User Interface

There are two low-level ways to draw 2d graphical objects.

• One is via creating ParaUIObject controls (like buttons, containers, editbox). These controls are managed in C++ and created in NPL scripts.
• The other is creating owner draw ParaUIObject, and do all the drawings with Painting API in NPL scripts, such as draw rect, lines, text, etc.

Moreover, there are a number of high-level graphical libraries written in NPL which allows you to create 2D user interface more easily.

• IDE controls is NPL wrapper of the low-level C++ API. It provides more versatile controls than the raw ParaUIObjects.
  • One old implementation is based on ParaUIObject controls.
  • One new implementation is based on Painting API, in System.Window.UIElement namespace.
• MCML/NPL is a HTML/JS like mark up language to create user interface.
  • One old implementation is based on ParaUIObject controls.
  • One new implementation is based on Painting API, in System.Window.mcml namespace.

Further Reading