image - Create and manipulate images
?arg arg ...
command is used to create, delete, and query images. It can
take several different forms, depending on the option
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
image x, 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 currently 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,
- 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
- 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 width name
- Returns a decimal string giving the width of image name in
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.
The following image types are defined by Tk so they will be available in any Tk
application. Individual applications or extensions may define additional
- Each pixel in the image displays a foreground color, a background color,
or nothing. See the bitmap manual entry for more information.
- 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.
bitmap(n), options(n), photo(n)
height, image, types of images, width