Automatic Callback creation for UI Button

Hello there.I have a loop that automatically creates UI buttons based on a file that is read and the amount of instances in the file. I would like to now access those callbacks (or essentially make them) while in the loop. How can I go about this?

I am using MATLAB 202a.

Answer 1

[Ameer Hamza]

You can use the ButtonPushedFcn property of the uibutton to assign it a callback. For example

btn = uibuttin();
btn.ButtonPushedFcn = @function_handle_name

[Therry Beauge]

Hello Ameer,

Thank you for the help. I have been working on this for quite some time and used that method. It ddin't work. Using your example, I did:

btn = uibutton();
btn.ButtonPushedFcn = @function_handle_name

For a function that is defined as:

function function_handle_name (app, event)
     fig = figure(); %Testing that we are getting to this point by popping up a figure window.
end  

And I was getting the error below:

Undefined function 'function_handle_name' for input arguments of
type 'matlab.ui.control.Button'.
 
Error using matlab.ui.control.internal.controller.ComponentController/executeUserCallback (line 382)
Error while evaluating Button PrivateButtonPushedFcn.

Is there something wrong in the way that I write my callback function? Can you provide further insight, please?

[Ameer Hamza]

Where is the function function_handle_name defined? Inside the app designer or in a separate file?

[Ameer Hamza]

If you created a function inside the app-designer, then make the following modifications

btn.ButtonPushedFcn = @app.function_handle_name

and

function function_handle_name(app, btn, event)
     fig = figure(); %Testing that we are getting to this point by popping up a figure window.
end  

[Ameer Hamza]

Can you create a small app which just creates a button and assign a callback function to it, similar to your current app? It will make it easy to see the issue happening in your code.

[Therry Beauge]

You are correct. It worked! Thank you.