UI lock

UI lock blocks editing in LTCast so a stray click or bump cannot change the show while it is running. Use it during a live show. It is not a password: anyone at the keyboard can unlock it.

Enabling and disabling UI lock

• Lock — press Ctrl+L (Windows) / Cmd+L (macOS). There is no lock button or menu item
• Unlock — press Ctrl+L / Cmd+L again, or click the LOCKED pill in the status bar at the bottom of the window

A pulsing 🔒 LOCKED pill appears in the status bar while the lock is on, and the locked areas are dimmed. In the Tour view a LOCKED badge is shown too. There is no banner across the top of the window.

What is disabled when locked

The lock covers editing in both the song view and the Tour view. In the song view it includes:

• The whole setlist panel — editing and choosing songs with the mouse
• The whole right-hand panel — Cues, Next Cue and the other tabs
• The Offset controls
• The loop controls (the Loop button and the A / B buttons)
• The Force FPS and TC Generator controls under the timecode

While locked, only Space (play / pause), Esc (stop) and F11 (fullscreen) work from the keyboard, together with Ctrl+L itself, Panic, the Chase toggle (Ctrl+Shift+C) and the interface-zoom keys.

The lock is not saved in the show file, and turning it on or off does not mark the show as unsaved.

What continues running when locked

• All protocol outputs — LTC, MTC, MIDI Clock, Art-Net, and OSC continue streaming without interruption
• The timecode display and waveform playhead continue updating
• The fullscreen TC display continues updating
• The status bar stays live, so you can still click CHECK or the output pills

Recommended workflow

Engage UI lock after your final pre-show check and before doors open. This ensures that nothing changes accidentally during the show — even if someone else sits at the computer, opens the laptop, or reaches past the operator. Unlock only when you need to make an intentional change.