why doesn't GETKEY work with WAIT (solved)

why doesn't GETKEY work with WAIT (solved) - Printable Version

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why doesn't GETKEY work with WAIT (solved) - StephenG1CMZ - 10-26-2015 07:31 AM

I expected this simple program to buffer key input, allowing tapping ESC to exit: it doesn't when WAIT is included, so I have to exit by holding ON to interrupt the program instead.

Is there a better way?,[Android]

Code:

 LOCAL LIGHTH:="HOLD ON/OFF TO EXIT:GETKEY BROKEN";

 EXPORT LIGHTSTEADY()

 BEGIN

  RECT_P(0,0,320,240,0,#FFh);

  TEXTOUT_P(LIGHTH,0,180);

  REPEAT

  //WAIT(−1);

  UNTIL GETKEY==4 ;//UNRELIABLE

 END;

 EXPORT GETKEYPROB()

 BEGIN

  LIGHTSTEADY();

 END;

RE: why doesn't GETKEY work with WAIT - Didier Lachieze - 10-26-2015 08:24 AM

When you press a key WAIT(-1) returns the key code, you don't need GETKEY after that.
Try to replace:

Code:

  REPEAT

  //WAIT(−1);

  UNTIL GETKEY==4 ;//UNRELIABLE

by:

Code:

  REPEAT UNTIL WAIT(−1)==4 ;

RE: why doesn't GETKEY work with WAIT - Han - 10-26-2015 09:58 AM

WAIT(-1) itself also captures key presses. So if you press [Esc] during the WAIT(-1) timeout period, the keypress is sent to the WAIT command. GETKEY would then have nothing in the buffer to parse. Save the output from WAIT(-1) and use it to test.

RE: why doesn't GETKEY work with WAIT (solved) - StephenG1CMZ - 10-26-2015 12:36 PM

Thanks. I never thought of looking for the key hidden in WAIT.