Custom frame UI for platform apps on Windows.

chrome/browser/ui/views/tab_contents/native_tab_contents_view_win.cc

 // Copyright (c) 2012 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.
 
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_win.h"
 
 #include "chrome/browser/tab_contents/web_drop_target_win.h"
 #include "chrome/browser/ui/views/tab_contents/native_tab_contents_view_delegate.h"
 #include "chrome/browser/ui/views/tab_contents/tab_contents_drag_win.h"
 #include "content/public/browser/render_widget_host_view.h"
@@ skipping 265 matching lines @@
   // to receive scroll messages from ThinkPad touch-pad driver. Suppress
   // painting of scrollbars by returning 0 size for them.
   return 0;
 }
 
 void NativeTabContentsViewWin::OnNCPaint(HRGN rgn) {
   // Suppress default WM_NCPAINT handling. We don't need to do anything
   // here since the view will draw everything correctly.
 }
 
+LRESULT NativeTabContentsViewWin::OnNCHitTest(const CPoint& point) {
+  // Allow hit tests to fall through to the parent window.
+  SetMsgHandled(true);
+  return HTTRANSPARENT;
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsViewWin, private:
 
 void NativeTabContentsViewWin::ScrollCommon(UINT message, int scroll_type,
                                             short position, HWND scrollbar) {
   // This window can receive scroll events as a result of the ThinkPad's
   // touch-pad scroll wheel emulation.
   if (!ScrollZoom(scroll_type)) {
     // Reflect scroll message to the view() to give it a chance
     // to process scrolling.
@@ skipping 35 matching lines @@
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // NativeTabContentsView, public:
 
 // static
 NativeTabContentsView* NativeTabContentsView::CreateNativeTabContentsView(
     internal::NativeTabContentsViewDelegate* delegate) {
   return new NativeTabContentsViewWin(delegate);
 }