Listbox Attributes
Table 32-9 lists the listbox widget attributes. The table uses the resource name for the attribute, which has capitals at internal word boundaries. In Tcl commands these options are specified with a dash and all lowercase.
| background | Background color (also bg). |
| borderWidth | Extra space around the edge of the text. |
| cursor | Cursor to display when mouse is over the widget. |
| exportSelection | If true, then the selected text is exported via the X selection mechanism. |
| font | Font for the text. |
| foreground | Foreground color (also fg). |
| height | Number of lines in the listbox. |
| highlightBackground | Focus highlight color when widget does not have focus. |
| highlightColor | Focus highlight color when widget has focus. |
| highlightThickness | Thickness of focus highlight rectangle. |
| relief | flat, sunken, raised, groove, solid, or ridge. |
| selectBackground | Background color of selection. |
| selectForeground | Foreground color of selection. |
| selectBorderWidth | Width of selection border. Nonzero for 3D effect. |
| selectMode | Mode: browse, single, extended, or multiple. |
| setGrid | Boolean. Set gridding attribute. |
| takeFocus | Controls focus changes from keyboard traversal. |
| width | Width, in average character sizes. |
| xScrollCommand | Connects listbox to a horizontal scrollbar. |
| yScrollCommand | Connects listbox to a vertical scrollbar. |
Geometry Gridding
The setGrid attribute affects interactive resizing of the window containing the listbox. By default, a window can be resized to any size. If gridding is turned on, the size is restricted so that a whole number of lines and a whole number of average-width characters is displayed. Gridding affects the user feedback during an interactive resize. Without gridding the size is reported in pixel dimensions. When gridding is turned on, then the size is reported in grided units.
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