On 12/09/12 20:11, Johann Glaser wrote:
Hi!
I'm working on a header translation for LibUSB and its fork libusbx.
They define several data types as C enums (for examples, see
http://libusbx.sourceforge.net/api-1.0/group__desc.html ).
They excessively use direct assignment of enum values, and even use one
value multiple times (e.g. LIBUSB_CLASS_PTP = 6, LIBUSB_CLASS_IMAGE =
6).
Can I translate this 1:1, i.e., define an Enum in Pascal and just ignore
the compiler warnings about reused values?
Or should I rather define all these types as Integer and define
constants for all values?
One more question: In some C structs and function parameters and return
values these enums are used too. How can I assure that the same memory
allocation is used?
A translation of libusb 0.1.12 is available in the fpc contributed units
(http://www.freepascal.org/contrib/contribs.html). Maybe you can use
that as a reference.
Stephano
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