How to make a Text Area auto-scroll to bottom (created in app designer)

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Frank van Diggelen
Frank van Diggelen on 3 Aug 2017
Answered: Eric Sargent on 9 Dec 2020
I created a Text Area in app designer. It is populated with status messages as the app runs. After a while the area fills with lines of text, and the vertical scroll bar appears, but new messages are written in the invisible part of the area. The user has to scroll down "by hand". How can I make the Text Area autoscroll, so that each new message is visible?

Answers (2)

Chris Portal
Chris Portal on 5 Aug 2017
If it's possible to use a listbox instead of a text area, you would be able to use the scroll function to programmatically scroll specific items into view:
  1 Comment
Marko Antila
Marko Antila on 14 Feb 2019
Scroll function does not work properly with App Designer List Box, unfortunately:
  • in startFcn it hides the List Box (permanently)
  • in callbacks it does exactly nothing

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Eric Sargent
Eric Sargent on 9 Dec 2020
As of R2020b uitextarea now supports scroll.
In this case you could use:
scroll(textArea, 'bottom')

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