GetCurrentDirectory 缓冲区未返回正确的值

发布于 2024-12-14 10:41:39 字数 523 浏览 0 评论 0原文

我对 GetCurrentDirectory() 有疑问，我不太明白为什么。我不明白的是它适用于 XP，但不适用于 7（或至少在我的计算机上）。这是我的代码：

char dir_name[1024]; // as a global variable
int get_files() {
// ...
DWORD dwRet;
dwRet = GetCurrentDirectory(MAX_PATH, dir_name);
printf("%s\n",dir_name);
printf("%d\n",dwRet);
//...
}

此代码将返回：

printf("%s\n",dir_name); -> return "c"

printf("%d\n",dwRet); -> 42 （这是应该返回的字符串的正确长度）

我不明白为什么 dir_name 只采用值“c”。

原文

I have an issue with GetCurrentDirectory(), and i don't really understand why. The thing i don't understand is that it works for XP but not for Seven (or at least on my computer). There is my code:

char dir_name[1024]; // as a global variable
int get_files() {
// ...
DWORD dwRet;
dwRet = GetCurrentDirectory(MAX_PATH, dir_name);
printf("%s\n",dir_name);
printf("%d\n",dwRet);
//...
}

This code will return:

printf("%s\n",dir_name); -> return "c"

printf("%d\n",dwRet); -> 42 (which is the right length of the string that should be returned)

I don't understand why dir_name only takes the value "c".

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私藏温柔 2024-12-21 10:41:39

我想，结果就是 Windows 7 中的 Unicode！该函数的每个 ascii 字符后面都有零。您正在通过 printf 打印它。您应该在程序中使用宽字符函数。就像wprintf一样。

尝试下面的代码：（在 Visual Studio 2008 + Windows 7 中测试）

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

WCHAR dir_name[1024]; // as a global variable

int get_files()
{
    // ...
    DWORD dwRet;
    dwRet = GetCurrentDirectory(MAX_PATH, dir_name);
    wprintf(L"%s\n", dir_name);
    printf("%d\n", dwRet);
    //...
    return 0;
}

I think, the result is Unicode in Windows Seven! and after each ascii character of this function there is zero. And you are printing it by printf. You should use wide-char functions in your program. Like wprintf.

Try below code: (Tested in Visual Studio 2008 + Windows 7)

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

WCHAR dir_name[1024]; // as a global variable

int get_files()
{
    // ...
    DWORD dwRet;
    dwRet = GetCurrentDirectory(MAX_PATH, dir_name);
    wprintf(L"%s\n", dir_name);
    printf("%d\n", dwRet);
    //...
    return 0;
}

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