MATLAB Runtime Server

Using the CloseRequestFcn to Exit the Application

As a minimal measure, you should configure the CloseRequestFcn property of the main GUI figure window to exit the application. This allows the user to exit the application by clicking the GUI window's Close box.

Note    The default CloseRequestFcn for a MATLAB GUI is the function closereq.m, which simply deletes the figure window. Since deleting the main GUI window leaves the user with no means to exit the Runtime Server, you should substitute an alternate CloseRequestFcn for the main GUI figure window. If you do not want the GUI's Close box to exit the application (as shown below), you can specify some other action for the CloseRequestFcn (use an empty CloseRequestFcn string to disable the Close box entirely).

For example, the following command creates a GUI window whose Close box executes a function called shutdown when clicked.

• fig = figure('HandleVisibility','Callback','Menubar','none',...
  'CloseRequestFcn','shutdown');
  

This shut-down function, which you write, can perform final operations (such as saving the user's work and settings) and then explicitly execute the quit command. Note that the shut-down function should close the GUI figure window before executing the quit command. This prevents possible recursion between the quit function and CloseRequestFcn.

Providing a Way to Exit the Application

Using a Uicontrol or Uimenu to Exit the Application