gtk:clipboard-wait-for-contents (clipboard target)

clipboard -- a gtk:clipboard object
target -- a gdk:atom-as-string string representing the form into which the clipboard owner should convert the selection

A newly allocated gtk:selection-data instance or nil if retrieving the given target failed.

Requests the contents of the clipboard using the given target. This function waits for the data to be received using the main loop, so events, timeouts, etc, may be dispatched during the wait.