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I am using ‘appdesigner’, I would like to programmatically scroll to the bottom of a TextArea, is this possible?

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I am using ‘appdesigner’.
I would like to programmatically scroll to the bottom of a TextArea, is this possible?
My text area is being used a "console log".
Thanks, Gregg

Risposte (4)

Michael Corbett
Michael Corbett il 12 Ott 2018
To accomplish a scrolling text area, I did the following:
- Create the Text Area with 3 lines high (or as many as you'd like).
- Create a public consoleObj object using
properties (Access = public)
consoleObj
end
- On startup, write lines one and two (change to whatever appropriate):
app.consoleObj.line1 = 'Console Started';
app.consoleObj.line2 = 'System ready';
app.consoleObj.line3 = '';
app.ConsoleTextArea.Value = {app.consoleObj.line1;app.consoleObj.line2;app.consoleObj.line3};
- Wrote a function that would replace line1 with line2, line2 with line3, then add the new line3 and display:
methods (Access = public)
function writeConsoleLine(app,lineIn)
app.consoleObj.line1 = app.consoleObj.line2;
app.consoleObj.line2 = app.consoleObj.line3;
app.consoleObj.line3 = lineIn;
app.ConsoleTextArea.Value = {app.consoleObj.line1;app.consoleObj.line2;app.consoleObj.line3};
end
- Call the function to display the new text.
writeConsoleLine(app,'Pushbutton pressed');
  3 Commenti
Jan
Jan il 14 Feb 2019
@Marko: Please use flags only to inform admins and editors about content, which might conflict with the terms of use, like spam or rudeness. Thanks.
If this answer solves your problem, "accept" it instead of setting a flag.
Samuel Salinas
Samuel Salinas il 12 Giu 2020
I tried the same approach but the "app.ConsoleTextArea.Value" field demands a string scalar or charcater vector, not a cell.
How do I go around this?

Accedi per commentare.


Joshua Welsh
Joshua Welsh il 16 Apr 2018

Put your text into a ListBox instead of text area and then use the scroll function:

     scroll(app.ListBox, 'bottom')
  3 Commenti

Accedi per commentare.


Han Geerligs
Han Geerligs il 9 Giu 2017
Hi Gregg,
I have the same question. Do you have any solution already?
regards, Han

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

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