Is there a way to access the offset of a structure member programmatically?
curious why you need that as there may be a different way to achieve what it is you’re trying to do
Probably not worth it to explain. Just simplifies some things if I change my structure layout in the future.
I probably should be using a Class anyway.
If you’re not interfacing via a Declare, you probably should be using a class. Unless you’re writing a bytecode interpreter like I was / am in which case you might want to pass things around on the stack rather than the heap.
Ok, still curious, just for the sake of learning.
Sometimes I’ll have part of a structure that’s filled with bytes.
I’d like to read back that section sometimes as bytes, sometimes as characters.
Structure MyStruct ' No idea how to define in code, I just use the Structure editor
b(4) as byte
w(4) as UInt16
End Structure
Of course, I can just use MyStruct.StringValue(0, MyStruct.b.Size) function, but it needs to know where to start. It’s 0 in this case, but if I add another field ahead of “b”, then it’s wrong.
FYI, you can only create a Structure with the structure editor.
What is your use case here? A class really would give you more flexibility…
Yeah, you’re right. A class would be a better way to go, but I’d like to see what structures have to offer too. So many of the devices I interface with use structure-based packets.
You need to read this one then
https://www.great-white-software.com/blog/2019/07/16/c-unions/
define two dfferent structs and use them like overlays
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Great stuff. Been away from pointers for so long (VB.NET discourages their direct use), but I need to get back to them. They are hella useful.