Overview

MrEd is implemented by two functionaly layers. While it is not necessary to think of these layers as separate, the names of built-in classes, procedures, and constants indicate the source layer of the value through the scmwx: or mred: prefix: identifiers prefixed with wx: are part of MrEd's low-level GUI engine, while identifers prefixed with mred: are part of the high-level system that is loaded at start-up time.

Functionally, the toolbox is roughly divided into four parts:

• The core toolbox provides primitive windows and drawing tools
• The media toolbox provides primitives for text and graphics editing
• The geometry management toolbox provides window and control classes with automatic sizing and placement
• The application toolbox provides classes for building complete applications with mulitple windows, menu bars, key bindings, and preferences.

• Starting Up
  • Starting MrEd on the Macintosh
  • Changing the System
• Core Toolbox
• Media Toolbox
  • Basic Organization
    • Administrators
    • Styles
  • File Format
    • Encoding Snips
      • Snip Classes
      • Buffer Data
    • Global Data: Headers and Footers
    • End of Line Ambiguity
    • Flattened Text
    • Caret Ownership
    • Cut and Paste Timestamps
    • Clickbacks
• Geometry Management Toolbox
  • Child Classes
  • Panels
  • Frames and Dialogs
  • Constants
  • Putting it all Together
• Application Toolbox
  • Exiting
  • Files
    • Selecting a Filename
    • Opening a File and Selecting a Format Handler
    • Selecting a Mode for a Text File
    • Buffer and Frame Groups
  • Hyper-text
  • Standard Keyboard and Mouse Mapping
    • Scheme Mode Keyboard Mapping
    • Scheme Interaction Mode Keyboard Mapping
  • Autosaving
  • Autoloading
  • Parenthesis Matching
  • Preferences