1.53.1 Instance variables

display_manager <- members: chain

Chain of currently attached display objects, one for each monitor. Gains and loses entries as monitors are hotplugged.

display_manager <-> test_queue: bool

When @on, redraw passes are interrupted whenever events become available, yielding faster perceived response while typing or dragging. Default is @on everywhere.

display_manager <-> focus_message: code*

Optional code object invoked with the frame that gained keyboard focus. Used by tools (e.g. the symbol picker) to track the active window without polling.

display_manager <-> system_colours_message: code*

Optional code object that is executed by display_manager->system_colours_changed after reloading the system colours and before redrawing. library(pce_theme) uses this to select the theme that matches the new desktop settings.

display_manager <- inspect_handlers: chain

Handlers that support inspector tools. The chain is shared by all displays: it is also display<-inspect_handlers of each display.

See also

display<-inspect_handlers

display_manager-audio_output: [bool]

@on if there is a device to play sound on. The slot is @default until the first request, which starts the audio subsystem. From then on the value follows the playback devices that are added and removed. Use this to make sound optional, as playing a sound or audio_stream without a device prints an error.