+
+protected:
+
+ /**
+ The derived class must implement this function to actually draw the
+ item with the given index on the provided DC.
+
+ @param dc
+ The device context to use for drawing.
+ @param rect
+ The bounding rectangle for the item being drawn (DC clipping
+ region is set to this rectangle before calling this function).
+ @param n
+ The index of the item to be drawn.
+
+ @todo Change this function signature to non-const.
+ */
+ virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const = 0;
+
+ /**
+ The derived class must implement this method to return the height of
+ the specified item (in pixels).
+ */
+ virtual wxCoord OnMeasureItem(size_t n) const = 0;