Changed from using image.NRGBA to image.RGBA (premultiplied alpha) in Area.Paint() since it'll be easier to work with on Windows after applying what Treeki/Ninjifox suggested I do instead of what I am doing now.
Switched to alpha-premultiplied image data for Areas on Mac OS X. This is the easiest change; it involves removing one bit flag from the NSBitmapImageRep constructor (the other changes are indentation changes).
Added a general-purpose function to produce a native-endian ARGB representation of the image. I thought cairo image surfaces would work, but they're not designed for reading in images, the cairo functions for reading image data were introduced in the next version (1.12), and GDK-Pixbuf only does non-alpha-premultiplied... This can be used on Windows though.
Rewrote Area code on Windows to use alpha-premultiplied RGB and only use GDI functions to do it... and it doesn't quite work right yet.
Switched to ARGB drawing in Areas on GTK+.
Documented the thread safety of AreaHandler and Area.SetSize().
Fixed ARGB rendering on Windows. Now to make it flicker-free...
Made Areas on Windows flicker-free.
Updated README to reflect the new Area image.RGBA changes.
Removed the GDI+ dependency on Windows since we no longer use it.
Verified that the Listbox item text is vertically positioned properly on Mac OS X.
Fixed Comboboxes on Mac OS X having an initial selection. This also lays the groundwork for adding Combobox/Listbox.Select() as a public function...
Fixed Listboxes on Mac OS X having an initial selection.
More TODOs and future plans.
More TODOs and future plans. Also finally removed the TODO about incorrect Area redraw on Windows.
More TODO/future plan shuffling.
Pinned down horizontal scrollbar behavior on Listboxes; also reworded the Area scrollbar behavior sentence a bit to match. Now to actually implement the changes...
Added horizontal scrollbars to Listboxes on Windows. Also fixed typos and bugs in Windows sysData.selectedTexts().
More shuffling of TODOs and future plans.
Consolidated NSScrollView code on Mac OS X to be all in one place.