Looks up a widget style property as defined by @provider for the widget represented by @path.
#GtkWidgetPath to query
state to query the style property for
The #GParamSpec to query
return location for the property value
Return: %TRUE if the property was found and has a value, %FALSE otherwise
3.0
See Implementation
Looks up a widget style property as defined by @provider for the widget represented by @path.