CHECKBOXSET name state

Sets the state of the checkbox that is identified by name to state. state must be either True (checked) or False (unchecked).

WINDOWCREATE "main "mywindow "mytitle 0 0 100 100 []
GROUPBOXCREATE "mywindow "mygroupbox 10 10 80 40
CHECKBOXCREATE "mywindow "mygroupbox "mycheckbox [Check Me] 20 20 60 20
CHECKBOXSET "mycheckbox "true
CHECKBOXSET "mycheckbox "false
WINDOWDELETE "mywindow