image(3Tk)

NAME
     image - Create and manipulate images

SYNOPSIS
     image option ?arg arg ...?


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 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.

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


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
          information.

     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.


KEYWORDS
     height, image, types of images, width