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allegro_error(3alleg4) Allegro manual allegro_error(3alleg4)

NAME

allegro_error - Stores the last Allegro error message.

SYNOPSIS

#include <allegro.h>

extern char allegro_error[ALLEGRO_ERROR_SIZE];

DESCRIPTION

Text string used by set_gfx_mode(), install_sound() and other functions to report error messages. If they fail and you want to tell the user why, this is the place to look for a description of the problem. Example:


void abort_on_error(const char *message)
{
if (screen != NULL)
set_gfx_mode(GFX_TEXT, 0, 0, 0, 0);

allegro_message("%s.\nLast Allegro error `%s'\n",
message, allegro_error);
exit(-1);
}
...
if (some_allegro_function() == ERROR_CODE)
abort_on_error("Error calling some function!");

SEE ALSO

set_gfx_mode(3alleg4), install_sound(3alleg4)

version 4.4.3 Allegro