backupread函数
bool backupread(handle hfile,lpbyte lpbuffer,dword nnumberofbytestoread,lpdword lpnumberofbytesread,bool babort,bool bprocesssecurity,lpvoid ×lpcontext);
hfile:createfile函数创建
lpbuffer:指针
nnumberofbytestoread:缓冲区大小
lpnumberofbytesread:变量
babort:是否非正常结束
bprocesssecurity:是否访问控制列表数据
lpcontext:指向保存指针变量
此函数在delphi中如何用?