Displays the Select Within dialog box, where the user chooses the map layer containing the features that will be selected if they fall within the currently selected features.
This method is the equivalent of the Select > Select Within menu command in the user interface.
Note that this method does not work during a busy state. For additional information about the busy state, refer to "Handling Busy State and Map Refresh" chapter in the Autodesk MapGuide Developer's Guide.
-12 (invalid selection)