The ::change-value signal is emitted when a scroll action is
performed on a range. It allows an application to determine the
type of scroll event that occurred and the resultant new value.
The application can handle the event itself and return TRUE to
prevent further processing. Or, by returning FALSE, it can pass
the event to other handlers until the default GTK+ handler is
reached.
The value parameter is unrounded. An application that overrides
the ::change-value signal is responsible for clamping the value to
the desired number of decimal digits; the default GTK+ handler
clamps the value based on "round_digits".
It is not possible to use delayed update policies in an overridden
::change-value handler.
TRUE to prevent other handlers from being invoked for the
signal, FALSE to propagate the signal further
Since 2.6
The ::change-value signal is emitted when a scroll action is performed on a range. It allows an application to determine the type of scroll event that occurred and the resultant new value. The application can handle the event itself and return TRUE to prevent further processing. Or, by returning FALSE, it can pass the event to other handlers until the default GTK+ handler is reached. The value parameter is unrounded. An application that overrides the ::change-value signal is responsible for clamping the value to the desired number of decimal digits; the default GTK+ handler clamps the value based on "round_digits". It is not possible to use delayed update policies in an overridden ::change-value handler. TRUE to prevent other handlers from being invoked for the signal, FALSE to propagate the signal further Since 2.6