Hey there,
If I have a compatible bitmap and device context associated with my window and I want the window to be realizable, do I have to recreate the bitmap and/or device context (when the window resizes)?
Or will they still function the same?

I assume I have to at least redo the bitmap size, otherwise it won't BitBlt() properly.

That's right. DCs don't have dimensions so you can't actually resize them.

So changing the size of a window doesn't make the device context any less compatible?
Okay, cool.