How to use a button to delete the last value from a TextArea? [MATLAB app designer]

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Geith 2021-3-6

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评论： segu sahishna 2022-8-4

I am creating a simple calculator app in the app designer. When a user presses a button, the app takes the previous value from the display (app.Display.Value) and concatenates the users input button to it, to update the value of the display.

I am trying to implement a delete button which deletes only the last value from the display which is a 'Text Area' component. This is what I have currently but it is not working:

Thanks.

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Answer 1

Aghamarsh Varanasi 2021-3-9

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Hi,

The TextArea component in the appDesigner stores values in the form of a cell array. This helps to display more than one line as output in the TextArea. Hence for your use-case, you could edit the value of the TextArea as follows

app.Display.Value = app.Display.Value{1}(1:end-1);

Hope this helps