ON Keyword
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ON Keyword
■ The ON keyword is used with various event-trapping statements to either:
• Specify a trap • Enable a trap
■ The ON keyword may also be used to enable error handling.
See: ◄ON ERROR Statement►
■ The following table summarizes the use of ON event statements:
Specifies a Trap Type of Event Enables a Trap
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◄ON COM► Communications port ◄COM ON►
◄ON KEY► Keystroke ◄KEY ON►
◄ON PEN► Lightpen ◄PEN ON►
◄ON PLAY► Background-music queue ◄PLAY ON►
◄ON STRIG► Joystick trigger ◄STRIG ON►
◄ON TIMER► Timer ◄TIMER ON►
◄ON UEVENT► User-defined ◄UEVENT ON►
■ With the exception of ON KEY and KEY ON, these event statements can be
used with object-specific events. See: ◄Object Events Summary►
See: ◄Error/Event Trapping Summary►