Re: nsslider subclass not responding to mouseUp:

FROM : glenn andreas
DATE : Mon Jun 05 20:30:07 2006

On Jun 5, 2006, at 11:19 AM, Daniel Angermeier wrote:

> Hi,
>
> I've subclassed NSSlider and I I want it to perform some additional
> things when my custom instance receives mouse down or mouse up events.

[snip]
>
> upon mouse down on my custom slider, nothing happens. upon mouse up
> "mouse down" is logged.
> what am I doing wrong ?


Other than your expectations of how NSSlider works, nothing.

Basically, NSSlider handles all the tracking within mouse down - it 
waits and loops in there until the mouse is released, which is why, 
when you call super mouseDown: it blocks until the mouse is released 
(at which point you get to your code afterwards that says "mouse down").

See <http://developer.apple.com/documentation/Cocoa/Conceptual/
BasicEventHandling/index.html> for an example of how this is done.


Glenn Andreas                      <email_removed>
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