gtk:print-settings-double-with-default (settings key default)

settings -- a gtk:print-settings object
key -- a string with a key
default -- a double float number with the default value

The double float number associated with key.

Returns the double float number represented by the value that is associated with key, or default if the value does not represent a double float number. Double float numbers are parsed with the g_ascii_strtod() function.