Hi,

I have a problem with my QComboBox delegate. The selection of the ComboBox dissapears when I deselect the delegate. I pasted the delegate code below. Did I forget to overload a QItemDelegate method ?

I heard about an openPersistantEditor method but I don't know where to put it in my code.

What am I missing ?

Thanks for your help.


Qt Code: 
  1. class ComboBoxDelegate(QItemDelegate):
  2.     def __init__(self, owner, itemslist):
  3.         QItemDelegate.__init__(self, owner)
  4.         self.itemslist = itemslist
  5.  
  6.     def paint(self, painter, option, index):		
  7.         # Check if we're on top level of tree
  8.         leftmostSibling = index.sibling(index.row(), 0)
  9.         if leftmostSibling.parent().isValid():
  10.             # We're not on top level of tree
  11.             value = index.data(Qt.DisplayRole)
  12.             print("paint" + value)
  13.  
  14.             # Fill style options with item data
  15.             style = QApplication.style()
  17.             opt.currentText = self.itemslist.stringList()[0]
  18.             opt.rect = option.rect
  19.  
  20.             # Draw item data as ComboBox
  21.             style.drawComplexControl(QStyle.CC_ComboBox, opt, painter)
  22.  
  23.     def createEditor(self, parent, option, index):
  24.         # Check if we're on top level of tree
  25.         leftmostSibling = index.sibling(index.row(), 0)
  26.         if leftmostSibling.parent().isValid():
  27.             # We're not on top level of tree
  28.             value = index.data(Qt.DisplayRole)
  29.             # create the QStyleOptionComboBoxBox as our editor.
  30.             editor = QComboBox(parent)
  31.             editor.setModel(self.itemslist)
  32.             if value == int:
  33.                 editor.setCurrentIndex(value)
  34.             editor.installEventFilter(self)			
  35.             return editor
  36.  
  37.     def setEditorData(self, editor, index):
  38.         value = index.data(Qt.DisplayRole)
  39.         editor.setCurrentIndex(value)
  40.  
  41.     def setModelData(self, editor, model, index):
  42.         value = editor.currentIndex()
  43.         model.setData(index, QVariant(value))
  44.  
  45.     def updateEditorGeometry(self, editor, option, index):
  46.         editor.setGeometry(option.rect)
  47.  
  48.     def sizeHint(self, option, index):
  49.         # Overload sizeHint method so that the QComboBox isn't shrinked 
  50.         # by the QTreeView row height
  51.         index_data = index.data(Qt.SizeHintRole)
  52.         if index_data is None:
  53.             return QSize(20, 20)
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