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TAKING CONTROL, PART II

• the (G)UI reflects the state of the program.
• the GUI must be able to change its appearance at any time: buttons toggled, text highlighted/modified, visual elements move, etc. etc.
  • MIDI control surface fader is moved ... on-screen fader needs to move.
  • automation playback changes gain ... on-screen fader needs to move.
  • MTC sends transport back to start, where automation supplies a new gain value ... on-screen fader needs to move.
• most GUI toolkits are not designed with this in mind.
• let's talk about MVC