Hello, I received no answer but, just in case someone has the same problem, I found the solution:
I had PyQt build with the default multithreaded QT library, but for some reason the C++ extension module was linking with the non-multithread version. Now I changed this, and everything works. Ciao, Alfio On Tue, 1 Jul 2003, Alfio Puglisi wrote: >Hello, >hoping that this is not into a FAQ somewhere, but I searched around >without finding much... > >I cannot get my python program (with PyQt modules) and a C++ extension >module to use the same QT objects. Here's what I wrote: > >---------------------------- >#!/usr/bin/env python2 > >import sys >import qt >import qtnetwork > >app = qt.QApplication(sys.arg) > >## This is the C++ module >import pixelview >pixelview.start() >-------------------------- > >now in the C++ source, after the required <Python.h>, <qwidget.h> etc I >try to do some QT stuff: > >QPixmap *temp = new QPixmap(10,10,-1); > >the program compiles OK, but I get the infamous error: > >- must construct a QApplication before a QPaintDevice > >But i DID construct a QApplication. The C++ module does not seem to find >it. They seem to be on different namespaces. For example, this function: > >---- Python ---- >pixelview.redraw( self.viewer.winId()) > >---- C++ ---- >if (!PyArg_ParseTuple( args, "l", &winID)) > return NULL; >QWidget *w = QWidget::find(winID); > >always places NULL into w, even if the window ID passed is a valid handle >to some widget returned by the PyQt winId() function. > >Note that the function declaration were embedded in an extern "C" block, >as usual for Python extensions. I suspect this is some kind of C/C++ >mismatch, but I cannot get at the precise point of failure. > >Versions: >python2-2.2-2 >PyQt-x11-gpl-3.5 >sip-x11-gpl-3.5 > >Thank you in advance for any help. > >Ciao, >Alfio > > > > > > > > > >_______________________________________________ >PyKDE mailing list [EMAIL PROTECTED] >http://mats.imk.fraunhofer.de/mailman/listinfo/pykde > _______________________________________________ PyKDE mailing list [EMAIL PROTECTED] http://mats.imk.fraunhofer.de/mailman/listinfo/pykde
