On Friday 18 August 2006 08:27, Darren Dale wrote:
> On Wednesday 16 August 2006 04:54, Samuel GARCIA wrote:
> > Thank you,
> > Sorry I did known the existence of matplotlib.backends.backend_qt4agg.
> > It is more easy than I thought.
> >
> > but I still have a problem. This is my code :
> >
> > import sys
> >
> > from PyQt4.QtCore import *
> > from PyQt4.QtGui import *
> >
> > from matplotlib.backends.backend_qt4agg import FigureCanvasQTAgg as
> > FigureCanvas
> > from matplotlib.figure import Figure
> >
> > #------------------------------------------------------------------------
> >-- ---- class MyWidget(QWidget):
> > def __init__(self, parent=None):
> > QWidget.__init__(self, parent)
> > self.menuBar = QMenuBar()
> > self.fileMenu = QMenu(self.tr("&File"), self)
> > self.menuBar.addMenu(self.fileMenu)
> >
> > mainLayout = QVBoxLayout()
> > mainLayout.setMenuBar(self.menuBar)
> >
> > self.setLayout(mainLayout)
> >
> > #------------------------------------------------------------------------
> >-- ---- if __name__ == "__main__":
> > app = QApplication(sys.argv)
> > dialog = MyWidget()
> > dialog.show()
> > sys.exit(app.exec_())
> >
> > and it does not works because the main window is blocking.
There is a comment in the embedding_in_qt.py example:
# The QApplication has to be created before backend_qt is imported, otherwise
# it will create one itself.
This goes for qt4 as well, and is the source of the problem. You can have only
one QApplication at a time. (Ted, John, do you think the QApplication really
needs to be created during the module import? show() is the only function
that looks for the QApplication, maybe the qApp should be created there
instead. Any reason against?)
I added an example, embedding_in_qt4.py, to the svn repository. It is closely
based on embedding_in_qt.py.
Darren
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