why to set autodeclaration property to yes in combo box
set Auto Declaration Property to Yes
why?
It will allow us to reference this Combo Box and retrieve the value later in this article.
ret = super() // essentially just tells the system to do what the control is supposed to do,
and display a new value anytime a new value is selected.
what is GUID?
A GUID (a globally unique identifier) is a 16 byte, or a 128 bit integer that can be used
across all computers and networks wherever a unique identifier is required.
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