check_box
Entity: predicate

Usage:
check_box(Handle, Parent, Check_func,Text, X, Y, Width, Height)

Creates a check box control.
 
Handle handle. Use _ if you don't need it. 
Parent handle of the parent window. Use _ for default.
Check_func predicate which will receive edit messages
Text the text on the control
X,Y coordinates of upper left corner
Width, Height  size of the window

Look at check box methods:

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

See also:
window
get_check_box_value

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