isnconversion.cpp

参照别人的程序我做了这个动态改变界面的演示

// ISNConversion.cpp: implementation of the CISNConversion class.
// Copyright by bright_road 2001.7
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#include "mtou.h"
#include "ISNConversion.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif



CISNConversion::CISNConversion()
{

}

CISNConversion::~CISNConversion()
{

}


int CISNConversion::UnicodeToUtf8(wchar_t wch, char uch[])
{
	WORD  t;
	unsigned char ch;

    t=wch;
	if(t<=0x7E)
	{
		//00-7E     0xxxxxxx
		uch[0]=LOBYTE(t);
		return 1;
	}
	else if(t<0x800)
	{	
		//80-7FF    110xxxxx 10xxxxxx
        ch=LOBYTE(t&0x003F);
		ch|=0x80;
		uch[1]=ch;

		ch=LOBYTE((t>>6)&0x1F);
        ch|=0xC0;
		uch[0]=ch;
		
		return 2;
	}
    else
	{     
		//800-FFFF  1110xxxx 10xxxxxx 10xxxxxx
		ch=LOBYTE(t&0x3F);
		ch|=0x80;
		uch[2]=ch;
        
		ch=LOBYTE((t>>6)&0x3F);
		ch|=0x80;
		uch[1]=ch;

		ch=LOBYTE((t>>12)&0x0F);
		ch|=0xE0;
		uch[0]=ch;
		return 3;
	}

}

void CISNConversion::AnsiToUtf8(LPCTSTR filename, UINT CodePage)
{
	    UINT  wLen,i;//widebyte char number/length
		DWORD nLen;
    	CFile fp;
		int nUTF8;
      
		if( !fp.Open(filename,CFile::modeReadWrite) )	
		{
			CString msg;
			msg.Format("Open the file : \'%s\' error!",filename);
			AfxMessageBox(msg);
			return;
		}
		nLen=fp.GetLength();

        char* rbuf=new char[nLen];
		wchar_t* wbuf=new wchar_t[nLen];
		if(rbuf==NULL || wbuf==NULL)
		{	AfxMessageBox("alloc memory error!");
			return;
		}
        // Convert ANSI or MultiByte to UNICODE
		try
		{
			fp.Read(rbuf,nLen);
			wLen=MultiByteToWideChar(CodePage,0,rbuf,nLen,wbuf,nLen);		
		}
		catch(CFileException* pEx)
		{
			pEx->ReportError();
			delete rbuf;
		    delete wbuf;
			fp.Close();
			return;
		}
		delete rbuf;

        // Convert UNICODE to UTF-8
		fp.SeekToBegin();
       
		char uch[3];
        i=0;
		while(i<wLen)
		{
			nUTF8=UnicodeToUtf8(wbuf[i],uch);
			fp.Write(uch,nUTF8);
			i++;
		}
		fp.Close();
		delete wbuf;
}