This should be easy, but documentation on Windows printer driver functions is
hard to find. In the printer properties, General Tab, there is a group box
labeled “Paper available”. I’m guessing this is to support Bi-directional
communication with the printer and is intended to show all paper currently
loaded in the printer trays. It always seems to have only one entry,
“Letter”, which I’m also assuming is just the default value when the printer
/driver does not support Bi-di comm. Are my assumptions correct? Is there
a way to statically expand that list to include all the sizes a printer
supports even if the driver is not bi-directional?
Does anyone know of documentation which describes, completely, Windows
printer drivers?