[PyQt] Python3 PyQt Resources bug

[Phil Thompson]

On Tue, 28 Jun 2011 21:53:21 +1000, Algis Kabaila <akabaila at pcug.org.au>
wrote:
> Hi,
> 
> Attempting to move to Python3 turned up a problem with resource
> compilation 
> and/or installation into program.  In my multi-partition box there are
two 
> kubuntu 11.04 "natty" os's.  Their names according to the desktop images
> are
> "Red Leaves" for Python3
> "Winter Swans" for Python2
> The same small script with tiny resource file runs ok on "Winter Swans",
> but 
> fails to compile resources into the program on "Red Leaves".
> 
> Here are the two compilation/running dialogs:
> 
> On the Red Leave
> ================
> pyhon 3.2
> sip  4.12.3
> qt   4.7.2
> pyqt 4.8.4
> 
> 
> menu.qrc
> --------
> <!DOCTYPE RCC><RCC version="1.0">
> <qresource>
> <file alias="hi.png">icons/address-book-new.png</file>
> <file alias="quit.png">icons/no.png</file>
> </qresource>
> </RCC>
> 
> compiling
> ---------
> ak at supremo:/dat/work/py2/menubar$ pyrcc4 menu.qrc -o qrc_menu.py
> ak at supremo:/dat/work/py2/menubar$ python3 menu_r.py
> Traceback (most recent call last):
>   File "menu_r.py", line 7, in <module>
>     import qrc_menu
>   File "/dat/work/py2/menubar/qrc_menu.py", line 269, in <module>
>     qInitResources()
>   File "/dat/work/py2/menubar/qrc_menu.py", line 264, in qInitResources
>     QtCore.qRegisterResourceData(0x01, qt_resource_struct,
>     qt_resource_name,
> qt_resource_data)
> TypeError: qRegisterResourceData(int, str, str, str): argument 2 has 
> unexpected type 'str'
> ak at supremo:
> 
> On the "Winter Swans"
> =====================
> OS ubuntu 10.10 upgraded to 11.04 "natty"
> python 2.7.1+
> pyqt  4.8.3
> qt    4.7.2
> 
> ak at supremo:/dat/work/py2/menubar$ pyrcc4 menu.qrc -o qrc_menu.py
> ak at supremo:/dat/work/py2/menubar$ python2.7 menu_r.py
> QInotifyFileSystemWatcherEngine::addPaths: inotify_add_watch failed: No
> such 
> file or directory
> QFileSystemWatcher: failed to add paths: /home/ak/.config/ibus/bus
> ak at supremo:/dat/work/py2/menubar$ 
> 
> The gui works ok.
> 
> The script is listed below
> 
> ****************
> *#!/usr/bin/python3
> # menu_r.py - menu bar with resources.
>  
> import sys
> from PyQt4 import QtGui
> 
> import qrc_menu
> 
> class MainWindow(QtGui.QMainWindow):
> #    def __init__(self):
>     def __init__(self, parent=None):
>         super(MainWindow, self).__init__(parent)
> #        QtGui.QMainWindow.__init__(self)        
>         self.resize(300,200)
>         self.setWindowTitle('Menu and tool bar.')
>         exit = QtGui.QAction(QtGui.QIcon(':/quit.png'),'Exit', self)
>         exit.setShortcut('Ctrl+Q')
>         exit.setStatusTip('Exit application')
> #        
> self.connect(exit,QtCore.SIGNAL('triggered()'),QtCore.SLOT('close()'))
>         exit.triggered.connect(self.close)
>         toolBar = self.addToolBar('tools')
>         toolBar.addAction(exit)
>         self.centralwidget = QtGui.QWidget(self)
>         self.gridLayout = QtGui.QGridLayout(self.centralwidget)
>         self.plainTextEdit = QtGui.QPlainTextEdit(self.centralwidget)
>         self.gridLayout.addWidget(self.plainTextEdit, 0, 0, 1, 1)
>         MainWindow.setCentralWidget(self, self.centralwidget)
>         self.statusBar()
>         menubar = self.menuBar()
>         file = menubar.addMenu('&File')
>         file.addAction(exit)
> 
>         sayHiAction = QtGui.QAction(QtGui.QIcon(':/hi.png'), 'Greet
>         them!',
> self)
>         sayHiAction.setStatusTip('Say Hi')
>         toolBar.addAction(sayHiAction)
>         file.addAction(sayHiAction)        
>         sayHiAction.triggered.connect(self.sayHi)
> 
>     def sayHi(self):
>         self.plainTextEdit.setPlainText('Hi Pete, hi world!')
>         # setPlainText(text) clears the plainTextEdit window and puts
>         fresh
> text.
>         self.plainTextEdit.appendPlainText('Peace to all people of good 
> will!')
> 
> app = QtGui.QApplication(sys.argv)
> main = MainWindow()
> main.show()
> sys.exit(app.exec_())
> *************
> The PyQt compiled with python3.2 works fine, other than the problem with

> resources. My knee jerk reaction is that the error is likely to be in
the 
> script pyrcc4, though that is only a guess.
> 
> I would greatly appreciate any and all advice.  There is no burning
> urgency 
> for me, because it is quite possible to test the scripts with reading
the
> icon 
> files directly, as was done in the original listing.  However, this is
> *not 
> really* satisfactory as moving the directory with all files to a
different 
> location does cause problems "vanishing icons".

Make sure you are passing the right flags to pyrcc4...

http://www.riverbankcomputing.com/static/Docs/PyQt4/html/resources.html#pyrcc4

Phil