Interactive Control and Callbacks

Write programs that respond to user actions, such as mouse clicks

Write callback functions, and add context menus and other interactive elements to your charts.

Functions

`uicontextmenu`	Create context menu component
`uimenu`	Create menu or menu items
`dragrect`	Drag rectangles with mouse
`rbbox`	Create rubberband box for area selection
`refresh`	Redraw current figure
`shg`	Show current figure

Create Callbacks for Graphics Objects
Program a response to user interaction, such as clicking on a graphics object or closing a figure window.
Capturing Mouse Clicks
There are two properties that determine if and how objects respond to mouse clicks, PickableParts and HitTest.
Button Down Callback Function
Button down callbacks execute when users left-click on the graphics object for which the callback is assigned.
Define a Context Menu
This example shows how to define a context menu, which enables you to provide choices to users for interaction with graphics objects.
Define an Object Creation Callback
This example shows how to define an object creation callback.
Define an Object Deletion Callback
This example shows how to define an object deletion callback.
Pass Mouse Click to Group Parent
This example shows how a group of objects can pass a mouse click to a parent, which operates on all objects in the group.
Pass Mouse Click to Obscured Object
This example shows how to pass mouse clicks to an obscured object.

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