This function is used to import gui back into guibuilder for modification.
ui_str2 = guigetfile(fn)
Filename to be imported.
Imported string to put into guibuilder for modification.
This function is called from the guibuilder to import the sce file which is previously designed by guibuilder. User shall not call it seperately.
// No example available as it should be called from guibuilder main file.