trouble with the QSerialPortInfo::availablePorts()

[xiongxiongchuan]

i user the QT5.3 and visual studio 2010

foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
		QStringList list;
		description = info.description();
		manufacturer = info.manufacturer();
		list << info.portName()
			<< (!description.isEmpty() ? description : blankString)
			<< (!manufacturer.isEmpty() ? manufacturer : blankString)
			<< info.systemLocation()
			<< (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : blankString)
			<< (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : blankString);
 
		ui.serialPortInfoListBox->addItem(list.first(), list);
	}

foreach (const QSerialPortInfo &info, QSerialPortInfo::availablePorts()) {
		QStringList list;
		description = info.description();
		manufacturer = info.manufacturer();
		list << info.portName()
			<< (!description.isEmpty() ? description : blankString)
			<< (!manufacturer.isEmpty() ? manufacturer : blankString)
			<< info.systemLocation()
			<< (info.vendorIdentifier() ? QString::number(info.vendorIdentifier(), 16) : blankString)
			<< (info.productIdentifier() ? QString::number(info.productIdentifier(), 16) : blankString);

		ui.serialPortInfoListBox->addItem(list.first(), list);
	}

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i use QSerialPortInfo::availablePorts() to read avaiablePorts of my PC,but there is always something wrong with it ,the error information is :

SerialPortSettingDialog.obj : error LNK2019: æ— æ³•è§£æžçš„å¤–éƒ¨ç¬¦å· "__declspec(dllimport) public: static class QList<class QSerialPortInfo> __cdecl QSerialPortInfo::availablePorts(void)" (__imp_?availablePorts@QSerialPortInfo@@SA?AV?$QList@VQSerialPortInfo@@@@XZ)，该符号在函数 "private: void __thiscall SerialPortSettingDialog::fillPortsInfo(void)" (?fillPortsInfo@SerialPortSettingDialog@@AAEXXZ) ä¸*被引用

SerialPortSettingDialog.obj : error LNK2019: æ— æ³•è§£æžçš„å¤–éƒ¨ç¬¦å· "__declspec(dllimport) public: static class QList<class QSerialPortInfo> __cdecl QSerialPortInfo::availablePorts(void)" (__imp_?availablePorts@QSerialPortInfo@@SA?AV?$QList@VQSerialPortInfo@@@@XZ)，该符号在函数 "private: void __thiscall SerialPortSettingDialog::fillPortsInfo(void)" (?fillPortsInfo@SerialPortSettingDialog@@AAEXXZ) ä¸*被引用

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