Fires when label editing begins.
ERROR: Syntax information about ITOCControlEventsHelper.OnBeginLabelEdit may not be in D:\ArcGIS\DotNet\ESRI.ArcGIS.SystemUtility.dll
[C++]
HRESULT OnBeginLabelEdit(
long x,
long y,
VARIANT_BOOL* CanEdit
);
[C++]Parameters
x [in] x is a parameter of type long y [in] y is a parameter of type long CanEdit [in, out] CanEdit is a parameter of type VARIANT_BOOL