Hello I have followed the mailing list a while and been using PySide
since it start working on Windows
I have been struggling with a drag and drop operation using
QStandardItemModel and a QListView for a while.
My goal is to use my own mime-type and send data defined in my custom
item model to another widget in the application. Whatever I did resulted
in the following error in one or another form:
python.exe main.py
Traceback (most recent call last):
File "main.py", line 23, in mimeData
self.__mimedata.setData(u'application/my-form',self.__qextra)
RuntimeError: Internal C++ object (PySide.QtCore.QMimeData) already deleted.
Traceback (most recent call last):
File "main.py", line 23, in mimeData
self.__mimedata.setData(u'application/my-form',self.__qextra)
RuntimeError: Internal C++ object (PySide.QtCore.QMimeData) already deleted.
I then created the attached application and tested it both PyQt4 and
PySide. It works as expected in PyQt4 but gives the error above in PySide.
I guess I have found a bug in the QMimeData model or do I used PySide
and QMimeData the wrong way?
I am using PySide 1.0.0.0 beta4 with Qt 4.7.1 and Python 2.6.6 on Windows 7
Thanks,
Bjorn Helge Kjosnes
from PySide import QtCore, QtGui
#from PyQt4 import QtCore, QtGui
class MyItemModel(QtGui.QStandardItemModel):
def __init__(self,parent=None):
super(MyItemModel,self).__init__(parent)
self.appendRow([QtGui.QStandardItem('Item 1'),])
self.appendRow([QtGui.QStandardItem('Item 2'),])
self.appendRow([QtGui.QStandardItem('Item 3'),])
self.appendRow([QtGui.QStandardItem('Item 4'),])
def mimeTypes(self):
mtypes = super(MyItemModel,self).mimeTypes()
mtypes.append(u'application/my-form')
return mtypes
def mimeData(self,indexes):
self.__mimedata = super(MyItemModel,self).mimeData(indexes)
extra = 'drop=['
for index in indexes:
item = self.data(index)
extra += '"%s"' % item.__str__()
extra+=']'
self.__qextra = QtCore.QByteArray(extra)
self.__mimedata.setData(u'application/my-form',self.__qextra)
return self.__mimedata
class MyTextEdit(QtGui.QTextEdit):
def __init__(self,parent=None):
super(MyTextEdit,self).__init__(parent)
def dragEnterEvent(self,event):
event.acceptProposedAction()
def dragMoveEvent(self,event):
event.acceptProposedAction()
def dropEvent(self,event):
formats = event.mimeData().formats()
for format in formats:
fs = format.split(';')
if len(fs)>1:
t = "%s\t%s\n" % (fs[0],fs[1])
else:
t = "%s\n" % (fs[0])
if fs[0]=='text/uri-list':
mdata = event.mimeData().data(fs[0])
ulist = mdata.split('\n')
for url in ulist:
if url:
uri = QtCore.QUrl(unicode(url))
t = "%s %s\n" % (t,uri.toLocalFile())
if fs[0]=='application/my-form':
mdata = str(event.mimeData().data(fs[0]))
t = "%s %s\n" % (t,mdata)
self.textCursor().insertText(t)
class MainWindow(QtGui.QMainWindow):
def __init__(self):
super(MainWindow, self).__init__()
self.textEdit = MyTextEdit()
self.setCentralWidget(self.textEdit)
self.dock = QtGui.QDockWidget("Drag items", self)
self.model = MyItemModel(self.dock)
self.itemlist = QtGui.QListView()
self.itemlist.setDragEnabled(True)
self.itemlist.setModel(self.model)
self.dock.setWidget(self.itemlist)
self.addDockWidget(QtCore.Qt.RightDockWidgetArea, self.dock)
if __name__ == '__main__':
import sys
app = QtGui.QApplication(sys.argv)
mainWin = MainWindow()
mainWin.show()
sys.exit(app.exec_())
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