drag_data_received (
  GtkWidget* self,
  GdkDragContext* context,
  gint x,
  gint y,
  GtkSelectionData* data,
  guint info,
  guint time,
  gpointer user_data

Description [src]

The ::drag-data-received signal is emitted on the drop site when the dragged data has been received. If the data was received in order to determine whether the drop will be accepted, the handler is expected to call gdk_drag_status() and not finish the drag. If the data was received in response to a GtkWidget::drag-drop signal (and this is the last target to be received), the handler for this signal is expected to process the received data and then call gtk_drag_finish(), setting the success parameter depending on whether the data was processed successfully.

Applications must create some means to determine why the signal was emitted and therefore whether to call gdk_drag_status() or gtk_drag_finish().

The handler may inspect the selected action with gdk_drag_context_get_selected_action() before calling gtk_drag_finish(), e.g. to implement GDK_ACTION_ASK as shown in the following example:

drag_data_received (GtkWidget          *widget,
                    GdkDragContext     *context,
                    gint                x,
                    gint                y,
                    GtkSelectionData   *data,
                    guint               info,
                    guint               time)
  if ((data->length >= 0) && (data->format == 8))
      GdkDragAction action;

      // handle data here

      action = gdk_drag_context_get_selected_action (context);
      if (action == GDK_ACTION_ASK)
          GtkWidget *dialog;
          gint response;

          dialog = gtk_message_dialog_new (NULL,
                                           GTK_DIALOG_MODAL |
                                           "Move the data ?\n");
          response = gtk_dialog_run (GTK_DIALOG (dialog));
          gtk_widget_destroy (dialog);

          if (response == GTK_RESPONSE_YES)
            action = GDK_ACTION_MOVE;
            action = GDK_ACTION_COPY;

      gtk_drag_finish (context, TRUE, action == GDK_ACTION_MOVE, time);
    gtk_drag_finish (context, FALSE, FALSE, time);
Default handler:

The default handler is called after the handlers added via g_signal_connect().


context GdkDragContext

The drag context.

 The data is owned by the caller of the function.
x gint

Where the drop happened.

y gint

Where the drop happened.

data GtkSelectionData

The received data.

 The data is owned by the caller of the function.
info guint

The info that has been registered with the target in the GtkTargetList.

time guint

The timestamp at which the data was received.