How to enable checkboxes in Virtual TreeView columns headers?

StackOverflow https://stackoverflow.com/questions/12728022

  •  05-07-2021
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Question

I'm using Virtual TreeView V5.0.1 (06 Sep 2012) in Delphi XE2. Setting CheckBox := True on a header column property does not enables the checkbox, so here's the question, how do I enable checkboxes on column headers?

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Solution

The answer to this seemingly simple question brought a dozen of Google results that tried to hack the header drawing through OwnerDraw and painting checkboxes manually.

Where's the solution I want to share is quite simple, enable following two items in IDE: include hoShowImages into VirtualTree.Header.Options set and toCheckSupport into VirtualTree.TreeOptions.MiscOptions set.

Then you can enable Header.Column[0].CheckBox property and see desired result.

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