[Gambas-user] Working with .so library

Gianluigi bagonergi at gmail.com
Fri Jul 26 10:59:11 CEST 2019


..and here too:
https://www.gambas-it.org/wiki/index.php?title=Guide_della_comunit%C3%A0#Puntatori

Il giorno ven 26 lug 2019 alle ore 10:50 Gianluigi <bagonergi at gmail.com> ha
scritto:

> Take a look here:
> http://www.gambas-it.org/smf/index.php?topic=7165.msg46326#msg46326
>
> Regards
> Gianluigi
>
> Il giorno ven 26 lug 2019 alle ore 02:58 Admin <admin at allunix.ru> ha
> scritto:
>
>> BTW, can Gambas point to an array? I mean, there's datatype in C called
>> bytearray, and some of my .so library's procedures return or request a
>> bytearray variable. Gambas can declare a Byte[] but can't VarPtr to it.
>> So that's a no, right? Just making sure, it's not that important, but
>> maybe there's a way?
>>
>> 26.06.2019 8:13, Admin пишет:
>> > So, I guess that's a no. It's kinda sad, but ok, minor issue.
>> >
>> > 25.06.2019 15:21, Admin пишет:
>> >> Ok, this question I have for a very long time now:
>> >> Sometimes I need to recieve a string variable from a library.
>> >> Usually it asks me to provide a pointer to a string where it would
>> >> store it's output.
>> >> Problem is output is usually in WCHAR_T, while the string is always
>> >> in UTF-8.
>> >> When I provide my strings to a library - it's not a problem, i just
>> >> use Conv(MyString, "UTF-8", "WCHAR_T") and it's all ok.
>> >> But when I recieve a string from a library I rearly even know the
>> >> lenght of the output I expect. But even if I do, that would be a
>> >> lenght of a WCAHR_T string, and the size of UTF string would be
>> >> defferent.
>> >> So in most cases if I recieve a string like this:
>> >>
>> >> libfptr_get_param_str(fptr, LIBFPTR_PARAM_MODEL_NAME,
>> >> VarPtr(KKMmodel), stringsize)
>> >>
>> >> and then try to
>> >>
>> >> message(Conv(KKMmodel, "WCHAR_T", "UTF-8"))
>> >>
>> >> I will get a "bad string conversion".
>> >>
>> >> And I think it's totally fair, because, ok, I know that the string
>> >> will be 18 chars long, but if I make KKMmodel declared as String and
>> >> 18 chars long - is it even relevant?  It would be 18 UTF8 chars long,
>> >> which has nothing to do with the lenght of WCHAR_T string.
>> >>
>> >> So, is there a way to correctly recieve WCHAR_T strings through
>> >> pointers in Gambas?
>> >>
>> >> 25.06.2019 15:07, Tobias Boege пишет:
>> >>> On Tue, 25 Jun 2019, David Silverwood via User wrote:
>> >>>>> On Tuesday, June 25, 2019, 09:54:07 AM GMT+2, Benoît Minisini
>> >>>>> <g4mba5 at gmail.com> wrote:
>> >>>>>     Le 25/06/2019 à 05:56, Admin a écrit :
>> >>>>>> Ok, answering my own question, it's easier then I thought. Gambas
>> >>>>>> actually allows the same enum declaration as C does, I mean I can
>> >>>>>> use
>> >>>>>> multiple strings despite it's never mentioned in documentation.
>> >>>>>> So it's
>> >>>>>> basically .h file copy-paste process, nothing more.
>> >>>>>>
>> >>>>> What is not mentioned in http://gambaswiki.org/lang/enumdecl ?
>> >>>>   i get a 404 error when trying to access that page?
>> >>> There's always a /wiki after the .org, which Benoît forgot.
>> >>>
>> >>
>> >>
>> >> ----[ Gambas mailing-list is hosted by https://www.hostsharing.net
>> ]----
>> >>
>> >>
>> >>
>> >
>> >
>> > ----[ Gambas mailing-list is hosted by https://www.hostsharing.net
>> ]----
>> >
>> >
>> >
>>
>>
>> ----[ Gambas mailing-list is hosted by https://www.hostsharing.net ]----
>>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.gambas-basic.org/pipermail/user/attachments/20190726/184bc9b4/attachment-0001.html>


More information about the User mailing list