MessageButtonNode

A widget representing a button that writes a value to a pv when pressed

• Special Attributes

Name	Type	Description
geometry	Rect	A rectangle describing the position and dimensions of the widget
text	String	The widget’s display text
foreground	Color	Widget foreground color
background	Color	Widget background color
font	Font	Widget display font
pv	String	The PV that will be written to
value	String	The value to write to the PV
visibility	String	A pv that determines the visibility of the widget, visibility is turned off if the PV’s value is zero. This logic is inverted if the !Not tag is used instead of String

• Examples

StopButton: !MessageButton
    geometry: 140x26
    background: *alarm_red
    foreground: *alarm_yellow
    text: "STOP"
    pv: "$(P)$(M).STOP"
    value: 1

Message buttons are often used in pairs for open/close or enable/disable controls:

- !MessageButton
    geometry: 100x25
    background: $006400
    foreground: $FFFFFF
    text: "Open"
    pv: "$(P)$(R)State"
    value: 0

- !MessageButton
    geometry: 100x25
    background: $8B0000
    foreground: $FFFFFF
    text: "Close"
    pv: "$(P)$(R)State"
    value: 1