Entity: predicate

check_box( )
check_box(Arg1, ... , ArgN)

Creates a check box control.

Put inside the brackets only these arguments which you need. All other arguments will be set by default. The arguments may be any of the following (the order is not important).
handle(Handle) handle to this check box. 
parent(Parent) handle to the parent window.
class(Check_func) predicate which will receive the messages from this check box.
text(Text) the text which is on the check box
pos(X,Y) coordinates of upper left corner
size(Width, Height)  size of the check box
checked  flag (default off)
grayed  flag (default off)

Look at check box methods:

R is get_check_box_value(Check_Box)
set_check_box_value(Check_Box, Value)

See also:

Look at the example:
Check Box.spj (in folder Examples)