signal callback delegate or function to connect
void callback(gtk.spin_button.SpinButton spinButton)
spinButton 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 Activate signal.
Emitted when the spin button is activated.
The keybindings for this signal are all forms of the <kbd>Enter</kbd> key.
If the <kbd>Enter</kbd> key results in the value being committed to the spin button, then activation does not occur until <kbd>Enter</kbd> is pressed again.