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 Passing Far Strings to C Using StringAddress and StringLength - Q60852
 
 The following program demonstrates how to pass a variable-length far
 string to a Microsoft C function using the Basic run-time routines
 StringAddress and StringLength. These routines are necessary to obtain
 the string's far address and length.
 
 Code Example
 ------------
 
 '----------- Here is the file TESTB.BAS
 DECLARE SUB TestC CDECL (A$)
 A$ = "ABCDEFGHIJKLMNOPQRSTUVWXYZ" + CHR$(0)
                 ' Add 0h at the end for the C printf function.
 CLS : PRINT : PRINT
 PRINT "BASIC: "; A$
 PRINT "Len: "; LEN(A$)
 PRINT
 CALL TestC(A$)
 LOCATE CSRLIN + 3
 PRINT "Back in BASIC"
 SYSTEM
 
 // ---------- Here is the file TESTC.C
 extern char far * pascal StringAddress(long near *);
 extern int pascal StringLength(long near *);
 
 void TestC (long near * Desc)
 {
   int  len;
   char far *segadd;
 
   len = StringLength( Desc );
   segadd = StringAddress( Desc );
   printf("C: %s\", segadd);
   printf("Len: %i\", len);
 }
 
 Compile and link options, as follows:
 
    BC /o TESTB;
    CL -c -AM TESTC.C
    LINK /noe TESTB TESTC;
 
 The output should from this program should be as follows:
 
    BASIC: ABCDEFGHIJKLMNOPQRSTUVWXYZ
    Len: 27
 
    C: ABCDEFGHIJKLMNOPQRSTUVWXYZ
    Len: 27
 
    Back in BASIC