qtreeview

问题 I'm trying to implement a file directory using PyQt5. I'd like to incorporate drag and drop functionality within this tree to support both internal and external files (i.e. if I had some files on my desktop I'd like to be able to drop them into a folder in my PyQt view). This is what I have currently: from PyQt5.QtWidgets import QTreeView,QFileSystemModel,QApplication, QMenu, QAbstractItemView from PyQt5.QtCore import * from PyQt5.QtGui import * from src import config class Tree(QTreeView):

问题 I'm trying to implement a file directory using PyQt5. I'd like to incorporate drag and drop functionality within this tree to support both internal and external files (i.e. if I had some files on my desktop I'd like to be able to drop them into a folder in my PyQt view). This is what I have currently: from PyQt5.QtWidgets import QTreeView,QFileSystemModel,QApplication, QMenu, QAbstractItemView from PyQt5.QtCore import * from PyQt5.QtGui import * from src import config class Tree(QTreeView):

问题 I have a tree of items. It is like this: Categorias (root) - General --- Computadoras --- Tablets - Insumos --- Cartuchos The problem is that the QTreeView is being completed always with the same information. I get a tree view looking like this: Categorias (root) - General --- General --- Insumos - Insumos --- General I have put a "print" in the index() method in order to see if the index was being created, and then, when I enter, for example, the "General" category for the first time,

问题 I would like to build a dialog similar to QFileDialog::getExistingDirectory() for which the OK-button only is enabled when the selected directory contains certain files. I know I cannot achieve this with QFileDialog, instead I would have to come up with my own QDialog that has a QTreeView coupled to a QFileSystemModel. How can I limit the QTreeView to directories? How can I get the currently selected directory so I can check whether it contains some filenames? 回答1: Use setFilter on the

问题 I am trying to load child items in a treeview +top parent1 parent2 parent3 To start off I populate the model with parent node information only and attach it to a treeview, the tree looks like above. self.mytreeview=QtGui.Qtreeview() self.model=QtGui.QStandardItemModel(self.mytreeview) def initialise_model(self): '''Populate the model with parent nodes only''' #open file and process each line, each file line has the parent node info .... for file_name_entry in fileobject: parent_item=QtGui

问题 I have a QTreeView rendering QAbstractItemModel , where I would like to set the background of certain cells based on the data in the model. I return QBrush from model::data(Qt::BackgroundColorRole) and it works until I apply a style to an item. Setting any style to the item (even something that has nothing to do with background color, e.g. styling the border) overrides the color I return from the model (the calls to the model querying the background color are made). I.e. the view behaves as

问题 Basically, what I'm trying to achieve is combine "Editable Tree Model" and "Simple Dom Model" examples. So I'm having the latter as a base and I've copied the edit functions over there, changed the flags, setData , etc. I've already had success with editing entries. Now, I have a problem with adding rows to the model. Specifically, when I use insertAfter function in QDomNode::parentNode() , the model gets updated only internally. When I collapse and expand the parent, the added node(s) are

问题 I want to highlight (or in general customise the formatting) of specific substrings appearing in a QTreeView in PyQt. To demonstrate what I mean, I have taken the example at PyQt4\examples\itemviews\dirview.pyw and manually added highlighting: Here all instances of the substring 'as' are highlighted, but in general it might not be a pattern match, I may actually want to be very specific. I know that this can be easily done to a QTextEdit as per this SO question, but that relied on moving

问题 I'm trying to enable drop on a custom model I have hooked up to QTreeView . I've done the following: Ensured that acceptDrops is enabled on the QTreeView Implemented on my custom model supportedDropActions to return Qt::CopyAction | Qt::MoveAction Implemented on my custom model mimeType s to return a QStringList with text/uri-list Implemented on my custom model dropMimeData to handle the drop if it ever occurred. This is all I needed to get it working on a QTreeWidget . I've gone on to:

问题 I'm trying to implement QAbstractItemModel for QTreeView. I have problem with inserting rows. I noticed that if I insert at the beginning of my application all works fine. But If I insert rows later - after some other operations (like selections etc.) new items stay invisible. Moreover QTreeView seems to doesn't work at all! Do I have to emit some signals to notify QTreeView about rows insertion? This is my insertion method: bool LayersModel::insertRows(int position, int count, const