Dock.connectAdoptWidget

gulong connectAdoptWidget(T)(T callback,  Flag!"After" after =  No.After) if (isCallable!T
    &&  is(ReturnType!T ==  bool)
   && (Parameters!T.length <  1 || (ParameterStorageClassTuple!T[0]  ==  ParameterStorageClass.none &&  is(Parameters!T[0] :  panel.widget.Widget)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  panel.dock.Dock)))
   &&  Parameters!T.length <  3)

Connect to AdoptWidget signal.

Signal is emitted when a widget is requesting to be added via a drag-n-drop event.

This is generally propagated via #PanelFrame::adopt-widget to the dock so that applications do not need to attach signal handlers to every #PanelFrame.

Parameters

`callback`	signal callback delegate or function to connect `bool callback(panel.widget.Widget widget, panel.dock.Dock dock)` `widget` a #PanelWidget (optional) `dock` the instance the signal is connected to (optional) `Returns` [gdk.types.EVENT_STOP] to prevent dropping, otherwise [gdk.types.EVENT_PROPAGATE] to allow adopting the widget.
`after`	Yes.After to execute callback after default handler, No.After to execute before (default)

Returns

Signal ID