MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador descarregar pdf (Página 149)

Creating Menus

6-59

• Display a check next to the menu item when the menu is first opened by

checking

Check mark this item. A check indicates the current state of the

menu item. See the example in “Adding Items to the Context Menu” on

page 6-57. See “Updating a Menu Item Check” on page 8-38 for an example.

• Enable this item when the menu is first opened by checking

Enable this

item

. This allows the user to select this item when the menu is first opened.

If you deselect this option, the menu item appears dimmed when the menu

is first opened, and the user cannot select it.

• Specify a string for the routine, i.e., the

Callback, that performs the action

associated with the menu item. If you have not yet saved the GUI, the default

value is

'%automatic'. When you save the GUI, and if you have not changed

this field, GUIDE automatically sets the value using a combination of the

Tag field and the GUI filename. See “Menu Item” on page 8-37 for more

information about specifying this field and for programming menu items.

The

View button displays the callback, if there is one, in an editor. If you

have not yet saved the GUI, GUIDE prompts you to save it.

• Open the Property inspector, where you can change all menu properties, by

clicking the

More options button.

Associating the Context Menu with an Object

In the Layout Editor, select the object for which you are defining the context

menu. Use the Property Inspector to set this object’s

UIContextMenu property

to the name of the desired context menu. The following figure shows the

UIContextMenu property for the axes object with Tag property axes1.

1 2 ... 144 145 146 147 148 149 150 151 152 153 154 ... 329 330

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MATLAB SIMULINK 7 - GRAPHICAL USER INTERFACE Manual do Utilizador Página 149