I want to make a listbox, similar to the Combobox, but with out a drop down, just show the whole list with a scrollbar? Looking also to be able to click on and hightlight a row to delete that item if need be.
QComboBox *lv = new QComboBox(this);
lv->setGeometry(QRect(QPoint(0,100), QSize(100, 50)));
lv->addItem("hello1");
lv->addItem("hello2");
lv->addItem("hello3");
lv->addItem("hello4");
You will need to use QListWidget and QListWidgetItem for this.
Related
is it possible to make it so that when selecting different rows from qtablewidget, different text is displayed in qlistwidget? data is added to qlistwidget from qcombobox, and to qcombobox from qstringlist
void MainWindow::on_addService_clicked()
{
auto item = ui->serviceBox->currentText();
ui->serviceListWidget->addItem(item);
}
I called itemSelectionChanged signal processing, but I do not know what to do?
I tried to clear the data from qlistwidget every time I selected a new line, but that's not what I wanted, when I selected a new line, there was a new text in qlistwidget
You can use the itemSelectionChanged signal of the tablewidget and connect it a slot which manipualtes the data in the listwidget.
For details:
https://doc.qt.io/qt-6/qtablewidget.html#itemSelectionChanged
https://doc.qt.io/qt-6/qtablewidget.html#selectedItems
Im writing an QT application, where I have 3 QComboBoxes, with a list of values. I'm trying to do so, when I select one item in a QComboBox, I will remove it from the other QComboBoxes, and when I select another or nothing, it will reappear in the other QComboBoxes again.
Do you have any ideas for this?
Edit:
I have tried to use QStringList, where I had a slot, which removed it from the other QComboBoxes, but it was very bugged and often inserted 2 whitespaces and the same drink twice.
If all comboboxes contain the same items, then you can use the current index of one combobox to disable and hide that index of other comboboxes.
You can just subclass QComboBox and create a slot like this:
void MyComboBox::disableItem(int index)
{
QListView *list_view = qobject_cast<QListView*>(view());
if(list_view)
{
QStandardItemModel *model = qobject_cast<QStandardItemModel*>(list_view->model());
list_view->setRowHidden(index, true);
if(model)
{
model->item(index, 0)->setEnabled(false);
}
}
}
Then you just connect the QComboBox::currentIndexChanged(int index) signal from other comboboxes to this slot. Do this for all 3 comboboxes.
You should also create a logic for enabling and showing the items again when they shouldn't be disabled. It's almost the same function as the one above. You could just create a list of indexes that should be hidden for that combobox and use that to show all the other indexes.
I'm working on my first QT application and I have a problem with QListWidgetItems.
I will be having different kind of list.
for checkboxed list using:
listElement[i]->setFlags(Qt::ItemIsEnabled);
listElement[i]->setCheckState(Qt::Unchecked);
works exactly as wanted.
But now I want a Radio Button list. so my question is in two parts
can use the same logic that I used for checkBox to create Radio Buttons?
I have used:
listElement[i]->setFlags(Qt::ItemIsEnabled);
QRadioButton *radio1 = new QRadioButton(0);
dlList->setItemWidget(listElement[i],radio1);
this will display Items in the list with a radio Button, the problem is that the text is Over the Radio Button:
going to try to demonstrate without image
This is a test
o
for elements 1
instead for checkbox I have
This is a test
[]
for element 1
how can I get the radioButton to align correctly with text?
New Questions:
Thanks alot for the answers my text is next to my RadioButton now.
Only thing there is no WordWrap, My text is Longer than maximum Size of the RadioButton. How can I get it to wordwrap:
rButton = new QRadioButton();
rButton->setFixedSize(LIST_TEXT_WIDTH_WO_ICON, LIST_TEXT_HEIGHT);
rButton->setStyleSheet("border:none");
rButton->setFont(segoe18Font);
rButton->setText("This is just a test for elementsss of type euh!!!");
rButton->setSizePolicy(QSizePolicy::Fixed, QSizePolicy::Preferred);
dropListWidget->setItemWidget(listElement, rButton);
As you may have read, there are two approaches to achieve what you want.
The most flexible one: use a QListView, implement a new delegate and a model if necessary.
Keep using the classic item-based interface (QListWidget) and change the item's widgets either by sub-classing QListWidgetItem or calling QListWidgetItem::setItemWidget.
Since the question points towards the second one, I'll try to provide the simplest item-based solution.
The following piece of code generates the list widget in the picture.
QListWidgetItem *it;
it = new QListWidgetItem(ui->listWidget);
ui->listWidget->setItemWidget(it, new QRadioButton(tr("Item 1")));
it = new QListWidgetItem(ui->listWidget);
ui->listWidget->setItemWidget(it, new QRadioButton(tr("Item 2")));
// .
// .
// .
it = new QListWidgetItem(ui->listWidget);
ui->listWidget->setItemWidget(it, new QRadioButton(tr("Item N")));
where ui->listWidget is a pointer to the QListWidget that holds the items.
I hope this helps. As far as I understand, that's what you need.
I have a QTableWidget and one column of it is for specifying file path. I want to provide user with two options, writing the path, or specifying it using QFileDialog. When I added a button as cell widget, it covered whole cell and the entry disappeared.
QPushButton *browseButton = new QPushButton("...", tableWidget);
tableWidget->setCellWidget(rowCount, 3, browseButton);
How can I insert QPushButton or QAction with QIcon alongside with entry?
Is it possible to add QPushButtons for every item in a QTreeView? For instance, when you click on a TreeItem (that is a button), it's children get displayed as buttons as well? I just have a standard QTreeView.
_layout = new QVBoxLayout(this);
treeView = new QTreeView(this);
QStandardItemModel* standardModel = new QStandardItemModel();
QStandardItem* rootMenu = standardModel->invisibleRootItem();
//populate TreeView
treeView->setModel(standardModel);
treeView->setWordWrap(true);
treeView->setHeaderHidden(true);
//treeView->expandAll();
_layout->addWidget(treeView);
this->setLayout(_layout);
I have not personally done this (yet), but you could try using QAbstractItemView::setIndexWidget(). The widgets won't aren't connected in any way to the data model, so it is up to your code to update them if necessary. Also, you need to call it for each QModelIndex separately.
Here is the answer. You must create your own delegate and applay it for your QTreeView.
To create delegate you must subclass QStyledItemDelegate and re-implement its QStyledItemDelegate::paint(...) method in that way what you want, also, don't forget about re-implementing QStyledItemDelegate::sizeHint(...) method if needed, of course.
Also, you may need to re-implement QStyledItemDelegate::createEditor(...) method.
To apply created delegate to your view (QTreeView) you must create delegate and call QTreeView's method setItemDelegate (or setItemDelegateForColumn, or setItemDelegateForRow).
Good luck!