switch (code){
        // TODO(allen): Find the canonical list of these things.
        case 0x007F: c = key_back; break;
        case 0xF700: c = key_up; break;
        case 0xF701: c = key_down; break;
        case 0xF702: c = key_left; break;
        case 0xF703: c = key_right; break;
        case 0xF728: c = key_del; break;
        case 0xF729: c = key_home; break;
        case 0xF72B: c = key_end; break;
        case 0xF72C: c = key_page_up; break;
        case 0xF72D: c = key_page_down; break;
        case 0x001B: c = key_esc; break;

        case 0xF704: c = key_f1; break;
        case 0xF705: c = key_f2; break;
        case 0xF706: c = key_f3; break;
        case 0xF707: c = key_f4; break;

        case 0xF708: c = key_f5; break;
        case 0xF709: c = key_f6; break;
        case 0xF70A: c = key_f7; break;
        case 0xF70B: c = key_f8; break;

        case 0xF70C: c = key_f9; break;
        case 0xF70D: c = key_f10; break;
        case 0xF70E: c = key_f11; break;
        case 0xF70F: c = key_f12; break;

        case 0xF710: c = key_f13; break;
        case 0xF711: c = key_f14; break;
        case 0xF712: c = key_f15; break;
        case 0xF713: c = key_f16; break;
    }