Bitmap Items
- Preface
- Introduction
- Tutorial
- Implementation
- Commands
- bitmap
- eval-wish
- get-tk-var
- photo
- set-tk-var!
- tk
- tk-id->widget
- tk-var
- tk/after
- tk/appname
- tk/bind
- tk/bindtags
- tk/caret
- tk/choosecolor
- tk/choosedirectory
- tk/clipboard
- tk/console
- tk/destroy
- tk/dialog
- tk/event
- tk/focus
- tk/getopenfile
- tk/getsavefile
- tk/grab
- tk/grid
- tk/image
- tk/lower
- tk/messagebox
- tk/option
- tk/pack
- tk/place
- tk/popup
- tk/raise
- tk/scaling
- tk/update
- tk/useinputmethods
- tk/wait
- tk/windowingsystem
- tk/winfo
- tk/wm
- Options
- Extensions
- Changes
Items of type bitmap appear on the display as images with two colors, foreground and background. Bitmaps are created with widget commands of the following form:
(#<widget> 'create 'bitmap x y ?option value option value ...?) (#<widget> 'create 'bitmap coordList ?option value option value ...?)
The arguments x and y or coordList specify the coordinates of a point used to position the bitmap on the display (see the #:anchor option below for more information on how bitmaps are displayed). After the coordinates there may be any number of option-value pairs, each of which sets one of the configuration options for the item. These same option-value pairs may be used in itemconfigure widget commands to change the item's configuration.
The following standard options are supported by bitmaps:
#:state #:tags
The following extra options are supported for bitmaps:
- #:anchor anchorPos
- AnchorPos tells how to position the bitmap relative to the positioning point for the item; it may have any of the forms accepted by Tk_GetAnchor. For example, if anchorPos is center then the bitmap is centered on the point; if anchorPos is n then the bitmap will be drawn so that its top center point is at the positioning point. This option defaults to center.
- #:background color, #:activebackground bitmap, #:disabledbackground bitmap
- Specifies the color to use for each of the bitmap's '0' valued pixels in its normal, active and disabled states. Color may have any of the forms accepted by Tk_GetColor. If this option isn't specified, or if it is specified as an empty string, then nothing is displayed where the bitmap pixels are 0; this produces a transparent effect.
- #:bitmap bitmap, #:activebitmap bitmap, #:disabledbitmap bitmap
- Specifies the bitmaps to display in the item in its normal, active and disabled states. Bitmap may have any of the forms accepted by Tk_GetBitmap.
- #:foreground color, #:activeforeground bitmap, #:disabledforeground bitmap
- Specifies the color to use for each of the bitmap's '1' valued pixels in its normal, active and disabled states. Color may have any of the forms accepted by Tk_GetColor and defaults to black.