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For example, I inserted many link widgets like this:

(widget-create `(link :tag "Test link" :button-prefix "" :button-suffix "" :button-face nil :format "%[%t\n%]" :help-echo "" :action nil 'test))

Later I want to retrieve a specific link widget at point to modify some of its values, is it possible?

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I found the answer:

(get-char-property (point) 'button)

And I will get the widget of type 'button at point. link is also a widget of 'button type.

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