- static unsigned char button_dropdown_bits[] = { 0xe0, 0xf1, 0xfb };
- static unsigned char overflow_bits[] = { 0x80, 0xff, 0x80, 0xc1, 0xe3, 0xf7 };
+ static const unsigned char button_dropdown_bits[] = { 0xe0, 0xf1, 0xfb };
+ static const unsigned char overflow_bits[] = { 0x80, 0xff, 0x80, 0xc1, 0xe3, 0xf7 };