Use the convenience function gdk_screen_get_window_stack to enumerate top-lev...

chrome/common/gtk_util.h

 // Copyright (c) 2009 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_COMMON_GTK_UTIL_H_
 #define CHROME_COMMON_GTK_UTIL_H_
 
 #include <gtk/gtk.h>
 #include <string>
 
 #include "base/gfx/point.h"
 #include "base/gfx/rect.h"
+#include "chrome/common/x11_util.h"
 #include "webkit/glue/window_open_disposition.h"
 
 typedef struct _GtkWidget GtkWidget;
 
 namespace event_utils {
 
 // Translates event flags into what kind of disposition they represent.
 // For example, a middle click would mean to open a background tab.
 // event_flags are the state in the GdkEvent structure.
 WindowOpenDisposition DispositionFromEventFlags(guint state);
@@ skipping 49 matching lines @@
 void CenterWidgetInHBox(GtkWidget* hbox, GtkWidget* widget, bool pack_at_end,
                         int padding);
 
 // Change windows accelerator style to GTK style. (GTK uses _ for
 // accelerators.  Windows uses & with && as an escape for &.)
 std::string ConvertAcceleratorsFromWindowsStyle(const std::string& label);
 
 // Returns true if the screen is composited, false otherwise.
 bool IsScreenComposited();
 
+// Implementers of this interface receive a notification for every top-level
+// gdk window of the current display.
+class EnumerateWindowsDelegate {
+ public:
+  // |xid| is the X Window ID of the enumerated window.  Return true to stop
+  // further iteration.
+  virtual bool ShouldStopIterating(XID xid) = 0;
+};
+
+// Enumerates the top-level gdk windows of the current display.
+void EnumerateChildWindows(EnumerateWindowsDelegate* delegate);
+
 }  // namespace gtk_util
 
 #endif  // CHROME_COMMON_GTK_UTIL_H_