June 2003
Intermediate to advanced
960 pages
20h 55m
English
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Chapter 29. Binding Commands to Events
This chapter introduces the event binding mechanism in Tk. Bindings associate a Tcl command with an event like a mouse click or a key stroke. There are also facilities to define virtual events like <<Cut>> and <<Paste>> that are associated with different keystrokes on different platforms. Tcl commands discussed are: bind, bindtags, and event.
Bindings associate a Tcl command with a sequence of events from the window system. Events include key press, key release, button press, button release, mouse entering a window, mouse leaving, window changing size, window open, window close, focus in, focus out, and widget destroyed. The bindings are defined on binding tags, and each widget is associated with an ordered ...
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