image - Create and manipulate images
image option ?arg arg ...?
image(1t) Tk Built-In Commands image(1t) ______________________________________________________________________________ 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 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 speci- fies the name for the image; if it is omitted then Tk picks a name of the form imagex, 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, ::img::large). 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 exist- ing instances will use the new image. image height name Returns a decimal string giving the height of image name in pix- els. 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 argu- ment to image create). image width name Returns a decimal string giving the width of image name in pix- els. Additional operations (e.g. writing the image to a file) may be avail- able as subcommands of the image instance command. See the manual page for the particular image type for details. BUILT-IN IMAGE TYPES 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. bitmap Each pixel in the image displays a foreground color, a back- ground color, or nothing. See the bitmap manual entry for more information. photo 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. ATTRIBUTES See attributes(7) for descriptions of the following attributes: +---------------+------------------+ |ATTRIBUTE TYPE | ATTRIBUTE VALUE | +---------------+------------------+ |Availability | runtime/tk-8 | +---------------+------------------+ |Stability | Uncommitted | +---------------+------------------+ SEE ALSO bitmap(n), options(n), photo(n) KEYWORDS height, image, types of images, width NOTES Source code for open source software components in Oracle Solaris can be found at https://www.oracle.com/downloads/opensource/solaris-source- code-downloads.html. This software was built from source available at https://github.com/oracle/solaris-userland. The original community source was downloaded from https://source- forge.net/projects/tcl/files/Tcl/8.6.7/tk8.6.7-src.tar.gz/download. Further information about this software can be found on the open source community website at https://www.tcl.tk/. Tk 4.0 image(1t)