#define FBGL_IMPLEMENTATION #include "fbgl.h" #include int main(int argc, char *argv[]) { fbgl_t fb; fbgl_init("/dev/fb0", &fb); fbgl_set_bg(&fb, 0xFFFFFF); while (1) { if (fbgl_check_esc_key()) { printf("pressed"); fbgl_set_bg(&fb, 0x000000); } } return 0; }