I've seen and tried various QT scrollArea solutions over the past 2 days but none of them work for me. Here's my scroll area setup code as it stands in the MainWindow constructor. This builds and runs without error but doesn't do anything. The scrollArea and ui->Contents have already been set up in the form using QTcreator and the needed widgets have been moved into the scrollArea.
ui->scrollArea->installEventFilter(this);
ui->scrollArea->setMouseTracking(true);
ui->scrollArea->setWidget(ui->Contents);
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setSizeConstraint(QLayout::SetMinimumSize);
ui->scrollArea->setLayout(layout);
The last line seems interchangeable with:
layout->addWidget(ui->scrollArea)
but neither one changes the result, which is a fully-functioning application but without the scroll area I need.
I had similar problem which i solved by creating scrollArea and it's contents via code rather than form and only then using setWidget() method. I described the problem in this thread.
In your case code should look something like this:
QScrollArea *scrollArea;
scrollArea = new QScrollArea(this);
scrollArea->installEventFilter(this);
scrollArea->setMouseTracking(true);
scrollArea->setWidget(Contents);//whatever Contents is, i recommend creating it via code
QVBoxLayout *layout = new QVBoxLayout(this);
layout->setSizeConstraint(QLayout::SetMinimumSize);
scrollArea->setLayout(layout);
Say I have a tabwidget in my ui file
this is how im adding tabs right now:
QPlainTextEdit *tab = new QPlaintextEdit;
int index = ui->tabWidget->addTab(tab, "changeme");
Now I'm wondering if it's possible to change the name of the tab on the go,
for example when subclassing QPLainTextEdit in a class and connecting a signal to it when the text changes then i'd like to add a little star to the tab to indicate that the file has been modified, is it even possible?
QTabWidet::setTabText does what you want.
E.g:
ui->tabWidget->setTabText(index, "new text");
I'm grouping a set of widgets in a parent and then I control the visibility/flow of these widgets by hiding/showing the parent. Is this a good way to achieve what I'm trying to do? Here is the code:
QVBoxLayout* l = new QVBoxLayout(this);
// .....
QWidget* toolset_frame = new QWidget(this);
{
QVBoxLayout* l = new QVBoxLayout(toolset_frame);
l->addWidget(new QLabel(tr("Stuff")));
this->Toolset = new QLineEdit(toolset_frame);
l->addWidget(this->Toolset);
}
l->addWidget(toolset_frame);
// Call toolset_frame->hide() and this hides everything inside the parent
The problem with this solution is that the children shrink in size slightly, I think this is due to some padding or border in the parent. Ideally the children should appear as if they are not contained in an intermediate object, but rather flow with the parent. In this case the horizontal size of the children should not be affected.
http://doc.qt.io/qt-5/qtwidgets-dialogs-extension-example.html
This example shows that your approach is correct. Using a widget to contain the elements you want to hide, and so on.
If you want the margins/content margins/padding to be less, then change it.
// in finddialog.cpp
extensionLayout->setMargin(0);
To quickly prototype what properties to change to get it to look right, try laying it out in the Qt Designer, and modify the property editor to get the look and feel you want.
Hope that helps.
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 am using QDockWidgets and placing two of them on the left side of my application so that tabs can be used to select between them. However, Qt's default behavior for this looks horrible and is unintuitive. Instead of being able to drag the tabs to move the widgets, it places another bar below the selected tab (with the same name) that must be dragged instead. As a user, it would be hard to figure this out.
(My QDockWidgets are "Attributes" and "Library")
Is there a way to get rid of this second bar and make it so I can move my QDockWidgets by dragging the tabs themselves?
If you are adding QTabWidgets to a main window derived from QMainWindow, you can try tabifyDockWidget.
It tabifies two QDockWidgets just like you wanted and of course you are able to drag them.
dockWidget1 = new QDockWidget("Tab1") ;
dockWidget2 = new QDockWidget("Tab2") ;
this->addDockWidget(Qt::LeftDockWidgetArea , dockWidget1 );
this->addDockWidget(Qt::LeftDockWidgetArea , dockWidget2 );
this->tabifyDockWidget(dockWidget1,dockWidget2);
I think, Tom was not too far away from a solution:
You can set your own Widget as title bar:
myDockingWidget->setTitleBarWidget(myTitleBar)
If you design this widget to not show the dock window title, you have it. Via the signal QDockWidget::topLevelChanged your docking widget can even become informed, when it gets floating, so you could then enable the title in myTitleBar again.
As far as I can see from QDockWidget::mousePressEvent implementation in src/gui/widgets/qdockwidget.cpp dragging the dockwidgets using tabs is NOT possible:
QDockWidgetLayout *dwLayout
= qobject_cast<QDockWidgetLayout*>(layout);
if (!dwLayout->nativeWindowDeco()) {
QRect titleArea = dwLayout->titleArea();
if (event->button() != Qt::LeftButton ||
!titleArea.contains(event->pos()) ||
// check if the tool window is movable... do nothing if it
// is not (but allow moving if the window is floating)
(!hasFeature(this, QDockWidget::DockWidgetMovable) && !q->isFloating()) ||
qobject_cast<QMainWindow*>(parent) == 0 ||
isAnimating() || state != 0) {
return false;
}
initDrag(event->pos(), false);
....
As you can see from the implementation one of the things that the QDockWidget checks before allowing undocking is whether the mouse press event has come from title bar or not.
have you tried:
myDockingWidget->setTitleBarWidget(0)
edit:
QWidget* titleWidget = new QWidget(this);
mUi.dockWidget->setTitleBarWidget(titleWidget);
where 'this' is a QMainWindow
this will remove the title bar, though im not sure how to make the QDockWidget draggable from the tabs
Edited:
Please do not use this method. It introduces problems rather than soloves them.
Maybe you can try this wierd way, that is move the QWidget in the dock widget area to the title bar.
I modify the demo in folder
C:\Qt\Qt5.12.9\Examples\Qt-5.12.9\widgets\mainwindows\dockwidgets
to show how it works:
In "void MainWindow::createDockWindows()"
QDockWidget *dock = new QDockWidget(tr("Customers"), this);
dock->setAllowedAreas(Qt::LeftDockWidgetArea | Qt::RightDockWidgetArea);
//make a panel to hold your widgets
QWidget *p = new QWidget(dock);
QVBoxLayout *l = new QVBoxLayout(p);
p->setLayout(l);
customerList = new QListWidget(p);
l->addWidget(customerList);
customerList->addItems(QStringList()
<< "John Doe, Harmony Enterprises, 12 Lakeside, Ambleton"
<< "Jane Doe, Memorabilia, 23 Watersedge, Beaton"
<< "Tammy Shea, Tiblanka, 38 Sea Views, Carlton"
<< "Tim Sheen, Caraba Gifts, 48 Ocean Way, Deal"
<< "Sol Harvey, Chicos Coffee, 53 New Springs, Eccleston"
<< "Sally Hobart, Tiroli Tea, 67 Long River, Fedula");
dock->setWidget(new QWidget());//hide the real dock area
dock->setTitleBarWidget(p); //use the titlebar erea to show the content
The demo:
Drag the edge of the panel to move, actually you can drag the empty area (no child widget area). The widget on this panel still functional properly.
I also think that setTitleBarWidget() really does the trick. I remember seeing it being used for a similar purpose in the source code of the Amarok music player. Amarok has a QMainWindow which only contains dock widgets. You might want to have a look at the source code there.
It looks like you've set your dock tab position to be on the top. The default is for it to be on the bottom. Then it's not as visually jarring to have the tab text right next to the title bar text.
I don't think there's any way to do what you're proposing in Qt (eliminate the QDockWidget title bar and drag from the tab), at least not with the standard widgets. You could probably write a lot of custom code to make it happen, but that's probably not worth it.
Instead, I'd suggest moving the tabs to the bottom (see QMainWindow::setTabPosition) or possibly one of the sides.