读写ini文件

来自http://tunps.com/read-write-ini-file

WritePrivateProfileString("student","Name","xiaotun","c:\\setting.ini");

WritePrivateProfileString() 是往ini里面写入内容，"student"是section name,"Name"是key，"xiaotun"是value，c:\\setting.ini是指定写入的文件，必须是绝对路径，否则搜索%systemroot%目录

写入的文件内容是
[student]
Name=xiaotun

WritePrivateProfileString("student","Name","xiaotun","c:\\setting.ini");
WritePrivateProfileString("student","Age","18","c:\\setting.ini");

写入的内容是：
[student]
Name=xiaotun
Age=18

读取：
DWORD GetPrivateProfileString(
LPCTSTR lpAppName, // points to section name
LPCTSTR lpKeyName, // points to key name
LPCTSTR lpDefault, // points to default string
LPTSTR lpReturnedString, // points to destination buffer
DWORD nSize, // size of destination buffer
LPCTSTR lpFileName // points to initialization filename
);

例如：

GetPrivateProfileString(NULL,NULL,NULL,buf,sizeof(buf),"D:\\Debug\\test.inf");

和Write基本一样，只是第三个参数LPCTSTR lpDefault是当lpKeyName没有找到的时候的默认keyname。