Loading data from gui to a function

I made a GUI for my project. When I press start push button a timer start working. It execute a function named "update.m" each second. I need to change GUI elements properties (like edittext, text, pop up menu ,...) in update.m function routine but I don't have access to handles variable.

What should I do? can I use assignin function? What is function caller?

Answer 1

[Fangjun Jiang]

In the callback function of your push button, you have access to the handles. Pass this handles to update.m

Answer 2

[Walter Roberson]

I wouldn't pass the handles structure if you are using it to carry data that is not just object handles (and the object handles are not going to change.)

The more general method is to instead pass the GUI figure handle to the update call, such as

timer('Callback', {@update, GuiFigureNumber}, ....)

Then,

function update(FigureNumber)
  handles = guidata(FigureNumber);
  ...
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