Variant.getDouble
double getDouble() nothrowReturns 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.
Returns
a #gdouble
double getDouble() nothrowReturns 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.