*/
bool IsSelected(size_t item) const;
- /**
- This method is used to draw the items background and, maybe, a border
- around it.
-
- The base class version implements a reasonable default behaviour which
- consists in drawing the selected item with the standard background
- colour and drawing a border around the item if it is either selected or
- current.
-
- @todo Change this function signature to non-const.
- */
- virtual void OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const;
-
- /**
- This method may be used to draw separators between the lines. The
- rectangle passed to it may be modified, typically to deflate it a bit
- before passing to OnDrawItem().
-
- The base class version of this method doesn't do anything.
-
- @param dc
- The device context to use for drawing.
- @param rect
- The bounding rectangle for the item.
- @param n
- The index of the item.
-
- @todo Change this function signature to non-const.
- */
- virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
-
/**
Selects or deselects the specified item which must be valid (i.e. not
equal to @c wxNOT_FOUND).
@todo Change this function signature to non-const.
*/
- virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const;
+ virtual void OnDrawItem(wxDC& dc, const wxRect& rect, size_t n) const = 0;
+
+ /**
+ This method is used to draw the items background and, maybe, a border
+ around it.
+
+ The base class version implements a reasonable default behaviour which
+ consists in drawing the selected item with the standard background
+ colour and drawing a border around the item if it is either selected or
+ current.
+
+ @todo Change this function signature to non-const.
+ */
+ virtual void OnDrawBackground(wxDC& dc, const wxRect& rect, size_t n) const;
+
+ /**
+ This method may be used to draw separators between the lines. The
+ rectangle passed to it may be modified, typically to deflate it a bit
+ before passing to OnDrawItem().
+
+ The base class version of this method doesn't do anything.
+
+ @param dc
+ The device context to use for drawing.
+ @param rect
+ The bounding rectangle for the item.
+ @param n
+ The index of the item.
+
+ @todo Change this function signature to non-const.
+ */
+ virtual void OnDrawSeparator(wxDC& dc, wxRect& rect, size_t n) const;
/**
The derived class must implement this method to return the height of
the specified item (in pixels).
*/
- virtual wxCoord OnMeasureItem(size_t n) const;
+ virtual wxCoord OnMeasureItem(size_t n) const = 0;
};