Writes a character string to the display.
#define INCL_VIO
#include <os2.h>
PCH CharStr; /* String to be written. */
ULONG Length; /* Length of character string. */
ULONG Row; /* Starting row position. */
ULONG Column; /* Starting column position. */
HVIO VioHandle; /* VIO presentation-space handle. */
APIRET rc; /* Return code. */
rc = VioWrtCharStr(CharStr, Length, Row, Column,
VioHandle);