- wxGrid now derives from wxScrolledWindow
- Row labels, col labels, corner labels and grid cell area
implemented as separate classes
The new design fixes the display problems (bad flicker when
scrolling) and simplifies the internal handling of grid cell
coordinates, the edit control etc.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@5818 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775