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Groups > comp.lang.python > #68642

Re: CallBack function in C Libraries.

From Mark H Harris <harrismh777@gmail.com>
Newsgroups comp.lang.python
Subject Re: CallBack function in C Libraries.
Date 2014-03-20 18:42 -0500
Organization Aioe.org NNTP Server
Message-ID <lgfucb$4q7$1@speranza.aioe.org> (permalink)
References <a9908cb7-3566-42a8-a468-8179ac1df7ab@googlegroups.com>

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On 3/20/14 6:16 PM, fiensproto@gmail.com wrote:

> def TheProc(c_int): fpgui.fpgFormWindowTitle(0, 'Boum')
> return 0

> TheProcF = CMPFUNC(TheProc)

> Traceback (most recent call last): File "_ctypes/callbacks.c",
> line 314, in 'calling callback function' TypeError: TheProc() takes
> exactly 1 argument (0 given)

> What is wrong ?

You defined TheProc(c_init) to take exactly 1 argument.

But when you called it, you didn't provide the argument.

So, you got a traceback indicating that TheProc() takes exactly one 
argument.

Give the function call its required argument and the error will go 
away... well, at least that one.


Cheers

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Thread

CallBack function in C Libraries. fiensproto@gmail.com - 2014-03-20 16:16 -0700
  Re: CallBack function in C Libraries. Mark H Harris <harrismh777@gmail.com> - 2014-03-20 18:42 -0500
    Re: CallBack function in C Libraries. fiensproto@gmail.com - 2014-03-20 16:56 -0700
      Re: CallBack function in C Libraries. 88888 Dihedral <dihedral88888@gmail.com> - 2014-03-20 17:04 -0700
      Re: CallBack function in C Libraries. "Rhodri James" <rhodri@wildebst.org.uk> - 2014-03-21 02:01 +0000
        Re: CallBack function in C Libraries. fiensproto@gmail.com - 2014-03-21 05:02 -0700
          Re: CallBack function in C Libraries. Mark H Harris <harrismh777@gmail.com> - 2014-03-21 11:50 -0500
            Re: CallBack function in C Libraries. fiensproto@gmail.com - 2014-03-21 17:22 -0700

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