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41 lines
1.1 KiB
C++
41 lines
1.1 KiB
C++
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// Copyright 2019 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "base/win/hstring_compare.h"
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#include <winstring.h>
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#include "base/native_library.h"
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#include "base/win/windows_version.h"
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namespace base {
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namespace win {
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HRESULT HStringCompare(HSTRING string1, HSTRING string2, INT32* result) {
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using CompareStringFunc = decltype(&::WindowsCompareStringOrdinal);
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static const auto compare_string_func = []() -> CompareStringFunc {
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if (GetVersion() < Version::WIN8)
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return nullptr;
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NativeLibraryLoadError load_error;
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NativeLibrary combase_module =
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PinSystemLibrary(FILE_PATH_LITERAL("combase.dll"), &load_error);
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if (load_error.code)
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return nullptr;
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return reinterpret_cast<CompareStringFunc>(
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GetFunctionPointerFromNativeLibrary(combase_module,
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"WindowsCompareStringOrdinal"));
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}();
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if (!compare_string_func)
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return E_FAIL;
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return compare_string_func(string1, string2, result);
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}
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} // namespace win
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} // namespace base
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