Gets the user data of @menu.
This function can be used from the UI Process to get user data previously set
from the Web Process with webkit_context_menu_set_user_data().
classContextMenu
Variant
getUserData
()
Return Value
Type: Variant
the user data of @menu, or %NULL if @menu doesn't have user data
Gets the user data of @menu. This function can be used from the UI Process to get user data previously set from the Web Process with webkit_context_menu_set_user_data().