/// <summary> /// Gets the value of a control variable (in main) /// </summary> public HTuple GetCtrlVarTuple(int index) { IntPtr tuple; HDevProgramCall.HCkE(EngineAPI.GetCtrlVarTuple(this.call, index, out tuple)); GC.KeepAlive((object)this); return(HalconAPI.LoadTuple(tuple)); }