这是"串口通信编程实践"一书的程序源代码

				// SmsTestDoc.h : interface of the CSmsTestDoc class
				//
				/////////////////////////////////////////////////////////////////////////////
				
				#if !defined(AFX_SMSTESTDOC_H__D5E62B9F_1602_42FA_8931_4059B5EED5C6__INCLUDED_)
				#define AFX_SMSTESTDOC_H__D5E62B9F_1602_42FA_8931_4059B5EED5C6__INCLUDED_
				
				#if _MSC_VER > 1000
				#pragma once
				#endif // _MSC_VER > 1000
				
				
				class CSmsTestDoc : public CDocument
				{
				protected: // create from serialization only
					CSmsTestDoc();
					DECLARE_DYNCREATE(CSmsTestDoc)
				
				// Attributes
				public:
				
				// Operations
				public:
				
				// Overrides
					// ClassWizard generated virtual function overrides
					//{{AFX_VIRTUAL(CSmsTestDoc)
					public:
					virtual BOOL OnNewDocument();
					virtual void Serialize(CArchive& ar);
					//}}AFX_VIRTUAL
				
				// Implementation
				public:
					virtual ~CSmsTestDoc();
				#ifdef _DEBUG
					virtual void AssertValid() const;
					virtual void Dump(CDumpContext& dc) const;
				#endif
				
				protected:
				
				// Generated message map functions
				protected:
					//{{AFX_MSG(CSmsTestDoc)
						// NOTE - the ClassWizard will add and remove member functions here.
						//    DO NOT EDIT what you see in these blocks of generated code !
					//}}AFX_MSG
					DECLARE_MESSAGE_MAP()
				};
				
				/////////////////////////////////////////////////////////////////////////////
				
				//{{AFX_INSERT_LOCATION}}
				// Microsoft Visual C++ will insert additional declarations immediately before the previous line.
				
				#endif // !defined(AFX_SMSTESTDOC_H__D5E62B9F_1602_42FA_8931_4059B5EED5C6__INCLUDED_)