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Check if a widget path is a valid loon widget

Source: R/l_isLoonWidget.R
l_isLoonWidget.Rd

This function can be useful to check whether a loon widget is has been closed by the user.

Usage

l_isLoonWidget(widget)

Arguments

widget

widget path as a string or as an object handle

Value

boolean, TRUE if the argument is a valid loon widget path, FALSE otherwise