ToggleButtonEnable

Help Contents GUI programming ToggleButtons ToggleButtonEnable
ToggleButtonSetValue Miscellaneous GUI elements

ToggleButtonEnable aToggleButton state

Command. If state is true then it enables the ToggleButton aToggleButton, if state is false then it disables the ToggleButton.

state must be a boolean.

Example: 

tb=ToggleButton [][Hide Turtle][
	ifelse ToggleButtonValue tb [hideTurtle][showTurtle]
	updateGraph]
ToggleButtonEnable tb false
;Click on the ToggleButton again --nothing happens
ToggleButtonEnable tb true	;enabled again

Reference:

ToggleButtonSetValue Miscellaneous GUI elements