underline
- Preface
- Introduction
- Tutorial
- Implementation
- Commands
- Options
- activebackground
- activeborderwidth
- activeforeground
- anchor
- background
- bg
- bitmap
- borderwidth
- bd
- cursor
- disabledforeground
- exportselection
- font
- foreground
- fg
- highlightbackground
- highlightcolor
- highlightthickness
- image
- insertbackground
- insertborderwidth
- insertofftime
- insertontime
- insertwidth
- jump
- justify
- orient
- padx
- pady
- relief
- repeatdelay
- repeatinterval
- selectbackground
- selectborderwidth
- selectforeground
- setgrid
- takefocus
- text
- textvariable
- troughcolor
- underline
- wraplength
- xscrollcommand
- yscrollcommand
- Extensions
- Changes
Specifies the integer index of a character to underline in the widget. This option is used by the default bindings to implement keyboard traversal for menu buttons and menu entries. 0 corresponds to the first character of the text displayed in the widget, 1 to the next character, and so on.