NGWS SDK Documentation  

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Compiler Error C2440

'conversion' : cannot convert from 'type1' to 'type2'

The compiler cannot cast from ‘type1’ to ‘type2’. Several situations can generate C2440.

class CMyClass {
public:
   explicit CMyClass( int iBar)
      throw()   {
      }
   };

void main() {

   CMyClass myclass = 2; // conversion required
   // try the following
   // CMyClass myclass(2);
   // or
   // CMyClass myclass = (CMyClass)2;

   int *i;
   float j;
   j = (float)i; // cannot cast from pointer to int to float
}

If you encounter this error on code that compiled with an earlier version of Visual C++, see Technote: Improved Conformance to ANSI C++.