c wrapper multiple inheritance

main.cpp

#include <iostream>

struct AuxData
{
   virtual ~AuxData() = default;

   virtual void PrintAuxData()
   {
      std::cout << "AuxData a: " << a << " b: " << b << std::endl;
   }
   int a = 1;
   int b = 2;
};

struct IdData
{
   virtual ~IdData() = default;
   virtual void PrintStringData()
   {
      std::cout << "IdData c: " << c << std::endl;
   }

   int c = 3;
};

struct PlatformPart : IdData, AuxData
{
   virtual void PrintPlatformPart()
   {
      std::cout << "PlatformPart d: " << d << std::endl;
   }

   int d = 4;
};

void* CreateAuxData()
{
   return new AuxData;
}

void* CreateIdData()
{
   return new IdData;
}

void* CreatePlatformPart()
{
   return new PlatformPart;
}

void PrintAuxData(void* aVal)
{
   static_cast<AuxData*>(aVal)->PrintAuxData();
}

void PrintIdData(void* aVal)
{
   static_cast<IdData*>(aVal)->PrintStringData();
}

void PrintPlatformPart(void* aVal)
{
   static_cast<PlatformPart*>(aVal)->PrintPlatformPart();
}

void* PlatformPartToAuxData(void* aVal)
{
   return static_cast<AuxData*>(static_cast<PlatformPart*>(aVal));
}

void* PlatformPartToIdData(void* aVal)
{
   return static_cast<IdData*>(static_cast<PlatformPart*>(aVal));
}


int main()
{
   void* partPtrC = CreatePlatformPart();
   PlatformPart* partPtr = static_cast<PlatformPart*>(partPtrC);
   AuxData* auxPtr = partPtr;
   IdData* idPtr = partPtr;
   std::cout << "partPtr: " << partPtr << std::endl;
   std::cout << "auxPtr: " << auxPtr << std::endl;
   std::cout << "idPtr: " << idPtr << std::endl;
   std::cout << "bad PrintAuxData from PlatformPart*" << std::endl;
   PrintAuxData(partPtrC);
   std::cout << "working PrintAuxData from PlatformPart*" << std::endl;
   PrintAuxData(PlatformPartToAuxData(partPtrC));
   // PrintIdData(CreatePlatformPart());
}