Tkinter reference: A GUI for Python

16.3 Images in text widgetsYou can put an image or bitmap into a text widget. It is treated as a single characterwhose size is the natural size of the object. See Images and Bitmaps, above.Images are placed into the text widget by calling that widget’s .image_create()method. See below for the calling sequence and other methods for image manipulation.Images are manipulated by passing their name to methods on the text widget. You cangive Tkinter a name for an image, or you can just let Tkinter generate a default name forthat image.16.4 Windows in text widgetsYou can put any Tkinter widget—even a frame containing other widgets—into a textwidget. For example, you can put a fully functional button or a set of radiobuttons intoa text widget.Use the .window_create() method on the text widget to add the embedded widget.Refer to Methods on text widgets, below, for the calling sequence and related methods.16.5 Tags in text widgetsThere are lots of ways to change both the appearance and functionality of the items in atext widget. For text, you can change the font, size, and color. Also, you can make text,widgets, or embedded images respond to keyboard or mouse actions.To control these appearance and functional features, you associate each feature with atag. You can then associate a tag with any number of pieces of text in the widget. The name of a tag can be any string that does not contain white space or periods. There is one special predefined tag called SEL. This is the region currently selected,if any. Since any character may be part of more than one tag, there is a tag stack that ordersall the tags. Entries are added at the end of the tag list, and later entries have priorityover earlier entries. So, for example, if there is a character c that is part of two taggedregions t 1 and t 2 , and t 1 is deeper in the tag stack than t 2 , and t 1 wants the text to begreen and t 2 wants it to be blue, c will be rendered in blue because t 2 has precedenceover t 1 . You can change the ordering of tags in the tag stack.Tags are created by using the .tag_add() method on the text widget. See Methods ontext widgets, below, for information on this and related methods.New Mexico Tech Computer Center Tkinter reference: The Text widget Page 51