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Problem with mouse events in a custom NSControl subclass
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Problem with mouse events in a custom NSControl subclass


  • Subject: Problem with mouse events in a custom NSControl subclass
  • From: Stephen Blinkhorn <email@hidden>
  • Date: Fri, 11 Dec 2009 17:57:13 -0600

Hello all,

Reasonably descriptive title. I'm writing the Cocoa GUI for an audio unit plugin and I've run into a problem. In one host app I'm not receiving mouse events in my custom sliders/buttons etc. My drop down menus work fine but they are subclasses of NSPopUpMenu and NSPopUpMenuCell. The sliders are just NSControl subclasses. If I click on a text field then the containing window gets the focus and all my controls work as expected. I think the host should be setting the containing window's focus but it isn't and other plugins work ok in that host.

Curiously, my controls receive mouse wheel events without problems and standard NSSlider controls work too. So I suppose my question is: what are NSPopUpMenu and NSSlider doing to receive mouse events that I'm not doing? Any ideas? Also, double clicks are registering mouse events to some extent.

Thanks,
Stephen _______________________________________________


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