How can I clean up lines, drawn by a FMX TScrollBox Bug, outside of TScrollBox?

Question

In my main application I'm experiencing a bug with FMX TScrollBox. While scrolling down in the scrollbox, the TNumberbox leaves behind lines in other components. Even after repainting/updating the other components (with the lines) the lines aren't cleaned up.

To clarify I made a dummy application:

image

Component breakdown

I understand that there's probably no way to get rid of the bug. However I would like to know how I can clean up the lines in my application. Anyone that can help?

no sure if it's will help, but could you try the TALScrollBox (better talVertScrollBox) that you can found at github.com/Zeus64/alcinoe ? it's have the same properties of TscrollBox (so the change must be easy) but it's implementation is a little different — zeus

M. Boot M. Boot · Accepted Answer · 2018-08-21T05:56:13

The bug appears when using TGridpanelLayout in a TScrollBox (any kind). To avoid this you avoid using TGridpanelLayout directly in a TScrollbox.

You can do this by using standard TLayouts in the TScrollbox, or using a frame with TGridpanelLayout in it.

How can I clean up lines, drawn by a FMX TScrollBox Bug, outside of TScrollBox?

1 Answers