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<p>Well, my first experiences working with QtCreator directly and
I'm seeing the same issues. I guess that points to bugs in Qt
itself and lets Phil Thompson at riverbankcomputing off of the
hook! If not here, where should I report the problem? Sample
program below followed by some error reports. The errors occur
when switching back and forth between 'British' and
'Myanmar-QWERTY' in system preferences in OS X.<br>
</p>
<p>Best regards,<br>
Timothy Grove</p>
<p><br>
</p>
<p><b>Test program:</b><br>
</p>
<pre wrap="">#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);
}
MainWindow::~MainWindow()
{
delete ui;
}
<font size="+1"><b>Errors reported in QtCreator console:</b></font>
Starting /Users/timothy/QtProjects/build-SooSL-Desktop_Qt_5_7_0_clang_64bit-Debug/SooSL.app/Contents/MacOS/SooSL...
2016-08-19 18:42:39.108 SooSL[1354:507] -[NSHIObject length]: unrecognized selector sent to instance 0x7fe153d1d560
2016-08-19 18:42:39.108 SooSL[1354:507] -[NSHIObject length]: unrecognized selector sent to instance 0x7fe153d1d560
2016-08-19 18:42:39.110 SooSL[1354:507] (
0 CoreFoundation 0x00007fff879d225c __exceptionPreprocess + 172
1 libobjc.A.dylib 0x00007fff8d27de75 objc_exception_throw + 43
2 CoreFoundation 0x00007fff879d512d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205
3 CoreFoundation 0x00007fff87930272 ___forwarding___ + 1010
4 CoreFoundation 0x00007fff8792fdf8 _CF_forwarding_prep_0 + 120
5 QtCore 0x000000010a2bb876 _ZN9QCFString9toQStringEPK10__CFString + 54
6 libqcocoa.dylib 0x000000010c741ac7 _ZN18QCocoaInputContext12updateLocaleEv + 87
7 CoreFoundation 0x00007fff879a0e0c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
8 CoreFoundation 0x00007fff8789482d _CFXNotificationPost + 2893
9 Foundation 0x00007fff89f62e4a -[NSNotificationCenter postNotificationName:object:userInfo:] + 68
10 CoreFoundation 0x00007fff879a0e0c __CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER__ + 12
11 CoreFoundation 0x00007fff87962f79 ____CFXNotificationPostToken_block_invoke + 137
12 CoreFoundation 0x00007fff8790348c __CFRUNLOOP_IS_CALLING_OUT_TO_A_BLOCK__ + 12
13 CoreFoundation 0x00007fff878f4ae5 __CFRunLoopDoBlocks + 341
14 CoreFoundation 0x00007fff878f486e __CFRunLoopRun + 1982
15 CoreFoundation 0x00007fff878f3e75 CFRunLoopRunSpecific + 309
16 HIToolbox 0x00007fff8aff3a0d RunCurrentEventLoopInMode + 226
17 HIToolbox 0x00007fff8aff37b7 ReceiveNextEventCommon + 479
18 HIToolbox 0x00007fff8aff35bc _BlockUntilNextEventMatchingListInModeWithFilter + 65
19 AppKit 0x00007fff9189d24e _DPSNextEvent + 1434
20 AppKit 0x00007fff9189c89b -[NSApplication nextEventMatchingMask:untilDate:inMode:dequeue:] + 122
21 AppKit 0x00007fff9189099c -[NSApplication run] + 553
22 libqcocoa.dylib 0x000000010c71c53f _ZN21QCocoaEventDispatcher13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE + 2191
23 QtCore 0x000000010a266eb1 _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE + 401
24 QtCore 0x000000010a26b115 _ZN16QCoreApplication4execEv + 341
25 SooSL 0x00000001093eb12b main + 91
26 libdyld.dylib 0x00007fff8ea2c5fd start + 1
)
</pre>
<div class="moz-cite-prefix">On 19/08/2016 16:48,
<a class="moz-txt-link-abbreviated" href="mailto:timur.kristof@gmail.com">timur.kristof@gmail.com</a> wrote:<br>
</div>
<blockquote cite="mid:n64tt2.oc5ylp.rtj4f1-qmf@smtp.gmail.com"
type="cite">
<pre wrap="">Can you create a simple example app without Python, to see if it really is Qt's fault?
(Just create an app with Qt Creator and run it. As far as I understand, you use QWidgets, right? If so, create an empty QWitgets project, run and see how it goes.)
On Fri Aug 19 13:33:58 2016 GMT+0200, Timothy W. Grove wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Changing the keyboard input source on OS X back and forth between
'British' and 'Myanmar-QWERTY' crashes my PyQt v5.7 application after
about three changes, usually corrupting an attached sqlite database as
well. 'Myanmar-QWERTY' is the only input source that I'm having trouble
with; all others that I've tested so far appear okay. The windows
version of the application also seems okay. My application is fairly
complex, but I'm seeing this issue even with an absolute minimal app
containing only one window. I'm not certain if the issue is with PyQt or
Qt or the input source itself, but it doesn't appear to be with python
as a Tkinter app worked okay.
Any answers would be great, but if anyone could suggest where to find a
solution that would also be helpful. This is a pretty obscure bug, but
finding a solution or work-around is important to the application I'm
developing. Thank you.
Best regards,
Timothy Grove
Test program:
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import QMainWindow
from PyQt5.QtWidgets import QTextEdit
from PyQt5.QtWidgets import QApplication
class MainWindow(QMainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
text = QTextEdit()
self.setCentralWidget(text)
if __name__ == "__main__":
app = QApplication(sys.argv)
mw = MainWindow()
mw.show()
sys.exit(app.exec_())
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</pre>
</blockquote>
<pre wrap="">
</pre>
</blockquote>
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