qlistview

问题 How to do item in QListView selected as I would click on him? Way I tried to do this I have selection but like not-active one. Without Blue highlight only grey one. To be mroe detailed: Make QListView AddSomeItems Run app Move mouse to any item Select it Now its, selected and ALSO blue. This is what I want to do with item before I run application. If it is possible of course. (selectable + hover + focus?) I want to have it without clicking I tried many ways: view->clicked(selectedIndex); view

问题 I have a QListView and have assigned a model and a delegate. I am using it to display images in a horizontal bar as below On a user event, data is updated in the model. One such event causes the width of the images to be reduced like below(#4). I emit a dataChanged on the corresponding index and only the concerned widget is repainted. Because of this, there is a gap between #4 and #5 which does not get filled. I am thinking that there must be a way to refresh all visible rows - but am unable

问题 I have a QListView and have assigned a model and a delegate. I am using it to display images in a horizontal bar as below On a user event, data is updated in the model. One such event causes the width of the images to be reduced like below(#4). I emit a dataChanged on the corresponding index and only the concerned widget is repainted. Because of this, there is a gap between #4 and #5 which does not get filled. I am thinking that there must be a way to refresh all visible rows - but am unable

问题 I have QListView *myListView; QStringList *myStringList; QStringListModel *myListModel; which I fill with data like this: myStringList->append(QString::fromStdString(...)); myListModel->setStringList(*myStringList); myListView->setModel(myListModel); I want to change the font-color of some list entries, so I tried: for (int i = 0; i < myListModel->rowCount(); ++i) { std::cerr << myListModel->index(i).data().toString().toStdString() << std::endl; myListModel->setData(myListModel->index(i),

问题 I am new to QML, so please forgive my lack of knowledge. I am loading some data from my database - after clicking in a button - and I want to fill a ListView with it. This is my ListView: Rectangle { id:tblKules anchors.horizontalCenter: parent.horizontalCenter width: menuListaItem.width height:300 visible:false color: "#e5e6e8" ListView { id: listView anchors.fill: parent; anchors.margins: 5 model: mainController.listaDispositivos spacing: 1 delegate: Component { Rectangle { id:item width:

问题 I have a UI.py file with the mainWindow class definition (build with Qt Designer and Pyside). The UI is imported in the main module. In the Ui I have a listbox. Based on the left or right mouse clicked on an item a procedure must be executed, e.g leftMouseClicked and rightMouseClicked. Thanks for your help. 回答1: you can define a mousePressEvent() method in your QListWidget subclass to handle mouse press event. Get which button is clicked by the event parameter and save it to an attribute.

问题 I am having trouble retrieving the filenames from selected QListview, I want the get the names of the files I selected from my list so that I can open the files by calling the filenames I retrieved. However, this doesn't work... Also, how do I set a multi select mode and retrieve all the files' filenames selected?? from PyQt5 import QtCore, QtGui, QtWidgets import PandasModel import pandas as pd class Ui_MainWindow(object): def setupUi(self, MainWindow): MainWindow.setObjectName("MainWindow")

问题 I have my own subclass of QListView and I would like to change the color of an item with index mLastIndex . I tried with QModelIndex vIndex = model()->index(mLastIndex,0) ; QMap<int,QVariant> vMap; vMap.insert(Qt::ForegroundRole, QVariant(QBrush(Qt::red))) ; model()->setItemData(vIndex, vMap) ; But it didn't change the color, instead, the item wasn't displayed anymore. Any idea about what was wrong? 回答1: Your code are simply clear all data in model and leaves only value for Qt::ForegroundRole

问题 I'm right now creating an Qt-application and have following problem: I designed a custom QWidget with some labels and checkboxes. The application should now show a list of the custom QWidgets. I tried the QListWidget but is very slow for my use case. I want to add over 6000 elements of my custom QWidget. If I create these instances of the element and add it to the QListWidget the application will crashed. Which is the best approach for my issue? Thanks a lot! 回答1: As others have noted,

问题 It is python/PySide2 interface related problem, as much as I tried, I couldn't make it sync (QListView and QTableView). I will try to simplify it, instead of explaining the whole complicated thing which is much bigger with full of forms stuff in QT... Just imagine to have a data structure (I guess, model) like the following: dict_of_dicts={ 'dict1':{'k1':'v1', 'k2':'v2', 'k3':'v3'}, 'dict2':{'k4':'v4'}, 'dict3':{'k5':'v5', 'k6':'v6', 'k7':'v7'}, } I would like to have a form (or dialog), with