deprecated: 3.10 since: 2.4
The ::pre-activate signal is emitted just before the
action in the
action_group is activated
This is intended for
GtkUIManager to proxy the signal and provide global
notification just before any action is activated.
|Available since: 2.4|
|Deprecated since: 3.10|
Please do not use it in newly written code.
The data is owned by the caller of the function.