Row (PULONG) - output
Address of the current row position of the cursor, where 0 is the top row.
Column (PUSHORT) - output
The address of the current column position of the cursor, where 0 is the leftmost column.
VioHandle (HVIO) - input
This must be zero, unless the caller is a Presentation Manager application; in this case, it must be the value returned by VioCreatePS
rc (APIRET) - returns