зеркало из https://github.com/mozilla/gecko-dev.git
34 строки
1.2 KiB
C++
34 строки
1.2 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "GetKnownFolderPath.h"
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namespace mozilla {
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UniquePtr<wchar_t, LoadedCoTaskMemFreeDeleter> GetKnownFolderPath(
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REFKNOWNFOLDERID folderId) {
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static decltype(SHGetKnownFolderPath)* shGetKnownFolderPath = nullptr;
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if (!shGetKnownFolderPath) {
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// We could go out of our way to `FreeLibrary` on this, decrementing its
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// ref count and potentially unloading it. However doing so would be either
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// effectively a no-op, or counterproductive. Just let it get cleaned up
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// when the process is terminated, because we're going to load it anyway
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// elsewhere.
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HMODULE shell32Dll = ::LoadLibraryW(L"shell32");
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if (!shell32Dll) {
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return nullptr;
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}
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shGetKnownFolderPath = reinterpret_cast<decltype(shGetKnownFolderPath)>(
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::GetProcAddress(shell32Dll, "SHGetKnownFolderPath"));
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if (!shGetKnownFolderPath) {
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return nullptr;
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}
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}
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PWSTR path = nullptr;
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shGetKnownFolderPath(folderId, 0, nullptr, &path);
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return UniquePtr<wchar_t, LoadedCoTaskMemFreeDeleter>(path);
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}
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} // namespace mozilla
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