Sets the origin point of the selection. You can send this message explicitly or by using the Editor_SetAnchorPos inline function.
wParam = (WPARAM) (int) nLogical;
lParam = (LPARAM) (POINT_PTR*) pptPos;
Specifies one of the following values.
Value Meaning POS_VIEW Display Coordinates POS_LOGICAL_A Logical Coordinates (Count double-byte characters as two) POS_LOGICAL_W Logical Coordinates (Count double-byte characters as one) POS_CELL CSV Cell Unit
Pointer to a POINT_PTR structure that specifies the origin point of the selection.
The return value is not used.