debug输出至于文件函数

int YoungWriteLog(const wchar_t* format,...)
{
	if( g_FileLog == NULL )
	{
		return ERR_OPEN;
	}
	wstring wstrTmp;
	wchar_t wszTmp[256] = {0};
	char szTmp[256]={0};
	time_t timer;
	tm* tblock;
	timer = time(NULL);
	tblock = localtime(&timer);
	strftime(szTmp,256,"%c",tblock);
	mbstowcs(wszTmp,szTmp,256);
	wstrTmp.assign(wszTmp);
	
	sprintf(szTmp, "  LINE=%d FILE=%s : ",__LINE__,__FILE__);
	mbstowcs(wszTmp,szTmp,256);
	wstrTmp.append(wszTmp);
	//wprintf(L"%s",wstrTmp.c_str());
	//fwrite(wstrTmp.data(),wstrTmp.length()*2+2,1,g_FileLog);
	va_list arg_ptr;
	va_start(arg_ptr,format);	
	vswprintf(wszTmp,format,arg_ptr);
	va_end(arg_ptr);
	wstrTmp.append(wszTmp);
	fwrite(wstrTmp.data(),wstrTmp.length()*2,1,g_FileLog);
	fwrite(L"\r\n",4,1,g_FileLog);
}

调用YoungWriteLog(L"%s%d",L"debug",123);

输出如下

10/23/12 15:21:52 LINE=29 FILE=d:\young\younglog\younglog\younglog.cpp : debug123