I want to use a common control (QTreeView) in two different tab pages in QTabWidget.
how to do this ?
I added a tabwidget and controls in tab pages in Qt designer.
using qt creator version 2.4.1 in Win 7.
You can't have the same QTreeView in two different QTabWidget pages. When you add any widget to a layout, that layout takes ownership of the widget. Since there can only be one owner, you're stuck with one parent per widget.
But you can fake it. Give your main page a grid layout. Put a QTabBar running along the top, your QTreeView on the left (or wherever), and a QStackedLayout on the right. Connect the tab bar and the stacked layout so changing tabs in the bar changes the visible page in the stack layout.
That should be just what you're looking for - just be prepared to fight with QTabBar to get it to display like you want it to...
Alternatively, just live with having two separate tree views - they'll both be viewing the same model, after all, so the bulk of the data won't be duplicated. Saves you a fight with QTabBar, too.
Hope that helps!
Related
I am new to Qt Designer so this question may be stupid but I'm really stucked.
I'm creating an app using Qt Designer and PyQt5. My app contains a few screens and I want to switch between them by clicking the button.
The first screen consists of a button (button_1) and a label (label_1) placed in a vertical layout. The second screen also consist of a button (button_2) and a label (label_2), but these are different widgets with different size and content. And I want to place button_2 and label_2 in a horizontal layout.
Previously I didn't use layouts. I just created one .ui file and put button_2 and label_2 above button_1 and label_1. They were overlapping but it didn't affect the performance because I made the button_2 and label_2 invisible when button_1 and label_1 are shown and vice versa. But now I need to make the window resizable, and I need to put the widgets in a layout.
The first thought was to create two separate .ui files and set them using loadUi command when it comes to switching between screens. But I need to use just one .ui file. Is this possible? How can I create two independent layouts? Or maybe there is another way to solve my proble. Any help is very much appreciated.
I think that in this case your best option is to use a QStackedWidget as a container for your labels and buttons. To create a stacked widget in Qt Designer you can drag a Stacked Widget from the container group on the left to the parent widget. This will create a stack with two pages. Each page can then be set up independently. Whatever layout you and widgets you add to a particular page will only be visible when that page is shown. You can add additional pages if you like by right-clicking on the stacked widget and selecting Insert Page from the context menu.
To navigate between the pages in Qt Designer you can choose the correct widget in the tree in the Object Inspector, use the two black arrows in the top-right corner of the stacked widget, or use the context menu of the stacked widget. To navigate between the pages in your python script you would need to use QStackedWidget.setCurrentIndex().
The Qt desktop application I am required to develop has the following GUI:
The application window is split into 3 parts -
left-side window - has a stack of clickable menu items one below the other. Clicking on each item will show up the corresponding UI elements on the prominent right-side window which is much bigger.
right-side window - contains UI to display some data depending on which menu item is clicked on the left-side window. Each left-side window menu item has a different corresponding right-side window UI.
top (header) window - contains some company "brand" related graphics and also a panel to select a serial port from a list along with graphics to represent connect/disconnect status.
How do I develop this kind of UI? What Qt classes should I be using? I'm a beginner to Qt and would deeply appreciate any help. Thank you.
I'd suggest starting in Qt Designer or Qt Creator to create your UI by dragging and dropping different kinds of objects. Qt Designer is a standalone form designer where Qt Creator is full development environment that also includes the functionality of Qt Designer. Using the form designer is a lot easier, particularly when starting out, than creating widgets programmatically.
There's multiple ways to do the list of items on the left. You can use a QListWidget or a series of individual QPushButton instances, one per option. If the list of items changes, then managing the QListWidget content is going to be easier than instantiating a QPushButton for each item, but you might like the appearance of the QPushButton better. It just depends on what you want.
For the right side, look into QStackedWidget. It's specifically designed to display a stack of content where only one item is available at a time.
For the top panel, again, use the form designer to create the layout. You can store an image in a QLabel. A QComboBox might be what you want for the list, or again, you may want a QListWidget. It just depends on what appearance and user experience you're looking for. For the connect/disconnect status, you can use a QLabel and change out the graphics as the status changes.
You'll need to learn about slots and signals; those are crucial to anything Qt-related.
How to Remove Toolbar from QToolBox in Qt?
Normal Toolbox looks like this:
I want to remove this button written with Page 1. Something like this :
I'm not sure if this makes much sense, since those buttons are needed for the functionality of the QToolBox. If you want a stack of widgets for which you can manually control if they are shown or not, then QStackedWidget provides similar functionality without displaying any elements of its own.
edit: No, as the QToolBox it doesn't come with a scrollbar. But since you 'fill' it with widgets of your own, which then are displayed with setCurrentWidget, you can use for example QScrollArea and placing your own widgets inside it.
Hi I am a Qt beginner. I want to make something like a column of icons on the left, after click the icons different forms and results appear on the right, how can I do this? Should I choose QMainWindow or QWidget for this project?
should I choose mainwindow or widget for this
project?
If what you described are the only things present in the window, you should use a QMainWindow. If you think you will want to re-use this arrangement in the future, I'd use a QWidget. It will probably be easier to implement each set of forms as a separate QWidget (in Designer; if you're building the GUI programmatically, just add the forms to a QLayout in a QFrame).
a column of icons on the left, after click the icons different
forms and results appear on the right
For the column of icons, you should look at QListWidget. It provides a vertical list of QListWidgetItems, and the items can contain icons, and nothing else. Your main window can then connect to the list widget's currentItemChanged signal (or itemChanged or something else; there are several choices), and modify the forms in the right-hand side of the window appropriately.
In my QT application I use a QTabWidget for the base navigation. This QTabWidget I setup in the ui. In some of the tabs of the QTabWidget I need to have QStackedWidget to be able to "drill down in the view".
I tried adding the QStackedWidget inside the ui also but it automatically adds a page to the stack. I want to add the pages for the QStackedWidget in code instead. If I in the code try to do this the stackedWidget already have a standard page so myWidget will be the second in the stack.
MyWidget *myWidget = new MyWidget(ui.stackedWidget);
ui.stackedWidget->addWidget(myWidget);
What is the best and easiest way to setup a QStackedWidget inside QTabWidget tab?
How about:
QTabWidget *myTabWidget = new QTabWidget(this);
QStackedWidget *myStackedWidget = new QStackedWidget(myTabWidget);
myTabWidget->addTab(myStackedWidget, "Stacked Widget");
Also you can remove all existing stack pages in Qt's Designer/Creator. Just right-click on the stacked widget and remove all existing pages. Then you can add the needed pages in the code using addWidget().
I'd say - create it in ui, just like you do (this way it's easier to layout/position, add other widgets on the tab later, etc), but simply remove all existing pages (added by designer) from code and add your new ones.
Actually Designer from Qt 4.6 allows to delete all pages from stacked widget - you need to right click, go to submenu "Page X of Y", and choose Delete. Repeat until all pages are gone :)
Maybe this got added to the Designer just recently, so you may still need to remove them from the code if you have an earlier version of Qt.
Speaking of keeping stuff inside ui against keeping it in code i'd vote for "as much in UI-file as possible" :)