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al_set_d3d_device_restore_callback - Allegro 5 API
#include <allegro5/allegro_direct3d.h> void al_set_d3d_device_restore_callback( void (*callback)(ALLEGRO_DISPLAY *display))
The callback will be called whenever a D3D device that has been reset is restored. In the callback you should restore any d3d resources you have created yourself. The callback receives the affected display as a parameter. Pass NULL to disable the callback.