Oberon - Programming new gadgets

• Objective
• Introduction
• Programming a new gadget type
  • The New procedure
  • The message handler
• Messages derived from Display.FrameMsg
  • Display.DisplayMsg
  • Display.PrintMsg
  • Oberon.InputMsg
    • Tracking the mouse
    • Programming a caret
  • Oberon.ControlMsg
• Objects messages
  • Objects.AttrMsg
  • Objects.FileMsg
  • Objects.CopyMsg
• Programming a new document type
  • Load and store a document
  • Special attributes of a document
  • Displaying a document