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Using Vsystem Graphical Applications

All Vsystem graphical applications use a library of portable graphics routines, which enables the applications to run on X Windows or Windows. This library has a configuration file, vgi.vdef, that you can use to set up some defaults for the Vsystem Graphics Interface (VGI) library. When you run a Vsystem graphical application, the VGI library searches for a vgi.vdef file in the search order listed below. The search will continue through the entire list, reading every located .vdef file. If a duplicated keyword is encountered in any of these files, the last-read value for this keyword will override the previous value(s).
Search order for the vgi.vdef file:
The Vsystem root directory.
  • The Vsystem host-specific directory.
  • The user's home directory (translation of HOMEDRIVE and HOMEPATH for Windows, sys$login for OpenVMS, and HOME for Linux).
  • The current working directory.
If you want to specify certain keywords that cannot be overridden by user settings, place these keywords in a vgi_system.vdef file; this file is searched for in the following directories:
  • The Vsystem host-specific directory.
  • The Vsystem root directory.
The configuration file consists of any of the keywords found in VGI Configuration Keywords, followed by a value. String values that may contain spaces should be enclosed in quotation marks. In addition to the command-line interface, you may also use VGI Configuration Setup to specify the contents of the vgi.vdef file.