如何从Windows线程函数返回char *

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <windows.h>

DWORD WINAPI MyThreadFunction(LPVOID lpParam)
{
    char* result = (char*)malloc(sizeof(char) * 10); // 分配内存
    strcpy(result, "Hello"); // 复制数据
    return (DWORD)result; // 返回内存指针
}

int main()
{
    HANDLE hThread;
    DWORD dwThreadId;

    hThread = CreateThread(NULL, 0, MyThreadFunction, NULL, 0, &dwThreadId);
    if (hThread == NULL)
    {
        printf("Failed to create thread\n");
        return 1;
    }

    // 等待线程结束
    WaitForSingleObject(hThread, INFINITE);

    // 获取线程返回值
    DWORD dwExitCode;
    GetExitCodeThread(hThread, &dwExitCode);

    // 打印返回的char *数据
    printf("Returned string: %s\n", (char*)dwExitCode);

    // 释放内存
    free((char*)dwExitCode);

    // 关闭线程句柄
    CloseHandle(hThread);

    return 0;
}

#include <stdio.h>
#include <windows.h>

char* g_result; // 全局变量

DWORD WINAPI MyThreadFunction(LPVOID lpParam)
{
    g_result = "Hello"; // 赋值给全局变量
    return 0;
}

int main()
{
    HANDLE hThread;
    DWORD dwThreadId;

    hThread = CreateThread(NULL, 0, MyThreadFunction, NULL, 0, &dwThreadId);
    if (hThread == NULL)
    {
        printf("Failed to create thread\n");
        return 1;
    }

    // 等待线程结束
    WaitForSingleObject(hThread, INFINITE);

    // 打印返回的char *数据
    printf("Returned string: %s\n", g_result);

    // 关闭线程句柄
    CloseHandle(hThread);

    return 0;
}