c++ Programming Glossary: upcast
When implementing several COM interfaces at once how do I upcast to IUnknown? http://stackoverflow.com/questions/1742329/when-implementing-several-com-interfaces-at-once-how-do-i-upcast-to-iunknown implementing several COM interfaces at once how do I upcast to IUnknown Suppose my COM object implements two or more COM.. both base interfaces are derived from IUnknown I cannot upcast implicitly such upcast would be umbiguous. To upcast explicitly.. are derived from IUnknown I cannot upcast implicitly such upcast would be umbiguous. To upcast explicitly I need to use either..
Why exactly do I need an explicit upcast when implementing QueryInterface() in an object with multiple interfaces() http://stackoverflow.com/questions/1742848/why-exactly-do-i-need-an-explicit-upcast-when-implementing-queryinterface-in-a exactly do I need an explicit upcast when implementing QueryInterface in an object with multiple.. when I implement QueryInterface for IUnknown I explicitly upcast this pointer to one of the interfaces if iid __uuidof IUnknown..
Is it safe to “upcast” a method pointer and use it with base class pointer? http://stackoverflow.com/questions/4272909/is-it-safe-to-upcast-a-method-pointer-and-use-it-with-base-class-pointer it safe to &ldquo upcast&rdquo a method pointer and use it with base class pointer Let's.. points to the original member Clause 5.2.9 9 says you can upcast only if you can also downcast as specified in § 4.11 An rvalue.. once in D's inheritance diagram. The danger inherent in upcasting method pointers is that you could call mp on an object whose..
Pointer to member conversion http://stackoverflow.com/questions/4295117/pointer-to-member-conversion portion of the standard says it is perfectly legal to upcast member pointers using an explicit static_cast which is exactly..
dynamic_cast of “this” inside constructor http://stackoverflow.com/questions/6299266/dynamic-cast-of-this-inside-constructor A D A struct X X A struct E C D X E D this undefined upcast from E to A might use path E D A but D is not constructed..
C-Style upcast and downcast involving private inheritance http://stackoverflow.com/questions/844816/c-style-upcast-and-downcast-involving-private-inheritance Style upcast and downcast involving private inheritance Consider the following..
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