checkbox -- create a new checkbox

CHECKBOX x,y, ID$, Label$, IsSelected, View$

Set up a checkbox named ID$ at the position (x,y). It will display the label Label$ next to the box. If IsSelected is set to true, the checkbox will be selected.

You can use option set to disable the checkbox or to change the label.

Message:
The checkbox when selected will send a message string with ID$+":ON", and when deselected with the message string ID$+":OFF".

Layout:
In standard layout, the checkbox will follow the lower, right corner of the view or window.

Design:
Try to align checkboxes below each other. Also put them in groups (e.g. in a boxview) when you have many checkboxes.

window open 100,100 to 400,200, "Example", "Example"
checkbox 10,10, "MyCheckBox", "Select this checkbox", false, "Example"
while(not quitting)
	m$ = message$
	if(m$ = "MyCheckBox:OFF|") alert "The checkbox is deselected", "Ok", "info"
	if(m$ = "MyCheckBox:ON|") alert "The checkbox is selected", "Ok", "info"
	if(instr(m$, "Quit")) quitting = true
wend
window close "Example"

Whenever the checkbox is selected or deselected, an alert window will tell you.