哪里写错了吗为什么我得到的str不是可用字节数

Question

void CgetfreediskDlg::OnBnClickedButton1()
{
// TODO: 在此添加控件通知处理程序代码
ULARGE_INTEGER   FreeAv,TotalBytes,FreeBytes;
CString Driver,strFreeBytes;
Driver=_T("E:\\");
     if(GetDiskFreeSpaceEx(Driver,&FreeAv,&TotalBytes,&FreeBytes))   
     {   
             //格式化信息，并显示出来
            strFreeBytes.Format("%u",FreeBytes.QuadPart);   
        }
 WritePrivateProfileString("free","str1",strFreeBytes,".\\Config.ini");}

Answer 1

strFreeBytes.Format("%I64u",FreeBytes.QuadPart);   

Answer 2

用64位变量就可以了void CgetfreediskDlg::OnBnClickedButton1()
{
    // TODO: 在此添加控件通知处理程序代码
__int64   FreeAv,TotalBytes,FreeBytes;
CString Driver,strFreeBytes;
Driver=_T("E:\\");
     if(GetDiskFreeSpaceEx(Driver,(PULARGE_INTEGER),(PULARGE_INTEGER)&FreeAv,(PULARGE_INTEGER)&TotalBytes,(PULARGE_INTEGER)&FreeBytes))   
     {   
             //格式化信息，并显示出来
            strFreeBytes.Format("%I64d",FreeBytes);   
        }
     WritePrivateProfileString("free","str1",strFreeBytes,".\\Config.ini");}

Answer 3

调试的时候看到的
FreeBytes.QuadPart是可用字节数15695372288
可得到的strFreeBytes却变成了2810470400

Answer 4

http://blog.csdn.net/caimouse/archive/2007/11/01/1861966.aspx

Answer 5

搞定....不过二楼的代码有多出来一个,(PULARGE_INTEGER),

Answer 6

WritePrivateProfileString参数是不是有点问题?
我觉得正确的应该是:
WritePrivateProfileString("free","str1","",strFreeBytes,".\\Config.ini");

Answer 7

这个真不懂....我写代码基本靠复制贴粘....不过结果还是对的...config.ini保存正确.....