before example

Suppose you have a form that contains a bunch of spinboxes for measurements. You want to be able to set them all to zero with the click of a button.

function resetButton_onClick( )

local obj 

obj = form.first // First control in z-order 

do 

if obj.className == "SPINBOX" 

obj.value := 0 

endif 

obj := obj.before // Next control in z-order 

until obj == form.first // Until you get back to first control 

Compare this loop with the example for elements.