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

RE: [Dev-C++] Bug in dev-c++ header files

[P.D. v. Z. <pa...@my...>]

And in what way is this a bug in the MingW (NOT Dev-C++, Dev-C++ is
_NOT_ a compiler, only an IDE) headers?
The C++ standard library files are extensionless, using the .h variant
is deprecated. The compiler should tell you this, as a warning, not an
error. The proper way to write what you had is:

#include <fstream>  // Note, NO extension

int main()
{
	// do something with the facilities provided by fstream, for
instance:
	std::ofstream out("blah.txt");
	out << "Howdy" << endl;
	
	return 0;
}


-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Mohamed
Iqbal
Sent: Wednesday, August 27, 2003 8:35 PM
To: Dev-Cpp-Users
Subject: [Dev-C++] Bug in dev-c++ header files


Hi...

Try to compile the following code using Dev-C++ 4.9.8.0.

#include <fstream.h>
int main()
{}

You will receive error!!!!!

Mohammed




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[Dev-C++] Bug in dev-c++ header files

[Mohamed I. <ia...@jo...>]

Hi...

Try to compile the following code using Dev-C++ 4.9.8.0.

#include <fstream.h>
int main()
{}

You will receive error!!!!!

Mohammed

[Dev-C++] Greeting

[medium <me...@se...>]

Hy All !

I'm a new user. I'm a hungarian. Nice to meet you !


medium

[Dev-C++] Problems with gdb and Dev-C++

[Mark L. W. <ma...@al...>]

Hello all!

I recently upgraded to Dev-C++ 4.9.8.1

Since then I have had problems with debugging a project that I am working on
using wxWindows.  I set a breakpoint and hit the debug button and the
program never starts running.  I can halt execution.  If I try Debug--View
CPU window, it locks up Dev-C++ with a recurring message box saying
something like... timeout waiting for gdb response.

Any thoughts?

Thanks in advance!

Mark

Alpha II Service, Inc.
1312 Epworth Avenue
Reynoldsburg, Ohio 43068
614 868-5033 (Voice)
617 812-5838 (Fax)

RE: [Dev-C++] using M$-API do draw

[P.D. v. Z. <pa...@my...>]

Try http://msdn.microsoft.com/ .... you'll notice that there are tons of
drawing functions in the Win32 API.
I'd suggest finding some sort of tutorial on the subject as well though,
since it might take a little learning before you get using the functions
right.

In particular, look for functions like:
Rectangle()  -- draws a rectagle (obviously)
Ellipse()    -- draws ellipses and circles
FillRect()   -- draws a filled rectangle
MoveToEx()   -- moves the current drawing position
LineTo()     -- draws a line from the current drawing position to the
point specified
Polygon()    -- draws a polygon

There are lots more drawing functions, but it would be a little
redundant to list them all, if MSDN already provides an excellent
resource (for MS specific things anyway... it sucks for the standard C
and C++ libraries).

Hope this helped,


Paul


-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of
dein_metzger
Sent: Tuesday, August 26, 2003 9:58 PM
To: dev...@li...
Subject: [Dev-C++] using M$-API do draw


 hi

 How can I draw rectangles, lines and circles using the win-32 API?
Should I do this functions myself or M$ have did them?

 thanks in advance,

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[Dev-C++] using M$-API do draw

[dein_metzger <dei...@ya...>]

 hi

 How can I draw rectangles, lines and circles using the win-32 API?
 Should I do this functions myself or M$ have did them?

 thanks in advance,

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Re: [Dev-C++] Addresses and Pointers

[w.y. <yok...@ve...>]

"w.y." wrote:
> 
> André Macário Barros wrote:
> >
> > /* p4.c */
> > ...
> > 1-int x=16, *p;
> > 2-
> > 3-p=&x;
> > 4-printf(“%d\n”, &*x);
> 
> >   - &* and *& cancel themselves
> >

Ignore what I said previously. I read it wrong. :)

Re: [Dev-C++] Redirection of standard error

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

Hello Esteban and all Dev-C++ users,

Monday, August 25, 2003, 3:45:13 PM, Esteban wrote as follows:

EV> Hi, how can I do to redirect cerr in my programs to get all the errors in a 
EV> text file ?

http://www.cplusplus.com/ref/iostream/ios/rdbuf.html

-- 
regards, Zodiaq

Re: [Dev-C++] Windows Help Files for C++ and API

[<ten...@ne...>]

For gcc go to http://www.mingw.org and search in documentation section. 
I downloaded some time ago the chm format help files, and I don't 
remember if they are in hlp too (if that matters you). No there are chm 
files or postscript or online.
For win32 API, it seems that it's impossible to finde newer versions: 
all I found are always the same. I got the version 5.00.2180.1. And the 
other three I thought could be newer have no differences. The one at 
MingW is from 1999, I've just seen it now.

Alexander Eberspächer wrote:

>Hi list,
>
>i just found out about DevC++'s customizable Help-Menu - i really like
>the feature of opening a help-file and searching in it after prssing F1.
>
>I'm currently searching for a Windows Help file (format: .hlp)
>that offers help for all C++ keywords, the Standard Library, C++'s
>headers and, if possible, the same for C in only one help file.
>Until now, i have only been able to find The GNU C Library Reference
>Manual for C version 0.1 (using vUdpdate), but nothing comparable for
>C++.
>
>I also found a .hlp-file for the Win32 API, but that file is quite old
>(1996), are there any other, newer files around? The file is titled by
>"Microsoft® Win32® Programmer's Reference". I don't think the file i
>already have offers help for the new API calls the newer Windows
>versions introduced (they did do so, right?).
>
>I'd appreciate some help in this case of searching help ;-)
>
>Bye, Alex
>
>
>
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RE: [Dev-C++] Addresses and Pointers

[Ioannis V. <iv...@em...>]

> -----Original Message-----
> From: dev...@li...=20
> [mailto:dev...@li...] On Behalf=20
> Of Andr? Macario Barros
> Sent: Tuesday, August 26, 2003 6:52 AM
> To: Dev-Cpp-Users
> Subject: [Dev-C++] Addresses and Pointers
>=20
>=20
> Dear Users,
>=20
> Please consider the following codes:
>=20
> /* p1.c */
> ...
> 1-int x=3D16, *p;
> 2-
> 3-p=3D&x;
> 5-printf(=93%p\n=94, *&p);



I just got a headache. Let's skip the others and concentrate on the =
point
you ask.



=20
> /* p4.c */
> ...
> 1-int x=3D16, *p;
> 2-
> 3-p=3D&x;
> 4-printf(=93%d\n=94, &*x);
> ...
> --->But p4.c isn=B4t working. The compiler is presenting the=20
> following error
> message:
>    "Invalid type argument of =B4unary=B4"



x is a variable of type int. This means, that the dereference operator *
can't be applied to it. * can be applied only to pointers.






Ioannis Vranos
=20
* Programming pages: http://www.noicys.freeurl.com
* Alternative URL 1: http://run.to/noicys
* Alternative URL 2: http://www.noicys.cjb.net

RE: [Dev-C++] %d and %ld printf output formats

[Ioannis V. <iv...@em...>]

> -----Original Message-----
> From: dev...@li...=20
> [mailto:dev...@li...] On Behalf=20
> Of Andr? Macario Barros
> Sent: Tuesday, August 26, 2003 6:30 AM
> To: Dev-Cpp-Users
> Subject: [Dev-C++] %d and %ld printf output formats
>=20
>=20
> Dear users,
>=20
> Please consider the following C code:
>=20
> ...
>    int var=3D65534;
>=20
> 1-   printf("%d\n", var);
> 2-   var++;
> 3-   printf("%d\n", var);
> 4-   var*=3D1000;
> 5-   printf("%d\n", var);
> 6-   var++;
> 7-   printf("%d\n", var);
> ...
>=20
> I though that above 65535 (or 32767!) I would need the %ld=20
> output format,
> but It wasn=B4t necessary.



%d specifies that the argument is of type int. The limits of type int =
are
implementation-specific. In this case you printf() the value of var =
which is
an int, so %ld shouldn't be used.



> Even in lines 5 and 7. I though the 2 complement would start=20
> presenting the
> complement values.


?


>=20
> Does anybody can explain what happend?


What was expected to happen. You printf() the stored values in decimal
format.






Ioannis Vranos
=20
* Programming pages: http://www.noicys.freeurl.com
* Alternative URL 1: http://run.to/noicys
* Alternative URL 2: http://www.noicys.cjb.net

RE: [Dev-C++] Redirection of standard error

[P.D. v. Z. <pa...@my...>]

I think this has already been answered/discussed before, but anyway,
here goes:

#include <iostream>
#include <fstream>

int main()
{
	std::ofstream out("somefile.txt");
	std::streambuf* buf =3D out.rdbuf();
	std::cerr.rdbuf(buf);
	cerr << "This will get written to 'somefile.txt', instead of
stderr" << endl;
	return 0;
}



-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Esteban
Valverde
Sent: Monday, August 25, 2003 3:45 PM
To: dev...@li...
Subject: [Dev-C++] Redirection of standard error


Hi, how can I do to redirect cerr in my programs to get all the errors
in a=20
text file ?

thanks, Esteban

_________________________________________________________________
=BFEst=E1s buscando un auto nuevo?  http://www.yupimsn.com/autos/



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Re: [Dev-C++] Virtual Functions and Command system

[Hossein H. <ult...@em...>]

Dear David,

> class A {
> public:
>   virtual void do_xxx(void)
>   {
>      //code
>   }
> }
>  
> class A_derivative : public A
> {
>   void do_xxx(void)
>   {
>     //Some other code.
>   }
> }
>  
> Assume I have a object of type A_derivative.
>  
> If I want the code for do_xxx to call do_xxx in class A first the only option I seem to have is add A::do_xxx() as the first line in A_derivative::do_xxx

Yep, I think.

> I have a command class which contains a string as the key and a function pointer as the data. I am being told about using "command objects" that would handle the actual execution of the command. Does anyone have any experience in this and if so could you give some example code or point me to a tutorial. The concept seems useful I am getting stuck when it comes to implementing it (Should I overload the () operator?)

The best tuterial which has got free-to-download code as well is
"Modern C++ Design." 

The following is its complete bibliography:

Alexandrescu A., Modern C++ Design: Generic Programming and
Design Patterns Applied, Addison-Wesley, 2001, 
ISBN: 0-201-70431-5.

Regards,
--Hossein
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Re: [Dev-C++] Addresses and Pointers

[w.y. <yok...@ve...>]

André Macário Barros wrote:
> 
> /* p4.c */
> ...
> 1-int x=16, *p;
> 2-
> 3-p=&x;
> 4-printf(“%d\n”, &*x);


>   - &* and *& cancel themselves
> 
> --->But p4.c isn´t working. The compiler is presenting the following error
> message:
>    "Invalid type argument of ´unary´"

The way I read &*x is first x is dereferenced, so it becomes

&16

and you cannot use the 'address of' operator & on a number, 16,
so you get an error.

Re: [Dev-C++] %d and %ld printf output formats

[w.y. <yok...@ve...>]

André Macário Barros wrote:
> 
>    int var=65534;
> 
> 1-   printf("%d\n", var);
> 2-   var++;
> 3-   printf("%d\n", var);
> 4-   var*=1000;
> 5-   printf("%d\n", var);
> 6-   var++;
> 7-   printf("%d\n", var);
> ...
> 
> I though that above 65535 (or 32767!) I would need the %ld output format,
> but It wasn´t necessary.

int has been 32 bits for some time now. :)

Try setting var to 0x7FFFFFFF and you will see what you
expected.

[Dev-C++] Windows Help Files for C++ and API

[<al...@ne...>]

Hi list,

i just found out about DevC++'s customizable Help-Menu - i really like
the feature of opening a help-file and searching in it after prssing F1.

I'm currently searching for a Windows Help file (format: .hlp)
that offers help for all C++ keywords, the Standard Library, C++'s
headers and, if possible, the same for C in only one help file.
Until now, i have only been able to find The GNU C Library Reference
Manual for C version 0.1 (using vUdpdate), but nothing comparable for
C++.

I also found a .hlp-file for the Win32 API, but that file is quite old
(1996), are there any other, newer files around? The file is titled by
"Microsoft® Win32® Programmer's Reference". I don't think the file i
already have offers help for the new API calls the newer Windows
versions introduced (they did do so, right?).

I'd appreciate some help in this case of searching help ;-)

Bye, Alex

[Dev-C++] Addresses and Pointers

[<and...@su...>]

Dear Users,

Please consider the following codes:

/* p1.c */
...
1-int x=16, *p;
2-
3-p=&x;
5-printf(“%p\n”, *&p);
...

/* p2.c */
...
1-int x=16, *p;
2-
3-p=&x;
5-printf(“%d\n”, &*p);
...

/* p3.c */
...
1-int x=16, *p;
2-
3-p=&x;
4-printf(“%p\n”, *&x);
...

/* p4.c */
...
1-int x=16, *p;
2-
3-p=&x;
4-printf(“%d\n”, &*x);
...

Theese pieces of code were presented to show the relashionship between:
  -&x/p and x/*p
  -hexadecimal conversion from one value to another (%p and %d)
  - &* and *& cancel themselves

--->But p4.c isn´t working. The compiler is presenting the following error
message:
   "Invalid type argument of ´unary´"


Regards
Andre

[Dev-C++] %d and %ld printf output formats

[<and...@su...>]

Dear users,

Please consider the following C code:

...
   int var=65534;

1-   printf("%d\n", var);
2-   var++;
3-   printf("%d\n", var);
4-   var*=1000;
5-   printf("%d\n", var);
6-   var++;
7-   printf("%d\n", var);
...

I though that above 65535 (or 32767!) I would need the %ld output format,
but It wasn´t necessary.
Even in lines 5 and 7. I though the 2 complement would start presenting the
complement values.

Does anybody can explain what happend?

Regards
Andre

RE: [Dev-C++] Where is that documentation? Was Which way is best to pause a console window?

[P.D. v. Z. <pa...@my...>]

In your travels on the Microsoft website, did you also come across
http://msdn.microsoft.com/ ? That's the place to look for such
information... being the "MicroSoft Developer Network". There you can
find out all about the Win32 API (which is the name for most of those MS
DLLs and functions), and much more.


-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Michael
D. Smith
Sent: Tuesday, August 26, 2003 2:47 AM
To: dev...@li...
Subject: [Dev-C++] Where is that documentation? Was Which way is best to
pause a console window?



I'm not a very new beginner (not an old pro but not "very" new either:)
and 
I also do not know where to find "complete" documentation of the
libraries, 
and especially the M$ DLL's and their functions, methods, objects
whatever 
they're called this week in this setting.

I know the Micro$oft stuff is on their website, I've been there, I've
read 
for hours, maybe days, I can't find it. Give me a URL :)

For instance, how is a virtual folder (Recycle bin is one) accessed.
I've 
seen unlink (which is I believe a UNIX function and might not be
portable 
anyway), but most Windows users expect deleted files not to go away but
to 
go to the recycle bin. It's in user32.dll and the function is 
GetDesktopHandle ( I think:) but "complete" documentation of how to make

use of those disjointed facts still eludes me.

And of course not just that. I want access to everything :)

Any help appreciated.

ms


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>To: <dev...@li...>
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main() { 
> printf
>         (" My first program in Dev c++.\n"); return 0; } [...]
>         Content analysis details:   (0.20 points, 5 required)
>         FROM_ENDS_IN_NUMS  (0.7 points)  From: ends in numbers
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>
>
>Here is my code
>
>#include <stdio.h>
>int main()
>{
>printf  (" My first program in Dev c++.\n");
>
>
>return 0;
>}
>
>also in dev c++ how do you learn about those libraries, stdio.h, 
>iostream etc? Is it in the help files? Using dev c++  4.9.8.1
>
>Very new beginner
>
>Thanks for all your help :)
>
>Eric
>
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[Dev-C++] Where is that documentation? Was Which way is best to pause a console window?

[Michael D. S. <for...@hi...>]

I'm not a very new beginner (not an old pro but not "very" new either:) and 
I also do not know where to find "complete" documentation of the libraries, 
and especially the M$ DLL's and their functions, methods, objects whatever 
they're called this week in this setting.

I know the Micro$oft stuff is on their website, I've been there, I've read 
for hours, maybe days, I can't find it. Give me a URL :)

For instance, how is a virtual folder (Recycle bin is one) accessed. I've 
seen unlink (which is I believe a UNIX function and might not be portable 
anyway), but most Windows users expect deleted files not to go away but to 
go to the recycle bin. It's in user32.dll and the function is 
GetDesktopHandle ( I think:) but "complete" documentation of how to make 
use of those disjointed facts still eludes me.

And of course not just that. I want access to everything :)

Any help appreciated.

ms


>From: "Eric Churches" <ec...@ih...>
>To: <dev...@li...>
>X-Mailer: Microsoft Outlook, Build 10.0.4510
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>         Content preview:  Here is my code #include <stdio.h> int main() { 
> printf
>         (" My first program in Dev c++.\n"); return 0; } [...]
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>         FROM_ENDS_IN_NUMS  (0.7 points)  From: ends in numbers
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>Subject: [Dev-C++] Which way is best to pause  a console window?
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>
>
>Here is my code
>
>#include <stdio.h>
>int main()
>{
>printf  (" My first program in Dev c++.\n");
>
>
>return 0;
>}
>
>also in dev c++ how do you learn about those libraries, stdio.h, iostream
>etc? Is it in the help files? Using dev c++  4.9.8.1
>
>Very new beginner
>
>Thanks for all your help :)
>
>Eric
>
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[Dev-C++] Which way is best to pause a console window?

[Eric C. <ec...@ih...>]

 
Here is my code

#include <stdio.h>
int main()
{
printf  (" My first program in Dev c++.\n");


return 0;
}

also in dev c++ how do you learn about those libraries, stdio.h, iostream
etc? Is it in the help files? Using dev c++  4.9.8.1

Very new beginner

Thanks for all your help :)

Eric

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Re: [Dev-C++] Redirection of standard error

[Esteban V. <est...@ho...>]

I´m sorry for not check the old mails first. Thanks P.D., it works well
fine.

Esteban

----- Original Message -----
From: "P.D. van Zelst" <pa...@my...>
To: "'Esteban Valverde'" <est...@ho...>;
<dev...@li...>
Sent: Monday, 25 August, 2003 14:03
Subject: RE: [Dev-C++] Redirection of standard error


I think this has already been answered/discussed before, but anyway,
here goes:

#include <iostream>
#include <fstream>

int main()
{
std::ofstream out("somefile.txt");
std::streambuf* buf = out.rdbuf();
std::cerr.rdbuf(buf);
cerr << "This will get written to 'somefile.txt', instead of
stderr" << endl;
return 0;
}



-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Esteban
Valverde
Sent: Monday, August 25, 2003 3:45 PM
To: dev...@li...
Subject: [Dev-C++] Redirection of standard error


Hi, how can I do to redirect cerr in my programs to get all the errors
in a
text file ?

thanks, Esteban

_________________________________________________________________
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[Dev-C++] Re: VSAM (KSDS datasets)

[William Mc C. <WIL...@ms...>]

Hi Guys:

    Has anyone used C/C++ to build/access/update VSAM datasets? These are=
 KSDS datasets that were created using  a mainframe assemble language on =
the PC. There are 3 alternate index's for each of 4 files.

    If necessary I can always convert the files to DB2 with no problems. =
Has anyone used DB2 (XDB) under C/C++? =20

    I would stay with the mainframe language but I want to use the WINAPI=
  capabilities of C/C++.

    Everyone have a nice day. Thanks!

[Dev-C++] Redirection of standard error

[Esteban V. <est...@ho...>]

Hi, how can I do to redirect cerr in my programs to get all the errors in a 
text file ?

thanks, Esteban

_________________________________________________________________
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Re: [Dev-C++] Virtual Functions and Command system

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

#1 Is this a question or a statement?

#2 "I am being told..." as in a school assignment? What about googling
about the specific term, or maybe oogling through some reference
litterature?

/Per W

On Sun, 24 Aug 2003, David McKen wrote:

> #1
> Assume the following definitions:
>
> class A {
> public:
>   virtual void do_xxx(void)
>   {
>      //code
>   }
> }
>
> class A_derivative : public A
> {
>   void do_xxx(void)
>   {
>     //Some other code.
>   }
> }
>
> Assume I have a object of type A_derivative.
>
> If I want the code for do_xxx to call do_xxx in class A first the only option I seem to have is add A::do_xxx() as the first line in A_derivative::do_xxx
>
> #2
> I have a command class which contains a string as the key and a function pointer as the data. I am being told about using "command objects" that would handle the actual execution of the command. Does anyone have any experience in this and if so could you give some example code or point me to a tutorial. The concept seems useful I am getting stuck when it comes to implementing it (Should I overload the () operator?)
>
> Thanks.
>
>
> ---------------------------------
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