A CStdioFile object represents a C run-time stream file as opened by the fopen function. Stream files are buffered and can be opened in either text mode (the default) or binary mode.A CStdioFile object represents a C run-time stream file as opened by the fopen function. Stream files are buffered and can be opened in either text mode (the default) or binary mode.
Text mode provides special processing for carriage return–linefeed pairs. When you write a newline character (0x0A) to a text-mode CStdioFile object, the byte pair (0x0A, 0x0D) is sent to the file. When you read, the byte pair (0x0A, 0x0D) is translated to a single 0x0A byte.
#include <afx.h>
The following CFile functions are not implemented for CStdioFile.
Duplicate
LockRange
UnlockRange
If you call these functions on a CStdioFile, you will get a CNotSupportedException.