[glom/gtkmm4v3: 9/21] gtk4: eggspreadtablednd.c: Replace gdk_window_new().

[Murray Cumming <murrayc src gnome org>]

commit 9abbf6a453fb862d619ad147445df5281fa17078
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Dec 18 12:07:47 2016 +0100

    gtk4: eggspreadtablednd.c: Replace gdk_window_new().

 .../eggspreadtable/eggspreadtablednd.c             |   18 ++++--------------
 1 files changed, 4 insertions(+), 14 deletions(-)
---
diff --git a/glom/utility_widgets/eggspreadtable/eggspreadtablednd.c 
b/glom/utility_widgets/eggspreadtable/eggspreadtablednd.c
index 5704f64..d3e8495 100644
--- a/glom/utility_widgets/eggspreadtable/eggspreadtablednd.c
+++ b/glom/utility_widgets/eggspreadtable/eggspreadtablednd.c
@@ -367,30 +367,20 @@ egg_spread_table_dnd_realize (GtkWidget *widget)
 {
   GtkAllocation allocation;
   GdkWindow *window;
-  GdkWindowAttr attributes;
-  gint attributes_mask;
 
   gtk_widget_set_realized (widget, TRUE);
 
   gtk_widget_get_allocation (widget, &allocation);
 
-  attributes.window_type = GDK_WINDOW_CHILD;
-  attributes.x = allocation.x;
-  attributes.y = allocation.y;
-  attributes.width = allocation.width;
-  attributes.height = allocation.height;
-  attributes.wclass = GDK_INPUT_OUTPUT;
-  attributes.visual = gtk_widget_get_visual (widget);
-  attributes.event_mask = gtk_widget_get_events (widget)
+  gint event_mask = gtk_widget_get_events (widget)
                          | GDK_VISIBILITY_NOTIFY_MASK | GDK_EXPOSURE_MASK
                          | GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK
                          | GDK_POINTER_MOTION_MASK | GDK_LEAVE_NOTIFY_MASK;
-  attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL;
 
-  window = gdk_window_new (gtk_widget_get_parent_window (widget),
-                           &attributes, attributes_mask);
+  window = gdk_window_new_child (gtk_widget_get_parent_window (widget),
+                           event_mask, &allocation);
   gtk_widget_set_window (widget, window);
-  gdk_window_set_user_data (window, widget); 
+  gdk_window_set_user_data (window, widget);
 }
 
 static gboolean