MatterHackers/MatterControl — pull request #98 by mmoening (2014-11-17 23:52:08+00:00)
Title: Split Button Implementation:

Added DynamicDropDownMenu( can add to drop down via .add method)
DropDownMenuWidget (made drawDirectionalArrow virtual)
Added Factory for DropDownMenu and Split Button
Add/used Factories in View3DWidget