Simple error management for the FreeType library.

Copyright 1996, 1997 by David Turner, Robert Wilhelm, and Werner Lemberg.

This file is part of the FreeType project, and may only be used modified and distributed under the terms of the FreeType project license, LICENSE.TXT. By continuing to use, modify or distribute this file you indicate that you have read the license and understand and accept it fully.

The Pascal version of the library doesn't support multiple threads. We use a global error variable, called simply "error" to report all defects. The various functions return an error condition, which can be either Success (false) or Failure (true).

Note that the use of macros in the C version to automate error reporting makes the two source trees very similar, even if they differ from some design points like this one.

Rasterizer not Initialized.
Profile Table Overflow.
Negative Height encountered.
Invalid value encountered.
Global error variable used for the FreeType library.