*/
void Discard();
+ /**
+ Flush the data written to the file to disk.
+
+ This simply calls wxFile::Flush() for the underlying file and may be
+ necessary with file systems such as XFS and Ext4 under Linux. Calling
+ this function may however have serious performance implications and
+ also is not necessary with many other file systems so it is not done by
+ default -- but you can call it before calling Commit() to absolutely
+ ensure that the data was indeed written to the disk correctly.
+ */
+ bool Flush();
+
/**
Returns @true if the file was successfully opened.
*/
/**
Returns the length of the file.
- This method may return wxInvalidOffset if the length couldn't be
+ This method may return ::wxInvalidOffset if the length couldn't be
determined or 0 even for non-empty files if the file is not seekable.
In general, the only way to determine if the file for which this function
wxSeekMode mode = wxFromStart);
/**
- Returns the current position or wxInvalidOffset if file is not opened or
+ Returns the current position or ::wxInvalidOffset if file is not opened or
if another error occurred.
*/
wxFileOffset Tell() const;
@param count
Bytes to read
- @return The number of bytes read, or the symbol wxInvalidOffset.
+ @return The number of bytes read, or the symbol ::wxInvalidOffset.
*/
ssize_t Read(void* buffer, size_t count);
@param mode
One of wxFromStart, wxFromEnd, wxFromCurrent.
- @return The actual offset position achieved, or wxInvalidOffset on
+ @return The actual offset position achieved, or ::wxInvalidOffset on
failure.
*/
wxFileOffset Seek(wxFileOffset ofs,
@param ofs
Number of bytes before the end of the file.
- @return The actual offset position achieved, or wxInvalidOffset on
+ @return The actual offset position achieved, or ::wxInvalidOffset on
failure.
*/
wxFileOffset SeekEnd(wxFileOffset ofs = 0);
/**
- Returns the current position or wxInvalidOffset if file is not opened or
+ Returns the current position or ::wxInvalidOffset if file is not opened or
if another error occurred.
*/
wxFileOffset Tell() const;