NSTextView retain text

Question

Created Sep ’21

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When I set Window backgroundColor = .clear, disable NSTextView draw background, then I change NSTextView.string as you can see in the picture, preview text retain in the background.

POC code is here SingleView

How can I clear the background text (Foo1245 in the image background) when change NSTextView.string ?

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Answer 1

Claude31 OP

Sep ’21

I see that you set ScrollView>ClipView to not draw background.

If you change this, the phantom FOO12345 disappear when drawing new background.

I was intrigued by a point:

how do you set the full view to be transparent ?

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Answer 2

Claude31 OP

Sep ’21

I would try the following:

in action, set string in content by using textStorage instead of direct assignment
You need to use layoutManager to do so.
See details here : https://stackoverflow.com/questions/29035431/how-to-set-up-an-nstextview-programmatically-with-explicit-nslayoutmanager-nste

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