App Designer: interrupt while loop in running callback by a SPECIFIC interrupting callback (push button)

Dear All,

I have two buttons, each associated with a function callback. When the 1st button is pressed, the code enters a while loop to update a global property. How do I interupt the while loop and exit function 1, when and only when button 2 with its function XButtonPushed(app, event) get activated? In other answers, introducing a small pause or drawnow() should do it (verified that button 1 callback is interruptible, 'on'), but that method is not specific to a certain button (XButtonPushed(app, event)), any button would lead to interruption. How do a specifically instruct 1st callback about a specific button2?

Something like

loopy = true;

while loopy ==true

% do smth

if % button2 pushed,

loopy = false;

continue

end

end

I tried

if XButtonPushed(app, event) ..., but I get an error about too many output arguments for XButtonPushed.

Thank you,

OL

[Mohammad Sami]

See my answer below. you can create a statebutton and use its value in the while loop.

https://www.mathworks.com/matlabcentral/answers/507780-wait-for-a-button-to-be-pressed-to-continue-the-function-app-designer