Update string with new line in edit Field (text) in mlapp

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ML_Analyst 2023-12-5

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评论： Voss 2023-12-7

I have a GUI with a edit text box which I will update via my script, but I want to add newlines and the edit text box should update with new lines as I have updated via the script. My code snippet is below

Text_to_update= “This is sample testing” + newline + newline + “Results are stored in the output path”;
app.NewEditField.Value= Text_to_update;

But I cannot see the text displayed in 2 lines (with one line space in between) in the Edit Tex field ,it is just displayed in straight line. Could someone help here ?

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ML_Analyst 2023-12-7

Tried this.. but doesn’t work too ,also I have some variables in between too

Voss 2023-12-7

From uieditfield documentation (under Value property):

"If you want to allow multiple lines of text, use a text area component instead of an edit field."

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Answer 1

Image Analyst 2023-12-5

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在 MATLAB Online 中打开

Yeah, kind of weird. But I found that if you make it a Text instead of an Edit box, it will work and show up on multiple lines:

folder = pwd;
selectedFileName = 'whatever.png';
app.TextArea.Value = sprintf('%s\n\n%s', folder, selectedFileName);

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ML_Analyst 2023-12-7

Thanks , but for my use case thinking it’s better to use edit text field

Image Analyst 2023-12-7

在 MATLAB Online 中打开

Why? I think not having line feeds in the edit text box may be a bug. You can assign them but it just doesn't show up on separate lines. If you get the values:

% Button pushed function: Button2
function Button2Pushed(app, event)
sText = app.TextArea.Value % Returns cell array.
sEdit = app.EditField.Value % Returns character array.
end

You'll see the difference is the text box value comes back as a cell array with each line of the text box as one cell, and the edit text comes back as a character array.

You can still allow the user to edit the text box and change it, you just have to deal with their input as a cell array, which is no big deal. So for all intents and purposes it seems they are pretty similar and using a text box to capture user input should work just fine. Why do you think it won't???

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