[Python-Dev] String conversion issues implementing new curses module method addchstr, etc. (original) (raw)

Heracles steve at integrityintegrators.net
Thu Feb 26 15:27:13 CET 2009

Funny thing happens when you work in a managed language like .Net or Java for too long. You tend to expect that the language will catch any invalid casts and prevent you from compiling the code.

Guess I need to spend more time doing C coding to get back in to it.

Thank you, this is most helpful, and i will heed your advice about the cast.

Cheers!

Ulrich Eckhardt wrote: >> On Wednesday 25 February 2009, Heracles wrote: >> addchstr((chtype*)PyStringAsString(pS)) >> You are effectively disabling the well-deserved warnings with the cast > here. > Don't do that. >>> Now the thing is that when I make calls from python like so: >>>> _curses.addchstr(5,10, "@ < Row 5, Col 10")_ > [...] >> What prints out on the screen is gobledygook not the strings you would >> expect below. > [...] >> Any thoughts on how to correctly convert the PyStringObject arguments to >> chtype* pointers so that the ncurses library will be able to understand >> them? >> In this case, I suggest man ncurses: >> | cchart > | corresponds to chtype. However it is a structure, because more > | data is stored than can fit into an integer. The characters are > | large enough to require a full integer value - and there may > | be more than one character per cell. The video attributes and > | color are stored in separate fields of the structure. >> I'm pretty sure that you can find functions to generate such a string both > from a char-string (with whatever encoding) or a wchart-string (using > Unicode probably) in the curses library. >> Uli >> -- > Sator Laser GmbH > Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932 >> ************************************************************************************** > Sator Laser GmbH, Fangdieckstraße 75a, 22547 Hamburg, Deutschland > Geschäftsführer: Thorsten Föcking, Amtsgericht Hamburg HR B62 932 > ************************************************************************************** > Visit our website at <http://www.satorlaser.de/> > ************************************************************************************** > Diese E-Mail einschließlich sämtlicher Anhänge ist nur für den Adressaten > bestimmt und kann vertrauliche Informationen enthalten. Bitte > benachrichtigen Sie den Absender umgehend, falls Sie nicht der > beabsichtigte Empfänger sein sollten. Die E-Mail ist in diesem Fall zu > löschen und darf weder gelesen, weitergeleitet, veröffentlicht oder > anderweitig benutzt werden. > E-Mails können durch Dritte gelesen werden und Viren sowie > nichtautorisierte Änderungen enthalten. Sator Laser GmbH ist für diese > Folgen nicht verantwortlich. > ************************************************************************************** >> _________________________ > Python-Dev mailing list > Python-Dev at python.org > http://mail.python.org/mailman/listinfo/python-dev > Unsubscribe: > http://mail.python.org/mailman/options/python-dev/lists%40nabble.com >>

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