common.c

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

void abort_example(char const *format, ...);

#ifdef ALLEGRO_POPUP_EXAMPLES

void abort_example(char const *format, ...)
{
    char str[1024];
    va_list args;
    va_start(args, format);
    vsnprintf(str, sizeof str, format, args);
    va_end(args);

    // FIXME: We could check here if Allegro is installed and/or a display is
    // active - but it's probably better if make al_show_native_message_box
    // does that instead and falls back to other means to deliver the message
    // on all platforms (even without A5 installed or a display active).
    al_show_native_message_box(NULL, "Error", "Cannot run example", str, NULL, 0);
    exit(1);
}



#else

void abort_example(char const *format, ...)
{
    va_list args;
    va_start(args, format);
    vfprintf(stderr, format, args);
    va_end(args);
    exit(1);
}

#endif