iwidgets::extbutton - Extends the behavior of the Tk button by allowing a bitmap or image to coexist with text.


iwidgets::extbutton pathName ?options?


itk::Widget <- iwidgets::Extbutton


activebackground activeforeground bitmap background bd cursor disabledforeground font foreground image justify relief text

See the options manual entry for details on the standard options.


Name: bitmapforeground Class: Foreground Command-Line Switch: -bitmapforeground

Configures the foreground color of the bitmap.

Name: command Class: Command Command-Line Switch: -command

Associate a command with the extbutton. Simulates a Tk button's -command option. Invoked by either <1> events or by explicitly calling the public invoke() method.

Name: defaultring Class: DefaultRing Command-Line Switch: -defaultring

Boolean describing whether the extbutton displays its default ring given in any of the forms acceptable to Tcl_GetBoolean. The default is false.

Name: defaultringpad Class: Pad Command-Line Switch: -defaultringpad

Specifies the amount of space to be allocated to the indentation of the default ring ring given in any of the forms acceptable to Tcl_GetPixels. The option has no effect if the defaultring option is set to false. The default is 4 pixels.

Name: imagePos Class: Position Command-Line Switch: -imagepos

Specifies the image position relative to the message text: n, ne, nw, s, se, sw, w, wn, ws, e, en, or es. The default is w.

Name: ringBackground Class: Background Command-Line Switch: -ringbackground

Configures the background color of the default ring frame (if -defaultring is set to boolean true).


The extbutton extends the behavior of the atomic Tk button by allowing text and an image or bitmap to coexist. The user may use the -image or -bitmap options to specify an image as well as the -imagepos option to specify image position relative to the text. Note that the extbutton is not intended to be used without an image/bitmap. There will be an emtpy space next to the text if no image/bitmap is specified.


The iwidgets::extbutton command creates a new Tcl command whose name is pathName. This command may be used to invoke various operations on the widget. It has the following general form:

pathName option ?arg arg ...?


Each of the following methods are inherited from itk::Archetype. See that man page for details.
pathName cget
pathName component
pathName config
pathName configure


pathName invoke
Evaluates the command fragment associated with the -command option.
pathName flash
Simulates the Tk button's flash command.


package require Iwidgets 4.0
iwidgets::extbutton .eb -text "Bitmap example" -bitmap info \
  -background bisque -activeforeground red -bitmapforeground blue \
  -defaultring 1 -command {puts "Bisque is beautiful"}
pack .eb -expand 1

iwidgets::extbutton .eb -text "Image example" -relief ridge -image \
  [image create photo -file $itk::library/../iwidgets/demos/images/clear.gif] \
  -font 9x15bold -background lightgreen -imagepos e \
  -activebackground lightyellow
pack .eb -expand 1


Chad Smith


button, pushbutton