+VikLayerTypeEnum vik_layer_type_from_string ( const gchar *str );
+
+typedef struct {
+ VikLayerParamData data;
+ VikLayerParamType type;
+} VikLayerTypedParamData;
+
+void vik_layer_typed_param_data_free ( gpointer gp );
+VikLayerTypedParamData *vik_layer_typed_param_data_copy_from_data ( VikLayerParamType type, VikLayerParamData val );
+VikLayerTypedParamData *vik_layer_data_typed_param_copy_from_string ( VikLayerParamType type, const gchar *str );
+
+G_END_DECLS
+