Need to set the MICROSOFT_TABLETPENSERVICE_PROPERTY window property even for child windows

base/win/win_util.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 "base/win/win_util.h"
 
 #include <aclapi.h>
 #include <cfgmgr32.h>
 #include <lm.h>
 #include <powrprof.h>
+#include <tchar.h>

[ananta, 2016/04/04 21:17:59]

Please fix the include order if possible for this file

[kylix_rd, 2016/04/04 21:40:51]

Done.

+#include <tpcshrd.h>
 #include <shellapi.h>
 #include <shlobj.h>
 #include <shobjidl.h>  // Must be before propkey.
 #include <initguid.h>
 #include <inspectable.h>
 #include <propkey.h>
 #include <propvarutil.h>
 #include <psapi.h>
 #include <roapi.h>
 #include <sddl.h>
@@ skipping 666 matching lines @@
       // more room is given to avoid multiple expensive calls to
       // ::EnumProcessModules() just because one module has been added.
       snapshot->resize(num_modules + 8, NULL);
     }
   } while (--retries_remaining);
 
   DLOG(ERROR) << "Failed to enumerate modules.";
   return false;
 }
 
+// Disable/Enable flick gestures
+void AllowFlicks(HWND hwnd, bool allow) {
+  if (allow) {
+    ::RemoveProp(hwnd, MICROSOFT_TABLETPENSERVICE_PROPERTY);
+  } else {
+    ::SetProp(hwnd, MICROSOFT_TABLETPENSERVICE_PROPERTY,
+        reinterpret_cast<HANDLE>(TABLET_DISABLE_FLICKS |
+            TABLET_DISABLE_FLICKFALLBACKKEYS));
+  }
+}
+
 }  // namespace win
 }  // namespace base