1 /*
 2 获取系统目录，并保存在文件里
 3 [peoject->set->link->project chose->subsystem:console]
 4 */
 5 #include<windows.h>
 6 int main(int argc,TCHAR argv[])
 7 {
 8     //文件句柄
 9     HANDLE hFile;
10     DWORD dwWritten;
11     //字符数组，用于存储系统目录
12     TCHAR szSystemDir[MAX_PATH];
13     //获取系统目录
14     GetSystemDirectory(szSystemDir,MAX_PATH);
15 
16     //创建文件
17     hFile=CreateFile("systemroot.txt",
18         GENERIC_WRITE,
19         0,NULL,CREATE_ALWAYS,
20         FILE_ATTRIBUTE_NORMAL,
21         NULL);
22     //判断文件是否创建成功
23     if(hFile!= INVALID_HANDLE_VALUE)
24     {
25         //write systemRoot into file
26         if(!WriteFile(hFile,szSystemDir,lstrlen(szSystemDir),&dwWritten,NULL))
27         {
28             return GetLastError();
29         }
30     }
31     //close file and return
32     CloseHandle(hFile);
33     return 0;
34 }