This function creates a fraction GParamSpec for use by objects/elements that want to expose properties of fraction type.
| name |
canonical name of the property specified |
| nick |
nick name for the property specified |
| blurb |
description of the property specified |
| min_num |
minimum value (fraction numerator) |
| min_denom |
minimum value (fraction denominator) |
| max_num |
maximum value (fraction numerator) |
| max_denom |
maximum value (fraction denominator) |
| default_num |
default value (fraction numerator) |
| default_denom |
default value (fraction denominator) |
| flags |
flags for the property specified |
| a newly created parameter specification |
