CFile::hFileNull

Determines the presence of a valid file handle for the CFile object.

static AFX_DATA const HANDLE hFileNull;

Remarks

This constant is used to determine if the CFile object has a valid file handle.

The following example demonstrates this operation:

if (myFile.m_hFile != CFile::hFileNull)
    ;//perform operations on the file 
else
    ;//indicate the presence of an invalid handle         

Requirements

Header: afx.h

See Also

Reference

CFile Class

Hierarchy Chart

Other Resources

CFile Members