cstring replace

The relationship and conversion between string, cstring, and char * have always been understandable, and the MFC program does not know when there will be one .. So I sorted out the online things based on my understanding. I. Overview FirstChar * (this is the basis)Because it should be the simplest and most basic, it is equivalent to a general int * or double * in terms of function, this basic structure. However, due to the special nature of the string

Reprinted: Http://blog.pfan.cn/xman/43212.html Getbuffer () is mainly used to lock the buffer length of the string, while releasebuffer is used to unlock the cstring object.CodeContinueAchieve adaptive length growth. Cstring: getbuffer has two overloaded versions: Lptstr getbuffer (); lptstr getbuffer (INT nminbufferlength ); In the second version, when the set length is smaller than the original

In the case of common ASCII encoding, the system stores cstring in a way similar to char * by default (in my opinion ). For example, you can declare and assign a cstring as follows: Char * charstr = "kenko "; Cstring CSTR = charstr; In ASCII encoding, cstring reads the memory location of the pointer behind it a

C ++ programming language is a widely used and powerful programming language. In the eyes of developers, this programming language plays an important role in program development. In C ++, The CString class is more powerful than the STL string class. when new users use CString, they will be attracted by its powerful functions. however, due to lack of knowledge about its internal mechanism, beginners are pron

In C, it indicates a string. It does not have the string concept. Only char * and char [] can be used. In MFC, to serve string operations, a class CString is added, the header file of this class is afx. h.The conversion from char * To CString is simple. You only need to use the CString constructor.This document describes how to convert

Cstring, Int, String, char * ConversionString to cstringCstring. Format ("% s", String. c_str ());Convert Char to cstringCstring. Format ("% s", char *);Char to stringString S (char *);String to char *Char * P = string. c_str ();Cstring to stringString S (cstring. getbuffer ());1, string-> cstringCstring. Format ("% s", String. c_str ());C_str () is indeed better

(1) convert char * To cstring If char * is converted to cstring, you can use cstring: format in addition to direct value assignment. For example: Char charray [] = "this is a test ";Char * P = "this is a test "; Or Lpstr P = "this is a test "; Or in the use of Unicode applications that have been defined Tchar * P = _ T ("this is a test "); Or Lptstr P

Summarize the various types of Unicode conversions that have recently been used, and encounter additional additions in the future:1. String Turn CStringString a= "abc";CString str=cstring (A.c_str ());Or Str.format ("%s", A.c_str ())2, int turn CStringInt A;CString Cstr;Cstr.format (_t ("%d"), a);3, Char turn CStringCstring.format ("%s", char*);Cases:Char szpath[

W_charis based on the negation of _unicode at compile time. Similarly, TCHAR is the same as the target Word macros.In the case of ANSI, LPCTSTR is a const char, a constant string (which cannot be modified), and LPTSTR is a char , an ordinary string (very large, modifiable).CString and LPCTSTRcstring and LPCTSTR can be said to be universal. The reason for this is the automatic type conversion defined by CString