al_get_d3d_device - Allegro 5 API

       Returns the Direct3D device of the display.  The return value is undefined if the display was not created
       with the Direct3D flag.

       Returns: A pointer to the Direct3D device.

Allegro reference manual                                                              al_get_d3d_device(3alleg5)

       al_get_d3d_device - Allegro 5 API

              #include <allegro5/allegro_direct3d.h>

              LPDIRECT3DDEVICE9 al_get_d3d_device(ALLEGRO_DISPLAY *display)