Catch 'clipboard already open' errors in editors

Apparently following commits have not fixed the problem completely,
because it still happens (although not so often).

changeset: 2019:b8f795bdfe9f
user: Andrey Skvortsov <andrej.skvortzov@gmail.com>
date: Fri May 25 17:40:29 2018 +0300
summary: fix hangs on mouse selection in case if wxPython uses wxWidgets with GTK3+ support

changeset: 2018:5ce6d08ff2c7
user: Andrey Skvortsov <andrej.skvortzov@gmail.com>
date: Fri May 25 17:23:15 2018 +0300
summary: make clipboard open minimal time as wxPython documentation recommends

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#Encoding of BACnet Object Types;;;

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#Code;Object Type;;

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0;Analog Input;;

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1;Analog Output;;

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2;Analog Value;;

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3;Binary Input ;;

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4;Binary Output;;

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5;Binary Value;;

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6;Calendar;;

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7;Command;;

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8;Device;;

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9;Event-Enrollment;;

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10;File;;

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11;Group;;

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12;Loop;;

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13;Multistate Input;;

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14;Multistate Output

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15;Notification Class

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16;Program

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17;Schedule

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18;Averaging

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19;Multistate Value

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20;Trend Log

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21;Life Safety Point

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22;Life Safety Zone

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23;Accumulator

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24;Pulse Converter