C++ CLI property overriding and renaming by Richard78

Hello,

I'm using Visual Studio 2010 and .NET4.0.

I have the following classes defined in a dll (simplification of my real code):

namespace test {

interface class I
{
property bool IsOk
{
bool get();
}
};

public ref class A abstract : I
{
private:
virtual property bool IsFine
{
bool get() sealed = I::IsOk::get
{
    return false;
}
}
};


//OK
public ref class B : public A
{

};

}

The code compiles. But if I define a new class deriving from A in another dll or exe



ref class C : public test::A
{

};



I get some compilation warnings and errors which do not make any senses to me:

    * error C3766: 'C' must provide an implementation for the interface method 'bool test::I::IsOk::get(void)' see declaration of 'test::I::IsOk::get'

    * warning C4570: 'C' : is not explicitly declared as abstract but has abstract functions 'bool test::I::IsOk::get(void)' : is abstract see declaration of 'test::I::IsOk::get'

    * error C2259: 'C' : cannot instantiate abstract class due to following members: 'bool test::I::IsOk::get(void)' : is abstract deleteme3.cpp(36) : see declaration of 'test::I::IsOk::get'



There are no differences between the classes 'B' and 'C'.

If now I define the same class 'C' in a C# project, I have no compilation error or warnings.



I have checked the IL for the class A:

.method private hidebysig newslot specialname virtual final
    instance bool
    marshal( unsigned int8)
    get_IsFine() cil managed
{
.override test.I::get_IsOk
// Code size    4 (0x4)
.maxstack 1
.locals ([0] bool V_0)
IL_0000: ldc.i4.0
IL_0001: stloc.0
IL_0002: ldloc.0
IL_0003: ret
} // end of method A::get_IsFine

I can see the override information. I wonder if the compiler simply ignore this information when it reads my reference, or do I miss something in my code?



Regards,

Richard