154
Chapter 9
Event Polling and Error/Event Trapping
CONTENTS
9.1 Overview...................................................................................................... 155
9.2 Event Polling................................................................................................ 156
[ 1 ] Programming sample .............................................................. 156
[ 2 ] I/O devices capable of being monitored by the event polling.. 157
9.3 Error Trapping.............................................................................................. 158
[ 1 ] Overview ................................................................................. 158
[ 2 ] Programming for trapping errors ............................................. 159
9.4 Event (of Keystroke) Trapping..................................................................... 160
[ 1 ] Overview ................................................................................. 160
[ 2 ] Programming for trapping keystrokes ..................................... 160
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