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Chapter 9
Event Polling and Error/Event Trapping
CONTENTS
CONTENTSCONTENTS
CONTENTS
9.1 Overview.............................................................................................................128
9.2 Event Polling..........................................................................................................129
[ 1 ] Programming sample .........................................................................129
[ 2 ] I/O devices capable of being monitored by the event polling..............130
9.3 Error Trapping ..................................................................................................... 131
[ 1 ] Overview.............................................................................................131
[ 2 ] Programming for trapping errors.........................................................132
9.4 Event (of Keystroke) Trapping.............................................................................133
[ 1 ] Overview.............................................................................................133
[ 2 ] Programming for trapping keystrokes.................................................133
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