Range.addOnChangeValue

The #GtkRange::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 GtkRange::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 #GtkRange:round-digits.

It is not possible to use delayed update policies in an overridden #GtkRange::change-value handler.

class Range
gulong
addOnChangeValue
(
bool delegate dlg
,)

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