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image(3Tk)							    image(3Tk)

NAME    [Toc]    [Back]

     image - Create and	manipulate images

SYNOPSIS    [Toc]    [Back]

     image option ?arg arg ...?

DESCRIPTION    [Toc]    [Back]

     The image command is used to create, delete, and query images.  It	can
     take several different forms, depending on	the option argument.  The
     legal forms are:

     image create type ?name? ?option value ...?
	  Creates a new	image and returns its name.  type specifies the	type
	  of the image,	which must be one of the types currently defined
	  (e.g., bitmap).  name	specifies the name for the image;  if it is
	  omitted then Tk picks	a name of the form imagex, where x is an
	  integer.  There may be any number of option-value pairs, which
	  provide configuration	options	for the	new image.  The	legal set of
	  options is defined separately	for each image type;  see below	for
	  details on the options for built-in image types.  If an image
	  already exists by the	given name then	it is replaced with the	new
	  image	and any	instances of that image	will redisplay with the	new

     image delete name
	  Deletes the image named name and returns an empty string.  If	there
	  are instances	of the image displayed in widgets, the image won't
	  actually be deleted until all	of the instances are released.
	  However, the association between the instances and the image manager
	  will be dropped.  Existing instances will retain their sizes but
	  redisplay as empty areas.  If	a deleted image	is recreated with
	  another call to image	create,	the existing instances will use	the
	  new image.

     image height name
	  Returns a decimal string giving the height of	image name in pixels.

     image names
	  Returns a list containing the	names of all existing images.

     image type	name
	  Returns the type of image name (the value of the type	argument to
	  image	create when the	image was created).

     image types
	  Returns a list whose elements	are all	of the valid image types
	  (i.e., all of	the values that	may be supplied	for the	type argument
	  to image create).

									Page 1

image(3Tk)							    image(3Tk)

     image width name
	  Returns a decimal string giving the width of image name in pixels.

BUILT-IN IMAGE TYPES    [Toc]    [Back]

     The following image types are defined by Tk so they will be available in
     any Tk application.  Individual applications or extensions	may define
     additional	types.

	  Each pixel in	the image displays a foreground	color, a background
	  color, or nothing.  See the bitmap manual entry for more

	  Displays a variety of	full-color images, using dithering to
	  approximate colors on	displays with limited color capabilities.  See
	  the photo manual entry for more information.

KEYWORDS    [Toc]    [Back]

     height, image, types of images, width

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