Darren Dale wrote:
On Saturday 19 August 2006 12:47, Charlie Moad wrote:
On 8/19/06, Darren Dale <[EMAIL PROTECTED]> wrote:
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.
From what I saw, creating QApp in show makes more sense.
I changed the qt backends to create a QApplication in show() rather than at
the time of module import. I also updated the embedding_in_qt* examples.
Samuel, as of svn 2711, you are free to create your QApplication *after* you
import backend_qt(4).
Darren
P.S.- For anyone who is interested, I'd recommend "C++ GUI Programming with Qt
4" (available at Amazon). I'm not an experienced C++ programmer, but the book
has an excellent (and brief) introduction to C++ in the appendix, and is easy
enough to understand for anyone who wants to work with PyQt4.than you
Thank you,
for the moment It is not a problem for me te create the QApplication
before.
I have just 1 week to finish my project. And I use the debian package.
So I don't have time to install svn version for the moment.
I will try it in 2 or 3 weeks.
Programming wyth PyQt4 and matplotlib is really great. You can create
little but good loocking application in a very short time.
Thany you for every people involved in these projects.
Samuel
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