strclass.h

PC端通过WINCE端实现摄像功能

//----------------------------------------------------------------------------------------------------------
//使用方法：
//先用string类型处理字符串，当要传递参数时(参数为LPCWSTR)，才把string to wstring ,然后再传递wstring.c_str();
//-----------------------------------------------------------------------------------------------------------
#include <windows.h>
#include <atlbase.h>
#include <sstream>
#include <string>
using namespace std;

	string Int2Str(int i)
	{ 
		ostringstream os; 
		os << i; 
		return os.str(); 
	};

	int Str2Int(string str)
	{
		return atoi(str.c_str());
	}

    //------wstring to string
	string ws2s(wstring& inputws)
	{ 
		LPCWSTR pwszSrc=inputws.c_str();
		int nLen = WideCharToMultiByte(CP_ACP, 0, pwszSrc, -1, NULL, 0, NULL, NULL);
		if (nLen<= 0) return std::string("");
		char* pszDst = new char[nLen];
		if (NULL == pszDst) return std::string("");
		WideCharToMultiByte(CP_ACP, 0, pwszSrc, -1, pszDst, nLen, NULL, NULL);
		pszDst[nLen -1] = 0;
		std::string strTemp(pszDst);
		delete [] pszDst;
		return strTemp;
	}

	//------string to wstring
	std::wstring s2ws(const string& s)
	{ 
		LPCSTR pszSrc=s.c_str();
		int nLen=s.size();
		int nSize = MultiByteToWideChar(CP_ACP, 0, (LPCSTR)pszSrc, nLen, 0, 0);
		if(nSize <= 0) return NULL;
		WCHAR *pwszDst = new WCHAR[nSize+1];
		if( NULL == pwszDst) return NULL;
		MultiByteToWideChar(CP_ACP, 0,(LPCSTR)pszSrc, nLen, pwszDst, nSize);
		pwszDst[nSize] = 0;
		if( pwszDst[0] == 0xFEFF) // skip Oxfeff
			for(int i = 0; i < nSize; i ++) 
				pwszDst[i] = pwszDst[i+1]; 
		wstring wcharString(pwszDst);
		delete pwszDst;
		return wcharString;
	
};

    
	void replace(string & strBig, const string & strsrc, const string &strdst) {
        string::size_type pos=0;
        string::size_type srclen=strsrc.size();
        string::size_type dstlen=strdst.size();
        while( (pos=strBig.find(strsrc, pos)) != string::npos){
                strBig.erase(pos, srclen);
                strBig.insert(pos, strdst);
                pos += dstlen;
        }
}