jpeg(n)                      Tk Built-In Commands                      jpeg(n)



NAME
       jpeg - Create color images from JPEG files.

SYNOPSIS
       (image 'create 'jpeg ?name? ?options?)


DESCRIPTION
       JPG is a popular image file format for storing images.  The jpeg image
       type can be used to create color images using JPEG files (aka  .jpg.
       files).


CREATING JPEG IMAGES
       Like all images, jpegs are created using the image create command. Jpeg
       images support the following options:

       file name
              name gives the name of a file whose contents define the source
              image.


IMAGE PROCEDURE
       When a jpeg image is created, Tk also creates a new procedure whose
       name is the same as the image.  This procedure may be used to invoke
       various operations on the image.  It has the following general form:
       (imageName option ?arg arg ...?)  Option and the args determine the
       exact behavior of the procedure. The following commands are possible
       for jpeg images:

       (imageName 'cget option)
              Returns the current value of the configuration option given by
              option. Option may have any of the values accepted by the image
              create jpeg command.

       (imageName 'configure ?option? ?value option value ...?)
              Query or modify the configuration options for the image. If no
              option is specified, returns a list describing all of the
              available options for imageName (see Tk_ConfigureInfo for
              information on the format of this list).  If option is specified
              with no value, then the command returns a list describing the
              one named option (this list will be identical to the
              corresponding sublist of the value returned if no option is
              specified).  If one or more option-value pairs are specified,
              then the command modifies the given option(s) to have the given
              value(s); in this case the command returns an empty string.
              Option may have any of the values accepted by the image create
              jpeg command.


INITIALIZATION
       Use (require "jpeg") to initialize the jpeg package.


CREDITS
       This implementation of the jpeg image format was done by Andrew Swan
       <aswan@cs.berkeley.edu>


SEE ALSO
       bitmap, make-image, image, photo, pixmap




STk                                   3.2                              jpeg(n)
