Cast as fn pointer to fix build error
Fix TreeIter::new() failure by not creating temporary TreeIter object
Merge pull request #167 from oakes/fn-pointer

Cast as fn pointer to fix build error
Merge pull request #168 from oakes/treeiter_fix

Fix bug in TreeIter::new()
Checkup
Add device source code
New gdk widget : Device
Created a widget folder
New gdk widget : Screen
Add new gdk widget : Visual
Add new gdk widget : DeviceManager
New gdk module : Cursor
Add new gdk widget : Pixbuf
Add new gdk widgets : Point and Rectangle
Add general gdk functions
Add new gdk widget : DisplayManager
Add RGBA functions
new gdk widget : FrameClock
Add new gdk widget : FrameTimings
Add Window functions and a new gdk widget : Geometry