image(3tk)						       Tk Built-In Commands							image(3tk)

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NAME

       image - Create and manipulate images

SYNOPSIS

       image option ?arg arg ...?
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DESCRIPTION

       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 a command with the same name 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 contents.	It is important to note that the image command will silently overwrite any procedure that may cur-
	      rently be defined by the given name, so choose the name wisely.  It is recommended to use  a  separate  namespace  for  image  names
	      (e.g., ::img::logo, ::img::large).

       image delete ?name name ...?
	      Deletes each of the named images and returns an empty string.  If there are instances of the images displayed in widgets, the images
	      will not 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 inuse name
	      Returns a boolean value indicating whether or not the image given by name is in use by any widgets.

       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).

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

       Additional operations (e.g. writing the image to a file) may be available as subcommands of the image instance command. See the manual page
       for the particular image type for details.

BUILT-IN IMAGE TYPES
       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.

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

       photo  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.

SEE ALSO

       bitmap(3tk), options(3tk), photo(3tk)

KEYWORDS

       height, image, types of images, width

Tk									4.0								image(3tk)