void CMy0、测试文件访问权限Dlg::OnBnClickedButton1()
{
	// TODO: 在此添加控件通知处理程序代码
	UpdateData();
	if(access(m_FileName.GetBuffer(m_FileName.GetLength()), R_OK) == 0)
		m_R="可读";
	else
		m_R="不可读";
	if(access(m_FileName.GetBuffer(m_FileName.GetLength()), W_OK) == 0)
		m_W="可写";
	else
		m_W="不可写";
	if(access(m_FileName.GetBuffer(m_FileName.GetLength()), X_OK) == 0)
		m_E="可执行";
	else
		m_E="不可执行";
	UpdateData(false);
}