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error LNK2001 - GetruntimeClass error

error LNK2001 - GetruntimeClass error

error LNK2001 - GetruntimeClass error

(OP)
I have read the VC help file for the reason for this error and also googled the error and still have not found any helpful understanding for this newbie in order to correct this issue.

My programming was working fine until I started serializing the data. The following error message is what i am receiving and was hoping maybe someone can point me in a direction for looking for the problem:
Basically I have 6 classes that I have added a serialize function member, and i am receiving an error message for each.

[source]
Elements.obj : error LNK2001: unresolved external symbol "public: virtual struct CRuntimeClass * __thiscall CCurve::GetRuntimeClass(void)const " (?GetRuntimeClass@CCurve@@UBEPAUCRuntimeClass@@XZ)
[/source]

Thanks in advance

RE: error LNK2001 - GetruntimeClass error

Unresolved external simply means that you declared but never implemented that function. Sometimes you just forget, sometimes you make a typo with the parameters or the return value or the const and so the definition doesn't match up with the declaration, sometimes you forget to add the cpp file that you defined the function in to the project.

Look for the implementation of that function and make sure it is correct.

By the way, I think this was mentioned before, the tags are code tags, not source tags. smile

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