DoubleActionButton

inherits from SimpleActionButton;

Class Description

Double action buttons are more complex versions of simple action buttons. Use double action buttons whenever you want a button that does something different when the option key is pressed.

Programming information

Instantiate: sometimes
Subclass: rarely
Call its methods: rarely

You'll rarely need to subclass class DoubleActionButton. Instead, you'll just put double action button objects into place in your object definition files. Just fill in the optionTarget and optionOperation fields with the button's second target and second operation number.

Methods defined by class DoubleActionButton

Class DoubleActionButton defines the following methods:

Method	Description
Action	Overridden to use the button's option target and option operation when
	the option key is down; otherwise calls inherited
Touch	Overridden to play the button's sound and call Action if the option key is
	down and the operation option bit is set

Fields defined by class DoubleActionButton

Class DoubleActionButton defines the following fields:

Field	Type	Description
Inherited from SingleLinkable
next	Object	Next item in view list
Inherited from Linkable
previous	Object	Previous item in view list
Inherited from Viewable
superview	Viewable	Container for this object
subview	Viewable	Object contained by this object
relativeOrigin	Dot	Origin relative to superview
contentSize	Dot	Size of content rectangle
viewFlags	Unsigned	Property settings
labelStyle	TextStyle	Text style of object's label
color	Unsigned	Color of object's content
altColor	Unsigned	Not used by button
shadow	Shadow	Shadow drawn with object
sound	Sound	Sound associated with object
Inherited from Stamp
image	Image	Image used to draw stamp
Inherited from HasBorder
border	Border	The button's border
Inherited from SimpleActionButton
target	Object	The button's target
operation	Unsigned	Settings for the button, including the operation
		targeted
Defined by DoubleActionButton
optionTarget	Object	The button's target when the option key is pressed
optionOperation	Unsigned	Settings for the button when the option key is
		pressed

The optionOperation field can have a special bit set. The associated mask is defined as:

#define kOperationOptionMask    0x40000000

If this bit is set, Touch will play the button's sound and call Action.

Attributes defined by class DoubleActionButton

Class DoubleActionButton defines the following attributes:

Attribute	Type	Description
OptionTarget	Object	The button's target when the option key is down;
		interface to the optionTarget field