how to disable drag indicator in QTreeView?
QTreeView create:
m_treeViewUnit = new QTreeView(dock);
m_treeViewUnit->setFrameStyle(QFrame::NoFrame);
m_treeViewUnit->setHeaderHidden(true);
m_treeViewUnit->setEditTriggers(QAbstractItemView::NoEditTriggers);
m_treeViewUnit->setExpandsOnDoubleClick(false);
m_treeViewUnit->setContextMenuPolicy(Qt::CustomContextMenu);
m_treeViewUnit->setDragEnabled(true);
m_treeViewUnit->setDefaultDropAction(Qt::IgnoreAction);
screenshot
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I have two QTableViews (one nested within the other) that share one selection model:
void MyTableWidget::setSelectionModel( QItemSelectionModel* in_p_selection_model )
{
QTableView::setSelectionModel( in_p_selection_model );
m_p_inner_tableview->setSelectionModel( in_p_selection_model );
}
The first QTableView should not automatically scroll to the selected item when I make a selection in the second QTableView. As far as I can tell, there is no "auto scroll to selection" flag. So how can I prohibit this behavior?
I need to auto generate some UI forms in code to display message contents.
I want to use QToolbox, with an item for each message type. I then want to add labels and line edit to the contents of each tab, depending on the message protocol. I cannot seem to programaticaly add widget items to the toolbox item.
Below is my current code segment. The ui->frame is just a container for the toolbox. I will worry later about layout.
In my code, I create a frame and then some labels with parent set to the frame. Then I add the frame as an item to the toolbox.
QToolBox *qtbMainToolbox = new QToolBox(ui->frame);;
qtbMainToolbox->setGeometry(0,0,2000,900);
QFrame *frm1 = new QFrame;
QLabel *lbl1 = new QLabel(frm1);
QLabel *lbl2 = new QLabel(frm1);
QLabel *lbl3 = new QLabel(frm1);
QLabel *lbl4 = new QLabel(frm1);
iRetVal - qtbMainToolbox->addItem(frm1 ,"Test");
There is no visible element in your widgets; icon or any text.
You have to Set icon or Text to Your QLabel.
QToolBox *qtbMainToolbox = new QToolBox(ui->frame);;
qtbMainToolbox->setGeometry(0,0,2000,900);
QFrame *frm1 = new QFrame;
QLabel *lbl1 = new QLabel("Hello World",frm1);
iRetVal - qtbMainToolbox->addItem(frm1 ,"Test");
try above code.
I am using QTabWidget class of Qt.
In TabWidget i am dynamically adding new tab and setting the TextElideMode to right to display the toolbutton in tabBar.
tabWidget = new QTabWidget(this);
m_addNewTab = new QWidget(tabWidget);
m_addNewGridLayout = new QGridLayout(m_addNewTab);
m_addNewWebView = new MyWebView(m_addNewTab);
widget = new QWidget(m_addNewTab);
tb = new QToolButton(widget);
tb->setFixedHeight(20);
tb->setText("<");
tb1 = new QToolButton(widget);
tb1->setFixedHeight(20);
tb1->setText(">");
m_horizontalLayout = new QHBoxLayout(widget);
m_horizontalLayout->addWidget(tb);
m_horizontalLayout->addWidget(tb1);
Please see the below screen shot for the output of the sample application.
When the current tab is selected then both the toolbutton should display and text elide mode should be right but when tab is not selected then toolbutton should not be displayed but text elide mode should be left.
Here in below screen shot i am able to hide and show the toolbutton depending on tab selection but when the tab is not selected text elide mode is setting as right so we are able to see the unnecessary space (check last tab). Setting the text elide mode left also not working because we have already set the toolbutton at left side.
Can someone guide me how to remove the space (last tab from screen shot) when there is not tab selected ?
You'll have to:
Keep track of tab index and corresponding holding widget (let's say std::map<int,QToolButton> toolbutton_by_index
When QTabWidget.currentChanged is emitted, deactivate all widgets except the selected
You can do the 2nd part like this:
std::for_each(toolbutton_by_index.begin(), toolbutton_by_index.end(),
[&index](auto pair){
(pair.first == index)?pair.second->hide():pair.second->show()});
I have a stacked widget on which I have a QLabel. I display an image on this label. I want to zoom and pan this image and I am trying to use the QGraphicsView technique. However a new window opens.
This is what I am doing.
scene = new QGraphicsScene(this);
view = new QGraphicsView(this);
QPixmap pix("/root/Image);
label->setPixmap(pix);
scene->addWidget(label);
view->setScene(scene);
view->setDragMode(QGraphicsView::scrollHandDrag);
view->show();
Can someone please suggest me what I should do. I want the label to act like the QGraphicsView.
Thank You :)
You create a scene and view and add the label to the scene, then tell the view to show itself with: -
view->show()
If, as you state, you want the QGraphicsView on the label, don't add the label to the scene, but add the QGraphicsView to the label: -
QLabel* pLabel = new QLabel(mainWindow); // setting mainWindow as the parent
QGraphicsView* pView = new QGraphicsView(pLabel) // set the label as the parent of the view.
You do not need to call show, as the label will handle that for you, assuming the label is on a Widget that is already displayed.
Now, instead of setting the pixmap on the label, create a pixmap in the scene with: -
pScene->addPixmap(pixmap);
How to Add QListView/QListWidget to QGraphicsScene and add Widgets to ListView
When i Try to add QLisView to QGraphicsScene mouse scroll affects goes from Scene.
I want to add QPushButtons as ListView Items in QgraphicsScene with mouse scroll affect.
Thanks.
What about QGraphicsProxyWidget?
QListView *listView = new QListView;
QGraphicsProxyWidget *proxy = scene.addWidget(listView);
Then (or before that) you can populate the list with anything you want. QPushButton can be added to the list using setIndexWidget(). Also you might rethink the whole idea of having a QListView, and give it a try with QScrollArea and a linear layout containing buttons. That would require a bit more logic to organize items within the scroll area, but it should be more lightweight that QListView with custom widgets.
I second the answer above: ProxyWidget is the answer.
Here is my working code,
Header:
class CenterScreen{
private:
QListWidget* nameListWidget;
QGraphicsProxyWidget* nameProxyWidget;
...
C++ source:
void CenterScreen::addListView()
{
QGraphicsScene* scene = ui.centerGraphicsView->scene();
nameListWidget = new QListWidget();
nameProxyWidget = scene->addWidget(nameListWidget);
...
nameProxyWidget->hide(); // you can control your widget as you like