Creating Graphical User Interfaces

Enabling or Disabling Controls

You can control whether a control responds to mouse button clicks by setting the Enable property. Controls have three states:

• on -- The control is operational.
• off -- The control is disabled and its label (set by the string property) is grayed out.
• inactive -- The control is disabled, but its label is not grayed out.

When a control is disabled, clicking on it with the left mouse button does not execute its callback routine. However, the left-click causes two other callback routines to execute:

1. First the figure WindowButtonDownFcn callback executes
2. Then the control's ButtonDownFcn callback executes

A right mouse button click on a disabled control posts a context menu, if one is defined for that control. See the Enable property description for more details.

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