MATLAB Creating Graphical User Interfaces

14 Examples of UIs Created Programmatically

end

• The localUpdatePlot function creates a plot in the axes. The localUpdatePlot
  function gets the pop-up menu’s Value property to determine which plot the user
  selected.


• The default output argument is the handle of the main figure.

Define the Callbacks

This topic defines the callbacks that make the UI respond to user interactions. Because

the callback functions are nested inside the main function, they have access to all data

and components defined in the main function.

Although the UI has six components that are serviced by callbacks, there are only four

callback functions. This is because the Open menu item and the Open toolbar button

share the same callbacks. Similarly, the Print menu item and the Print toolbar button

share the same callbacks.

Update Button Callback

The hUpdateButtonCallback function services the Update push button. Clicking the

Update button triggers the execution of this callback function.

function hUpdateButtonCallback(hObject, eventdata)

% Callback function run when the Update button is pressed

localUpdatePlot();

end

Open Menu Item Callback

The hOpenMenuitemCallback function services the Open menu item and the Open

toolbar button. Selecting the menu item or clicking the toolbar button triggers the

execution of this callback function.

function hOpenMenuitemCallback(hObject,eventdata)

% Callback function run when the Open menu item is selected

file = uigetfile('*.m');

if ~isequal(file, 0)

open(file);

end