getDouble
Returns the double precision floating point value of @value.
It is an error to call this function with a @value of any type other than %G_VARIANT_TYPE_DOUBLE.
Return
a #gdouble
Since
2.24
Returns the double precision floating point value of @value.
It is an error to call this function with a @value of any type other than %G_VARIANT_TYPE_DOUBLE.
a #gdouble
2.24