00001 //345678901234567890123456789012345678901234567890123456789012345678901234567890 00002 #ifndef Impala_Visualization_Plot_PlotNeedleListener_h 00003 #define Impala_Visualization_Plot_PlotNeedleListener_h 00004 00005 namespace Impala { 00006 namespace Visualization { 00007 namespace Plot { 00008 00009 class PlotNeedle; 00010 00011 class PlotNeedleListener 00012 { 00013 public: 00014 virtual void PlotNeedleChanged(PlotNeedle *src, double nX, void* userData) 00015 { 00016 } 00017 }; 00018 00019 }//namespace Plot 00020 }//namespace Visualization 00021 }//namespace Impala 00022 #endif