[PyKDE] PyQT and Rpy crashes by using in abstrakt methods

[Matthias Frick]

Hi all,

I got an problem using an R function call in an function which overwrite 
an abstrakt function of the QtCore.QAbstractTableModel.  (QT 4.1.3 and 
Pyhton 2.4, tested with several R versions)

Running the following script get following result: the windows crashes 
and the commandline show this:

    3
    3
    3
    3
     >Exit code: 1073807364


Maybe someone off you can help me:

Here is the code: Look at line 37: print with_mode(BASIC_CONVERSION, 
r.dim)(self._dataFrame)[0]
If I comment this line all work fine ...
But the R function out of the abstrakt GUI function work fine too.

Regards
Matthias

---------------------------------------------------------

import sys
from PyQt4 import QtCore, QtGui

from rpy import *

class QagsDataFrameModel(QtCore.QAbstractTableModel):
    def __init__(self, data_frame, parent = None):
        QtCore.QAbstractTableModel.__init__(self, parent)

        self._dataFrame = data_frame

    def columnCount(self, parent):
        return 2

    def data(self, index, role):
        if not index.isValid():
            return QtCore.QVariant()
        if role != QtCore.Qt.DisplayRole:
            return QtCore.QVariant()
        return QtCore.QVariant("2")


    def headerData(self, section, orientation, role):
        header_names = ("s", "d")
        if orientation == QtCore.Qt.Horizontal and role == 
QtCore.Qt.DisplayRole:
            if section in range(len(header_names)):
                return QtCore.QVariant(header_names[section])
            else:
                return QtCore.QVariant()
        return QtCore.QVariant()

    def rowCount(self, parent):
        #
        # Look HERE !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
        #
        #Here I call an R function:
        print with_mode(BASIC_CONVERSION, r.dim)(self._dataFrame)[0]
        return 3


class MainWindow(QtGui.QMainWindow):
    def __init__(self, parent=None):
        QtGui.QMainWindow.__init__(self, parent)
   
        self.fileMenu = self.menuBar().addMenu(self.tr("&File"))
   
        self.fileMenu.addAction(self.tr("E&xit"), 
self,QtCore.SLOT("close()"), QtGui.QKeySequence(self.tr("Ctrl+Q")))
   
        df = with_mode(NO_CONVERSION, 
r)("data.frame(x=c(1,2,3),y=c(2,3,4))")
        self._model = QagsDataFrameModel(df, self)
   
        self._view = QtGui.QTableView(self)
        self._view.setModel(self._model)
   
        self.setCentralWidget(self._view)
        self.setWindowTitle(self.tr("Simple DataFrame Model"))


if __name__ == "__main__":
    app = QtGui.QApplication(sys.argv)
    window = MainWindow()
    window.resize(640, 480)
    window.show()
    sys.exit(app.exec_())


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