update box with TextAeaValuechanged callback don't run
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hi, when i change text in this area nothing happens
Am I doing something wrong or should I select Add ValueChangingFcn callback?
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Cris LaPierre
2023-6-24
0 个投票
It looks like you have already defined a callback function for when the value of the text area is changed. Have you added any code to it? Without seeng the code in the callback function, as well as knowing what it is you expect to happen, it's really difficult to provide specific feedback.
15 个评论
shamal
2023-6-24
Cris LaPierre
2023-6-25
It's doing exactly what you've programmed it to do. fprintf writes to the command window, not the text area.
Cris LaPierre
2023-6-26
Hm. It works in R2023a. What version of MATLAB are you using?
shamal
2023-6-26
Cris LaPierre
2023-6-26
I made no changes to your app. Here is a gif in R2023a in Windows 11.
shamal
2023-6-26
Cris LaPierre
2023-6-26
Are you using the exact same script you attached to this thread?
Cris LaPierre
2023-6-26
No. The 'valueChanged' callback will not execute until you are done, interpretted as changing focus away from the TextArea.
If you want your callback to execute as you are making changes, you need to use the 'valueChangingFcn' callback instead.
shamal
2023-6-26
in my example the box was non-editable and I changed it via code (by pressing the button) Then moving to another part of the gui he didn't write to me
Cris LaPierre
2023-6-26
When you change the text programmatically, the callback function is not run.
shamal
2023-6-26
Cris LaPierre
2023-6-26
If you want the callback to execute when you are changing the value programmatically, you just need to call that function inside the callback function that is executing.
% Button pushed function: Button
function ButtonPushed(app, event)
[file,path] = uiputfile ({'*.*'}, 'Select a file');
[~,name,~] = fileparts(file);
app.TextArea.Value=name;
TextAreaValueChanged(app, app.TextArea)
end
shamal
2023-6-26
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