signal callback delegate or function to connect
void callback(int value, gstvideo.color_balance_channel.ColorBalanceChannel colorBalanceChannel)
value The new value (optional)
colorBalanceChannel 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.