vtkChartSelectionHelper: fix Doxygen warnings

Doxygen was complaining about these functions not having matching file
members for them. This header is not installed anyways, so just hide
them from Doxygen.

Charts/Core/vtkChartSelectionHelper.h

@@ -14,9 +14,8 @@
 =========================================================================*/
 
 /**
- * @class   vtkChartSelectionHelper
- * @brief   helper functions for making selections in
- * charts.
+ * @namespace vtkChartSelectionHelper
+ * @brief     helper functions for making selections in charts.
  *
  *
  * This contains several inline methods intended for use inside chart
@@ -45,7 +44,7 @@
 namespace vtkChartSelectionHelper
 {
 
-/**
+/*
  * Populate the annotation link with the supplied selectionIds array, and set
  * the appropriate node properties for a standard row based chart selection.
  */
@@ -94,8 +93,7 @@ static void MakeSelection(vtkAnnotationLink *link, vtkIdTypeArray *selectionIds,
   }
 }
 
-//@{
-/**
+/*
  * Subtract the supplied selection from the oldSelection.
  */
 static void MinusSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelection)
@@ -110,7 +108,6 @@ static void MinusSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelecti
   vtkIdType size = selection->GetNumberOfTuples();
   vtkIdType i = 0;
   vtkIdType iOld = 0;
-//@}
 
   while (i < size && iOld < oldSize)
   {
@@ -141,8 +138,7 @@ static void MinusSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelecti
   }
 }
 
-//@{
-/**
+/*
  * Add the supplied selection from the oldSelection.
  */
 static void AddSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelection)
@@ -169,10 +165,8 @@ static void AddSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelection
     *ptrSelection = *i;
   }
 }
-//@}
 
-//@{
-/**
+/*
  * Toggle the supplied selection from the oldSelection.
  */
 static void ToggleSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelection)
@@ -219,9 +213,8 @@ static void ToggleSelection(vtkIdTypeArray *selection, vtkIdTypeArray *oldSelect
     *ptrSelection = *it;
   }
 }
-//@}
 
-/**
+/*
  * Build a selection based on the supplied selectionMode using the new
  * plotSelection and combining it with the oldSelection. If link is not NULL
  * then the resulting selection will be set on the link.
@@ -259,8 +252,7 @@ static void BuildSelection(vtkAnnotationLink *link, int selectionMode,
   }
 }
 
-//@{
-/**
+/*
  * Combine the SelectionMode with any mouse modifiers to get an effective
  * selection mode for this click event.
  */
@@ -282,7 +274,6 @@ static int GetMouseSelectionMode(const vtkContextMouseEvent &mouse, int selectio
   }
   return selectionMode;
 }
-//@}
 
 } // End vtkChartSelectionHelper namespace