Bug 839 – QTest::touchEvent causes Python crash.

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Bug 839 - QTest::touchEvent causes Python crash.

Summary:

QTest::touchEvent causes Python crash.

Status:	CLOSED FIXED

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

Importance:	P2 normal
Assigned To:	renato filho

URL:

Depends on:
Blocks:
	Show dependency tree / graph

Reported:	2011-04-26 16:47 EEST by Anton Chikin
Modified:	2011-05-26 17:04 EEST (History)
CC List:	9 users (show)

See Also:

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Description Anton Chikin 2011-04-26 16:47:17 EEST

Hi,

Sorry for filing this bug here - there is no particular category for QtTest.
While using new multitouch test functions from QtTest, I've come across the
issue:

QtTest.QTest.touchEvent(self).press(0, QPoint(100,100))

causes Python crash with core dump.

Firstly I've come across this issue in PyQt and contacted Phil about it. Here
is his answer:
"It looks like QTouchEventSequence has a really dumb API which means it's
unusable in anything other that C++ code. You have to use the instance
immediately - you can't make a copy on the heap to pass around and use
later."

Then I've made the test sample using PySide, and the same thing happend.

Thank you!

Comment 1 Hugo Parente Lima 2011-04-26 20:45:00 EEST

Thanks very much for the info, despite of Phil's declaration I think this
problem needs further investigation by us, so prioritizing the crash as P2.

Comment 2 renato filho 2011-05-03 01:21:38 EEST

fixed on pyside commit:
commit 49ba9c9cd5010e4a4d746a8f5771bf95efb0e14d
Author: Renato Filho <renato.filho@openbossa.org>
Date:   Fri Apr 29 19:15:08 2011 -0300

Comment 3 Anton Chikin 2011-05-03 14:01:23 EEST

Many thanks, Renato!
One useful footnote:
A widget does not receive touch events by default.
self.setAttribute(QtCore.Qt.WA_AcceptTouchEvents) must be set.

Comment 4 renato filho 2011-05-26 17:04:11 EEST

PySide release 1.0.3