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authorWilliam Joye <wjoye@cfa.harvard.edu>2019-12-19 16:55:08 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2019-12-19 16:55:08 (GMT)
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-'\"
-'\" Copyright (c) 1994 The Regents of the University of California.
-'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.TH image n 4.0 Tk "Tk Built-In Commands"
-.so man.macros
-.BS
-'\" Note: do not modify the .SH NAME line immediately below!
-.SH NAME
-image \- Create and manipulate images
-.SH SYNOPSIS
-\fBimage\fR \fIoption \fR?\fIarg arg ...\fR?
-.BE
-.SH DESCRIPTION
-.PP
-The \fBimage\fR command is used to create, delete, and query images.
-It can take several different forms, depending on the
-\fIoption\fR argument. The legal forms are:
-.TP
-\fBimage create \fItype \fR?\fIname\fR? ?\fIoption value ...\fR?
-Creates a new image and a command with the same name and returns its name.
-\fItype\fR specifies the type of the image, which must be one of
-the types currently defined (e.g., \fBbitmap\fR).
-\fIname\fR specifies the name for the image; if it is omitted then
-Tk picks a name of the form \fBimage\fIx\fR, where \fIx\fR is
-an integer.
-There may be any number of \fIoption\fR\-\fIvalue\fR 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., \fB::img::logo\fR, \fB::img::large\fR).
-.TP
-\fBimage delete \fR?\fIname name\fR ...?
-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 \fBimage create\fR,
-the existing instances will use the new image.
-.TP
-\fBimage height \fIname\fR
-Returns a decimal string giving the height of image \fIname\fR
-in pixels.
-.TP
-\fBimage inuse \fIname\fR
-Returns a boolean value indicating whether or not the image given by
-\fIname\fR is in use by any widgets.
-.TP
-\fBimage names\fR
-Returns a list containing the names of all existing images.
-.TP
-\fBimage type \fIname\fR
-Returns the type of image \fIname\fR (the value of the \fItype\fR
-argument to \fBimage create\fR when the image was created).
-.TP
-\fBimage types\fR
-Returns a list whose elements are all of the valid image types
-(i.e., all of the values that may be supplied for the \fItype\fR
-argument to \fBimage create\fR).
-.TP
-\fBimage width \fIname\fR
-Returns a decimal string giving the width of image \fIname\fR
-in pixels.
-.PP
-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.
-.SH "BUILT-IN IMAGE TYPES"
-.PP
-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.
-.TP
-\fBbitmap\fR
-Each pixel in the image displays a foreground color, a background
-color, or nothing.
-See the \fBbitmap\fR manual entry for more information.
-.TP
-\fBphoto\fR
-Displays a variety of full-color images, using dithering to
-approximate colors on displays with limited color capabilities.
-See the \fBphoto\fR manual entry for more information.
-.SH "SEE ALSO"
-bitmap(n), options(n), photo(n)
-.SH KEYWORDS
-height, image, types of images, width
-'\" Local Variables:
-'\" mode: nroff
-'\" End: