Emitted when the user initiates a value change.
This is a keybinding signal.
Applications should not connect to it, but may emit it with
g_signal_emit_by_name() if they need to control the cursor programmatically.
The default bindings for this signal are Up/Down and PageUp/PageDown.
|Default handler: |
The default handler is called after the handlers added via
|Signal can be directly emitted on objects from user code|
GtkScrollTypeto specify the speed and amount of change.
The data is owned by the caller of the function.