ui/base/touch/touch_device_win.cc

   1 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "ui/base/touch/touch_device.h"
   6 #include "base/win/windows_version.h"
   7 #include <windows.h>
   8
   9 namespace ui {
  10
  11 bool IsTouchDevicePresent() {
  12   int value = GetSystemMetrics(SM_DIGITIZER);
  13   return (value & NID_READY) &&
  14       ((value & NID_INTEGRATED_TOUCH) || (value & NID_EXTERNAL_TOUCH));
  15 }
  16
  17 int MaxTouchPoints() {
  18   return GetSystemMetrics(SM_MAXIMUMTOUCHES);
  19 }
  20
  21 }  // namespace ui