Index: src/libchcore/TOverlappedDataBuffer.h
===================================================================
diff -u -N -r1506d51ff1c0a5d156dab398051efc0c87473e81 -re0588f4598dea526e0869360a0f5ee278e7902a0
--- src/libchcore/TOverlappedDataBuffer.h	(.../TOverlappedDataBuffer.h)	(revision 1506d51ff1c0a5d156dab398051efc0c87473e81)
+++ src/libchcore/TOverlappedDataBuffer.h	(.../TOverlappedDataBuffer.h)	(revision e0588f4598dea526e0869360a0f5ee278e7902a0)
@@ -58,6 +58,7 @@
 
 		DWORD GetErrorCode() const { return m_dwErrorCode; }
 		void SetErrorCode(DWORD dwErrorCode) { m_dwErrorCode = dwErrorCode; }
+		bool HasError() const { return m_dwErrorCode != ERROR_SUCCESS; }
 
 		// OVERLAPPED interface
 		ULONG_PTR GetStatusCode() const { return Internal; }