[PyQt] PyQt4 and Qt5
Hello Phil, will you eventually provide Windows installers including Qt5 as well? If you will, will it be possible to install them in parallel, i.e. have PyQt4 with Qt4 and Qt5 available at the same time? Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Issue with latest PyQt4 snapshot and Qt 5.0.0
Hello, I built and installed Qt 5.0.0 myself on my openSUSE 12.2 machine. Everything compiled and installed fine. However, when I tried to configure the latest PyQt4 snapshot with a command like ~/py3qt50env/bin/python configure.py -b ~/py3qt50env/bin/ -v ~/py3qt50env/sip - c -j8 I am getting an error Determining the layout of your Qt installation... Error: Unable to find the qmake configuration file /usr/local/Qt-5.0.0/mkspecs/default/qmake.conf. Use the QMAKESPEC environment variable to specify the correct platform. I checked the Qt5 installation and indeed, there is no default directory. How can I tell configure.py which mkspec to use (other than through QMAKESPEC)? Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] Another issue with latest PyQt4 snapshot and Qt5
Hello, here is the next issue I faced. Having resolved the before reported issue temporarily I tried to compile. However, the linking stage failed. Here is the output. g++ -c -m64 -pipe -fPIC -O2 -Wall -W -D_REENTRANT -DNDEBUG - DQT_DISABLE_DEPRECATED_BEFORE=0x040900 -DSIP_PROTECTED_IS_PUBLIC - Dprotected=public -DQT_NO_DEBUG -DQT_MULTIMEDIA_LIB -DQT_GUI_LIB -DQT_CORE_LIB -I. -I/usr/include/python3.2mu -I/usr/local/Qt-5.0.0/mkspecs/default - I/usr/local/Qt-5.0.0/include/QtMultimedia -I/usr/local/Qt-5.0.0/include/QtGui -I/usr/local/Qt-5.0.0/include/QtWidgets - I/usr/local/Qt-5.0.0/include/QtPrintSupport - I/usr/local/Qt-5.0.0/include/QtCore -I/usr/local/Qt-5.0.0/include -o sipQtMultimediapart6.o sipQtMultimediapart6.cpp g++ -shared -Wl,-O1 -Wl,-rpath,/usr/local/Qt-5.0.0/lib -Wl,--version- script=QtMultimedia.exp -o QtMultimedia.so sipQtMultimediapart0.o sipQtMultimediapart1.o sipQtMultimediapart2.o sipQtMultimediapart3.o sipQtMultimediapart4.o sipQtMultimediapart5.o sipQtMultimediapart6.o - L/usr/local/Qt-5.0.0/lib -L/usr/X11R6/lib64 -lQtMultimedia -lQtGui -lQtWidgets -lQtPrintSupport -lQtCore -lXext -lX11 -lm -lpthread /usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: cannot find -lQtWidgets /usr/lib64/gcc/x86_64-suse-linux/4.7/../../../../x86_64-suse-linux/bin/ld: cannot find -lQtPrintSupport That is correct because the installed Qt5 libraries are called libQt5Widgets.so libQt5PrintSupport.so and so on. Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] PyQt4 and Qt5
On Fri, 21 Dec 2012 11:04:33 +0100, Detlev Offenbach det...@die-offenbachs.de wrote: Hello Phil, will you eventually provide Windows installers including Qt5 as well? Yes, but probably only for Python 2.7 and 3.3. If you will, will it be possible to install them in parallel, i.e. have PyQt4 with Qt4 and Qt5 available at the same time? No. Phil ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] Multithreading and plotting
Hey Fabien, See comments below and the bottom for my final changes. Please CC me in replies. On 12/21/12 5:06 AM, lafont.fab...@gmail.com wrote: Hello everyone, I'm trying to plot live datas using matplotlib and PyQt. I need a multithreaded program beacause I use time.sleep and it freeze completely the app during that moment. I've tried that but it crash immediatly: Do you get a seg. fault or some other error? I'm pretty sure I've helped you with this type of Qt application before, but I'll see what I can clear up. from PyQt4 import QtCore, QtGui import time import sys from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar from matplotlib.figure import Figure # Subclassing QThread # http://doc.qt.nokia.com/latest/qthread.html class Graph(FigureCanvas): def __init__(self,parent): self.fig = Figure() self.ax = self.fig.add_subplot(111) FigureCanvas.__init__(self, self.fig) self.R1 = [] self.l_R1, = self.ax.plot([], self.R1,-o) self.fig.canvas.draw() FigureCanvas.updateGeometry(self) class ApplicationWindow(QtGui.QMainWindow): Example main window def __init__(self): QtGui.QMainWindow.__init__(self) self.main_widget = QtGui.QWidget(self) vbl = QtGui.QGridLayout(self.main_widget) qmc = Graph(self.main_widget) vbl.addWidget(qmc,0,0,1,11) self.setCentralWidget(self.main_widget) First, a small thing, I'm not sure if this matters but I've always created layouts by doing: vbl = QtGui.QGridLayout() # addWidget self.main_widget.setLayout(vbl) I got this pattern from the documentation: http://www.riverbankcomputing.co.uk/static/Docs/PyQt4/html/qwidget.html#setLayout class AThread(QtCore.QThread): def run(self): count = 0 while count 5: time.sleep(1) print Increasing count += 1 aw.l_R1.set_data(count, count) I don't approve of subclassing the run method of QThread, but what you have should work a little bit for now. I really don't approve of using a global in another thread affinity and I highly doubt this will work correctly. You should be using Qt signals to communicate between threads, but using signals you may have to get a little more complex with how you are using QThreads to free up the event loops. You are also calling aw.l_R1 which does not exist. You need to have a way to access the graph. As a quick hack I just set the graph to self.qmc and then in the run method I did aw.qmc.l_R1.set_data(count, count). You will also want to update the limits to show the new data as it comes in or set it to a certain range from the start. You will need to redraw the canvas every time you update it. You will likely run into problems in the future if you draw in a different thread from the GUI thread, but for some reason it works in your example. I'm not sure if this was intended, but since you are not saving the previous count you are only plotting points not a line. One way to do this is if you want to keep the last N records (lets say N=200) then you can plot originally self.ax.plot(numpy.arange(200), numpy.zeros(200)) and then update the y-data only like this aw.qmc.set_ydata(length 200 array of previous counts). def usingQThread(): app = QtCore.QCoreApplication([]) thread = AThread() thread.finished.connect(app.exit) thread.start() sys.exit(app.exec_()) I'm really confused at this point. How have you been calling this module? As python test.py? You are creating 2 QApplications, which isn't the easiest to follow. You should create 1 application, then make the window, then make the threads. Another big thing is that when you run thread.finished.connect(app.exit) you are connecting the end of the thread to the app closing. Do you want the Application to completely close when the thread finishes (as you have it which I've never done so not sure if this will cause problems in more complex applications) or do you want the thread to stop, leaving the window open? The application would then close when the last window is closed. if __name__ == __main__: # qApp = QtGui.QApplication(sys.argv) aw = ApplicationWindow() aw.showMaximized() usingQThread() sys.exit(qApp.exec_()) I removed usingQThread method and moved that logic to the if statement so it now looks like this: if __name__ == __main__: qApp = QtGui.QApplication([ ]) aw = ApplicationWindow() aw.showMaximized() thread = AThread() thread.finished.connect(qApp.exit) thread.start() sys.exit(qApp.exec_()) I also added a self.qmc = qmc in the ApplicationWindow and forced the y-limits in the Graph.__init__ method using the following: self.ax.set_xlim(-1, 6) self.ax.set_ylim(-1, 6) Then in the run method the last 2 lines in the while loop now say: aw.qmc.l_R1.set_data(count, count) aw.qmc.draw() This got it running for me, although it had the plotting points
Re: [PyQt] PyQt Digest, Vol 101, Issue 21
: CGErrorBreakpoint -- next part -- An HTML attachment was scrubbed... URL: http://www.riverbankcomputing.com/pipermail/pyqt/attachments/20121220/dc692 bdd/attachment-0001.html -- Message: 3 Date: Thu, 20 Dec 2012 17:32:23 +0100 From: Fabien Lafont lafont.fab...@gmail.com To: pyqt@riverbankcomputing.com pyqt@riverbankcomputing.com Subject: [PyQt] Multithreading and plotting Message-ID: CAC9H_chunLCx2Mju8oAH=pph2a5g7q7v_upayzpqpfgengu...@mail.gmail.com Content-Type: text/plain; charset=iso-8859-1 Hello everyone, I'm trying to plot live datas using matplotlib and PyQt. I need a multithreaded program beacause I use time.sleep and it freeze completely the app during that moment. I've tried that but it crash immediatly: from PyQt4 import QtCore, QtGui import time import sys from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as FigureCanvas from matplotlib.backends.backend_qt4agg import NavigationToolbar2QTAgg as NavigationToolbar from matplotlib.figure import Figure # Subclassing QThread # http://doc.qt.nokia.com/latest/qthread.html class Graph(FigureCanvas): def __init__(self,parent): self.fig = Figure() self.ax = self.fig.add_subplot(111) FigureCanvas.__init__(self, self.fig) self.R1 = [] self.l_R1, = self.ax.plot([], self.R1,-o) self.fig.canvas.draw() FigureCanvas.updateGeometry(self) class ApplicationWindow(QtGui.QMainWindow): Example main window def __init__(self): QtGui.QMainWindow.__init__(self) self.main_widget = QtGui.QWidget(self) vbl = QtGui.QGridLayout(self.main_widget) qmc = Graph(self.main_widget) vbl.addWidget(qmc,0,0,1,11) self.setCentralWidget(self.main_widget) class AThread(QtCore.QThread): def run(self): count = 0 while count 5: time.sleep(1) print Increasing count += 1 aw.l_R1.set_data(count, count) def usingQThread(): app = QtCore.QCoreApplication([]) thread = AThread() thread.finished.connect(app.exit) thread.start() sys.exit(app.exec_()) if __name__ == __main__: # qApp = QtGui.QApplication(sys.argv) aw = ApplicationWindow() aw.showMaximized() usingQThread() sys.exit(qApp.exec_()) Could you explain me why? The aim is to use one thread to acquire the data and another to refresh the graph. Thanks! Fabien -- next part -- An HTML attachment was scrubbed... URL: http://www.riverbankcomputing.com/pipermail/pyqt/attachments/20121220/db252 1fa/attachment-0001.html -- Message: 4 Date: Fri, 21 Dec 2012 11:04:33 +0100 From: Detlev Offenbach det...@die-offenbachs.de To: pyqt@riverbankcomputing.com Subject: [PyQt] PyQt4 and Qt5 Message-ID: 2755190.YHLBfl5yGU@saturn Content-Type: text/plain; charset=us-ascii Hello Phil, will you eventually provide Windows installers including Qt5 as well? If you will, will it be possible to install them in parallel, i.e. have PyQt4 with Qt4 and Qt5 available at the same time? Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de -- next part -- An HTML attachment was scrubbed... URL: http://www.riverbankcomputing.com/pipermail/pyqt/attachments/20121221/c55e2 94f/attachment-0001.html -- Message: 5 Date: Fri, 21 Dec 2012 12:01:08 +0100 From: Detlev Offenbach det...@die-offenbachs.de To: pyqt@riverbankcomputing.com Subject: [PyQt] Issue with latest PyQt4 snapshot and Qt 5.0.0 Message-ID: 2812146.BFkD31vffh@saturn Content-Type: text/plain; charset=us-ascii Hello, I built and installed Qt 5.0.0 myself on my openSUSE 12.2 machine. Everything compiled and installed fine. However, when I tried to configure the latest PyQt4 snapshot with a command like ~/py3qt50env/bin/python configure.py -b ~/py3qt50env/bin/ -v ~/py3qt50env/sip - c -j8 I am getting an error Determining the layout of your Qt installation... Error: Unable to find the qmake configuration file /usr/local/Qt-5.0.0/mkspecs/default/qmake.conf. Use the QMAKESPEC environment variable to specify the correct platform. I checked the Qt5 installation and indeed, there is no default directory. How can I tell configure.py which mkspec to use (other than through QMAKESPEC)? Regards, Detlev -- Detlev Offenbach det...@die-offenbachs.de -- next part -- An HTML attachment was scrubbed... URL: http://www.riverbankcomputing.com/pipermail/pyqt/attachments/20121221/8780d 124/attachment-0001.html -- Message: 6 Date: Fri, 21 Dec 2012 12:09:03 +0100 From: Detlev Offenbach det...@die-offenbachs.de To: pyqt@riverbankcomputing.com Subject: [PyQt] Another issue with latest PyQt4 snapshot and Qt5 Message-ID: 3630416.fgq1txFdtm@saturn Content-Type: text/plain; charset=us-ascii Hello, here is the next issue I faced. Having resolved the before reported issue temporarily I tried to compile. However, the linking stage failed. Here is the output. g++ -c -m64 -pipe -fPIC -O2 -Wall -W -D_REENTRANT -DNDEBUG - DQT_DISABLE_DEPRECATED_BEFORE=0x040900
[PyQt] newbie installing under OpenBSD
I'm trying to install PyQt-x11-gpl-4.9.6 from a freshly downloaded tarball. I have sip-4.14.2 installed, Python 2.7.1p9 from OpenBSD ports, qt4-4.7.3p0 also from OpenBSD ports. Following the directions in the README, when I do: python2.7 configure.py --verbose where I extracted in /usr/src/misc/pyqt4/PyQt-x11-gpl-4.9.6 I get messages like: qtdirs.cpp:1:28: error: QCoreApplication: No such file or directory qtdirs.cpp:2:17: error: QFile: No such file or directory qtdirs.cpp:3:24: error: QLibraryInfo: No such file or directory qtdirs.cpp:4:23: error: QTextStream: No such file or directory qtdirs.cpp: In function 'int main(int, char**)': qtdirs.cpp:16: error: 'QCoreApplication' was not declared in this scope And a whole bunch more. If this were C I'd say I need to use a -I to include a path because all these files it isn't finding are in /usr/local/include/X11/qt4/QtCore. There aren't any spaces in the path, and I tried setenv PYTHONPATH /usr/local/include/X11/qt4/QtCore but it didn't help. I also tried putting a -I/usr/local/include/X11/qt4/QtCore in the INCPATH in the Makefile. I don't know much of anything about Python or QT, I'm just trying to get the qt-gui in gnuradio working. I think I'm missing something pretty basic but Googling didn't help much. Thanks for any help, Alan, ab1jx -- Credit is the root of all evil. - AB1JX ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
