Your assumption is incorrect. The Transparent solution simply creates an
Enhanced Metafile(EMF) from the selected Image. The Example Form contains
Buttons to both Load and Save images. Technically, you could convert all of
your Images to EMF's and save them to disk. But this in usually not
necessary. Simply use my solution to convert your original Images you load
from disk at runtime.

Have you looked at the code behind the sample form?