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Re: [platform-swt-dev] REVERSE?
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I've been looking at MacUtil. I think I understand what REVERSE
*does*, but I don't understand the circumstances which led to its
creation. Andre, can you say some words about this?
I had to find out the hard way that in Carbon drawing of child
widgets of a Composite and hit detection are performed in the same
order. (Normaly drawing is performed back-to-front and hit detection
front-to-back). A consequence of this is that if you have overlapping
widgets hit detection finds widgets that are not visible because they
are occluded by other widgets.
Since I cannot change the drawing order easily, I decide to reverse
the insertion order.
The REVERSE option control this behavior.
(This behavior exists in the toolbox since 1985). It was not
considered a problem if widgets don't overlap (as it is the case in
dialog boxes). However Eclipse uses overlapping widgets and I had to
deal with it. In Jaguar this problem (and lots of other problems)
should go away with the introduction of the HIView (I hope).
--andre
