Hello Justin,
I am having some solid trouble with my recursive function trying to add
QTreeWidgetItems to the tree hierarchy. The loop continues on and then gets
to a certain point and this error pops up when I try to access a
recursedItem in the list.
RuntimeError: underlying C/C++ object has been deleted
Could this have something to do with the design issues you were talking
about? I have done some digging and read that python wrappers are left
behind or I havent called my init function somewhere?
Here is my function:
def setupModelTree(self):
import UnitManager.scripts.read_model_file as readModel
treeObjects = readModel.testRead()
addedToList = []
recurseRoots = []
recurseInnerRoots = []
recurseNo = -1
# Iterate through the dictionary returned by the read model
file function
for name in treeObjects:
# Get the root point and add it to the root of the tree
if name.startswith("rp_"):
rootName = name
rootItem = QtGui.QTreeWidgetItem([name])
recurseRoots.append(rootItem)
self.modelTree.addTopLevelItem(rootItem)
del treeObjects[name] # Remove the RP from the
dictionary
addedToList.append(name)
break
def recurseAddChildren(dict, iterList, recursiveItems):
newlyAdded = []
recurseInnerRoots = []
# Iterating through through last added items layer
for recursedItem in recursiveItems:
addChildren = []
toDelete = []
""" @type recursedItem:
QtGui.QTreeWidget.QTreeWidget """
if iterList[0] != rootName:
for d in dict:
if dict.get(d) ==
recursedItem.text(0): # Error line
toDelete.append(d)
addChildren.append(QtGui.QTreeWidgetItem([d]))
self.deleteDictElements(dict, toDelete)
for toBeAdded in addChildren:
childItem =
QtGui.QTreeWidgetItem(toBeAdded)
recursedItem.addChild(childItem)
newlyAdded.append(toBeAdded.text(0))
recurseInnerRoots.append(childItem)
self.deleteDictElements(dict,
toBeAdded.text(0))
if len(iterList) < 1:
print "errored"
break
else:
print "Adding first layer"
for name in dict:
parent = [item for item in
iterList if item == dict.get(name)]
# If the parent exists
if parent:
childToAdd =
QtGui.QTreeWidgetItem([name])
recursedItem.addChild(childToAdd)
newlyAdded.append(name)
recurseInnerRoots.append(childToAdd)
dict = self.deleteDictElements(dict, newlyAdded)
# KEEP OUTSIDE MAIN LOOP
if len(dict) > 0:
recurseAddChildren(dict,
newlyAdded,recurseInnerRoots)
recurseAddChildren(treeObjects, addedToList, recurseRoots)
print "Model panel set up"
On Thursday, 5 March 2015 11:08:53 UTC+1, Justin Israel wrote:
>
> Generally I would say it is a questionable design if you have child
> classes that make assumptions about the members of the parent. It means
> that your child class can only be used with that specific parent class that
> will have the expected attributes. If your child class needs to trigger
> behavior in the parent, a better design would be to have your child class
> emit signals. This should give you a cleaner separation between the two
> widgets. It then becomes the responsibility of your parent window to
> connect to the signals of interest, and perform the required actions as it
> is notified.
>
>
> On Thu, Mar 5, 2015 at 10:27 PM Benjam901 <[email protected]
> <javascript:>> wrote:
>
>> Hello again Marcus,
>>
>> I was wondering why intellisense does not pick up on the internal
>> variables and buttons etc. do I need to add another handle?
>>
>> Cheers,
>>
>> Ben
>>
>> On Thursday, 5 March 2015 09:29:23 UTC+1, Marcus Ottosson wrote:
>>
>>> self.modelTree = self.uiMainWindow.uiModelTree # This is where I get the
>>> error
>>>
>>> self is referring to your instance of ModelWindow, but you store
>>> uiMainWindow in the instance of MainWindowSetup.
>>>
>>> If you want to access that, you’ll need to pass a handle to it. It’s
>>> typically done using a parent, but you aren’t including the parent in your
>>> __init__ method.
>>>
>>> Try something like this.
>>>
>>> class MainWindowSetup(QtGui.QMainWindow):
>>> def __init__(self):
>>> QtGui.QMainWindow.__init__(self)
>>>
>>> self.uiMainWindow = Ui_MainWindow()
>>> self.uiMainWindow.setupUi(self)
>>> self.uiModelWindow = ModelWindow(self)
>>> class ModelWindow(QtGui.QTreeWidget):
>>> def __init__(self, parent):
>>> print "!! Initialised model window"
>>> QtGui.QTreeWidget.__init__(self, parent)
>>>
>>> self.modelTree = parent.uiMainWindow.uiModelTree # This is where I
>>> get the error
>>>
>>>
>>>
>>>
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