////2017-11-5///
# define _CRT_SECURE_NO_WARNINGS
# include <stdio.h>
# include <conio.h>
# include <windows.h>
# include <pthread.h>
# include <string.h>
# include <time.h>

HANDLE output (char * str , HANDLE hOut , COORD xy)
{
    if (hOut == NULL)
        hOut = GetStdHandle (STD_OUTPUT_HANDLE);
    WriteConsoleOutputCharacterA (hOut , str , strlen (str) , xy , NULL);
    return hOut;
}

HANDLE CreateBuffer (void)
{
    HANDLE hOutBuffer = CreateConsoleScreenBuffer (GENERIC_READ | GENERIC_WRITE , FILE_SHARE_READ | FILE_SHARE_WRITE ,
        NULL , CONSOLE_TEXTMODE_BUFFER , NULL);
    return hOutBuffer;
}

struct param
{
    HANDLE hOutBuffer;
    HANDLE hOut;
    COORD xy;
};

void * fun (void * p)
{   
    param * Param = (param *)p;
    char cmd[260];
    char times[260];
    struct tm *pt;
    time_t t;
    DWORD n;
    while (true && !GetAsyncKeyState (VK_ESCAPE))
    {
        t = time (NULL);
        pt = localtime (&t);
        memset (times , 0 , sizeof (times));
        memset (cmd , 0 , sizeof (cmd));
        sprintf (cmd , "%d:%d:%d" , pt->tm_hour , pt->tm_min , pt->tm_sec);   
        output (cmd , Param->hOutBuffer , Param->xy);
        ReadConsoleOutputCharacterA (Param->hOutBuffer , times , strlen (cmd) , Param->xy , &n);
        output (times , Param->hOut , Param->xy);
        Sleep (500);
        FillConsoleOutputCharacterA (Param->hOut , ' ' , strlen (cmd) , Param->xy , NULL);
    }
    return 0;
}

void CreateLine (HANDLE hOutBuffer , HANDLE hOut , COORD xy)
{
    param p = {hOutBuffer , hOut , xy};
    pthread_t thid;
    pthread_attr_t attr;
    pthread_attr_init (&attr);
    pthread_attr_setdetachstate (&attr , PTHREAD_CREATE_JOINABLE);
    pthread_attr_setscope (&attr , PTHREAD_SCOPE_PROCESS);
    pthread_create (&thid , &attr , fun , &p);
    pthread_detach (thid);
}

int main (void)
{
    char * str = "\0";
    COORD xy = {10 , 10};
    HANDLE hOut , hOutBuffer;
    hOut = output (str , NULL , xy);
    hOutBuffer = CreateBuffer ();
    CreateLine (hOutBuffer , hOut , xy);
    COORD XY = {10 , 20};
    getch ();
    output ("你好！" , hOut , XY);
    getch ();

    return 0;
}

在主函数里，当我加上output ("你好！" , hOut , XY);这一句的时候，为什么前面的时间不显示了呢？

没有人

这个要自己添加的

在练习，不会所以才在这里问，寻求答案。非常感谢您的回复。您所提到的我都会再去尝试、验证的。千言万语：谢谢！

[此贴子已经被作者于2017-11-8 11:46编辑过]