Fires when the curent tool becomes active.
ERROR: Syntax information about IARControlEventsHelper.OnCurrentToolMessage may not be in D:\ArcGIS\DotNet\ESRI.ArcGIS.SystemUtility.dll
[C++]
HRESULT OnCurrentToolMessage(
BSTR sMessage
);
[C++]Parameters
sMessage [in] sMessage is a parameter of type BSTR