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)
Yes.After to execute callback after default handler, No.After to execute before (default)
Signal ID
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.