Display information when ticking the checkbox in app designer.
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hi, I'm having a little problem: how to click on the check box, the parameters like Size , Color.. will appear on the screen.
Please help me and thanks a lot
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/1336014/image.jpeg)
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Adam Danz
le 25 Mar 2023
You must assign a ValueChangedFcn to the checkbox to react when users check or uncheck the box.
Within the ValueChangedFcn, you can turn off/on the Visible property of the Size and Color objects based on the Value returned within the callback function.
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Adam Danz
le 26 Mar 2023
Déplacé(e) : Adam Danz
le 27 Mar 2023
- See this answer (Step 3) to learn how to add a ValueChangedFunction. This will add a callback function in your app's code. https://www.mathworks.com/matlabcentral/answers/503673-app-designer-create-a-discrete-slider#answer_414023
- The Callback function will have 2 inputs. You can get the value of the checkbox from the first input using something like value=app.Checkbox.Value
- If the Value is true, then you should turn on the visible properties of the objects you want to control. app.OBJECT.Visible=true, where OBJECT is the handle to whatever object you're targetting. If the Value is false, set visible to false.
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