I have a lot of widgets in my application and I know I can drag them during runtime and place over another widget in order to merge them (both widgets are on same place and there are tabs under them which I can use to switch them).
How can I insert QDockWidget like this programmatically from start?
For example I want to add 2 QDockWidgets to bottom that are tabbed so that they are in same area and I can tab-switch them
If you want to layout two or more dock widgets as tabbed windows, you can either drag one dock widget over the other (as you properly described), or do that programaticaly using QMainWindow::tabifyDockWidget(QDockWidget *first, QDockWidget *second) function. As the function description says:
Moves second dock widget on top of first dock widget, creating a
tabbed docked area in the main window.
Related
I'm getting started with Qt and decided to build a full-screen text editor. I want to have a button (button with arrow in screenshot) attached to a QDockWidget which opens and closes it so the button is always visible to the right side of the screen and stay anchored to it when dock is visible or resized.
My current app is a simple fullscreen textEdit set to centeralwidget in Mainwindow.
I haven't found a way to do this yet with layouts or existing addAnchor() functions so any help or direction is appreciated.
You can achieve what you want by using a container for your text edit and the button. A QWidget instance can be used as an "invisible"*** container for other widgets.
So in Qt Designer you add a widget as a central widget of the main-window, inside this widget you add the text edit and the button, then you set a vertical layout for this container widget.
Don't forget to restrict the docking widget to only dock to the right side, you can do that with: dock->setAllowedAreas(Qt::DockWidgetArea::RightDockWidgetArea); //assuming dock is the pointer to your QDockWidget.
In case you want the dockWidget to be able to dock to any side and the button to follow, you can do that too, but it get a little bit more complicated. Basically you need to connect a slot to dockLocationChanged of your dockWidget and based on where it's docked you need to set-up a new layout for the container widget to be vertical or horizontal and the order of the textEdit and the button based on the side the dock happened.
LE:*** you will most likely need to set the margins you want, since both the widget and it's layout can have them and the actual content might have higher spacing than you want.
I have two Qt widgets in the window. One of them is QDockWidget, and another one is just QWidget.
When I drag the QDockWidget, the default behaviour of the another widget is moving without changing its size. And I want it to fill the whole window except dock widget, and to change its size programmatically when I drag QDockWidget. Hwo to do it better?
The solution was to set container horizontal policy as "fixed"
When I press a button, I bring up a dialog where user select things and press 'Ok' at the end. I want a splitter in this dialog. Left pane will show tree and right will show something else. How do I do that right?
From Qt example itself:
QSplitter *splitter = new QSplitter(parent);
QListView *listview = new QListView;
QTreeView *treeview = new QTreeView;
QTextEdit *textedit = new QTextEdit;
splitter->addWidget(listview);
splitter->addWidget(treeview);
splitter->addWidget(textedit);
So in this example, splitter is created without any dialog resource. If I have to create this way, that would mean I have to create all my controls in the code as well rather than Qt Creator.
What is the right way to do this when I need other controls on the screen?
You can simply create splitter containing items in Qt Designer :
First place your widgets on your dialog or widget in designer (They should not be in a layout)
Select the widgets that you want to be in a splitter (By holding CTL and clicking on them)
Right click on a selected widget and from Layout menu select Lay Out Horizontally in Splitter or Lay Out Vertically in Splitter.
Now apply a grid layout to the dialog and everything should be OK. You would see something like this in Object Inspector View :
Okay, I know this is ancient, but here's the complete answer.
First, within some sort of widget container, plop your pieces in. For the window I just did, I have a Widget as my window. I put two widgets inside that labeled something like topContainer and bottomContainer. I then put all the widgets they each need into them, and gave them their own layouts.
Then do NOT select the main container. Select the two widgets you want to split. You're in effect putting a splitter on them, not on the main container. So I went to the widget list window and selected both together, then right-click for the dialog window, scroll down to the Layout option, and "Lay Out Vertically in a Splitter" is NOT greyed out. Select it.
You still need a layout on the main container. A splitter is not a layout. So at that point, I just put a vertical layout on the main container.
To repeat: you are NOT setting a layout on the container holding the pieces you're trying to split. You are selecting the two widgets to split and adding a QSplitter around them. That's the trick to get it to work.
You can still create your controls in a .ui file using Qt Designer (integrated in Qt Creator). Within Qt Designer, add a QWidget object to your dialog. Then, from QDialog derived class you'll write, directly in your constructor, create your QSplitter using the QWidget object as a parent.
This way, you can create all but the splitter object from Qt Designer.
I think it's also possible to create the QSplitter (as you can create a QButton, QCheckBox...) item directly from Qt Designer.
I want to make a QToolBar have 3 columns of buttons when docked on the left side of the QMainWindow, but have 1 row when docked on the top of the main window. Is this possible?
I have a tried using a QToolBar with a custom layout, but the normal re-size behavior of the QToolBar doesn’t work (doesn’t hide widgets behind an expand button when its too small). The non-working expand button isn’t that big of a deal, but the bigger problem is that the custom layout prevents the main window from being smaller than the toolbar.
I was able to get my desired behavior by putting each row of Tool Buttons in a QHBoxLayout, putting that layout in a empty QWidget, and calling toolBar->addWidget( widget ) for each row. This gives me a grid toolbar when the toolbar is mounted on the left, and single horizontal bar when mounted on the top.
What I'm looking to do is use the Qt Dock and the Dock widgets as they are, except I would like the show only the widget as opposed to the whole Dock.
to clarify: when a docked widget is brought into view, the whole dock appears and the widget sits on the dock. I would like to hide the portion of the dock which isn't being occupied by the widget, is there any way to do that?
Please let me know if I can clarify further.
I don't think it is feasible with Dock widgets. There are 4 fixed dock areas on a QMainWindow which are shown if a dock widget is dropped onto them.
What you might try is to disable actual docking with void setAllowedAreas(Qt::NoDockWidgetArea) and handle "snapping" yourself with void QWidget::moveEvent ( QMoveEvent * event ), snapping the widget to the main window edges if it comes within x pixels of it.
Hummm this seems difficult...
For a start, use QDockWidget::setTitleBarWidget ( QWidget * widget ) to set a custom title bar. You can create a special widget which has a small minimum size, minimum size hint, and which is not painted (or painted as invisible)...