Cmd.exe输出Unicode外部命令

Question

我正在尝试从运行cmd.exe命令获取unicode输出。我看到/ U开关仅适用于dir等内置命令，不适用于ipconfig等其他命令。

如果我将计算机的名称更改为中文/俄语/日语，并运行ipconfig / all，它将在控制台中正常显示。但是当我使用CreateProcesssW（）并将输出重定向到管道时，即使在控制台上正确显示了unicode，也无法返回unicode。

#include <Windows.h>
#include <stdio.h>
int main() {
    HANDLE hPipeRead, hPipeWrite;

    SECURITY_ATTRIBUTES saAttr = { sizeof(SECURITY_ATTRIBUTES) };
    saAttr.bInheritHandle = TRUE;
    saAttr.lpSecurityDescriptor = NULL;

    if (!CreatePipe(&hPipeRead, &hPipeWrite, &saAttr, 0))
        return 0;

    STARTUPINFO si = { sizeof(STARTUPINFO) };
    si.dwFlags = STARTF_USESHOWWINDOW | STARTF_USESTDHANDLES;
    si.hStdOutput = hPipeWrite;
    si.hStdError = hPipeWrite;
    si.wShowWindow = SW_HIDE;

    PROCESS_INFORMATION pi = { 0 };

    WCHAR works[] = L"C:\\windows\\system32\\cmd.exe /u /c dir C:\\test";
    WCHAR dont[] = L"cmd.exe /u /c ipconfig";

    BOOL fSuccess = CreateProcessW(NULL, works, NULL, NULL, TRUE, CREATE_NEW_CONSOLE, NULL, NULL, &si, &pi);
    if (!fSuccess) {
        CloseHandle(hPipeWrite);
        CloseHandle(hPipeRead);
        return 0;
    }

    BOOL bProcessEnded = FALSE;
    for (; !bProcessEnded;) {

        bProcessEnded = WaitForSingleObject(pi.hProcess, 50) == WAIT_OBJECT_0;

        while (TRUE) {
            CHAR *buf = NULL;
            DWORD dwRead = 0;
            DWORD dwAvail = 0;

            if (!PeekNamedPipe(hPipeRead, NULL, 0, NULL, &dwAvail, NULL))
                break;

            if (!dwAvail)
                break;
            buf = HeapAlloc(GetProcessHeap(), 0, dwAvail);
            if (buf == NULL) {
                return 0;
            }

            if (!ReadFile(hPipeRead, buf, dwAvail, &dwRead, NULL) || !dwRead)
                break;
            printf("%ls", buf);

        }
    }

    CloseHandle(hPipeWrite);
    CloseHandle(hPipeRead);
    CloseHandle(pi.hProcess);
    CloseHandle(pi.hThread);

    Sleep(10000);
    return 0;
}

我试图弄清楚如何从cmd.exe中运行的所有内容中获取unicode。