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Very nice tutorial! The code even runs under Catalyst on the Mac.

The only glitch I found was a tap gesture in the ShapesGrid does not always select a shape. It takes a bit of poking to get a shape.

I do have a suggestion. There is a lot of important commentary regarding why this or that is done. I think some of that knowledge should be in the code as comments.

That’s great to know! I didn’t test it under Catalyst.

Yes, I think it’s because the shapes aren’t filled? You could try filling them and see if that makes a difference.

That’s a good suggestion. Thank you for your feedback :slight_smile: