Re: click through view ?
Re: click through view ?
- Subject: Re: click through view ?
- From: email@hidden
- Date: Mon, 18 Mar 2002 20:46:53 -0800
Can anyone tell me if it possible to implement an NSView that can be
clicked through such that anything view lying 'underneath' can receive
the click unless the subview of the click through view is hit ? I'm
trying to create a view that is essentially transparent yet houses
subviews, so that if the actual view itself is hit the click is ignored
and passed to the next view in the hierarchy unless a subview is hit of
course.
The doc for -[NSView hitTest:] says:
Returns the farthest descendant of the receiver in the view hierarchy
(including itself) that contains aPoint, or nil if aPoint lies
completely outside the receiver. aPoint is in the coordinate system of
the receiver's superview, not of the receiver itself.
This method is used primarily by an NSWindow to determine which NSView
should receive a mouse-down event. You'd rarely need invoke this
method, but you might want to override it to have a view object hide
mouse-down events from its subviews.
Based upon this, I think overriding hitTest: and returning nil when
desired should do what you want. However, I haven't tried; I've
overridden hitTest: for other purposes, but I've never done what you
suggest. A report to the list on your experiences might be nice!
Ben Haller
Stick Software
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