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. Page 1 Plan 9 (printed 5/3/24) 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), Page 2 Plan 9 (printed 5/3/24)