class BaseClass
{
enum
{
Type = -1,
ParentType = -1,
};
virtual unsigned int GetType() { return Type; }
virtual unsigned int GetParentType() { return ParentType; }
};
class ClassA : public BaseClass
{
enum
{
Type = 1,
ParentType = BaseClass::Type,
};
virtual unsigned int GetType() { return Type; }
virtual unsigned int GetParentType() { return ParentType; }
};
class ClassB : public ClassA
{
enum
{
Type = 2,
ParentType = ClassA::Type,
};
virtual unsigned int GetType() { return Type; }
virtual unsigned int GetParentType() { return ParentType; }
};
custom RTTI - using the preprocessor
Author
i have my own run time type info. system which goes something like this:
now, i want to change this to use macros, and i want the preprocessor to generate the Type = xxx
I saw a thread on here once about a preprocessor macro that would increment a value each time it was used, but i forgot what it was.
__COUNTER__ is almost certainly reset for each compilation unit though, so you'll probably need to define all of your IDs in one unit (Or header and make sure that __COUNTER__ isn't used elsewhere).
Author
i assume __COUNTER__ is microsoft specific, better than nothing for now though :) . Would also be nice if there was a general cross platform solution.
Can you explain further how this typelists' can be used for RTTI?
Can you explain further how this typelists' can be used for RTTI?
This topic is closed to new replies.
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