Method
GioActionGroupget_action_parameter_type
since: 2.28
Declaration [src]
const GVariantType*
g_action_group_get_action_parameter_type (
GActionGroup* action_group,
const gchar* action_name
)
Description [src]
Queries the type of the parameter that must be given when activating
the named action within action_group
.
When activating the action using g_action_group_activate_action()
,
the GVariant
given to that function must be of the type returned
by this function.
In the case that this function returns NULL
, you must not give any
GVariant
, but NULL
instead.
The parameter type of a particular action will never change but it is possible for an action to be removed and for a new action to be added with the same name but a different parameter type.
Available since: 2.28
Parameters
action_name
-
Type:
const gchar*
The name of the action to query.
The data is owned by the caller of the method. The value is a NUL terminated UTF-8 string.
Return value
Type: GVariantType
The parameter type.
The returned data is owned by the instance. |
The return value can be NULL . |