On Apr 24, 2009, at 3:06 PM, Stuart Malin wrote:

I have an NSTextView in a custom view, it is set to resize with the containing view only in the horizontal dimension. When I resize the window, the text view does resize, and it does re-layout its content to fit, both on expanding and shrinking. However, the text view not only changes its frame size height, but repositions itself (changing the y value of its frame's origin). Why does it do this?

You need to read the "Cocoa Drawing Guide" and "View Programming Guide for Cocoa". The answer is explicit: the 0,0 coordinate of the Cocoa drawing system is the bottom left.

More important to me: where is the best place for me to detect this change because I want to change the parent view's height to accommodate any increase in height in the text view.

One possible approach is to observe NSViewFrameDidChangeNotification coming from the view. See the NSView documentation for how to use it.

Best,

Keary Suska
Esoteritech, Inc.
"Demystifying technology for your home or business"

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