This interface is used on Microsoft Windows to get access to a window preview's toolbar button properties. These buttons are displayed below the window preview. 
 
   
   
1.0
 
  28
 
   
 
Introduced
 
Gecko 1.9.2
 
 
Inherits from: 
 
nsISupports 
Last changed in Gecko 1.9.2 (Firefox 3.6 / Thunderbird 3.1 / Fennec 1.0)You can't directly instantiate this interface. Instead, you use the nsITaskbarWindowPreview.getButton() to get the objects representing the buttons.
Attributes
| Attribute | Type | Description | 
| disabled | boolean | If true, the button is disabled. This is not the same asvisible, which indicates whether or not the button should be displayed at all. | 
| dismissOnClick | boolean | If true, the array of previews should be dismissed when the button is clicked. This isfalseby default. | 
| hasBorder | boolean | If true, the taskbar should draw a border around this button's image. This istrueby default. | 
| image |  | The icon displayed in the button. This is nullby default. | 
| tooltip | DOMString | The string displayed in the button's tooltip. By default, this is an empty string. | 
| visible | boolean | If true, the button is displayed. If false, the button doesn't participate in the layout of buttons underneath the preview. This isfalseby default. |