Message-Id: <199910311638.KAA12881@lakdiva.slt.lk>
From: "Kalum Somaratna aka Grendel" <kalum AT ToughGuy DOT net>
To: djgpp AT delorie DOT com
Date: Sun, 31 Oct 1999 10:37:29 +0600
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Subject: Re: How can I get this program to compile?
CC: arg AT whangomatic DOT freeserve DOT co DOT uk
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On 30 Oct 99, at 20:46, Andrew R. Gillett 
<arg AT whangomatic DOT freeserve DOT co DOT uk> wrote:

>  I am pretty sure the test program below would work on 
> 2.8.1, but on 2.9.5 it doesn't compile:
> 
> 
> #include <allegro.h>
> 
> #include <string>
> 
> int main (void)
> {
>     string my_string = "Hello";
> 
>     allegro_init();
> 
>     set_gfx_mode (GFX_AUTODETECT, 320, 200, 0, 0);
> 
>     textout (screen, font, my_string.c_str(), 0, 0, 
> makecol(255,255,255));
> 
>     exit (0);
> }

Hello Andrew!
 I am not a C++ programmer but I think the problem is that the 
textout function needs a char * as it's third argument while 
my_string.c_str()  returns  const char *  .

So the easiest thing would be to cast the value to char * as follows.

textout (screen, font, (char *)my_string.c_str(), 0, 0, 
makecol(255,255,255));

Because after making this change I compiled your program using 
gcc 2.95.1 using 'gcc test.cpp -o test.exe -Wall -lalleg -lstdcx'    
and it compiled OK.

Maybe it would work on 2.81 because 2.81 is less strict in certain 
area's of C++.

BTW you might need a getch() to wait for a keypress after textout 
because otherwise the program will exit to dos (and textmode) and 
you won't see it's output.

Also you might try searching the mail archives at DJ's site 
<www.delorie.com> because there was a discussion on this list 
about const char * and Allegro about a month ago(if I remember 
correctly).

Bye!
Kalum