CharStr (PCH) - input
Address of the character string to be written.
Length (ULONG) - input
Length, in bytes, of the character string.
Row (ULONG) - input
Column (ULONG) - input
VioHandle (HVIO) - input
This must be 0, unless the caller is a Presentation Manager application; in this case, it must be the value returned by VioCreatePS.
rc (APIRET) - returns