Determines the first item type of a tuple or dictionary entry type.

This function may only be used with tuple or dictionary entry types, but must not be used with the generic tuple type G_VARIANT_TYPE_TUPLE.

In the case of a dictionary entry type, this returns the type of the key.

NULL is returned in case of type being G_VARIANT_TYPE_UNIT.

This call, together with Variant.typeNext provides an iterator interface over tuple and dictionary entry types.

class VariantType

Return Value

the first item type of type, or NULL

Since 2.24