Any way to use base constructor in derived class? - Stack Overflow
2016年12月8日 · In C++11 and later only, you can use a using statement to inherit the base class's constructors, eg: class CDerived : public CBase { public: using CBase::CBase; }; Live …
How to call virtual function of derived class through base class …
A base class pointer (CBase*) can point to an object of a type derived from CBase (like CChild). That's not what you've done, though: your base class pointer points to a base class object. If …
abc interface inheritance and re-exposing methods in base class
2011年3月16日 · If I understand correctly you want to make ibase a virtual base class of iderived and cbase. This was there is only one instance of each of your interface classes in the class …
C++ STL container for template base class - Stack Overflow
2011年2月7日 · Since you use T in CBase's interface, it appears you want to keep CBase as a template, but be aware that in that case, there is no common base class between classes …
using base pointer to use derived objects functions
2015年2月19日 · Plus a few other bits of housekeeping. Delete the pBase object and since you are deleting a derived class (cDerived) using a pointer to a base class (cBase) you must …
C++ converting reference to base pointer to reference to derived ...
2014年6月9日 · So how do I convert the reference to pointer to cBase returned by the operator[] of cBaseArray to refernce to pointer to cDerived that can be returned by the operator[] of …
Why does returning a virtual class *by value* in C++ alter the v …
2020年8月6日 · In the following code I return a derived class CDerived by-value from a function returning its base class, CBase. For example purposes, CDerived contains a _number field, …
How to check if C++ abstract method is defined at runtime
2010年11月30日 · You don't need to check if the method is implemented at runtime (you can't in this case anyway) because CBase must implement do1 () to satisfy inheriting from ABase.
How to make an ATL COM class derived from a base class?
2015年12月22日 · Just a suggestion - if your COM object does not need to do anything special with COM related stuff then you can implement code such that the real logic that your base …
ambiguous access when calling a decorated base class
2009年10月22日 · I have a class that can be decorated with a set of add-on templates to provide additional functionality. Each add-on needs to be able to call the base class and the user …