Currently only supported by the native GTK and OS X implementations
but not by the generic one.
@style{wxDV_HORIZ_RULES}
- Display fine rules between row if supported.
+ Display the separator lines between rows.
@style{wxDV_VERT_RULES}
- Display fine rules between columns is supported.
+ Display the separator lines between columns.
@style{wxDV_VARIABLE_LINE_HEIGHT}
Allow variable line heights.
This can be inefficient when displaying large number of items.