How to automatically update the value in a string in an edit box with a value in another edit box but still allow the user to overwrite this value?

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Maria 2023-3-9

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https://ww2.mathworks.cn/matlabcentral/answers/1925560-how-to-automatically-update-the-value-in-a-string-in-an-edit-box-with-a-value-in-another-edit-box-bu

回答： Jan 2023-3-9

I have a gui guide where I ask the user if it knows a value (number) in an edit box.

If the user knows this value I want the value in another edit box to automatically update. However, I want the user to be able to update/overwrite the value in the second edit box.

Any help is welcome. Thanks in advance.

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Maria 2023-3-9

Thanks for the comment. However, we have an already working guide...

Rik 2023-3-9

Then it should be easy to generate the code and clean up the mess that GUIDE made, after which you no longer rely on a fragile system with two separate files, one of which easily breaks when edited in a wrong version of Matlab.

But the second part of my comment should still be worth a try regardless.

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Answer 1

Jan 2023-3-9

在 MATLAB Online 中打开

Without GUIDE but a working demonstration:

handles.FigH  = figure;
handles.Edit1 = uicontrol('Style', 'Edit', ...
   'Units', 'Normalized', ...
   'Position', [0.1, 0.55, 0.8, 0.4], ...
   'Callback', @Edit1CB);
handles.Edit2 = uicontrol('Style', 'Edit', ...
   'Units', 'Normalized', ...
   'Position', [0.1, 0.05, 0.8, 0.4]);
guidata(handles.FigH, handles);
function Edit1CB(Edit1, EventData)
handles = guidata(Edit1);
set(handles.Edit2, 'String', get(Edit1, 'String'));
end