[C++ Error] Unit1.h(13): E2246 HLib is not abstract public single inheritance class
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C++Builder支持多重继承,但要求是单根继承。即HLib必须是从TObject继承的
我在cb的TForm1象要再继承这个HLib,
class TForm1 : public TForm , public HLib
结果编译的时候出现
[C++ Error] Unit1.h(13): E2246 HLib is not abstract public single inheritance class hierarchy with no data
[C++ Error] Unit1.h(21): E2113 Virtual function '_fastcall TForm1::~TForm1()' conflicts with base class 'HLib'