* Tool menu items use wx.ITEM_RADIO
* New polygon and scribble tools
* Text tool uses wx.FontDialog rather than home grown dialog
* Switched to double-buffering (code borrowed from doodle sample.)
* Spent a lot of time on improving handling of canvas scrolling redraws
which look bad under __WXMSW__, IMHO.
* All tools are subclasses of DrawingTool now.
* All objects are subclasses of the base DrawingObject now (rather than
typecode switch)
* Majority of event handling delegated to tools
* Manipulation of handles refactored to move most of the logic into
DrawingObject subclasses
* Use GenBitmapToggleButton for the Tool buttons instead of reimplementing
same functionality.
* Nicer looking fill/stroke preview (I think anyway)
* Toggle for choosing between wx.DC and wx.GCDC
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_8_BRANCH@46370 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
