libxl 的使用，读取时间格式

最近开发使用到 libxl，用的是3.8.0 破解版。

具体过程：

1、将lib.dll放在exe同目录下，在代码中引用 libxl.lib

  #pragma comment(lib, ".\Lib\libxl.lib")

2、包含头文件 libxl.h

3、实例

//m_strFilePath为excel文件的完整路径
CString ext = ::PathFindExtension(m_strFilePath);
	if(ext.CompareNoCase(L".xlsx") == 0)
		book = xlCreateXMLBook();  //针对.xlsx
	else
		book = xlCreateBook();　　//针对.xls

	if(!book)
	{
		return;
	}

	const wchar_t * x = L"Halil Kural";
	const wchar_t * y = L"windows-2723210a07c4e90162b26966a8jcdboe";
	book->setKey(x, y);  //设置key，即破解^_^

	if(!book->load(m_strFilePath))
	{
		return;
	}

	int sheetCount = book->sheetCount(); //工作表总数量
	for (int index = 0; index < sheetCount; ++index)
	{
		Sheet *sheet =book->getSheet(index++);
		if(!sheet)
			continue;
		int firstRow = sheet->firstRow(); //有数据的第一行行号
		int lastRow = sheet->lastRow();　　//有数据的最后一行行号
		int firstCol = sheet->firstCol(); //有数据的第一列列号
		int lastCol = sheet->lastCol();   //有数据的最后一列列号

		//找出表头（测试数据）
		map<int,wstring> mapColNames;
		for(int c = firstCol; c < lastCol; ++c)
		{
			const wchar_t* str = sheet->readStr(firstRow, c);
			if(!str)
				continue;
			mapColNames[c] = str;
		}

		//确定每个表头代表的意义（测试数据）
		map<int,eFIELD> mapColTypes;
		for (auto it = mapColNames.begin(); it != mapColNames.end(); ++it)
		{
			eFIELD e = GetFieldTypeByName(it->second.c_str());
			mapColTypes[it->first] = e;
		}

		//逐行读取数据
		for (int row = firstRow+1; row < lastRow; ++row)
		{
			for(int c = firstCol; c < lastCol; ++c)
			{
                                        CString strValue;
                                        CellType t = sheet->cellType(row, c);
					if(t == CELLTYPE_NUMBER)
					{
						double db = sheet->readNum(row, c);//test
						LONG64 number = (LONG64)db;
						if(number > 0)
							strValue.Format(L"%I64d", number);
					}
                                        else
                                             const wchar_t* s = sheet->readStr(row, c); //读取内容 
                         }
　　　　　　　　 }
	}

　　

4、读取时间格式的数据

CString strValue;
                bool bDate = sheet->isDate(row, col);
                if (bDate)
                {
                    double db = sheet->readNum(row, col);
                    int year=0, month=0, day=0;
                    bool b = book->dateUnpack(db, &year, &month, &day);

    //将读取的时间 转换为时间戳
                    unsigned __int64 ftNow;
                    SYSTEMTIME time;
                    ZeroMemory(&time, sizeof(SYSTEMTIME)),
                    time.wYear = year;
                    time.wMonth = month;
                    time.wDay = day;
                    SystemTimeToFileTime(&time,(LPFILETIME)&ftNow);
                    __int64 timeStamp =  (__int64)((ftNow-0x019db1ded53e8000)/10000);//毫秒
                    strValue.Format(L"%I64d", timeStamp);
                }