November 1999
Intermediate to advanced
832 pages
19h 28m
English
Content preview from Practical Programming in Tcl & Tk, Third Edition
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Manipulating Menus and Menu Entries
There are a number of operations that apply to menu entries. We have already introduced the add operation. The entryconfigure operation is similar to the configure operation for widgets. It accepts the same attribute-value pairs used when the menu entry was added. The delete operation removes a range of menu entries. The rest of the operations are used by the library scripts that implement the standard bindings for menus.
 | A menu entry is referred to by an index. The index can be numerical, counting from zero, or symbolic. Table 27-3 summarizes the index formats. One of the most useful indices is a pattern that ... |
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.