Why comdef.h is not working in Keil?

Dear Sir,

Does the comdef.h file not support in KEIL if we build code for stmf070xx type device?

With the reference, stackoverflow.com/.../where-can-i-get-comdef-h.
kindly tell me why we need this.

Take a look on this attached file.
It seems that coming from visual C++.
Does it depends on compiler ?

Regards
Hasan

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