Fix exception on exit in some case, sequel of an earlier cleanup commit I couldn't find back. Disconnecting the event is apparently the way to go. https://wiki.wxpython.org/Surviving%20with%20wxEVT%20KILL%20FOCUS%20under%20Microsoft%20Windows
#Encoding of BACnet Object Types;;;
#Code;Object Type;;
0;Analog Input;;
1;Analog Output;;
2;Analog Value;;
3;Binary Input ;;
4;Binary Output;;
5;Binary Value;;
6;Calendar;;
7;Command;;
8;Device;;
9;Event-Enrollment;;
10;File;;
11;Group;;
12;Loop;;
13;Multistate Input;;
14;Multistate Output
15;Notification Class
16;Program
17;Schedule
18;Averaging
19;Multistate Value
20;Trend Log
21;Life Safety Point
22;Life Safety Zone
23;Accumulator
24;Pulse Converter