Re: libusbK 64bit OS struct size

On 4/17/2014 4:22 AM, Ekkehard wrote:
> We are upon to use libusK with native 64 Delphi application, thus updating
> the pascal "bindings".
> My question is about the sizes of the structs
> in libusbk.h is defined
> typedef struct _KUSB_DRIVER_API
> {
> [...]
>
> 	//! fixed structure padding.
> 	UCHAR z_F_i_x_e_d[512 - sizeof(KUSB_DRIVER_API_INFO) -  sizeof(UINT_PTR) *
> KUSB_FNID_COUNT];
>
> } KUSB_DRIVER_API;
> typedef KUSB_DRIVER_API* PKUSB_DRIVER_API;
> C_ASSERT(sizeof(KUSB_DRIVER_API) == 512);
>
> My question is
> - does the 512 bytes overall size is the same in 32bit and 64bit version

Yes.

> - is UCHAR 8bit or 16bit

8bit always.

String chars are also 8bit (UTF-8 encoded)

> - is sizeof(UINT_PTR) 8 bytes or 4 bytes

8 bytes in 64bit
4 bytes in 32bit

Regards,
Travis

>
> I am asking sinze the struct size differs, while compiled with 64 bit Delphi
> compiler.
>
> Greetings Ekkehard
>
>
>
>
> --
> View this message in context: http://libusb.6.n5.nabble.com/libusbK-64bit-OS-struct-size-tp5713177.html
> Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com.
>
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