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37. Register font file. <Main>
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[Name]
_registerfonts
[Syntax]
#include <graph.h>
short _registerfonts( unsigned char *pathname ) ;
[Description]
Registers font file and initializes the font library.
[Compatibility]
<MS-C Non-Compatible Specification>
(1) This function doesn't check the specified file pathname. Therefore,
the return value of the "_grstatus" function is always "_GROK".
The return value of this function is always "1".
(2) This function doesn't actually register the font file.
<MS-C Compatible Specification>
(1) It is required to call this function before outputting text strings
using "_outgtext" function. If this function has not been called,
"_outgtext" output nothing.