Force to reimplement a static function in inherit classes

c++

Solution

What you have here is classic factory pattern. You want to create an interface named `IPluginFactory` which would have two methods - `match` and `create` (or, optionally, combine them both in a single method). Then each of your plugin DLLs would have a class that implements this interface.

    Parent obj;
    IPluginFactory *one = new OneFactory();
    IPluginFactory *two = new TwoFactory();

    if (one->match(argv[1]))
        obj = one->createObj();
    else if (two->match(argv[1]))
        obj = two->createObj();

Problem

I have a program in C++ with plugins (dynamic libs). In the main program, I want to execute a static function to check if i can create a object of this type. An example without dynamic libs (aren't neccesary to understand the problem): ``` #include "libs/parent.h" #include "libs/one.h" #include "libs/two.h" int main(int argc, char * argv[]) { Parent* obj; if (One::match(argv[1])) obj = new One(); else if (Two::match(argv[1])) obj = new Two(); } ``` Now, i have a interface class named Parent. All plugins inherit from this class. Ideally, I have a virtual static function in Parent named match, and all the plugins need to reimplement this function. The problem with this code is that i can't do a static virtual function in C++, so i don't know how to solve the problem. Sorry for mi english, i did my best

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