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Sometimes we use a TPanel for layout purposes, and in those cases the Panel should sometimes be transparent.
After having gone through numerous options, I found this to work under macOS/Cocoa (using FPC Trunk);
Originally this only worked under Windows, but it seems to work with Cocoa (with Lazarus 4.99 or newer - I am using trunk)
YourPanel.ControlStyle := YourPanel.ControlStyle - [csOpaque] + [csParentBackground];
As it took me quite a while to figure this one out: I hope this is helpful to someone 😊
