November 1999
Intermediate to advanced
832 pages
19h 28m
English
Content preview from Practical Programming in Tcl & Tk, Third EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Tcl_Main and Tcl_AppInit
This section describes how to make a custom main program that includes Tcl. However, the need for custom main programs has been reduced by the use of loadable modules. If you create your commands as a loadable package, you can just load them into tclsh or wish. Even if you do not need a custom main, this section will explain how all the pieces fit together.
The Tcl library supports the basic application structure through the Tcl_Main procedure that is designed to be called from your main program. Tcl_Main does three things:
It calls Tcl_CreateInterp to create an interpreter that includes all the standard Tcl commands like set and proc. It also defines a few Tcl variables like argc and argv. These have the command-line ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
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.
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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.