Listbox Options
As with any of the widgets, you can configure the Listbox using options. The standard widget options are -cursor, -font, -height, -highlightbackground,-highlightcolor, -highlightthickness, -takefocus, -width, -xscrollcommand, and -yscrollcommand. The options specific to Listbox widgets will be further discussed later in this chapter.
-background =>color- Sets the color of the area behind the text.
-borderwidth =>amount- Sets the width of the edges of the widget. Default is 2.
-cursor =>cursorname- Sets the cursor to display when the mouse is over the Listbox.
-exportselection => 0 |1- Determines if the current Listbox selection is made available for the X selection as well. If set to 1, prevents two Listboxes from having selections at the same time.
-font =>fontname- Sets the font of any text displayed within the Listbox.
-foreground =>color- Sets the color of nonselected text displayed in the Listbox.
-height =>amount- Sets the height of the Listbox.
-highlightbackground =>color- Sets the color the highlight rectangle should be when the Listbox does not have the keyboard focus.
-highlightcolor =>color- Sets the color the highlight rectangle should be when the Listbox does have the keyboard focus.
-highlightthickness =>amount- Sets the thickness of the highlight rectangle. Default is 2.
-relief => 'flat'|'groove'|'raised'|'ridge'|'sunken'|'solid'- Sets the relief of the edges of the Listbox.
-selectbackground =>color- Sets the color behind any selected text.
-selectborderwidth =>amount- Sets the width of the border around any selected text.
-selectforeground =>color- Sets the color of the text in any selected items.
-selectmode => "single" | "browse" | "multiple" | "extended"- Affects how many items can be selected at once; also affects some key/mouse bindings for the Listbox (such as Shift-select).
-setgrid =>0| 1- Turns gridding off or on for the Listbox. Default is 0.
-takefocus => 0 | 1 | undef- Determines whether the widget can have keyboard focus. 0 means never, 1 means always,
undefmeans dynamic decision. -width =>amount- Sets the width of the Listbox in characters. If amount is 0 or less, the Listbox is made as wide as the longest item.
-xscrollcommand =>callback- Assigns a horizontal Scrollbar to widget. See "The Scrollbar Widget".
-yscrollcommand =>callback- Assigns a vertical Scrollbar to widget. See "The Scrollbar Widget".