SpinButton.connectActivate

gulong connectActivate(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  void)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  gtk.spin_button.SpinButton)))
   &&  Parameters!T.length <  2)

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.

Parameters

`callback`	signal callback delegate or function to connect `void callback(gtk.spin_button.SpinButton spinButton)` `spinButton` the instance the signal is connected to (optional)
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID