Bug 645 – Error using short-circuit signals

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Bug 645 - Error using short-circuit signals

Summary:

Error using short-circuit signals

Status:	CLOSED DUPLICATE of bug 314

Product:	PySide
Classification:	Unclassified
Component:	QtCore
Version:	HEAD
Platform:	PC Linux

Importance:	P3 normal
Assigned To:	renato filho

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-01-27 10:16 EET by Mattia Barbon
Modified:	2011-02-02 16:12 EET (History)
CC List:	8 users (show)

See Also:

Attachments
Test program (483 bytes, text/x-python) 2011-01-27 10:16 EET, Mattia Barbon	Details
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Description Mattia Barbon 2011-01-27 10:16:18 EET

Created attachment 238 [details]
Test program

Hi,
using PyQt short-circuit signals (i.e. SIGNAL('foo'), without the signature
declaration) causes an error if the connected callable takes less parameters
than the emitted signal.

  With PyQt the attached program prints:

Y fun
Y meth
X fun 1
X meth 1
Y fun
Y meth

with PySide:

TypeError: sayY() takes no arguments (1 given)
Y meth
X fun 1
Error calling slot "say" 
TypeError: say() takes exactly 2 arguments (1 given)
TypeError: sayY() takes no arguments (1 given)
Y meth

Regards,
Mattia

Comment 1 renato filho 2011-01-27 10:24:49 EET

We recommend to use the new signal slot style to work with signals, this
functions was deprecated. Check the comments on bug #314.

Thanks

*** This bug has been marked as a duplicate of bug 314 ***

Comment 2 Mattia Barbon 2011-01-27 11:54:44 EET

(In reply to comment #1)
> We recommend to use the new signal slot style to work with signals, this
> functions was deprecated. Check the comments on bug #314.

  Maybe it would be better to document it in the PyQt/PySide differences page

http://developer.qt.nokia.com/wiki/Differences_Between_PySide_and_PyQt

?

I only checked open bugs (my bad), because I expected such a difference to be
either a to-be-fixed bug or documented there...

Regards,
Mattia

Comment 3 Hugo Parente Lima 2011-01-27 15:23:07 EET

(In reply to comment #2)
> (In reply to comment #1)
> > We recommend to use the new signal slot style to work with signals, this
> > functions was deprecated. Check the comments on bug #314.
> 
>   Maybe it would be better to document it in the PyQt/PySide differences page
> 
> http://developer.qt.nokia.com/wiki/Differences_Between_PySide_and_PyQt
> 
> ?

Yes, and hey, it's a wiki, you can do it :-D

Comment 4 renato filho 2011-02-02 16:12:40 EET

released