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求指教：readstring怎么回到开头
cstdiofile file
while(file.readstring(buff,128))
{
......
}
我读到file的最后了，下次怎么重新开始从头读，不想再OPEN一次了，谢谢
while(file.readstring(buff,128))
{
......
}
我读到file的最后了，下次怎么重新开始从头读，不想再OPEN一次了，谢谢
...全文
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flyskytoday 2009-08-11
cstdiofile也是继承cfile类
用seek来指向头
cstdiofile file;
file.Seek(0,CFile::begin);
用seek来指向头
cstdiofile file;
file.Seek(0,CFile::begin);
yuhudie203 2009-08-11
还有一个 rewind(file);
MoXiaoRab 2009-08-11
CStdioFile cfile(_T("Stdio_Seek_File.dat"), CFile::modeWrite |
CFile::modeCreate);
LONGLONG lOff = 1000;
ULONGLONG lActual = cfile.Seek(lOff, CFile::begin);
oktsl 2009-08-11
谢谢楼上的兄弟
这论坛好快的速度
我是新人，再次感谢
这论坛好快的速度
我是新人，再次感谢
MoXiaoRab 2009-08-11
CStdioFile::Seek
virtual ULONGLONG Seek(
LONGLONG lOff,
UINT nFrom
);
Parameters
lOff
Number of bytes to move the pointer.
nFrom
Pointer movement mode. Must be one of the following values:
CFile::begin: Move the file pointer lOff bytes forward from the beginning of the file.
CFile::current: Move the file pointer lOff bytes from the current position in the file.
CFile::end: Move the file pointer lOff bytes from the end of the file. Note that lOff must be negative to seek into the existing file; positive values will seek past the end of the file.
virtual ULONGLONG Seek(
LONGLONG lOff,
UINT nFrom
);
Parameters
lOff
Number of bytes to move the pointer.
nFrom
Pointer movement mode. Must be one of the following values:
CFile::begin: Move the file pointer lOff bytes forward from the beginning of the file.
CFile::current: Move the file pointer lOff bytes from the current position in the file.
CFile::end: Move the file pointer lOff bytes from the end of the file. Note that lOff must be negative to seek into the existing file; positive values will seek past the end of the file.
yuhudie203 2009-08-11
[Quote=引用 1 楼 happyparrot 的回复:]
用file.SeekToBegin()
[/Quote]
right
用file.SeekToBegin()
[/Quote]
right
zhuzhenlei 2009-08-11
[Quote=引用 1 楼 happyparrot 的回复:]
用file.SeekToBegin()
[/Quote]
、、
用file.SeekToBegin()
[/Quote]
、、
快乐鹦鹉 2009-08-11
用file.SeekToBegin()