I have create a TreeViewer with data, but the TreeColumn is so much , so I want to ask a question how can freeze the first TreeColumn, thanks
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TreeViewer doesn't support that. Maybe look at [NatTable](https://www.eclipse.org/nattable/) – greg-449 Apr 12 '22 at 15:53
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Please provide enough code so others can better understand or reproduce the problem. – Community Apr 12 '22 at 21:59