Selective member import/export using dllexport and default constructor

We can only export some methods in the class(https://msdn.microsoft.com/es-es/library/8d7d1303-b9e9-47ca-96cc-67bf444a08a9%28v=vs.100%29)
What if we export only some methods in the class and not exported the default constructor(Will it get generated by the compiler in external app which use this dll?).The class may have some private data member as well which are not exposed in the published
header file(Which we distribute with DLL).
How the memory gets allocated to those private data members which are not exposed as the default constructor is not exported? 
Niranjan

We can only export some methods in the class(https://msdn.microsoft.com/es-es/library/8d7d1303-b9e9-47ca-96cc-67bf444a08a9%28v=vs.100%29)
What if we export only some methods in the class and not exported the default constructor(Will it get generated by the compiler in external app which use this dll?).The class may have some private data member as well which are not exposed in the published
header file(Which we distribute with DLL).
How the memory gets allocated to those private data members which are not exposed as the default constructor is not exported? 
Niranjan

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