STRUCTDLG

This function takes a structure as input and then automatically builds a graphical user interface.

S_NEW = STRUCTDLG(S_OLD) creates a modal dialog box that asks the user for the new values of each field in the structure S_OLD, then it creates a new structure S_NEW with the same fields but new values.
In other words, this function takes a structure as input, then it automatically builds a graphical user interface to modify its field values. It is based on INPUTDLG.