HRESULT OnToolChangeBlockRegion( IIntsCollection* blocksToChange, IRegion* NewRegion, VARIANT_BOOL* Cancel );
void OnToolChangeBlockRegion( IIntsCollection blocksToChange, Region NewRegion, out bool Cancel );
Sub OnToolChangeBlockRegion( _ blocksToChange As IIntsCollection, _ NewRegion As Region, _ ByRef Cancel As Boolean _ )
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