get value from uicontrol editbox

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NURUL FARINA BINTI MAZLAN 2019-3-14

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https://ww2.mathworks.cn/matlabcentral/answers/450085-get-value-from-uicontrol-editbox

评论： NURUL FARINA BINTI MAZLAN 2019-3-14

Hi,

I have setup a uicontrol edit box into my code and expected to receive certain value from user. However, what kind of syntax can I use to get the value from the edit box to be used in other function?

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Answer 1

Kevin Phung 2019-3-14

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https://ww2.mathworks.cn/matlabcentral/answers/450085-get-value-from-uicontrol-editbox#answer_365385

编辑：Kevin Phung 2019-3-14

在 MATLAB Online 中打开

You either set a callback function for that edit box, that will be triggered whenever the user hits the enter key,

edit = uicontrol('style','edit','Callback',@user_edit)
function user_edit(hObj,event) %these parameters are by default. 
% hObj is the handle to your button.
disp(hObj.String) %this will display the current string
end

or, if you want to retrieve the string from beyond the callback function, assign a tag to your edit box so that you can point back to it:

set(edit,'Tag','edit1')
%or
edit.Tag = 'edit1';
function someotherfunction()
my_edit = findobj(gcf,'Tag',edit1);
disp(my_edit.String)
end

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Kevin Phung 2019-3-14

在 MATLAB Online 中打开

'Is it possible for me to get the value of the input from the edit box and use it in other function using the code above?'

yes, i mentioned that in my answer.

You can also store data in the 'UserData' property of your graphic objects.

so:

function [ newValue, validNumber, inBounds ]  = newValueFromString( ...
           N, textString)
 textString = get(edit_speed,'String');
 [ inputNumber, validNumber ]  = str2num( textString );
 
 edit_speed.UserData = textString
end