Widget.connectDragBegin

gulong connectDragBegin(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] :  gdk.drag_context.DragContext)))
   && (Parameters!T.length <  2 || (ParameterStorageClassTuple!T[1]  ==  ParameterStorageClass.none &&  is(Parameters!T[1] :  gtk.widget.Widget)))
   &&  Parameters!T.length <  3)

Connect to DragBegin signal.

The ::drag-begin signal is emitted on the drag source when a drag is started. A typical reason to connect to this signal is to set up a custom drag icon with e.g. [gtk.widget.Widget.dragSourceSetIconPixbuf].

Note that some widgets set up a drag icon in the default handler of this signal, so you may have to use g_signal_connect_after() to override what the default handler did.

Parameters

`callback`	signal callback delegate or function to connect `void callback(gdk.drag_context.DragContext context, gtk.widget.Widget widget)` `context` the drag context (optional) `widget` 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