signal callback delegate or function to connect
void callback(gstvideo.color_balance_channel.ColorBalanceChannel channel, int value, gstvideo.color_balance.ColorBalance colorBalance)
channel The #GstColorBalanceChannel (optional)
value The new value (optional)
colorBalance the instance the signal is connected to (optional)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
Connect to ValueChanged signal.
Fired when the value of the indicated channel has changed.