关于CString class menber

Squall_163 2006-02-03 03:42:24

初学MFC，发现其中的CString类很方便，但在我的MSDN July2004中却只能搜索到CStringT。有人能告诉我CString的类成员吗？谢谢拉

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Squall_163 2006-02-04

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恩，谢谢各位：）

Snow_Ice11111 2006-02-04

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你也可以在这里找到各个成员的用法：
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vcmfc98/html/_mfc_cstring_class_members.asp
CStringT和CString还是有一点差别的，起码CStringT中有个Trim方法是CString所没有的，不过这两个类的大部分方法差别不大，你参考CStringT的时候注意到这一点就无大碍了。

Snow_Ice11111 2006-02-04

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CStringT和CString是不同的两个类。CString类的成员可以在Afx.h文件中找，这个文件比较大，你用“class CString”作关键字搜索一下就行了(不要双引号，找到第二个位置就是这个类的定义)。

Squall_163 2006-02-03

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恩，谢谢了，那我就照着CStringT的用了

菜牛 2006-02-03

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就是CStringT

lzd 2006-02-03

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当应用程序应用在MFC时 CStringT 可以为
CStringA An ANSI character type string with CRT support.
CStringW A Unicode character type string with CRT support.
CString Both ANSI and Unicode character types with CRT support.

// ============================================================================= // FILE: StdString.h // AUTHOR: Joe O'Leary (with outside help noted in comments) // // If you find any bugs in this code, please let me know: // // jmoleary@earthlink.net // http://www.joeo.net/stdstring.htm (a bit outdated) // // The latest version of this code should always be available at the // following link: // // http://www.joeo.net/code/StdString.zip (Dec 6, 2003) // // // REMARKS: // This header file declares the CStdStr template. This template derives // the Standard C++ Library basic_string<> template and add to it the // the following conveniences: // - The full MFC CString set of functions (including implicit cast) // - writing to/reading from COM IStream interfaces // - Functional objects for use in STL algorithms // // From this template, we intstantiate two classes: CStdStringA and // CStdStringW. The name "CStdString" is just a #define of one of these, // based upone the UNICODE macro setting // // This header also declares our own version of the MFC/ATL UNICODE-MBCS // conversion macros. Our version looks exactly like the Microsoft's to // facilitate portability. // // NOTE: // If you you use this in an MFC or ATL build, you should include either // afx.h or atlbase.h first, as appropriate. // // PEOPLE WHO HAVE CONTRIBUTED TO THIS CLASS: // // Several people have helped me iron out problems and othewise improve // this class. OK, this is a long list but in my own defense, this code // has undergone two major rewrites. Many of the improvements became // necessary after I rewrote the code as a template. Others helped me // improve the CString facade. // // Anyway, these people are (in chronological order): // // - Pete the Plumber (???) // - Julian Selman // - Chris (of Melbsys) // - Dave Plummer // - John C Sipos // - Chris Sells // - Nigel Nunn // - Fan Xia // - Matthew Williams // - Carl Engman // - Mark Zeren // - Craig Watson // - Rich Zuris // - Karim Ratib // - Chris Conti // - Baptiste Lepilleur // - Greg Pickles // - Jim Cline // - Jeff Kohn // - Todd Heckel // - Ullrich Poll?hne // - Joe Vitaterna // - Joe Woodbury // - Aaron (no last name) // - Joldakowski (???) // - Scott Hathaway // - Eric Nitzche // - Pablo Presedo // - Farrokh Nejadlotfi // - Jason Mills // - Igor Kholodov // - Mike Crusader // - John James // - Wang Haifeng // - Tim Dowty // - Arnt Witteveen // - Glen Maynard // - Paul DeMarco // - Bagira (full name?) // - Ronny Schulz // - Jakko Van Hunen // - Charles Godwin // - Henk Demper // - Greg Marr // - Bill Carducci // - Brian Groose // - MKingman // - Don Beusee // // REVISION HISTORY // // 2005-JAN-10 - Thanks to Don Beusee for pointing out the danger in mapping // length-checked formatting functions to non-length-checked // CRT equivalents. Also thanks to him for motivating me to // optimize my implementation of Replace() // // 2004-APR-22 - A big, big thank you to "MKingman" (whoever you are) for // finally spotting a silly little error in StdCodeCvt that // has been causing me (and users of CStdString) problems for // years in some relatively rare conversions. I had reversed // two length arguments. // // 2003-NOV-24 - Thanks to a bunch of people for helping me clean up many // compiler warnings (and yes, even a couple of actual compiler // errors). These include Henk Demper for figuring out how // to make the Intellisense work on with CStdString on VC6, // something I was never able to do. Greg Marr pointed out // a compiler warning about an unreferenced symbol and a // problem with my version of Load in MFC builds. Bill // Carducci took a lot of time with me to help me figure out // why some implementations of the Standard C++ Library were // returning error codes for apparently successful conversions // between ASCII and UNICODE. Finally thanks to Brian Groose // for helping me fix compiler signed unsigned warnings in // several functions. // // 2003-JUL-10 - Thanks to Charles Godwin for making me realize my 'FmtArg' // fixes had inadvertently broken the DLL-export code (which is // normally commented out. I had to move it up higher. Also // this helped me catch a bug in ssicoll that would prevent // compilation, otherwise. // // 2003-MAR-14 - Thanks to Jakko Van Hunen for pointing out a copy-and-paste // bug in one of the overloads of FmtArg. // // 2003-MAR-10 - Thanks to Ronny Schulz for (twice!) sending me some changes // to help CStdString build on SGI and for pointing out an // error in placement of my preprocessor macros for ssfmtmsg. // // 2002-NOV-26 - Thanks to Bagira for pointing out that my implementation of // SpanExcluding was not properly handling the case in which // the string did NOT contain any of the given characters // // 2002-OCT-21 - Many thanks to Paul DeMarco who was invaluable in helping me // get this code working with Borland's free compiler as well // as the Dev-C++ compiler (available free at SourceForge). // // 2002-SEP-13 - Thanks to Glen Maynard who helped me get rid of some loud // but harmless warnings that were showing up on g++. Glen // also pointed out that some pre-declarations of FmtArg<> // specializations were unnecessary (and no good on G++) // // 2002-JUN-26 - Thanks to Arnt Witteveen for pointing out that I was using // static_cast<> in a place in which I should have been using // reinterpret_cast<> (the ctor for unsigned char strings). // That's what happens when I don't unit-test properly! // Arnt also noticed that CString was silently correcting the // 'nCount' argument to Left() and Right() where CStdString was // not (and crashing if it was bad). That is also now fixed! // // 2002-FEB-25 - Thanks to Tim Dowty for pointing out (and giving me the fix // for) a conversion problem with non-ASCII MBCS characters. // CStdString is now used in my favorite commercial MP3 player! // // 2001-DEC-06 - Thanks to Wang Haifeng for spotting a problem in one of the // assignment operators (for _bstr_t) that would cause compiler // errors when refcounting protection was turned off. // // 2001-NOV-27 - Remove calls to operator!= which involve reverse_iterators // due to a conflict with the rel_ops operator!=. Thanks to // John James for pointing this out. // // 2001-OCT-29 - Added a minor range checking fix for the Mid function to // make it as forgiving as CString's version is. Thanks to // Igor Kholodov for noticing this. // - Added a specialization of std::swap for CStdString. Thanks // to Mike Crusader for suggesting this! It's commented out // because you're not supposed to inject your own code into the // 'std' namespace. But if you don't care about that, it's // there if you want it // - Thanks to Jason Mills for catching a case where CString was // more forgiving in the Delete() function than I was. // // 2001-JUN-06 - I was violating the Standard name lookup rules stated // in [14.6.2(3)]. None of the compilers I've tried so // far apparently caught this but HP-UX aCC 3.30 did. The // fix was to add 'this->' prefixes in many places. // Thanks to Farrokh Nejadlotfi for this! // // 2001-APR-27 - StreamLoad was calculating the number of BYTES in one // case, not characters. Thanks to Pablo Presedo for this. // // 2001-FEB-23 - Replace() had a bug which caused infinite loops if the // source string was empty. Fixed thanks to Eric Nitzsche. // // 2001-FEB-23 - Scott Hathaway was a huge help in providing me with the // ability to build CStdString on Sun Unix systems. He // sent me detailed build reports about what works and what // does not. If CStdString compiles on your Unix box, you // can thank Scott for it. // // 2000-DEC-29 - Joldakowski noticed one overload of Insert failed to do a // range check as CString's does. Now fixed -- thanks! // // 2000-NOV-07 - Aaron pointed out that I was calling static member // functions of char_traits via a temporary. This was not // technically wrong, but it was unnecessary and caused // problems for poor old buggy VC5. Thanks Aaron! // // 2000-JUL-11 - Joe Woodbury noted that the CString::Find docs don't match // what the CString::Find code really ends up doing. I was // trying to match the docs. Now I match the CString code // - Joe also caught me truncating strings for GetBuffer() calls // when the supplied length was less than the current length. // // 2000-MAY-25 - Better support for STLPORT's Standard library distribution // - Got rid of the NSP macro - it interfered with Koenig lookup // - Thanks to Joe Woodbury for catching a TrimLeft() bug that // I introduced in January. Empty strings were not getting // trimmed // // 2000-APR-17 - Thanks to Joe Vitaterna for pointing out that ReverseFind // is supposed to be a const function. // // 2000-MAR-07 - Thanks to Ullrich Poll?hne for catching a range bug in one // of the overloads of assign. // // 2000-FEB-01 - You can now use CStdString on the Mac with CodeWarrior! // Thanks to Todd Heckel for helping out with this. // // 2000-JAN-23 - Thanks to Jim Cline for pointing out how I could make the // Trim() function more efficient. // - Thanks to Jeff Kohn for prompting me to find and fix a typo // in one of the addition operators that takes _bstr_t. // - Got rid of the .CPP file - you only need StdString.h now! // // 1999-DEC-22 - Thanks to Greg Pickles for helping me identify a problem // with my implementation of CStdString::FormatV in which // resulting string might not be properly NULL terminated. // // 1999-DEC-06 - Chris Conti pointed yet another basic_string<> assignment // bug that MS has not fixed. CStdString did nothing to fix // it either but it does now! The bug was: create a string // longer than 31 characters, get a pointer to it (via c_str()) // and then assign that pointer to the original string object. // The resulting string would be empty. Not with CStdString! // // 1999-OCT-06 - BufferSet was erasing the string even when it was merely // supposed to shrink it. Fixed. Thanks to Chris Conti. // - Some of the Q172398 fixes were not checking for assignment- // to-self. Fixed. Thanks to Baptiste Lepilleur. // // 1999-AUG-20 - Improved Load() function to be more efficient by using // SizeOfResource(). Thanks to Rich Zuris for this. // - Corrected resource ID constructor, again thanks to Rich. // - Fixed a bug that occurred with UNICODE characters above // the first 255 ANSI ones. Thanks to Craig Watson. // - Added missing overloads of TrimLeft() and TrimRight(). // Thanks to Karim Ratib for pointing them out // // 1999-JUL-21 - Made all calls to GetBuf() with no args check length first. // // 1999-JUL-10 - Improved MFC/ATL independence of conversion macros // - Added SS_NO_REFCOUNT macro to allow you to disable any // reference-counting your basic_string<> impl. may do. // - Improved ReleaseBuffer() to be as forgiving as CString. // Thanks for Fan Xia for helping me find this and to // Matthew Williams for pointing it out directly. // // 1999-JUL-06 - Thanks to Nigel Nunn for catching a very sneaky bug in // ToLower/ToUpper. They should call GetBuf() instead of // data() in order to ensure the changed string buffer is not // reference-counted (in those implementations that refcount). // // 1999-JUL-01 - Added a true CString facade. Now you can use CStdString as // a drop-in replacement for CString. If you find this useful, // you can thank Chris Sells for finally convincing me to give // in and implement it. // - Changed operators << and >> (for MFC CArchive) to serialize // EXACTLY as CString's do. So now you can send a CString out // to a CArchive and later read it in as a CStdString. I have // no idea why you would want to do this but you can. // // 1999-JUN-21 - Changed the CStdString class into the CStdStr template. // - Fixed FormatV() to correctly decrement the loop counter. // This was harmless bug but a bug nevertheless. Thanks to // Chris (of Melbsys) for pointing it out // - Changed Format() to try a normal stack-based array before // using to _alloca(). // - Updated the text conversion macros to properly use code // pages and to fit in better in MFC/ATL builds. In other // words, I copied Microsoft's conversion stuff again. // - Added equivalents of CString::GetBuffer, GetBufferSetLength // - new sscpy() replacement of CStdString::CopyString() // - a Trim() function that combines TrimRight() and TrimLeft(). // // 1999-MAR-13 - Corrected the "NotSpace" functional object to use _istpace() // instead of _isspace() Thanks to Dave Plummer for this. // // 1999-FEB-26 - Removed errant line (left over from testing) that #defined // _MFC_VER. Thanks to John C Sipos for noticing this. // // 1999-FEB-03 - Fixed a bug in a rarely-used overload of operator+() that // caused infinite recursion and stack overflow // - Added member functions to simplify the process of // persisting CStdStrings to/from DCOM IStream interfaces // - Added functional objects (e.g. StdStringLessNoCase) that // allow CStdStrings to be used as keys STL map objects with // case-insensitive comparison // - Added array indexing operators (i.e. operator[]). I // originally assumed that these were unnecessary and would be // inherited from basic_string. However, without them, Visual // C++ complains about ambiguous overloads when you try to use // them. Thanks to Julian Selman to pointing this out. // // 1998-FEB-?? - Added overloads of assign() function to completely account // for Q172398 bug. Thanks to "Pete the Plumber" for this // // 1998-FEB-?? - Initial submission // // COPYRIGHT: // 2002 Joseph M. O'Leary. This code is 100% free. Use it anywhere you // want. Rewrite it, restructure it, whatever. If you can write software // that makes money off of it, good for you. I kinda like capitalism. // Please don't blame me if it causes your $30 billion dollar satellite // explode in orbit. If you redistribute it in any form, I'd appreciate it // if you would leave this notice here. // ============

rsa算法设计程序 #if !defined(AFX_RSAA_H__081D9EE0_1245_11D5_80AC_0000E8810675__INCLUDED_) #define AFX_RSAA_H__081D9EE0_1245_11D5_80AC_0000E8810675__INCLUDED_ #if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000 // RsaA.h : header file // #include #include #include<string.h> #include const DATALENGTH=350; //大数类型的长度 const MLENGTH=10; //质数的长度 const TESTNUM=30; //测试质数时的比较的次数 const SKLENGTH=4; //私钥的长度 typedef signed char byteint[DATALENGTH]; //定义大数类型 typedef signed char mtype[MLENGTH]; //定义质数的大数类型 //extern "C" __declspec(dllexport) void RsaAGenKeys(CString& pk,CString& sk,CString& R); //提供给服务器使用的秘钥产生函数 //extern "C" __declspec(dllexport) int RsaAEncrypt(CString& source,const char* key,const char* R,CStringArray& result);//加密 //extern "C" __declspec(dllexport) CString RsaADecrypt(CStringArray& source,const char* sk,const char* R);//解密 ///////////////////////////////////////////////////////////////////////////// // CRsaA command target //实现RSA算法的类 class CRsaA : public CCmdTarget { DECLARE_DYNCREATE(CRsaA) CRsaA(); // protected constructor used by dynamic creation // 成员函数 private: void InitInt(void); //基本数据常量的初始化 int IntValid(byteint validtemp); //返回大数validtemp的非零位的个数 int IntCmp(byteint A,byteint B); //比较大数A和B是否相等 //自定义类型的基本运算 void Plus(byteint A,byteint B,byteint C); //C=A+B void Substract(byteint SA,byteint SB,byteint SC); //SC=SA-SB void Multiply(byteint A,byteint B,byteint C); //C=A*B void SetMode(byteint A,byteint B,byteint C,byteint D);//C=A%B int PowerMode(byteint A,byteint C,byteint D,signed char flag[400]);//computing A^B mod C-->D void IntRandom(byteint RandomA,int num); //随机产生一个大数 void LoadInt(byteint A,mtype B); //将质数类型转换为大数类型 void TransBi(byteint B,signed char flag[400]); //将大数B转换为二进制形式 void Mdata(); //产生用于生成质数中进行比较的数 int Prime(byteint Prm); //产生一个长度为MLENGTH的质数 int ComputingPK(byteint Rvalue,byteint SK,byteint PK); //计算公钥PK void ComputingR(byteint p,byteint q,byteint R); //计算模值R void ComputingRvalue(byteint p,byteint q,byteint Rvalue); //计算$(r) void IntCpy(byteint A1,byteint B1); //将大数B1的值拷贝到大数A1中 void SetZero(byteint A); //将大数A清零 CString PrtInt(byteint A); //将一个大数类型转换为一个CString类型 int Getinput(byteint result,CString input); //将字符串转换为对应的大数形式 int Getinput1(byteint result,unsigned long input); //将长整形数转换为对应的大数形式 void RsaDo(byteint source,byteint R,byteint key,byteint desti); //实现加解密 unsigned long Os2ip(unsigned char* pstr); CString Ip2os(CString str); public: void GenKeys(CString& pk,CString& sk,CString& R); //提供给服务器使用的秘钥产生函数 int RsaEncrypt(CString& source,const char* key,const char* R,CStringArray& result);//加密 CString RsaDecrypt(CStringArray& source,const char* sk,const char* R);//解密 void GenKeysTable(); //生成秘钥对文件 void LoadKeysFromFile(CString& r,CString& sk,CString& pk); //成员变量 private: byteint ONEVALUE; byteint ZEROVALUE; byteint TWOVALUE; byteint EIGHTVALUE; //O,1,2,8 constant mtype Model[TESTNUM]; //TESTNUM big number to be compared mtype mZEROVALUE,tempModel; //0 constant signed char flag[400]; // Operations public: // Overrides // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CRsaA) //}}AFX_VIRTUAL // Implementation //protected: virtual ~CRsaA(); // Generated message map functions //{{AFX_MSG(CRsaA) // afx_msg LONG OnComputing(WPARAM wParam, LPARAM lParam); // NOTE - the ClassWizard will add and remove member functions here. //}}AFX_MSG DECLARE_MESSAGE_MAP() }; ///////////////////////////////////////////////////////////////////////////// //{{AFX_INSERT_LOCATION}} // Microsoft Visual C++ will insert additional declarations im

FTP 服务器端，可用作小型FTP服务器.C++ 编写，在VC++下编译，工程文档齐全，直接打开即可编译。 class CFtpd : public CSocket { // Attributes public: // Operations public: CFtpd(); virtual ~CFtpd(); // Overrides public: char userfile[256]; char ipfile[256]; int m_buf_length; CCriticalSection absCrit; bool m_specify_data_port; UINT m_port_from; UINT m_port_to; void RemoveClient(CFtpdPi *pBind); void AddClient(CFtpdPi* pBind); UINT m_port; DWORD* lpDW2; DWORD* lpDW; LPHOSTENT lpHostEnt; char HostName[100]; unsigned long IP; char sTmp[32]; int i; CString Citem; int result; // SECFileSystem fs; char buf[256]; char tmp[32]; BOOL allow; POSITION pos; CString CSIP; int sl; // int m_kbs; bool b_speed_limit_in; bool b_speed_limit_out; int default_speed_in; int default_speed_out; char m_root_dir[256]; bool b_auto_choose_ip; bool b_switch_pasv_ip; bool b_ipchk_pasv; bool b_ipchk; CString m_servername; DWORD dwNumIf; DWORD GetLocalNumericIP(int Index); CStringList ipList; CFtpdPi* ftpdbindsock; CList ClientList; // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CFtpd) public: virtual void OnAccept(int nErrorCode); virtual void OnClose(int nErrorCode); //}}AFX_VIRTUAL // Generated message map functions //{{AFX_MSG(CFtpd) // NOTE - the ClassWizard will add and remove member functions here. //}}AFX_MSG // Implementation protected: };

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学生选课系统，C++、MFC、亲测可用 #if !defined(AFX_ADDADMINI_DLG_H__61C931CD_5BC2_44FC_8ABF_E46306AC046A__INCLUDED_) #define AFX_ADDADMINI_DLG_H__61C931CD_5BC2_44FC_8ABF_E46306AC046A__INCLUDED_ #if _MSC_VER > 1000 #pragma once #endif // _MSC_VER > 1000 // AddAdmini_dlg.h : header file // ///////////////////////////////////////////////////////////////////////////// // CAddAdmini_dlg dialog class CAddAdmini_dlg : public CDialog { // Construction public: CAddAdmini_dlg(CWnd* pParent = NULL); // standard constructor // Dialog Data //{{AFX_DATA(CAddAdmini_dlg) enum { IDD = IDD_ADD_ADMINI_DIALOG }; CString m_id; CString m_name; CString m_password; //}}AFX_DATA // Overrides // ClassWizard generated virtual function overrides //{{AFX_VIRTUAL(CAddAdmini_dlg) protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support //}}AFX_VIRTUAL // Implementation protected: // Generated message map functions //{{AFX_MSG(CAddAdmini_dlg) // NOTE: the ClassWizard will add member functions here //}}AFX_MSG DECLARE_MESSAGE_MAP() }; //{{AFX_INSERT_LOCATION}} // Microsoft Visual C++ will insert additional declarations immediately before the previous line. #endif // !defined(AFX_ADDADMINI_DLG_H__61C931CD_5BC2_44FC_8ABF_E46306AC046A__INCLUDED_)

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