MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Guide de l'utilisateur télécharger pdf (Page 734)

100

101

15 Examples of GUIs Created Programmatically

Code File Organi

zation

The iconEditor i

s programmed using nested functions. Its code is organized in

the following se

quence:

1 Comments displ

ayed in response to the

help command.

2 Data creation. Because the example uses n ested functions, defining this

data at the top level makes the data accessible to all functions without

having to pass them as arguments.

3 GUI figure and component creation.

4 Command lin

e input processing.

5 GUI initialization.

6 Block execution of the program until the GUI user clicks OK or Cancel.

7 Return ou

tput if requested.

8 Callback definitions. These callbacks, which service the GUI components,

are subfunctions of the

iconEditor function and so have access to the

data and component handles created at the top level, without their having

to be passed as arguments.

9 Helper function definitions. These helper functions are subfunctions o f the

iconEditor function and so have access to the data and component handles

created at the top level, without their having to be passed a s arguments.

Note For information about using nested functions, see “Nested Functions”.

GUI Programming Techniques

This topic explains the following GUI programming techniques as they are

used in the creation of the iconEditor.

• “Return Only After the User M akes a Choice” on page 15-71

• “Pass Input Arguments to a GUI” on page 15-72

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