glib:variant-type-is-basic (vtype)

vtype -- a g:variant-type instance

True if vtype is a basic type.

Determines if the given variant type is a basic type. Basic types are booleans, bytes, integers, doubles, strings, object paths and signatures. Only a basic variant type may be used as the key of a dictionary entry. This function returns false for all indefinite types except the "?" type string.