- Fix drawing onto loaded bitmaps.

- Fix drawing onto loaded bitmaps.
- Don't call CreateCompatibleDC for each paint
- Make the floating windows translucent unless the cursor is over them
- Put in some temp code for basic sketches. (this functionality needs incorporating into separate tool functions)
- change the internal name 'floating toolbars' to 'floating windows' to avoid confusion.

svn path=/trunk/; revision=21376