar class in executable, with same name and also
> the same funcitons which are required to call from
> executable. This class in 'exe' was declared
> __declspec(dllimport). 
> 
> NOw a object for this class has been declared in 'exe'
> and  calling member functions thro object. 
> 
> The DLL was loaded by LoadLibrary(..) call. 
> 
> WIll any one let me know is the above procedure
> sufficient or something else also to be done. 
> 
> thanks & regards,
> Raghunath
> 
> __________________________________________________
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[Dev-C++] Exporting a Class in C++....

[Raghunath Marella.S <ms...@ya...>]

Hi there,

I am trying to export a class in a DLL. I have
declared that class as __declspec(dllexport). I am
trying to link this DLL dynamicall from an executable.
With the help of a example in MSDN, i declared a
similar class in executable, with same name and also
the same funcitons which are required to call from
executable. This class in 'exe' was declared
__declspec(dllimport). 

NOw a object for this class has been declared in 'exe'
and  calling member functions thro object. 

The DLL was loaded by LoadLibrary(..) call. 

WIll any one let me know is the above procedure
sufficient or something else also to be done. 

thanks & regards,
Raghunath

__________________________________________________
Do You Yahoo!?
Yahoo! Health - Feel better, live better
http://health.yahoo.com

Re: [Dev-C++] Debugging win-based appz

[Zodiaq <zo...@ac...>]

Hello MetalSeb59 and all Dev-C++ users,

Monday, August 5, 2002, 2:53:21 PM, MetalSeb59 wrote as follows:

Mac> Hi there, second time !

Mac> Isn't there any possibility to "cout" some vars to a console window whan I 
Mac> code a win32 based dialog box ?

Mac> Inside my code, when I do just a cout, nothing is done. And there is no way 
Mac> in DevCpp options to tell him to generate a console window or I need a 
Mac> serious pair of glasses.

Mac> Anybody could help ?

Read in MSDN or in Windows Platform SDK about: AllocConsole,
FreeConsole and WriteConsole and some other console-functions...

Mac> Kind regards

Mac> --

Mac> Seb



-- 
regards, Zodiaq

Re: [Dev-C++] Latest WIN32 API reference

[Zodiaq <zo...@ac...>]

Hello MetalSeb59 and all Dev-C++ users,

Monday, August 5, 2002, 2:46:26 PM, MetalSeb59 wrote as follows:

Mac> Hi there

Mac> Anybody knows where I could download the *lastest* WIN32 API reference ?

I suggest for local use that you download entire Windows Platform SDK at:
http://www.microsoft.com/msdownload/platformsdk/sdkupdate/
try not to remove any SDKs because you might miss important features -
for example I coulnd't use some parts of help...

And remember that you can't use this as F1 Help inside M$ Visual
Studio - to do that you have obtain MSDN...

Mac> All the locations that I have found just gave me the Win95 reference. I 
Mac> cannot find messages like TTM_SETTIPBKCOLOR in these refs, which I know are 
Mac> defined only since Win98

Mac> Kind regards

Mac> --

Mac> Seb

-- 
regards, Zodiaq

Re: [Dev-C++] Include Files

[Per W. <pw...@ia...>]

Hi!

Did you really mean
	cout < "Testing";
	cin > x;
instead of
	cout << "Testing";
	cin >> x;

When code that relies on templated code contains errors, the compiler
normally flags these errors in the include files where the templates are
defined, instead of in the referencing source code file.

/PWM

RE: [Dev-C++] iterating by 2

[Ioannis V. <no...@ho...>]

 <http://run.to/noicys>=20
-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Carlos
Garc?a del Monte
Sent: Tuesday, August 06, 2002 3:13 PM
To: dev-cpp-users-list
Subject: Re: [Dev-C++] iterating by 2



It shall work if it compiles. But when I declare i like you, inside a
for statement, the compiler reports error due to an old fashioned way to
declare it, try to declare it before the for.=20

=20
  ? What compiler do you have?
=20

  But then that error should have been reported.=20
Or substitute it by a while, and perhaps after you can restore the for
and see what happens.=20
On one of my recent experiments I first used a for, the program didn't
run and I changed it by a while, and it worked (???????), after I used
again the for and it worked (??????????!!!!!!!!!!!!!!). =20

=20
Obviously the first time you made a syntax error. The definition inside
a for loop is valid ANSI C++ (we are talking about C++ here).
=20
=20

Some times the compiler behaves a little strange, it pass over lines
don't executing them, or calls functions which are not called where it
calls them, or makes a for or while not work although it is well
written... =20

=20
Your compiler needs psychiatric evaluation. :)
=20

tam...@ms... escribi=F3:=20

I have been tasked with a problem in my newbie manual to use a "for
loop" and to console out by 2's from 0 to 20 here's what I have done and
I was wondering 1st why it doesn't work and 2nd how do I make it work.
#include <iostream>int main()=20
{=20
    // --- iterate an integer by 2=20
        for (int i =3D 0; i <=3D 20; i+=3D2){=20
        std::cout << i << '\n';=20

    }=20
    // --- pause system=20
    char end[5];=20
    std::cin >> end;  return 0;=20
} Thanks in advanceDanny =20

=20
=20
Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
<http://www.noicys.cjb.net/>=20
* Alternative URL: http://run.to/noicys  =20

Re: [Dev-C++] iterating by 2

[Carlos d. M. <cg...@wo...>]

It shall work if it compiles. But when I declare i like you, inside a
for statement, the compiler reports error due to an old fashioned way to
declare it, try to declare it before the for. But then that error should
have been reported.
Or substitute it by a while, and perhaps after you can restore the for
and see what happens.
On one of my recent experiments I first used a for, the program didn't
run and I changed it by a while, and it worked (???????), after I used
again the for and it worked (??????????!!!!!!!!!!!!!!).
Some times the compiler behaves a little strange, it pass over lines
don't executing them, or calls functions which are not called where it
calls them, or makes a for or while not work although it is well
written...

tam...@ms... escribi=F3:

> I have been tasked with a problem in my newbie manual to use a "for
> loop" and to console out by 2's from 0 to 20 here's what I have done
> and I was wondering 1st why it doesn't work and 2nd how do I make it
> work. #include <iostream>int main()
> {
>     // --- iterate an integer by 2
>         for (int i =3D 0; i <=3D 20; i+=3D2){
>         std::cout << i << '\n';
>
>     }
>     // --- pause system
>     char end[5];
>     std::cin >> end;  return 0;
> } Thanks in advanceDanny
>

[Dev-C++] (no subject)

[Tom B. <tbu...@co...>]

confirm 828946

[Dev-C++] (no subject)

[Tom B. <tbu...@co...>]

Re: [Dev-C++] A large-scale project

[<Met...@ao...>]

ia...@jo... said :

> For Dev-C++, why don't u produce ur own encapsulation of Windows API?

To stay raw Win32 API standard ?

Better than anything I think. You know how to code, you know how it works...

Kind regards

--

Seb

[Dev-C++] A large-scale project

[Ihsan A. Al D. <ia...@jo...>]

For Dev-C++, why don't u produce ur own encapsulation of Windows API?

Mohammed

[Dev-C++] COM tutorials

[Daniel G. <sp...@ho...>]

Hi all,
I'm looking for some tutorials on how to work with COM. I've done a few from 
one book, I'm wondering if any are online?

Daniel


_________________________________________________________________
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Re: [Dev-C++] Include Files

[Daniel G. <sp...@ho...>]

Linking errors. Make sure your project is looking in the right directories 
for the included files. It appears you're missing some files that iostream 
is trying to include.


>From: Bert Iling <ch_...@ya...>
>To: Daniel Glenfield <sp...@ho...>
>Subject: Re: [Dev-C++] Include Files
>Date: Mon, 5 Aug 2002 10:55:29 -0700 (PDT)
>
>
>I took a pic of the errors I got. They're attached to this email. And 
>here's my code.
>---------------
>#include <iostream>
>using namespace std;
>int main()
>{
>cout << "Testing";
>int x;
>cin >> x;
>return 0;
>}
>-----------------------
>   Daniel Glenfield <sp...@ho...> wrote: These are include files 
>you've made yourself?
>
>Try rearranging their order, I find that sometimes code won't compile 
>unless
>the headers are in the right order (trial and error I'm afraid).
>
>What errors do you get? You may have circular dependence (HeaderA calls
>HeaderB which calls HeaderA) or header files including other header files
>before they've been declared possibly.
>
>
> >From: Bert Iling
> >To: dev...@li...
> >Subject: [Dev-C++] Include Files
> >Date: Sun, 4 Aug 2002 15:31:34 -0700 (PDT)
> >
> >I complied a program in Dev-C++ 4.9.5.0 and there were errors in the
> >include files. How do I fix this? I am ABSOLUTLY sure that there is 
>nothing
> >wrong with my code.
> >
> >
> >---------------------------------
> >Do You Yahoo!?
> >Yahoo! Health - Feel better, live better
>
>
>
>
>_________________________________________________________________
>Send and receive Hotmail on your mobile device: http://mobile.msn.com
>
>
>
>---------------------------------
>Do You Yahoo!?
>Yahoo! Health - Feel better, live better
><< dev-c__.jpg >>




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Re: [Dev-C++] iterating by 2

[Ioannis V. <no...@ho...>]

<html><div style='background-color:'><DIV>
<P><FONT color=#000066>I suppose you mean why it doesn't stop pausing after you press Enter. Because it waits for some text input.&nbsp; A better way is to use cin.ignore():</FONT></P>
<P><FONT color=#000066></FONT>&nbsp;</P>
<P><FONT color=#000066>#include &lt;iostream&gt;</FONT></P>
<P><FONT color=#000066>int main()<BR>{<BR>&nbsp;&nbsp;&nbsp; // --- iterate an integer by 2<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; for (int i = 0; i &lt;= 20; i+=2){<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; std::cout &lt;&lt; i &lt;&lt; '\n'; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp; }</FONT></P>
<P><FONT color=#000066>&nbsp;&nbsp;&nbsp; // --- pause system<BR>&nbsp;&nbsp;&nbsp; std::cin.ignore();<BR>&nbsp;&nbsp;&nbsp; <BR>&nbsp; return 0;<BR>}<BR></FONT></P>
<P><FONT color=#000066></FONT>&nbsp;</P>
<P><FONT color=#000066>However in MINGW 3.1 that i am using it needs two Enters to proceed which is not right (bug). I reported it&nbsp; to MINGW list. It should need only one.</FONT><BR><BR></P></DIV>
<DIV></DIV><BR><BR><BR>
<DIV><FONT color=#000066>Ioannis</FONT></DIV>
<DIV></DIV>
<DIV><FONT color=#000066></FONT>&nbsp;</DIV>
<DIV></DIV>
<DIV><FONT color=#000066></FONT></DIV>
<DIV></DIV>
<DIV><FONT color=#000066>* Ioannis Vranos </FONT></DIV>
<DIV></DIV>
<DIV><FONT color=#000066></FONT></DIV>
<DIV></DIV>
<DIV><FONT color=#000066>* Programming pages: </FONT><A href="http://www.noicys.cjb.net/"><FONT color=#000066>http://www.noicys.cjb.net</FONT></A></DIV>
<DIV></DIV>
<DIV><FONT color=#000066></FONT></DIV>
<DIV></DIV>
<DIV><FONT color=#000066>* Alternative URL: </FONT><A href="http://run.to/noicys"><FONT color=#000066>http://run.to/noicys</FONT></A></DIV>
<DIV>&nbsp;</DIV>
<DIV>&nbsp;</DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>
<DIV></DIV>&gt;From: tam...@ms... 
<DIV></DIV>&gt;To: <DEV...@LI...>
<DIV></DIV>&gt;Subject: [Dev-C++] iterating by 2 
<DIV></DIV>&gt;Date: Mon, 5 Aug 2002 17:50:15 -0500 
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<DIV></DIV>&gt;X-Original-Date: Mon, 5 Aug 2002 17:50:15 -0500 
<DIV></DIV>&gt;Return-Path: dev...@li... 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;I have been tasked with a problem in my newbie manual to use a "for loop" and to console out by 2's from 0 to 20 here's what I have done and I was wondering 1st why it doesn't work and 2nd how do I make it work. 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;#include <IOSTREAM>
<DIV></DIV>&gt;int main() 
<DIV></DIV>&gt;{ 
<DIV></DIV>&gt; // --- iterate an integer by 2 
<DIV></DIV>&gt; for (int i = 0; i &lt;= 20; i+=2){ 
<DIV></DIV>&gt; std::cout &lt;&lt; i &lt;&lt; '\n'; 
<DIV></DIV>&gt; 
<DIV></DIV>&gt; } 
<DIV></DIV>&gt; // --- pause system 
<DIV></DIV>&gt; char end[5]; 
<DIV></DIV>&gt; std::cin &gt;&gt; end; 
<DIV></DIV>&gt; return 0; 
<DIV></DIV>&gt;} 
<DIV></DIV>&gt; 
<DIV></DIV>&gt;Thanks in advance 
<DIV></DIV>&gt;Danny 
<DIV></DIV></mailto:dev...@li...?subject=unsubscribe></mailto:dev...@li...?subject=subscribe></mailto:dev...@li...></mailto:dev...@li...?subject=help></div><br clear=all><hr>Chat with friends online, try MSN Messenger: <a href='http://g.msn.com/1HM1ENXX/c144??PS=47575'>Click Here</a><br></html>

Re: [Dev-C++] iterating by 2

[rchavez <rc...@so...>]

Hi,

Define doesn't work.  I saw no evil so I tried your code & it works find 
printing 0 to 20 by 2's, one per line.  Does it not compile or not run 
for you?  

Rob

> I have been tasked with a problem in my newbie manual to use a "for loop"=
>  and to console out by 2's from 0 to 20 here's what I have done and I was=
>  wondering 1st why it doesn't work and 2nd how do I make it work.
> 
> #include <iostream>
> int main()
> {
>     // --- iterate an integer by 2
>         for (int i =3D 0; i <=3D 20; i+=3D2){
>         std::cout << i << '\n'; =20
>        =20
>     }
>     // --- pause system
>     char end[5];
>     std::cin >> end;
>   return 0;
> }
> 
> Thanks in advance
> Danny

[Dev-C++] iterating by 2

[<tam...@ms...>]

I have been tasked with a problem in my newbie manual to use a "for loop"=
 and to console out by 2's from 0 to 20 here's what I have done and I was=
 wondering 1st why it doesn't work and 2nd how do I make it work.

#include <iostream>
int main()
{
    // --- iterate an integer by 2
        for (int i =3D 0; i <=3D 20; i+=3D2){
        std::cout << i << '\n'; =20
       =20
    }
    // --- pause system
    char end[5];
    std::cin >> end;
  return 0;
}

Thanks in advance
Danny

Re: [Dev-C++] parsing speed at startup

[Hongli L. <h....@ch...>]

On Mon, 2002-08-05 at 15:28, Thorsten Maerz wrote:
> 
> Yeah, thought of that - but I didnt find this option yet.
> Could you please tell me, where to disable parsing?
> 

Tools->Editor Options->Code Completion

Re: [Dev-C++] Debugging win-based appz

[Hongli L. <h....@ch...>]

On Mon, 2002-08-05 at 14:53, Met...@ao... wrote:
> Hi there, second time !
> 
> Isn't there any possibility to "cout" some vars to a console window whan I 
> code a win32 based dialog box ?
> 
> Inside my code, when I do just a cout, nothing is done. And there is no way 
> in DevCpp options to tell him to generate a console window or I need a 
> serious pair of glasses.
> 
> Anybody could help ?

Project->Options->Type->Win32 Console

Re: [Dev-C++] parsing speed at startup

[Thorsten M. <to...@ne...>]

Hi Hongli,

On 05 Aug 2002 15:09:54 +0200 Hongli Lai <h....@ch...> wrote:

> > Is there a way to speed this up?
> 
> Turn off parsing.

Yeah, thought of that - but I didnt find this option yet.
Could you please tell me, where to disable parsing?

Best regards,
-- 
Thorsten Maerz          <to...@ne...>
Sylpheed-claws/Win32:   http://claws-w32.sf.net

Re: [Dev-C++] Latest WIN32 API reference

[Thorsten M. <to...@ne...>]

Hi Met...@ao...,

On Mon, 5 Aug 2002 08:46:26 EDT Met...@ao... wrote:

> Anybody knows where I could download the *lastest* WIN32 API reference ?

http://msdn.microsoft.com/library

HTH
-- 
Thorsten Maerz          <to...@ne...>
Sylpheed-claws/Win32:   http://claws-w32.sf.net

Re: [Dev-C++] parsing speed at startup

[Hongli L. <h....@ch...>]

On Mon, 2002-08-05 at 12:30, Thorsten Maerz wrote:
> Hi there,
> 
> I imported an existing MSVC project for a Gtk-1.3 application into
> Dev-Cpp (4.9.5.0, but 4.9.3.0 wasnt better). The sources consist of
> about 300 files giving a size of 4.6 MB. Opening the the newly created
> .dev now takes a very long time (> 15 minutes) just for parsing the
> sources (Athlon @1400 MHz, 512 MB RAM, 65 GB free HD/Raid, WinXP).
> Is there a way to speed this up?
> 

Turn off parsing.

[Dev-C++] Debugging win-based appz

[<Met...@ao...>]

Hi there, second time !

Isn't there any possibility to "cout" some vars to a console window whan I 
code a win32 based dialog box ?

Inside my code, when I do just a cout, nothing is done. And there is no way 
in DevCpp options to tell him to generate a console window or I need a 
serious pair of glasses.

Anybody could help ?

Kind regards

--

Seb

[Dev-C++] Latest WIN32 API reference

[<Met...@ao...>]

Hi there

Anybody knows where I could download the *lastest* WIN32 API reference ?

All the locations that I have found just gave me the Win95 reference. I 
cannot find messages like TTM_SETTIPBKCOLOR in these refs, which I know are 
defined only since Win98

Kind regards

--

Seb

RE: [Dev-C++] Help me with debugging pls. II

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: dev...@li... 
> [mailto:dev...@li...] On Behalf 
> Of Ramana Kumar
> Sent: Monday, August 05, 2002 2:30 PM
> To: Ioannis Vranos; C++
> Subject: RE: [Dev-C++] Help me with debugging pls.
> 
> Instead, I suggest writing:
> 
> using std::cout;
> using std::system;
> //etc
> 
> at the top of whichever file needs these functions.


As i said in the other email, you should not use them in global scope of
the file!


Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
* Alternative URL: http://run.to/noicys

RE: [Dev-C++] Help me with debugging pls.

[Ioannis V. <no...@ho...>]

> -----Original Message-----
> From: Ramana Kumar [mailto:ra...@my...] 
> Sent: Monday, August 05, 2002 2:30 PM
> To: Ioannis Vranos; C++
> Subject: RE: [Dev-C++] Help me with debugging pls.
> 
> 
> Just one comment, Ioannis, writing the following:
> 
> using namespace std;
> 
> completely defeats the purpose of namespaces, as it just 
> includes everything
> within the std namespace, including those things that are not needed.
> Instead, I suggest writing:
> 
> using std::cout;
> using std::system;
> //etc
> 
> at the top of whichever file needs these functions.


:) Well the using std::thing is elegant when used for only 2-3 names.
Here indeed we could do that since we use only cout, endl, and
getchar().


The using namespace std; is an attempt to defeat the namespace system
when we use it in global scope (as many folks do) and i think everyone
can realise that. Well i am using it in local scope.


So in summary, use using std::thing when there are only 2-4 names and
using namespace std; when there are more. And these, in as small scope
as possible.


So, the using namespace something; and using something::thing are not
prohibited in local scopes. :)



Ioannis

* Ioannis Vranos
* Programming pages: http://www.noicys.cjb.net
* Alternative URL: http://run.to/noicys



> 
> -----Original Message-----
> From: dev...@li...
> [mailto:dev...@li...]On Behalf Of Ioannis
> Vranos
> Sent: Thursday, 1 August 2002 7:37 PM
> To: dev...@li...
> Subject: RE: [Dev-C++] Help me with debugging pls.
> 
> 
> I do not know the GDB thing but i have to make your code ANSI 
> C++ compliant.
> :)
> 
> 
> Ioannis
> 
> 
> 
> -----Original Message-----
> From: dev...@li...
> [mailto:dev...@li...] On Behalf Of Vaclav
> Kremen
> Sent: Wednesday, July 31, 2002 5:44 PM
> To: dev...@li...
> Subject: [Dev-C++] Help me with debugging pls.
> 
> 
> Hello all,
> here is my short code:
> 
> #include <iostream.h>
> 
> #include <iostream>
> 
> #include <stdio.h>
> 
> Or better: #include <cstdio>
> 
> 
> #include <stdlib.h>
> 
> 
> Or better: #include <cstdlib>
> 
> int main (int argc, char *argv[])
> {
> 
> int argc, char *argv[] are not used, so they are not needed.
> 
> using namespace std;
> 
>     int x = 1000;
> 
>     x = x*x;
>     cout << "Hello World!" << endl;
>     x = 1;
>     cout << "Press ENTER to continue... " << x <<endl;
>     getchar ();
> 
> 
> or better: cin.ignore(); So <cstdio> is not needed.
> 
> 
>     return 0;
> }
> 
> 
> Ioannis
> 
> * Ioannis Vranos
> * Programming pages: http://www.noicys.cjb.net
> * Alternative URL: http://run.to/noicys
>