Supports High DPI mode....

app/win_util.cc

 // 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.
 
 #include "app/win_util.h"
 
 #include <commdlg.h>
 #include <dwmapi.h>
 #include <shellapi.h>
 #include <shlobj.h>
 
 #include <algorithm>
 
 #include "app/l10n_util.h"
 #include "app/l10n_util_win.h"
 #include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/file_util.h"
 #include "base/i18n/rtl.h"
 #include "base/logging.h"
 #include "base/native_library.h"
 #include "base/registry.h"
 #include "base/scoped_comptr_win.h"
 #include "base/scoped_handle.h"
 #include "base/scoped_handle_win.h"
+#include "base/scoped_native_library.h"
 #include "base/string_util.h"
 #include "base/win_util.h"
 #include "gfx/codec/png_codec.h"
 #include "gfx/gdi_util.h"
 
 // Ensure that we pick up this link library.
 #pragma comment(lib, "dwmapi.lib")
 
 namespace win_util {
 
@@ skipping 539 matching lines @@
   HRESULT result = SHGetPropertyStoreForWindow(
       hwnd, __uuidof(*pps), reinterpret_cast<void**>(pps.Receive()));
   if (S_OK == result) {
     SetAppIdForPropertyStore(pps, app_id.c_str());
   }
 
   // Cleanup.
   base::UnloadNativeLibrary(shell32_library);
 }
 
+void CallSetProcessDPIAware() {
+  // This functionality is only available on Vista or later.
+  if (win_util::GetWinVersion() < win_util::WINVERSION_VISTA)
+    return;
+
+  base::ScopedNativeLibrary user32(
+      FilePath(base::GetNativeLibraryName(L"user32")));
+  typedef BOOL (*SetProcessDPIAwareFunc)();
+  SetProcessDPIAwareFunc set_process_dpi_aware =
+      (SetProcessDPIAwareFunc)user32.GetFunctionPointer("SetProcessDPIAware");
+  if (set_process_dpi_aware)
+    set_process_dpi_aware();
+}
+
 }  // namespace win_util