SRC Research Report 69
SRC Research Report 69This is a tutorial introduction to programming with Trestle, a Modula-3 window system toolkit currently implemented over the X window system. We assume that you have some experience as a user of window systems, but no previous experience programming with X or other window systems. To run Trestle, you need a copy of SRC Modula-3 and an X server.
The tutorial begins with examples of programming using built-in Trestle interactors and continues by showing you how to build your own interactors: both leaf interactors and interactors that contain their own sub-windows and modify their behavior.
The source code presented in the tutorial is shipped as part of the Modula-3 release from SRC, in the package "trestletutorial." At SRC, you can fetch a copy of this by typing
cp -r /proj/m3/pkg/trestletutorial .
in your home directory. At other sites, you'll have to ask the people who installed SRC Modula-3 where they put the package sources. You will probably want to have a copy of the Trestle Reference Manual (SRC Report 68) nearby as you work through the tutorial.
The first few examples in the tutorial are programs; their source code is reproduced in subdirectories named after that program. The later examples are new classes of interactors. For these, the subdirectories are named after the interactor, and contain both "src" and "test" subdirectories. The "src" directories contain the source code for the interface and implementation of the new interactor, and the "test" directory contains a simple program to exercise the interactor.
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