


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 avail-
              able 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.






STk                            3.2                              1





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


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                              2


