C++/CLI : How to override Equal method of Object class

c++-cli, compiler-errors, compiler-warnings, method-declaration

Solution

The name of the method is not `Equal`, it's `Equals`. You shouldn't use `virtual` or `override` keywords in the implementation:

ref class Test {
public:
    virtual bool Equals(Object^ o) override; 
    virtual int GetHashCode() override;

};
bool Test::Equals(Object^ o) { // no "override" here 
    //...
}
int Test::GetHashCode() { // no "override" here
    //...
}

Problem

I am a newbie to C++/CLI and is having some problems trying to override the Equal method of the base Object class. I get the following compilation warning error for the following code. How should this be corrected? ``` Warning 1 warning C4490: 'override' : incorrect use of override specifier; 'Test::Sample::Equal' does not match a base ref class method c:\project\code\Sample.h 18 Error 2 error LNK2022: metadata operation failed (80131187) : Inconsistent method declarations in duplicated types (types: Test.Sample; methods: Equal): (0x06000002). Sample.obj ``` Edit 3: I changed "Equal" to "Equals", removed override keyword in source file but error 2 still stands. // Header File ``` public ref class Sample : public Object { public: int someVariable; virtual bool Equals(Object^ obj) override; virtual int GetHashCode() override; } ``` // Source File ``` bool Sample::Equals(Object^ obj) { if ( obj == nullptr || GetType() != obj->GetType() ) return false; Sample^ p = dynamic_cast<Sample^>(obj); return (someVariable == p->someVariable); } int Sample::GetHashCode() { return GetHashCode(); } ```

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