gtk:clipboard-request-targets (clipboard func)

clipboard -- a gtk:clipboard object
func -- a gtk:clipboard-targets-received-func callback function to call when the targets are received, or the retrieval fails

Requests the contents of the clipboard as a list of supported targets. When the list is later received, the callback function will be called.

The atoms parameter of the callback function will contain the resulting targets if the request succeeded, or nil if it failed.