** Summary **
** Documentation **
[http://www.tcl.tk/man/tcl/TkCmd/bitmap.htm%|%man page]:
[http://www.tcl.tk/man/tcl8.5/TkLib/GetBitmap.htm%|%Tk_GetBitmap man page]:
** See Also **
[How to edit an executable's desktop icon]:
[Bitmap Editor]: a simple tool to create and edit bitmaps
poBitmap: [poSoft utilities], by [Paul Obermeier], is an editor for X bitmaps
[http://www.sfu.ca/~gay/bme.zip%|%Bitmap editor, by Ian Gay]:
[Tk syntax help]:
[Arts and crafts of Tcl-Tk programming]:
[bitmap.to.photo]:
[bme]:
[bitmap images with 2 colors and transparency]:
** Description **
A bitmap is monochromatic representation.
Use a [photo] [image] when you want color or greyscale images or icons (aka a
[pixmap]).
[Tk] uses bitmaps in two senses: directly (via various widgets' '''-bitmap'''
options) and indirectly through the `bitmap` [image] type. ''They are
different!'' Bitmap images are, first and foremost, images. Naked bitmaps are
distinctly uncommon, as well as being difficult to work with in practice.
''([AMG]: Naked [photo]s, on the other hand... hehehe.)''
If you want to edit the bitmap image, it's easier to use a [photo] with just
two colors.
----
A variant [Tk]-pertinent sense of "bitmap" is as a permissible argument to
specific [canvas] subcommands. A model of such uses is
======
.canvas itemconfig rectangle -stipple $bitmap
======
Along with much else
[http://www.tcl.tk/man/tcl8.5/TkLib/GetBitmap.htm%|%Tk_GetBitmap] provides a
list--"error", "gray50", "question", and so on--of standard bitmaps built in to
Tk. Apparently Tk provides no script-level [introspection] to access this
list. To view these built-ins, therefore, it's necessary to perform something
like the script below. Note, however, that the last 16 bitmaps (from document
to caution) are only available on the Mac platform.
======
set bitmap_list {error gray75 gray50 gray25 gray12 hourglass
info questhead question warning document stationery edition
application accessory folder pfolder trash floppy ramdisk
cdrom preferences querydoc stop note caution}
eval destroy [winfo children .]
canvas .c -height 200 -width 200 -background linen
listbox .l -height [llength $bitmap_list]
foreach bitmap $bitmap_list {
.l insert end $bitmap
}
pack .c .l -fill x
bind .l <ButtonRelease-1> show_bitmap
proc show_bitmap {} {
set pattern [.l get [.l curselection]]
.c delete bitmap
.c create bitmap 100 100 -bitmap $pattern -tags bitmap
}
======
Run this and you'll see such an interface such as ...
[http://www.ece.ualberta.ca/~wyard/wiki.tcl.tk/bitmap.jpg]
[LES] With sadness in my heart, I discovered that all items below "warning" are available only on the Macintosh platform. It says so in the manual.
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