IMAGE(9) IMAGE(9)
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 bitmap ?name? ?option value ...?
Creates a new image and returns its name. 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. A bitmap image is defined by two bitmaps,
called the source and the mask. The source is
displayed whereever the mask has a non-zero pixel,
otherwise nothing will be displayed, producing a
transparent effect. The two bitmaps must have the same
dimensions. The following options are supported:
-file name
name gives the name of a file whose contents
define the source bitmap. The file must be in
image(6) format.
-maskfile name
name gives the name of a file whose contents
define the mask. The file must be in image(6) for-
mat.
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 name ...?
Deletes each of the named images and returns an empty
string. If there are instances of the images displayed
in widgets, the images won't actually be deleted until
all of the instances are released. However, the asso-
ciation 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.
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IMAGE(9) IMAGE(9)
image names
Returns a list containing the names of all existing
images.
image type name
Returns ``bitmap'' if name is an existing image, or an
error otherwise.
image width name
Returns a decimal string giving the width of image name
in pixels.
BUGS
Currently, changing the bitmap associated with an image does
not change the appearance of any current instances of that
image; there is no ``image manager'' as such.
SEE ALSO
options(9), types(9), imageput in tk(2),
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