Can I use conditional compilation to add missing types?

问题

The following:

#If False Then
    Public Type Long
        LoPart As Integer
        HiPart As Integer
    End Type
#End If

Throws a compiler error "Expected: Identifier" when run on my VBA7 32-bit office (Excel). This is because Long is a protected type. However, it was my understanding that the compiler should not see what's in the block (since the condition is always false).

Why do I still get the error?

I can still write and run code using Long variables - my type doesn't show up in intellisense. But the line

Public Type Long

remains red in the editor indicating some problem. Is it something to worry about?

---

NB, I'm trying to write a replacement for LongPtr for pre VBA7 systems where it didn't exist - in the off-chance that someone manages to run VBA6 in 64 bit office - I bet there's a way...

来源：https://stackoverflow.com/questions/56827029/can-i-use-conditional-compilation-to-add-missing-types