ON: Difference between revisions
Jump to navigation
Jump to search
Navigation:
Main Page with Articles and Tutorials
Keyword Reference - Alphabetical
Keyword Reference - By usage
Report a broken link
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
* Set the sub-procedure call for [[KEY(n)]], [[STRIG(n)]] and [[TIMER]] | * Set the sub-procedure call for [[KEY(n)]], [[STRIG(n)]] and [[TIMER]] | ||
* To turn on event trapping for [[ON KEY (n)]], [[ON STRIG (n)]] and [[ON TIMER (n)]]. | * To turn on event trapping for [[ON KEY (n)]], [[ON STRIG (n)]] and [[ON TIMER (n)]]. | ||
* In the case of [[ON ERROR]] the trap is also enabled until a subsequent ON ERROR statement. | * In the case of [[ON ERROR]] the trap is also enabled until a subsequent ON ERROR statement. | ||
| Line 11: | Line 11: | ||
''See also:'' | ''See also:'' | ||
[[ON...GOSUB]], [[ON...GOTO]] | [[ON...GOSUB]], [[ON...GOTO]] | ||
[[OFF]], [[STOP]], [[KEY]] | [[OFF]], [[STOP]], [[KEY]] | ||
Revision as of 02:12, 23 January 2023
ON creates event procedure calls or enables event trapping.
- To turn on event trapping for ON KEY (n), ON STRIG (n) and ON TIMER (n).
- In the case of ON ERROR the trap is also enabled until a subsequent ON ERROR statement.
- ON procedures should be used only in the main program module and not inside of SUB procedures!
- If you have used the $CHECKING:OFF metacommand, $CHECKING:ON will turn on c++ error checking again.
See also: