Sets our main struct and passes it to the parent class.
the main Gtk struct as a void*
Get the main Gtk struct
Appends append_value to the GstValueList in value.
Appends append_value to the GstValueList in value.
Concatenates copies of value1 and value2 into a list. Values that are not of type GST_TYPE_LIST are treated as if they were lists of length 1. dest will be initialized to the type GST_TYPE_LIST
Gets the number of values contained in value.
Gets the value that is a member of the list contained in value and has the index index.
Merges copies of value1 and value2. Values that are not of type GST_TYPE_LIST are treated as if they were lists of length 1.
Prepends prepend_value to the GstValueList in value.
the main Gtk struct