Difference between revisions of "ON KEY(n)"

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{{Cl|KEY(n)|KEY(1) ON}}
 
{{Cl|KEY(n)|KEY(1) ON}}
{{Cl|ON KEY (1)}} {{Cl|GOSUB}} trap
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{{Cl|ON KEY(n)|ON KEY}}(1) {{Cl|GOSUB}} trap
 
{{Cl|PRINT}} "Press F1 to quit!"
 
{{Cl|PRINT}} "Press F1 to quit!"
 
{{Cl|DO}}:{{Cl|LOOP}}          'never ending loop
 
{{Cl|DO}}:{{Cl|LOOP}}          'never ending loop

Revision as of 21:35, 5 November 2010

The ON KEY(n) statement defines a line number or label to go to when a specified key is pressed.


Syntax: ON KEY (n) GOSUB {linelabel|linenumber}


Description:

1-10 for F1-F10 function keys
11, 12, 13 and 14 for UP, LEFT, RIGHT and DOWN numberpad arrows respectively.
15-25 for user-defined keys. See: Keyboard scancodes
30 and 31 for F11 and F12 function keys


Example:

KEY(1) ON ON KEY(1) GOSUB trap PRINT "Press F1 to quit!" DO:LOOP 'never ending loop trap: PRINT "You pressed F1 like I told you to :)" END RETURN


See also:




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