There is an unwanted system beep on Mac when handling arrow keys. How do I eliminate the noise?

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There is an unwanted system beep on Mac when handling arrow keys. How do I eliminate the noise?

//FMX TViewport3D can respond to keyboard:
Viewport3D.CanFocus := True;
Viewport3D.SetFocus;
Viewport3D.OnKeyUp := HandleKeyUp;

The arrow keys work on both Windows and Mac, but Mac keeps playing the sound.

Comments

  1. Sam Shaw (è•­æ²–)January 10, 2015 at 7:31 AM

    Just a very rough guess, It seems related to this:
    http://apple.stackexchange.com/questions/23981/command-control-arrow-beeps-plays-alert-sound-in-lion

    ??

    ReplyDelete
  2. Gustav SchubertJanuary 10, 2015 at 7:42 AM

    "So when you hear the audible bell it often means that you are trying to do something that is not possible (i.e. typing a key command that has no meaning for the current application)."

    But arrow keys have a meaning in my application. I looked for something like Handled := True, but  there is none. Perhaps there should be?

    http://www.cocoabuilder.com/archive/cocoa/154121-silencing-beeps-from-nonexistent-key-equivalents.html

    ReplyDelete
  3. Gustav SchubertAugust 3, 2017 at 1:17 AM

    plus.google.com - Gustav Schubert - Google+

    ReplyDelete

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