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Quellcode

#include <allegro.h>

int set_graphic_mode()
{
    set_color_depth (16);

    if (set_gfx_mode(GFX_AUTODETECT_FULLSCREEN, 640, 480, 0, 0) >= 0)
    {
        return 1;
    }

    set_color_depth (15);

    if (set_gfx_mode(GFX_AUTODETECT_FULLSCREEN, 640, 480, 0, 0) >= 0)
    {
        return 1;
    }

    set_color_depth (16);

    if (set_gfx_mode(GFX_AUTODETECT_WINDOWED, 640, 480, 0, 0) >= 0)
    {
        return 1;
    }
    return 0;
}

int main (int argc, char **argv)
{
    allegro_init ();
    install_keyboard ();

    if (!set_graphic_mode ())
    {
        allegro_message ("Unable to set graphic mode");
        exit(0);
    }

    // Laden des Bildes
    BITMAP *logo = load_bitmap("allegro.tga", NULL);

    acquire_screen ();
    clear (screen);

    blit(logo, screen,
         0, 0,
         (SCREEN_W - logo->w)/2, // zentriert
         (SCREEN_H - logo->h)/2, // zentriert
         logo->w, logo->h);

    release_screen ();

    while (!keypressed());
    return 0;
} END_OF_MAIN ();