自定义字符类

   当 VC不使用MFC,无法使用属于MFC的CString,为此自定义一个,先暂时使用,后续完善。

头文件:

#pragma once

#define MAX_LOADSTRING 100 // 最大字符数

class CString
{
  public:
      
      char *c_str, 
           cSAr[MAX_LOADSTRING];
      WCHAR *w_str,
            wSAr[MAX_LOADSTRING];

      void operator = (const char *str); // = 操作,获得c字符串: str = "sss"; 式样
      void operator + (const CString str); // + 操作,获得s字符串加: s1 = s2 + s3; 式样
      void operator += (const CString str); // += 操作,获得s字符串加: s1 += "s2"; 式样

      int StrCount(void);// 返回字符串长度s.StrCount()
  
      CString(void);

  private:

      int iStrCount; // 字符串数量

      void CharToWChar(const char *pChar);//窄字符转宽字符
      void WCharToChar(WCHAR *pWideChar);//宽字符转窄字符 
};

C文件:

#include "stdafx.h"
#include "String.h"

CString::CString(void)
{
    c_str = cSAr;
    w_str = wSAr;
}

void CString::operator = (const char *str) // =
{
    if(str == NULL) return;
    iStrCount = strlen(str);//获取字符串长度
    for(int i = 0; i < iStrCount; i++)//转内存储 
        cSAr[i] = str[i];
    cSAr[iStrCount] = 0;
    CharToWChar(str);//转宽字符
}

void CString::operator + (const CString str) // +
{
     //
}

void CString::operator += (const CString str) // +=
{
  //
}

int CString::StrCount(void)
{
    return iStrCount;
}

void CString::CharToWChar(const char *pChar)//窄字符转宽字符
{
    if(pChar == NULL) return;
    int needWChar = MultiByteToWideChar(CP_ACP, 0, pChar, -1, NULL, 0);
    if(needWChar > 0)
      {
          ZeroMemory(wSAr, (needWChar + 1) * sizeof(WCHAR));
          MultiByteToWideChar(CP_ACP, 0, pChar, -1, wSAr, needWChar);
      }
}

void CString::WCharToChar(WCHAR *pWideChar)//宽字符转窄字符  
{
    if(pWideChar == NULL) return;
    int needBytes = WideCharToMultiByte(CP_ACP, 0, pWideChar, -1, NULL, 0, NULL, NULL);
    if(needBytes > 0)
      {
          ZeroMemory(cSAr, (needBytes + 1) * sizeof(char));
          WideCharToMultiByte(CP_ACP, 0, pWideChar, -1, cSAr, needBytes, NULL, NULL);
      }
}

 

posted @ 2018-06-13 11:37  hbg200  阅读(157)  评论(0编辑  收藏  举报