How can i prevent a GUI from closing?

I am currently creating a Graphical User Interface with several pushbuttons. When selecting one of the buttons, the GUI closes and runs an m file (opens an image, permits the user to select points on it and saves the data into a separate file). How can I prevent the GUI from closing as I want to use another button to perform further operations with that saved data?

Answer 1

[Sean de Wolski]

Set the figure's CloseRequestFcn to [];

h = figure;
surf(peaks);
set(h,'CloseRequestFcn',[]);

Note, this isn't fool proof, the CloseRequestFcn could be set back to the default or a:

close all force

would clean it out as well.