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dragdest: Make gtk_drop_target_new() args be transfer full

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Saves tons of code.
This commit is contained in:
Benjamin Otte 2020-02-16 19:52:17 +01:00
parent 91d91a29e8
commit 80ba7fd682
22 changed files with 41 additions and 88 deletions
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9
demos/gtk-demo/clipboard.c
View File

@ -273,7 +273,6 @@ do_clipboard (GtkWidget *do_widget)
GActionGroup *actions;
GtkDragSource *source;
GtkDropTarget *dest;
GdkContentFormats *formats;
window = gtk_window_new ();
gtk_window_set_display (GTK_WINDOW (window),
@ -342,9 +341,7 @@ do_clipboard (GtkWidget *do_widget)
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (source));
/* accept drops on image */
formats = gdk_content_formats_new_for_gtype (GDK_TYPE_TEXTURE);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GDK_TYPE_TEXTURE), GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop), image);
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (dest));
@ -373,9 +370,7 @@ do_clipboard (GtkWidget *do_widget)
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (source));
/* accept drops on image */
formats = gdk_content_formats_new_for_gtype (GDK_TYPE_TEXTURE);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GDK_TYPE_TEXTURE), GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop), image);
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (dest));

6
gtk/gtkcalendar.c
View File

@ -536,7 +536,6 @@ gtk_calendar_init (GtkCalendar *calendar)
#else
gchar *week_start;
#endif
GdkContentFormats *formats;
GtkDropTarget *dest;
int min_year_width;
GDateTime *now;
@ -718,9 +717,8 @@ gtk_calendar_init (GtkCalendar *calendar)
priv->in_drag = 0;
formats = gdk_content_formats_new_for_gtype (G_TYPE_STRING);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (G_TYPE_STRING),
GDK_ACTION_COPY);
g_signal_connect (dest, "accept", G_CALLBACK (gtk_calendar_drag_accept), calendar);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_calendar_drag_leave), calendar);

6
gtk/gtkcolorbutton.c
View File

@ -295,7 +295,6 @@ gtk_color_button_init (GtkColorButton *button)
GtkColorButtonPrivate *priv = gtk_color_button_get_instance_private (button);
PangoLayout *layout;
PangoRectangle rect;
GdkContentFormats *formats;
GtkDragSource *source;
GtkDropTarget *dest;
@ -321,11 +320,10 @@ gtk_color_button_init (GtkColorButton *button)
priv->rgba.alpha = 1;
priv->use_alpha = FALSE;
formats = gdk_content_formats_new_for_gtype (GDK_TYPE_RGBA);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GDK_TYPE_RGBA),
GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_color_button_drag_drop), button);
gtk_widget_add_controller (GTK_WIDGET (button), GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (formats);
source = gtk_drag_source_new ();
g_signal_connect (source, "prepare", G_CALLBACK (gtk_color_button_drag_prepare), button);

6
gtk/gtkcolorswatch.c
View File

@ -661,10 +661,8 @@ gtk_color_swatch_set_can_drop (GtkColorSwatch *swatch,
if (can_drop && !priv->dest)
{
GdkContentFormats *formats;
formats = gdk_content_formats_new_for_gtype (GDK_TYPE_RGBA);
priv->dest = gtk_drop_target_new (formats, GDK_ACTION_COPY);
priv->dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GDK_TYPE_RGBA),
GDK_ACTION_COPY);
g_signal_connect (priv->dest, "drag-drop", G_CALLBACK (swatch_drag_drop), swatch);
gtk_widget_add_controller (GTK_WIDGET (swatch), GTK_EVENT_CONTROLLER (priv->dest));
}

16
gtk/gtkdragdest.c
View File

@ -392,7 +392,7 @@ gtk_drop_target_class_init (GtkDropTargetClass *class)
/**
* gtk_drop_target_new:
* @formats: (nullable): the supported data formats
* @formats: (nullable) (transfer full): the supported data formats
* @actions: the supported actions
*
* Creates a new #GtkDropTarget object.
@ -403,10 +403,16 @@ GtkDropTarget *
gtk_drop_target_new (GdkContentFormats *formats,
GdkDragAction actions)
{
return g_object_new (GTK_TYPE_DROP_TARGET,
"formats", formats,
"actions", actions,
NULL);
GtkDropTarget *result;
result = g_object_new (GTK_TYPE_DROP_TARGET,
"formats", formats,
"actions", actions,
NULL);
g_clear_pointer (&formats, gdk_content_formats_unref);
return result;
}
/**

5
gtk/gtkexpander.c
View File

@ -348,7 +348,6 @@ gtk_expander_init (GtkExpander *expander)
GtkExpanderPrivate *priv = gtk_expander_get_instance_private (expander);
GtkGesture *gesture;
GtkDropTarget *dest;
GdkContentFormats *formats;
gtk_widget_set_can_focus (GTK_WIDGET (expander), TRUE);
@ -373,9 +372,7 @@ gtk_expander_init (GtkExpander *expander)
gtk_widget_add_css_class (priv->arrow_widget, GTK_STYLE_CLASS_HORIZONTAL);
gtk_container_add (GTK_CONTAINER (priv->title_widget), priv->arrow_widget);
formats = gdk_content_formats_new (NULL, 0);
dest = gtk_drop_target_new (formats, 0);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (NULL, 0);
g_signal_connect (dest, "accept", G_CALLBACK (gtk_expander_drag_accept), expander);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_expander_drag_leave), expander);
gtk_widget_add_controller (GTK_WIDGET (expander), GTK_EVENT_CONTROLLER (dest));

6
gtk/gtkfilechooserbutton.c
View File

@ -446,7 +446,6 @@ gtk_file_chooser_button_init (GtkFileChooserButton *button)
GtkWidget *box;
GtkWidget *icon;
GdkContentFormatsBuilder *builder;
GdkContentFormats *target_list;
GtkDropTarget *dest;
priv->button = gtk_button_new ();
@ -502,11 +501,10 @@ gtk_file_chooser_button_init (GtkFileChooserButton *button)
builder = gdk_content_formats_builder_new ();
gdk_content_formats_builder_add_gtype (builder, G_TYPE_STRING);
gdk_content_formats_builder_add_gtype (builder, GDK_TYPE_FILE_LIST);
target_list = gdk_content_formats_builder_free_to_formats (builder);
dest = gtk_drop_target_new (target_list, GDK_ACTION_COPY);
dest = gtk_drop_target_new (gdk_content_formats_builder_free_to_formats (builder),
GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_file_chooser_button_drag_drop), button);
gtk_widget_add_controller (GTK_WIDGET (button), GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (target_list);
}

8
gtk/gtkfilechooserwidget.c
View File

@ -8362,24 +8362,22 @@ post_process_ui (GtkFileChooserWidget *impl)
GList *cells;
GFile *file;
GtkDropTarget *dest;
GdkContentFormats *formats;
/* Setup file list treeview */
selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->browse_files_tree_view));
gtk_tree_selection_set_select_function (selection,
list_select_func,
impl, NULL);
formats = gdk_content_formats_new_for_gtype (GDK_TYPE_FILE_LIST);
gtk_tree_view_enable_model_drag_source (GTK_TREE_VIEW (priv->browse_files_tree_view),
GDK_BUTTON1_MASK,
formats,
gdk_content_formats_new_for_gtype (GDK_TYPE_FILE_LIST),
GDK_ACTION_COPY | GDK_ACTION_MOVE);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY | GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GDK_TYPE_FILE_LIST),
GDK_ACTION_COPY | GDK_ACTION_MOVE);
g_signal_connect (dest, "accept", G_CALLBACK (file_list_drag_accept_cb), impl);
g_signal_connect (dest, "drag-drop", G_CALLBACK (file_list_drag_drop_cb), impl);
gtk_widget_add_controller (priv->browse_files_tree_view, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (formats);
/* File browser treemodel columns are shared between GtkFileChooser implementations,
* so we don't set cell renderer attributes in GtkBuilder, but rather keep that

2
gtk/gtkiconview.c
View File

@ -6453,7 +6453,7 @@ gtk_icon_view_enable_model_drag_dest (GtkIconView *icon_view,
g_return_val_if_fail (GTK_IS_ICON_VIEW (icon_view), NULL);
GtkCssNode *widget_node;
icon_view->priv->dest = gtk_drop_target_new (formats, actions);
icon_view->priv->dest = gtk_drop_target_new (gdk_content_formats_ref (formats), actions);
g_signal_connect (icon_view->priv->dest, "drag-leave", G_CALLBACK (gtk_icon_view_drag_leave), icon_view);
g_signal_connect (icon_view->priv->dest, "drag-motion", G_CALLBACK (gtk_icon_view_drag_motion), icon_view);
g_signal_connect (icon_view->priv->dest, "drag-drop", G_CALLBACK (gtk_icon_view_drag_drop), icon_view);

5
gtk/gtknotebook.c
View File

@ -1292,7 +1292,6 @@ static void
gtk_notebook_init (GtkNotebook *notebook)
{
GtkNotebookPrivate *priv;
GdkContentFormats *targets;
GtkEventController *controller;
GtkGesture *gesture;
GtkLayoutManager *layout;
@ -1348,13 +1347,11 @@ gtk_notebook_init (GtkNotebook *notebook)
gtk_widget_set_vexpand (priv->stack_widget, TRUE);
gtk_widget_set_parent (priv->stack_widget, GTK_WIDGET (notebook));
targets = gdk_content_formats_new (dst_notebook_targets, G_N_ELEMENTS (dst_notebook_targets));
dest = gtk_drop_target_new (targets, GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new (dst_notebook_targets, G_N_ELEMENTS (dst_notebook_targets)), GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-motion", G_CALLBACK (gtk_notebook_drag_motion), NULL);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_notebook_drag_leave), NULL);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_notebook_drag_drop), NULL);
gtk_widget_add_controller (GTK_WIDGET (priv->tabs_widget), GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
gesture = gtk_gesture_click_new ();
gtk_gesture_single_set_button (GTK_GESTURE_SINGLE (gesture), 0);

6
gtk/gtkplacessidebar.c
View File

@ -4018,7 +4018,6 @@ shell_shows_desktop_changed (GtkSettings *settings,
static void
gtk_places_sidebar_init (GtkPlacesSidebar *sidebar)
{
GdkContentFormats *formats;
GtkDropTarget *dest;
gboolean show_desktop;
GtkEventController *controller;
@ -4082,9 +4081,8 @@ gtk_places_sidebar_init (GtkPlacesSidebar *sidebar)
builder = gdk_content_formats_builder_new ();
gdk_content_formats_builder_add_mime_type (builder, "DND_GTK_SIDEBAR_ROW");
gdk_content_formats_builder_add_gtype (builder, GDK_TYPE_FILE_LIST);
formats = gdk_content_formats_builder_free_to_formats (builder);
dest = gtk_drop_target_new (formats, GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (gdk_content_formats_builder_free_to_formats (builder),
GDK_ACTION_MOVE | GDK_ACTION_COPY | GDK_ACTION_LINK);
g_signal_connect (dest, "drag-motion", G_CALLBACK (drag_motion_callback), sidebar);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop_callback), sidebar);
g_signal_connect (dest, "drag-leave", G_CALLBACK (drag_leave_callback), sidebar);

5
gtk/gtkstackswitcher.c
View File

@ -113,16 +113,13 @@ static void
gtk_stack_switcher_init (GtkStackSwitcher *switcher)
{
GtkStackSwitcherPrivate *priv = gtk_stack_switcher_get_instance_private (switcher);
GdkContentFormats *formats;
GtkDropTarget *dest;
priv->buttons = g_hash_table_new_full (g_direct_hash, g_direct_equal, g_object_unref, NULL);
gtk_widget_add_css_class (GTK_WIDGET (switcher), "linked");
formats = gdk_content_formats_new (NULL, 0);
dest = gtk_drop_target_new (formats, 0);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (NULL, 0);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_stack_switcher_drag_leave), switcher);
g_signal_connect (dest, "accept", G_CALLBACK (gtk_stack_switcher_drag_accept), switcher);
g_signal_connect (dest, "drag-motion", G_CALLBACK (gtk_stack_switcher_drag_motion), switcher);

6
gtk/gtktext.c
View File

@ -1712,7 +1712,6 @@ gtk_text_init (GtkText *self)
GtkEventController *controller;
int i;
GtkDropTarget *dest;
GdkContentFormats *formats;
gtk_widget_set_can_focus (GTK_WIDGET (self), TRUE);
gtk_widget_set_overflow (GTK_WIDGET (self), GTK_OVERFLOW_HIDDEN);
@ -1734,13 +1733,12 @@ gtk_text_init (GtkText *self)
priv->selection_content = g_object_new (GTK_TYPE_TEXT_CONTENT, NULL);
GTK_TEXT_CONTENT (priv->selection_content)->self = self;
formats = gdk_content_formats_new_for_gtype (G_TYPE_STRING);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY | GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (G_TYPE_STRING),
GDK_ACTION_COPY | GDK_ACTION_MOVE);
g_signal_connect (dest, "accept", G_CALLBACK (gtk_text_drag_accept), self);
g_signal_connect (dest, "drag-motion", G_CALLBACK (gtk_text_drag_motion), self);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_text_drag_leave), self);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_text_drag_drop), self);
gdk_content_formats_unref (formats);
gtk_widget_add_controller (GTK_WIDGET (self), GTK_EVENT_CONTROLLER (dest));
/* This object is completely private. No external entity can gain a reference

5
gtk/gtktextview.c
View File

@ -1611,7 +1611,6 @@ static void
gtk_text_view_init (GtkTextView *text_view)
{
GtkWidget *widget = GTK_WIDGET (text_view);
GdkContentFormats *formats;
GtkDropTarget *dest;
GtkTextViewPrivate *priv;
GtkEventController *controller;
@ -1640,9 +1639,7 @@ gtk_text_view_init (GtkTextView *text_view)
priv->scroll_after_paste = FALSE;
formats = gdk_content_formats_new_for_gtype (GTK_TYPE_TEXT_BUFFER);
dest = gtk_drop_target_new (formats, GDK_ACTION_COPY | GDK_ACTION_MOVE);
gdk_content_formats_unref (formats);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GTK_TYPE_TEXT_BUFFER), GDK_ACTION_COPY | GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-leave", G_CALLBACK (gtk_text_view_drag_leave), text_view);
g_signal_connect (dest, "drag-motion", G_CALLBACK (gtk_text_view_drag_motion), text_view);
g_signal_connect (dest, "drag-drop", G_CALLBACK (gtk_text_view_drag_drop), text_view);

2
gtk/gtktreeview.c
View File

@ -12907,7 +12907,7 @@ gtk_tree_view_enable_model_drag_dest (GtkTreeView *tree_view,
di = ensure_info (tree_view);
di->dest_set = TRUE;
di->dest = gtk_drop_target_new (formats, actions);
di->dest = gtk_drop_target_new (gdk_content_formats_ref (formats), actions);
g_signal_connect (di->dest, "drag-leave", G_CALLBACK (gtk_tree_view_drag_leave), tree_view);
g_signal_connect (di->dest, "drag-motion", G_CALLBACK (gtk_tree_view_drag_motion), tree_view);
g_signal_connect (di->dest, "drag-drop", G_CALLBACK (gtk_tree_view_drag_drop), tree_view);

5
gtk/gtkwindow.c
View File

@ -1774,7 +1774,6 @@ gtk_window_init (GtkWindow *window)
GdkSeat *seat;
GtkEventController *motion_controller;
#ifdef GDK_WINDOWING_X11
GdkContentFormats *targets;
GtkDropTarget *dest;
#endif
@ -1828,9 +1827,7 @@ gtk_window_init (GtkWindow *window)
priv->scale = gtk_widget_get_scale_factor (widget);
#ifdef GDK_WINDOWING_X11
targets = gdk_content_formats_new (dnd_dest_targets, G_N_ELEMENTS (dnd_dest_targets));
dest = gtk_drop_target_new (targets, GDK_ACTION_MOVE);
gdk_content_formats_unref (targets);
dest = gtk_drop_target_new (gdk_content_formats_new (dnd_dest_targets, G_N_ELEMENTS (dnd_dest_targets)), GDK_ACTION_MOVE);
gtk_widget_add_controller (GTK_WIDGET (window), GTK_EVENT_CONTROLLER (dest));
#endif

8
tests/testdnd.c
View File

@ -631,7 +631,7 @@ main (int argc, char **argv)
label = gtk_label_new ("Drop Here\n");
targets = gdk_content_formats_new (target_table, n_targets - 1); /* no rootwin */
dest = gtk_drop_target_new (targets, GDK_ACTION_COPY | GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_ref (targets), GDK_ACTION_COPY | GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-drop", G_CALLBACK (label_drag_drop), NULL);
gtk_widget_add_controller (label, GTK_EVENT_CONTROLLER (dest));
@ -651,16 +651,12 @@ main (int argc, char **argv)
gtk_widget_set_vexpand (label, TRUE);
gtk_grid_attach (GTK_GRID (grid), label, 1, 1, 1, 1);
gdk_content_formats_unref (targets);
pixmap = gtk_image_new_from_pixbuf (trashcan_closed);
targets = gdk_content_formats_new (NULL, 0);
dest = gtk_drop_target_new (targets, 0);
dest = gtk_drop_target_new (NULL, 0);
g_signal_connect (dest, "drag-leave", G_CALLBACK (target_drag_leave), pixmap);
g_signal_connect (dest, "accept", G_CALLBACK (target_drag_motion), pixmap);
g_signal_connect (dest, "drag-drop", G_CALLBACK (target_drag_drop), pixmap);
gtk_widget_add_controller (pixmap, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
gtk_widget_set_hexpand (pixmap, TRUE);
gtk_widget_set_vexpand (pixmap, TRUE);

2
tests/testdnd2.c
View File

@ -416,8 +416,6 @@ make_image (const gchar *icon_name, int hotspot)
g_signal_connect (dest, "drag-drop", G_CALLBACK (image_drag_drop), image);
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (formats);
return image;
}

5
tests/testdnd3.c
View File

@ -139,7 +139,6 @@ canvas_new (void)
GtkWidget *canvas;
GtkDragSource *source;
GtkDropTarget *dest;
GdkContentFormats *formats;
canvas = gtk_fixed_new ();
gtk_widget_set_hexpand (canvas, TRUE);
@ -154,11 +153,9 @@ canvas_new (void)
g_signal_connect (source, "drag-cancel", G_CALLBACK (drag_cancel), NULL);
gtk_widget_add_controller (canvas, GTK_EVENT_CONTROLLER (source));
formats = gdk_content_formats_new_for_gtype (GTK_TYPE_WIDGET);
dest = gtk_drop_target_new (formats, GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GTK_TYPE_WIDGET), GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop), NULL);
gtk_widget_add_controller (canvas, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (formats);
return canvas;
}

6
tests/testlist3.c
View File

@ -77,7 +77,6 @@ static GtkWidget *
create_row (const gchar *text)
{
GtkWidget *row, *box, *label, *image;
GdkContentFormats *targets;
GtkDragSource *source;
GtkDropTarget *dest;
@ -97,13 +96,10 @@ create_row (const gchar *text)
g_signal_connect (source, "prepare", G_CALLBACK (prepare), row);
gtk_widget_add_controller (image, GTK_EVENT_CONTROLLER (source));
targets = gdk_content_formats_new_for_gtype (GTK_TYPE_LIST_BOX_ROW);
dest = gtk_drop_target_new (targets, GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new_for_gtype (GTK_TYPE_LIST_BOX_ROW), GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop), row);
gtk_widget_add_controller (GTK_WIDGET (row), GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
return row;
}

5
tests/testnotebookdnd.c
View File

@ -293,17 +293,14 @@ create_notebook_with_notebooks (gchar **labels,
static GtkWidget*
create_trash_button (void)
{
GdkContentFormats *targets;
GtkWidget *button;
GtkDropTarget *dest;
button = gtk_button_new_with_mnemonic ("_Delete");
targets = gdk_content_formats_new (button_targets, G_N_ELEMENTS (button_targets));
dest = gtk_drop_target_new (targets, GDK_ACTION_MOVE);
dest = gtk_drop_target_new (gdk_content_formats_new (button_targets, G_N_ELEMENTS (button_targets)), GDK_ACTION_MOVE);
g_signal_connect (dest, "drag-drop", G_CALLBACK (on_button_drag_drop), NULL);
gtk_widget_add_controller (button, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
return button;
}

5
tests/testtreednd.c
View File

@ -121,15 +121,12 @@ static GtkWidget *
get_droptarget (void)
{
GtkWidget *label;
GdkContentFormats *targets;
GtkDropTarget *dest;
label = gtk_label_new ("Drop here");
targets = gdk_content_formats_new (entries, G_N_ELEMENTS (entries));
dest = gtk_drop_target_new (targets, GDK_ACTION_COPY);
dest = gtk_drop_target_new (gdk_content_formats_new (entries, G_N_ELEMENTS (entries)), GDK_ACTION_COPY);
g_signal_connect (dest, "drag-drop", G_CALLBACK (drag_drop), NULL);
gtk_widget_add_controller (label, GTK_EVENT_CONTROLLER (dest));
gdk_content_formats_unref (targets);
return label;
}