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[C++] 特殊フォルダのパスを取得する

Last updated at Posted at 2020-11-25

もくじ
https://qiita.com/tera1707/items/4fda73d86eded283ec4f

やりたいこと

C++のプログラムで「デスクトップ」とか、「Program Files」とかのパスを取得したい。

SHGetKnownFolderPath

SHGetKnownFolderPath()で特殊パスを取得する。

#include <shlobj.h>
#include <iostream>

int main()
{
    WCHAR* path = nullptr;

    auto hr = SHGetKnownFolderPath(FOLDERID_Desktop, KF_FLAG_DEFAULT, NULL, &path);

    if (SUCCEEDED(hr)) {
        std::wcout << path << std::endl;
    }

    CoTaskMemFree(path);
}

取得できるフォルダは、下記を参照

出力

C:\Users\username\Desktop

SHGetSpecialFolderPath(非推奨)

SHGetSpecialFolderPath()関数を使って実現はできるが、現在(2024/01時点)は非推奨らしい。

#include <windows.h>
#include <stdio.h>
#include <iostream>
#include <tchar.h>
#include <iostream>
#include <string>
#include <shlobj.h>// SHGetSpecialFolderPathに必要

int main()
{
    TCHAR waFolderPath[MAX_PATH];

    // CSIDL_DESKTOPのところを変えると、いろんなフォルダが取れる
    SHGetSpecialFolderPath(NULL, waFolderPath, CSIDL_DESKTOP, 0);
    std::wcout << TEXT("CSIDL_DESKTOP                 : ") << waFolderPath << std::endl;

    system("pause");
}

CSIDL_DESKTOPの部分を何に変えるか、は、下記を参照。
https://docs.microsoft.com/en-us/windows/win32/shell/csidl

参考

SHGetKnownFolderPath 関数 (shlobj_core.h)

KNOWNFOLDERID

Windowsの特殊フォルダのパスを取得する
https://www.wabiapp.com/WabiSampleSource/windows/sh_get_special_folder_path.html

SHGetSpecialFolderPathに設定できるCSIDL
http://yamatyuu.net/computer/program/sdk/base/SHGetSpecialFolderPath/csidl.html

CSIDL(MSDocs)
https://docs.microsoft.com/en-us/windows/win32/shell/csidl

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