dev-cpp-users Mailing List for Dev-C++

I will try that, once I find the sources...

Thanks for your reply!

Your Message: (Sunday, August 03, 2003, 10:51:28 AM)

OB> Dennis Möhlmann wrote:

>> Oops,  didn't  know the linker can any other error messages than this one (never
>> received a different error so far...)
>> 
>> (hope this doesn't get wrapped...)
>> 
>> g++.exe ../_obj/BlackMagic3D.o ../_obj/world.o ../_obj/entity.o ../_obj/engine.o ../_obj/model.o ../_obj/winmsg.o ../_obj/viewport.o ../_obj/keyboard.o ../_obj/renderer.o ../_obj/image.o  -o
>> "..\_exe\BlackMagic3D.exe" -L"C:/Programme/Dev-Cpp/lib" -mwindows -lopengl32 -lglu32 -lglaux -lwinmm -ljpeg
>> 
>> ../_obj/image.o(.text+0x68e):image.cpp: undefined reference to `jpeg_std_error(jpeg_error_mgr*)'
>> ../_obj/image.o(.text+0x6ad):image.cpp: undefined reference to `jpeg_CreateDecompress(jpeg_decompress_struct*, int, unsigned)'
>> ../_obj/image.o(.text+0x6c2):image.cpp: undefined reference to `jpeg_stdio_src(jpeg_decompress_struct*, _iobuf*)'
>> ../_obj/image.o(.text+0x6d6):image.cpp: undefined reference to `jpeg_read_header(jpeg_decompress_struct*, int)'
>> ../_obj/image.o(.text+0x6e8):image.cpp: undefined reference to `jpeg_start_decompress(jpeg_decompress_struct*)'
>> ../_obj/image.o(.text+0x7f0):image.cpp: undefined reference to `jpeg_read_scanlines(jpeg_decompress_struct*, unsigned char**, unsigned)'
>> ../_obj/image.o(.text+0x828):image.cpp: undefined reference to `jpeg_finish_decompress(jpeg_decompress_struct*)'
>> ../_obj/image.o(.text+0x83a):image.cpp: undefined reference to `jpeg_destroy_decompress(jpeg_decompress_struct*)'

OB> Well, it sais, it has undefined references of jpeg functions.
OB> I have no idea though why it has them, as the jpeg library has these 
OB> functions.
OB> Maybe you should try to recompile the jpeg library from the code.

OB> --
OB> Greetings,
OB>    Balázs

-- 
Best regards,
 Dennis                            mailto:lis...@da...

Pukara Rob wrote:
> Since you have worked in windows, could you tell me: time_t or this kind 
> of things are not used in windows? I asked because I open both files: 
> time.h and timeb.h and while time.h seems very complete (with the 
> definition of time_t for instance) , timeb.h seems incomplete. Is there 
> a equivalent of time_t for windows. Is the file timeb.h correct? Or for 
> that matter should I cheat the compiler and make it think we are in 
> windows....hummm. I am confused. Are those files complete? Sorry for so 
> many questions, it is that I want to start working already and I am 
> stuck in the no compilation problem and the Aria guys dont answer me yet :(

Simply include <time.h> or <sys/time.h>, it's all the same, as 
<sys/time.h> actually includes only <time.h>
That's all you need to do. Change the Aria headers directly, or make the 
time.h include yourself, before the Aria includes.

Anyway, what is this "Aria" system, that you use?

--
Greetings,
   Balazs

Hello, Graham.

> My book defines   "/n"       as    new line.
> And defines          " endl "  as    end line.
> But gives me no clue as to what the difference is or when to use which.
> can anyone explain the difference to me ?

Two differences you should know:

  '\n' is new-line to C, and to Unix, but may not be new-line to your OS.
For example, for Windows, "\r\n" is new-line. IIRC, for macs, it's just
'\r'. endl takes care of these platform specific thingies for you (as a
matter of fact, so does '\n' in files opened in text mode in STDIO, but endl
is a more graceful and conformant solution.

  Next, endl makes sure that the text that you've written is flushed. Most
streams have a buffer, so that when you write to them, the connected device
or file is not updated instantly, but the results are stored in memory (this
is for reasons of speed). endl makes sure that they (the files or devices)
are updated.

  If in doubt, use endl. If you're working with raw data (binary files or
such), then you will have to use '\n'. When you start working with binary
files, you should be able to tell the difference anyway, if your book is any
good.

Hope this helps.

--
Abhijit Shylanath
Homepage: http://mudeth.tripod.com/

> Since you have worked in windows, could you tell me: time_t or this kind
of things are not used > in windows? I asked because I open both files:
time.h and timeb.h and while time.h seems very
> complete (with the definition of time_t for instance) , timeb.h seems
incomplete. Is there a
> equivalent of time_t for windows. Is the file timeb.h correct? Or for that
matter should I
> cheat the compiler and make it think we are in windows....hummm. I am
confused. Are those files
> complete? Sorry for so many questions, it is that I want to start working
already and I am
> stuck in the no compilation problem and the Aria guys dont answer me yet
:(

Hello, Pukara.
Try #including <time.h> before all your Aria headers. <time.h> is ANSI, and
is portable. I don't know why they've decided not to work with it on
Windows, but you can try it out anyway.

Specifically:
* time_t is legal.
* timeb.h is the header for the Unix ftime() function, and is not ANSI.

Here's a dump of what my reference says about ftime():

-- Cut here --
Syntax

#include <sys\timeb.h>
void ftime(struct timeb *buf)

Description

Stores current time in timeb structure.
On UNIX platforms ftime is available only on System V systems.
ftime determines the current time and fills in the fields in the timeb
structure pointed to by buf. The timeb structure contains four fields: time,
millitm, _timezone, and dstflag:

struct timeb {
   long time ;
   short millitm ;
   short _timezone ;
   short dstflag ;

};

time	provides the time in seconds since 00:00:00 Greenwich mean time (GMT)
January 1 1970.
millitm	is the fractional part of a second in milliseconds.
_timezone	is the difference in minutes between GMT and the local time. This
value is computed going west from GMT. ftime gets this field from the global
variable _timezone which is set by tzset.
dstflag	is set to nonzero if daylight saving time is taken into account
during time calculations.

Note:	ftime calls tzset. Therefore it isn't necessary to call tzset
explicitly when you use ftime.

Return Value

None.

Borland C++ 5.0 Programmer's Guide
-- Cut here --

--
Abhijit Shylanath
Homepage: http://mudeth.tripod.com/

> thanks for your quick reply. The compiler itself is a modified
> gcc for ARM processors. The SDKs  which contains the compilers

If it is a modified gcc, which way is it modified in? Does it take the same
command-line arguments as GCC? Does it output errors in the same way? In
other words, is the interface the same? If it is, it should work in Dev,
without the need for any hack. Only if the interface is different (different
output format, different arguments, different filenames, etc.), do we have
to think about other ways.

I presume that you've tried it and failed?

> http://www.symbian .com/developer/SDKs.html
>
> (purpose of the SDKs is integration with Metroworks Codewarrior IDE)
>
> The downloads are huge and a big hassle to install !
>
> In case you choose to install the SDKs, do not install the
> emulator for the UIQ-SDK, beacuse it requires the Metroworks IDE.
> Otherwise I can sent you (next week) just the (automatically
> generated) makefiles for some example projects, maybe this is
> enough, and you do not need to install the SDKs. What do you think ?

Yes, I'll look at those first, since I am horrified at the prospect of a
huge download; I'm a poor little dial-up user. :'-(

I will need a log of a compilation session also (along with the makefile for
that session).

--
Abhijit Shylanath
Homepage: http://mudeth.tripod.com/

Yes, I found those settings soon after I sent the mail... but the point
of my e-mail is still valid though... I think the _default_ behaviour,
the default shortcuts, should be changed... without the user having to
change it him/herself first. The shortcuts Ctrl+F4 and Alt+F4 have a
clearly defined behaviour for all Windows applications, and deviating
from that is frustrating to the user.


-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Carlos
Garc=EDa del Monte
Sent: Sunday, August 03, 2003 5:52 PM
To: OROSZI Bal=E1zs
Cc: dev...@li...
Subject: Re: [Dev-C++] Default shortcut change


You can change it in Tools->configure shortcuts.

OROSZI Bal=E1zs wrote:

> P.D. van Zelst wrote:
>
>> I wonder if this will get considered at all, but anyway. I find the=20
>> default shortcut for closing the current file quite annoying (I don't

>> even know if it's customizable)... Alt+F4 is used throughout Windows=20
>> for closing the entire application, and Ctrl+F4 is used (within MDI=20
>> apps) for closing the current MDI child window... it's not proper=20
>> style for
>> Dev-C++ to go ahead and switch those around.. using Alt+F4 for=20
>> Dev-C++ closing a
>> file (and I can't seem to find a shortcut for closing the=20
>> application). I wonder if this could be changed to the default=20
>> Windows behaviour...
>> Alt+F4 for closing the application, Ctrl+F4 for closing the current
>> file.
>
>
> I also find this VERY annoying. I hope the devs will fix it sometime.
>
> --
> Greetings,
>   Bal=E1zs
>
>
>
>
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You can change it in Tools->configure shortcuts.

OROSZI Balázs wrote:

> P.D. van Zelst wrote:
>
>> I wonder if this will get considered at all, but anyway. I find the
>> default shortcut for closing the current file quite annoying (I don't
>> even know if it's customizable)... Alt+F4 is used throughout Windows for
>> closing the entire application, and Ctrl+F4 is used (within MDI apps)
>> for closing the current MDI child window... it's not proper style for
>> Dev-C++ to go ahead and switch those around.. using Alt+F4 for closing a
>> file (and I can't seem to find a shortcut for closing the application).
>> I wonder if this could be changed to the default Windows behaviour...
>> Alt+F4 for closing the application, Ctrl+F4 for closing the current
>> file.
>
>
> I also find this VERY annoying. I hope the devs will fix it sometime.
>
> -- 
> Greetings,
>   Balázs
>
>
>
>
> -------------------------------------------------------
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>

Thank you for the quick answer:

 
>I dunno.
>What exactly is this library, that you are working with?

Well it says: 
ArLog is a utility class to log all messages from Aria to a choosen
   destintation. Messages can be logged to stdout, stderr, a file, and
   turned off completely. Logging by default is set to stdout. The level
   of logging can be changed as well. Allowed levels are Terse, Normal,
   and Verbose. By default the level is set to Normal.

Aria is the system I am using.
\\\\\\\\\\\\\\\\\\\\\\\\\\\
 
Since you have worked in windows, could you tell me: time_t or this kind of things are not used in windows? I asked because I open both files: time.h and timeb.h and while time.h seems very complete (with the definition of time_t for instance) , timeb.h seems incomplete. Is there a equivalent of time_t for windows. Is the file timeb.h correct? Or for that matter should I cheat the compiler and make it think we are in windows....hummm. I am confused. Are those files complete? Sorry for so many questions, it is that I want to start working already and I am stuck in the no compilation problem and the Aria guys dont answer me yet :(
 
thanks a lot
 
 

OROSZI_Bal#30169;s <or...@vp...> wrote:
 


Yes, as you see, it tells you, that time_t is not declared. Which means, 
that (assuming you have -DWIN32 on command line) sys/timeb.h is not 
going to be good for you. I suppose, that they used MSVC for the 
library's Windows port, and probably sys/timeb.h worked well for them. 
It is only my guess though.
Anyway, if you look at , you'll notice, that it actually 
includes , which has time_t.
So what you need is: 

I guess you already noticed all the above, as you asked about the 
difference details. I cannot tell you that, as I have never worked with 
time stuff under linux. Maybe a linux guru here can tell you more.

I hope this helps.

--
Greetings,
Bal#30169;s




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airam wrote:
> 
> #include <time.h>
> #include <stdlib.h>
> #include <stdio.h>
> 
> main()
> {
>   int rolls=1;
>   char tel[100];
> 
>   srand((unsigned int)time((time_t *)NULL));
>   while(rolls--)
>   {
>     sprintf(tel,"telnet %d.%d.%d.%d",
> (rand()%254)+1,(rand()%254)+1,(rand()%254)+1,(rand()%254)+1);
> 
>   }
>   system("tel");
>   return 0;
> }

You're sending your system "tel" but unless you have a program
called "tel" you get what you got on your system.
Try:

system(tel);

Dennis Möhlmann wrote:

> Oops,  didn't  know the linker can any other error messages than this one (never
> received a different error so far...)
> 
> (hope this doesn't get wrapped...)
> 
> g++.exe ../_obj/BlackMagic3D.o ../_obj/world.o ../_obj/entity.o ../_obj/engine.o ../_obj/model.o ../_obj/winmsg.o ../_obj/viewport.o ../_obj/keyboard.o ../_obj/renderer.o ../_obj/image.o  -o "..\_exe\BlackMagic3D.exe" -L"C:/Programme/Dev-Cpp/lib" -mwindows -lopengl32 -lglu32 -lglaux -lwinmm -ljpeg
> 
> ../_obj/image.o(.text+0x68e):image.cpp: undefined reference to `jpeg_std_error(jpeg_error_mgr*)'
> ../_obj/image.o(.text+0x6ad):image.cpp: undefined reference to `jpeg_CreateDecompress(jpeg_decompress_struct*, int, unsigned)'
> ../_obj/image.o(.text+0x6c2):image.cpp: undefined reference to `jpeg_stdio_src(jpeg_decompress_struct*, _iobuf*)'
> ../_obj/image.o(.text+0x6d6):image.cpp: undefined reference to `jpeg_read_header(jpeg_decompress_struct*, int)'
> ../_obj/image.o(.text+0x6e8):image.cpp: undefined reference to `jpeg_start_decompress(jpeg_decompress_struct*)'
> ../_obj/image.o(.text+0x7f0):image.cpp: undefined reference to `jpeg_read_scanlines(jpeg_decompress_struct*, unsigned char**, unsigned)'
> ../_obj/image.o(.text+0x828):image.cpp: undefined reference to `jpeg_finish_decompress(jpeg_decompress_struct*)'
> ../_obj/image.o(.text+0x83a):image.cpp: undefined reference to `jpeg_destroy_decompress(jpeg_decompress_struct*)'

Well, it sais, it has undefined references of jpeg functions.
I have no idea though why it has them, as the jpeg library has these 
functions.
Maybe you should try to recompile the jpeg library from the code.

--
Greetings,
   Balázs

#include <time.h>
#include <stdlib.h>
#include <stdio.h>

main()
{
  int rolls=1;
  char tel[100];
         
  srand((unsigned int)time((time_t *)NULL));
  while(rolls--)
  {
    sprintf(tel,"telnet %d.%d.%d.%d", 
(rand()%254)+1,(rand()%254)+1,(rand()%254)+1,(rand()%254)+1);
    
  }
  system("tel");
  return 0;
}



i have the following error
'tel' is not recognized as an internal  or external command,operable 
program or batch file!!!
some help????

P.D. van Zelst wrote:

> It's fixed within a matter of seconds, it's only a matter of will :P
> I installed Delphi 7 myself, and downloaded the source of Dev-C++, but
> didn't feel like getting into the details of yet another project :) A
> while ago I used Borland C++Builder for my job (was company policy.. I
> don't like C++Builder nor Delphi at all), and I more or less know how
> those products work... it's just a matter of changing one property for a
> control somewhere, and all the irritations are gone :)

Okay, but I for me, it also a matter of money, as I don't have Delphi.
Also, it would be better, if it was fixed "offically".

--
Greetings,
   Balázs

Oops,  didn't  know the linker can any other error messages than this one (never
received a different error so far...)

(hope this doesn't get wrapped...)

g++.exe ../_obj/BlackMagic3D.o ../_obj/world.o ../_obj/entity.o ../_obj/engine.o ../_obj/model.o ../_obj/winmsg.o ../_obj/viewport.o ../_obj/keyboard.o ../_obj/renderer.o ../_obj/image.o  -o "..\_exe\BlackMagic3D.exe" -L"C:/Programme/Dev-Cpp/lib" -mwindows -lopengl32 -lglu32 -lglaux -lwinmm -ljpeg

../_obj/image.o(.text+0x68e):image.cpp: undefined reference to `jpeg_std_error(jpeg_error_mgr*)'
../_obj/image.o(.text+0x6ad):image.cpp: undefined reference to `jpeg_CreateDecompress(jpeg_decompress_struct*, int, unsigned)'
../_obj/image.o(.text+0x6c2):image.cpp: undefined reference to `jpeg_stdio_src(jpeg_decompress_struct*, _iobuf*)'
../_obj/image.o(.text+0x6d6):image.cpp: undefined reference to `jpeg_read_header(jpeg_decompress_struct*, int)'
../_obj/image.o(.text+0x6e8):image.cpp: undefined reference to `jpeg_start_decompress(jpeg_decompress_struct*)'
../_obj/image.o(.text+0x7f0):image.cpp: undefined reference to `jpeg_read_scanlines(jpeg_decompress_struct*, unsigned char**, unsigned)'
../_obj/image.o(.text+0x828):image.cpp: undefined reference to `jpeg_finish_decompress(jpeg_decompress_struct*)'
../_obj/image.o(.text+0x83a):image.cpp: undefined reference to `jpeg_destroy_decompress(jpeg_decompress_struct*)'


Your Message: (Saturday, August 02, 2003, 9:20:42 PM)

OB> Dennis Möhlmann wrote:
>> Hello dev-cpp-users,
>> 
>>   I  want  to  compile  code  from  an OpenGL tutorial that uses libjpeg to read
>>   textures from a jpeg file. Unfortunatly, whenever I try to compile the code, I
>>   get linker errors for all libjpeg functions. (I use the -ljpeg parameter.)
>> 
>>   I  searched the Dev C++ forums and a lot of other people seem to have the same
>>   problem,  but none of them received a helpful reply. Maybe somebody here knows
>>   a sollution ?

OB> Yes, I know the solution.
OB> But I'll keep it a secret, until you tell me the errors you get. ;)

OB> --
OB> Greetings,
OB>    Balázs

-- 
Best regards,
 Dennis                            mailto:lis...@da...

woops  ... here is the question :)

I am a newbie fighting my way through a C tutorial

My book defines   "/n"       as    new line.
And defines          " endl "  as    end line.
But gives me no clue as to what the difference is or when to use which.
can anyone explain the difference to me ?

regards
Graham

What was your question?

-----Original Message-----
From: dev...@li...
[mailto:dev...@li...] On Behalf Of Graham
Sent: Saturday, August 02, 2003 9:45 PM
To: dev...@li...
Subject: [Dev-C++] Newbie Q " /n " or " endl" ?



----- Original Message ----- 
From: "Ed Cottrell" <em...@ed...>
To: <dev...@li...>
Sent: Sunday, August 03, 2003 8:31 AM
Subject: RE: [Dev-C++] OT: Connecting to FoxPro databases with a DSN


> Yeoh -
>
> That was perfect! Thank you. I'll be bookmarking your homepage! God 
> bless.
>
> -Ed
>
>
> -----Original Message-----
> From: Yeoh HS [mailto:ye...@ye...]
> Sent: Thursday, July 31, 2003 10:10 PM
> To: Ed Cottrell; dev...@li...
> Subject: Re: [Dev-C++] OT: Connecting to FoxPro databases with a DSN
>
>
> ----- Original Message -----
> From: "Ed Cottrell" <em...@ed...>
> That's just it - I don't know how to connect to the database from C or
C++.
> I know the database end of things (SQL, recordsets, all that); I just
don't
> know how to access the database, at all, with C code. -Ed
>
> Hi,
>
> I have written an example program that shows how to access Microsoft
Access
> databases using Dev-C++ without requiring the end-user to set up a 
> DSN..
>
> By changing the connection string, you should be able to access FoxPro 
> databases.
>
> To download the free example program, the URL is: 
> http://www.yeohhs.com/free/portal.asp
>
> Best Regards,
> Yeoh
> --
> P.S. More free downloads for Dev-C++ users at http://www.yeohhs.com
>
>
>
>
>
>
>
> -------------------------------------------------------
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>




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Small problem.

Room descriptions are strings of variable length. Also the
exit descriptions
are included in the same structure(also varible length
strings). This can
cause the size of a room to vary greatly).

This might still work if I were to put a limit on how long
a room
description could be and padd shorter descriptions to make
it  equal the
standard size

----- Original Message ----- 
From: "Kevin Wood" <ke...@me...>
To: "Dev-C Mailing List"
<dev...@li...>
Sent: Friday, August 01, 2003 7:58 PM
Subject: Re: [Dev-C++] Quick flat-file searching and I/O


> Hi everyone,
>
> I think the quickest way to access a portion of a file is
to structure it,
> then use the fseek function from stdio.
>
> In the case we are considering, the data for each room
should be about the
> same size. For example, if the data for a room is 500
bytes, each room's
> data can be stored in a file at 500 byte intervals, then
accessed using
the
> standard library routines. So to access room 50, you
would set the file
> pointer at 50 x 500.
>                  fseek(room_file_pointer, room_number *
500, SEEK_SET);
>
> If the data for each object is large, several files may
be needed, maybe
> with an index file.
>
> Kev.
>
>
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----- Original Message ----- 
From: "Ed Cottrell" <em...@ed...>
To: <dev...@li...>
Sent: Sunday, August 03, 2003 8:31 AM
Subject: RE: [Dev-C++] OT: Connecting to FoxPro databases with a DSN


> Yeoh -
>
> That was perfect! Thank you. I'll be bookmarking your homepage! God bless.
>
> -Ed
>
>
> -----Original Message-----
> From: Yeoh HS [mailto:ye...@ye...]
> Sent: Thursday, July 31, 2003 10:10 PM
> To: Ed Cottrell; dev...@li...
> Subject: Re: [Dev-C++] OT: Connecting to FoxPro databases with a DSN
>
>
> ----- Original Message -----
> From: "Ed Cottrell" <em...@ed...>
> That's just it - I don't know how to connect to the database from C or
C++.
> I know the database end of things (SQL, recordsets, all that); I just
don't
> know how to access the database, at all, with C code. -Ed
>
> Hi,
>
> I have written an example program that shows how to access Microsoft
Access
> databases using Dev-C++ without requiring the end-user to set up a DSN..
>
> By changing the connection string, you should be able to access FoxPro
> databases.
>
> To download the free example program, the URL is:
> http://www.yeohhs.com/free/portal.asp
>
> Best Regards,
> Yeoh
> --
> P.S. More free downloads for Dev-C++ users at http://www.yeohhs.com
>
>
>
>
>
>
>
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