我的C ++非常生疏，我需要一点复习。我有一个名为awk的抽象类，如下所示：
IReaderFactory然后我有一个派生类，如下所示：
class IReaderFactory
{
public:
virtual std::map<t_ReaderID, IReader> GetReaders() = 0;
virtual void FreeReaders() = 0;
};
class DerivedFactory : IReaderFactory
{
public:
std::map<t_ReaderID, IReader> GetReaders();
void FreeReaders();
private:
std::map<t_ReaderID, DerivedReader> m_readers;
LPDerived_DEVICE* devices;
LPDerived_READER* readers;
bool areReadersOpen = false;
};
功能的实现如下
GetReaders请注意std::map<t_ReaderID, IReader> DerivedFactory::GetReaders()
{
int numDevices = 0, numReaders = 0;
numDevices = Derived_DiscoverDevices(&devices);
numReaders = Derived_DiscoverReaders(devices, numDevices, &readers);
for (int i = 0; i < numReaders; ++i)
{
t_ReaderID ID = reinterpret_cast<char *>(readers[i]->id->id);
DerivedReader o_Reader = DerivedReader(readers[i]);
m_readers.insert(std::pair <t_ReaderID, DerivedReader>(ID, o_Reader));
std::cout << ID << std::endl;
}
areReadersOpen = true;
return m_readers;
}
继承自DerivedReader
我的编译器发出以下错误：
IReader
我想在IntelliSense: no suitable user-defined conversion from "std::map<t_ReaderID, DerivedReader, std::less<t_ReaderID>, std::allocator<std::pair<const t_ReaderID, DerivedReader>>>" to "std::map<t_ReaderID, IReader, std::less<t_ReaderID>, std::allocator<std::pair<const t_ReaderID, IReader>>>" exists内将DerivedReader作为IReader返回，但不允许我这样做。任何帮助，将不胜感激。
修改
更新了使用std::map（Boost）
shared_ptr<IReader>