void receiveUserRect(string xSW, string ySW, string xNE, string yNE, int viewIndex)

This method must be exposed by the client if the client calls the MouseModeAPI method setSelectRectMode, parameterized for asynchronous response.  In addition, the client must have previously called the MouseModeAPI method setReceiver.

The SDM provides the coordinates (xSW, ySW)  and (xNE, yNE) of the Southwestern and Northeastern corners, respectively, of the user-drawn rectangle. These are in the Exchange Coordinate System if the map type (of the map in the view where the rectangle was drawn) is NEMR or LLDG; otherwise (if the map type is NRMR), the coordinates are in the map's own non-registered coordinate system. (See Map Types).

The SDM also provides the viewIndex of the view in which the rectangle was drawn..