forked from AuroraMiddleware/gtk
030b62d122
When trying to drag, we currently the position of the first motion event to determine where the drag came from. This might be alright in the case of the old animation, but the data will be inaccurate if the user has moved the pointer quite a bit since pressing the cursor to start dragging. While we could monkey patch the GdkEvent at the widget layer, this is unintuitive and strange. Add a new API that takes a set of pointer coordinates describing the origin of the drag. Additionally, adapt most widgets to use it and use it with correct coordinates. https://bugzilla.gnome.org/show_bug.cgi?id=705605
256 lines
9.3 KiB
C
256 lines
9.3 KiB
C
/* -*- Mode: C; c-file-style: "gnu"; tab-width: 8 -*- */
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/* GTK - The GIMP Toolkit
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* Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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/*
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* Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
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* file for a list of people on the GTK+ Team. See the ChangeLog
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* files for a list of changes. These files are distributed with
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* GTK+ at ftp://ftp.gtk.org/pub/gtk/.
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*/
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#ifndef __GTK_DND_H__
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#define __GTK_DND_H__
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#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
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#error "Only <gtk/gtk.h> can be included directly."
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#endif
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#include <gtk/gtkwidget.h>
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#include <gtk/gtkselection.h>
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G_BEGIN_DECLS
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/**
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* GtkDestDefaults:
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* @GTK_DEST_DEFAULT_MOTION: If set for a widget, GTK+, during a drag over this
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* widget will check if the drag matches this widget's list of possible targets
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* and actions.
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* GTK+ will then call gdk_drag_status() as appropriate.
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* @GTK_DEST_DEFAULT_HIGHLIGHT: If set for a widget, GTK+ will draw a highlight on
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* this widget as long as a drag is over this widget and the widget drag format
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* and action are acceptable.
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* @GTK_DEST_DEFAULT_DROP: If set for a widget, when a drop occurs, GTK+ will
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* will check if the drag matches this widget's list of possible targets and
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* actions. If so, GTK+ will call gtk_drag_get_data() on behalf of the widget.
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* Whether or not the drop is successful, GTK+ will call gtk_drag_finish(). If
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* the action was a move, then if the drag was successful, then %TRUE will be
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* passed for the @delete parameter to gtk_drag_finish().
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* @GTK_DEST_DEFAULT_ALL: If set, specifies that all default actions should
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* be taken.
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*
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* The #GtkDestDefaults enumeration specifies the various
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* types of action that will be taken on behalf
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* of the user for a drag destination site.
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*/
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typedef enum {
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GTK_DEST_DEFAULT_MOTION = 1 << 0, /* respond to "drag_motion" */
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GTK_DEST_DEFAULT_HIGHLIGHT = 1 << 1, /* auto-highlight */
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GTK_DEST_DEFAULT_DROP = 1 << 2, /* respond to "drag_drop" */
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GTK_DEST_DEFAULT_ALL = 0x07
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} GtkDestDefaults;
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/**
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* GtkTargetFlags:
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* @GTK_TARGET_SAME_APP: If this is set, the target will only be selected
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* for drags within a single application.
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* @GTK_TARGET_SAME_WIDGET: If this is set, the target will only be selected
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* for drags within a single widget.
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* @GTK_TARGET_OTHER_APP: If this is set, the target will not be selected
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* for drags within a single application.
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* @GTK_TARGET_OTHER_WIDGET: If this is set, the target will not be selected
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* for drags withing a single widget.
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*
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* The #GtkTargetFlags enumeration is used to specify
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* constraints on an entry in a #GtkTargetTable.
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*/
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typedef enum {
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GTK_TARGET_SAME_APP = 1 << 0, /*< nick=same-app >*/
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GTK_TARGET_SAME_WIDGET = 1 << 1, /*< nick=same-widget >*/
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GTK_TARGET_OTHER_APP = 1 << 2, /*< nick=other-app >*/
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GTK_TARGET_OTHER_WIDGET = 1 << 3 /*< nick=other-widget >*/
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} GtkTargetFlags;
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/* Destination side */
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_get_data (GtkWidget *widget,
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GdkDragContext *context,
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GdkAtom target,
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guint32 time_);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_finish (GdkDragContext *context,
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gboolean success,
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gboolean del,
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guint32 time_);
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GDK_AVAILABLE_IN_ALL
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GtkWidget *gtk_drag_get_source_widget (GdkDragContext *context);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_highlight (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_unhighlight (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_set (GtkWidget *widget,
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GtkDestDefaults flags,
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const GtkTargetEntry *targets,
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gint n_targets,
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GdkDragAction actions);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_set_proxy (GtkWidget *widget,
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GdkWindow *proxy_window,
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GdkDragProtocol protocol,
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gboolean use_coordinates);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_unset (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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GdkAtom gtk_drag_dest_find_target (GtkWidget *widget,
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GdkDragContext *context,
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GtkTargetList *target_list);
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GDK_AVAILABLE_IN_ALL
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GtkTargetList* gtk_drag_dest_get_target_list (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_set_target_list (GtkWidget *widget,
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GtkTargetList *target_list);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_add_text_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_add_image_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_add_uri_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_dest_set_track_motion (GtkWidget *widget,
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gboolean track_motion);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_drag_dest_get_track_motion (GtkWidget *widget);
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/* Source side */
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_set (GtkWidget *widget,
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GdkModifierType start_button_mask,
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const GtkTargetEntry *targets,
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gint n_targets,
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GdkDragAction actions);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_unset (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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GtkTargetList* gtk_drag_source_get_target_list (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_set_target_list (GtkWidget *widget,
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GtkTargetList *target_list);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_add_text_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_add_image_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_add_uri_targets (GtkWidget *widget);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_set_icon_pixbuf (GtkWidget *widget,
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GdkPixbuf *pixbuf);
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GDK_DEPRECATED_IN_3_10_FOR(gtk_drag_source_set_icon_name)
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void gtk_drag_source_set_icon_stock (GtkWidget *widget,
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const gchar *stock_id);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_source_set_icon_name (GtkWidget *widget,
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const gchar *icon_name);
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GDK_AVAILABLE_IN_3_2
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void gtk_drag_source_set_icon_gicon (GtkWidget *widget,
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GIcon *icon);
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/* There probably should be functions for setting the targets
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* as a GtkTargetList
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*/
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GDK_AVAILABLE_IN_3_10
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GdkDragContext *gtk_drag_begin_with_coordinates (GtkWidget *widget,
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GtkTargetList *targets,
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GdkDragAction actions,
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gint button,
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GdkEvent *event,
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gint x,
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gint y);
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GDK_DEPRECATED_IN_3_10_FOR(gtk_drag_begin_with_coordinates)
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GdkDragContext *gtk_drag_begin (GtkWidget *widget,
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GtkTargetList *targets,
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GdkDragAction actions,
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gint button,
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GdkEvent *event);
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/* Set the image being dragged around
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*/
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_set_icon_widget (GdkDragContext *context,
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GtkWidget *widget,
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gint hot_x,
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gint hot_y);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_set_icon_pixbuf (GdkDragContext *context,
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GdkPixbuf *pixbuf,
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gint hot_x,
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gint hot_y);
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GDK_DEPRECATED_IN_3_10_FOR(gtk_drag_set_icon_name)
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void gtk_drag_set_icon_stock (GdkDragContext *context,
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const gchar *stock_id,
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gint hot_x,
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gint hot_y);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_set_icon_surface(GdkDragContext *context,
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cairo_surface_t *surface);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_set_icon_name (GdkDragContext *context,
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const gchar *icon_name,
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gint hot_x,
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gint hot_y);
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GDK_AVAILABLE_IN_3_2
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void gtk_drag_set_icon_gicon (GdkDragContext *context,
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GIcon *icon,
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gint hot_x,
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gint hot_y);
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GDK_AVAILABLE_IN_ALL
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void gtk_drag_set_icon_default (GdkDragContext *context);
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GDK_AVAILABLE_IN_ALL
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gboolean gtk_drag_check_threshold (GtkWidget *widget,
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gint start_x,
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gint start_y,
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gint current_x,
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gint current_y);
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/* Internal functions */
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void _gtk_drag_source_handle_event (GtkWidget *widget,
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GdkEvent *event);
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void _gtk_drag_dest_handle_event (GtkWidget *toplevel,
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GdkEvent *event);
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G_END_DECLS
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#endif /* __GTK_DND_H__ */
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