al_draw_bitmap_region - Allegro 5 API

       Draws a region of the given bitmap to the target bitmap.

       • sx - source x

       • sy - source y

       • sw - source width (width of region to blit)

       • sh - source height (height of region to blit)

       • dx - destination x

       • dy - destination y

       • flags - same as for al_draw_bitmap(3alleg5)

       See al_draw_bitmap(3alleg5) for a note on restrictions on which bitmaps can be drawn where.

       al_draw_bitmap_region - Allegro 5 API

al_draw_bitmap(3alleg5),         al_draw_scaled_bitmap(3alleg5),         al_draw_rotated_bitmap(3alleg5),
       al_draw_scaled_rotated_bitmap(3alleg5)

Allegro reference manual                                                          al_draw_bitmap_region(3alleg5)

              #include <allegro5/allegro.h>

              void al_draw_bitmap_region(ALLEGRO_BITMAP *bitmap,
                 float sx, float sy, float sw, float sh, float dx, float dy, int flags)