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The "deactivate" signal is emitted when either a GtkMenuItem within the current menu has been selected or the menu has been cancelled.

This signal initiates the menu's deactivate routine, which removes the key and pointer grabs from the menu and deselects any selected item before popping the menu down. It is largely used internally, and probably carries more overhead when called than the "selection-done" signal emitted under similar conditions.

Callback function

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For authoritative source of the documentation, please refer to http://gtk.php.net/docs.php