ToggleButtonValue

Help Contents GUI programming ToggleButtons ToggleButtonValue
ToggleButtonOnClick ToggleButtonSetValue

ToggleButtonValue aToggleButton

outputs true if the ToggleButton aToggleButton is checked, false otherwise.

Example: 

tb=ToggleButton [][Hide Turtle][
	ifelse ToggleButtonValue tb [hideTurtle][showTurtle]
	updateGraph]

Examples:

References:

ToggleButtonOnClick ToggleButtonSetValue