The QRadioButton widget provides a radio button with a text label. A QRadioButton is an option button that can be switched on checked or off unchecked.
How to change the PyQt style?
Radio buttons typically present the user with a "one of many" choice. In a group of radio buttons, only one radio button at a time can be checked; if the user selects another button, the previously selected button is switched off.
Radio buttons are autoExclusive by default. If auto-exclusive is enabled, radio buttons that belong to the same parent widget behave as if they were part of the same exclusive button group. If you need multiple exclusive button groups for radio buttons that belong to the same parent widget, put them into a QButtonGroup.
Whenever a button is switched on or off, it emits the toggled signal. Connect to this signal if you want to trigger an action each time the button changes state.
Use isChecked to see if a particular button is selected. Just like QPushButtona radio button displays text, and optionally a small icon.
The icon is set with setIcon. The text can be set in the constructor or with setText. A shortcut key can be specified by preceding the preferred character with an ampersand in the text. For example:. See the QShortcut documentation for details. Important inherited members: textsetTexttextsetDownisDownautoRepeatgroupsetAutoRepeattogglepressedreleasedclickedand toggled. The parent argument is passed on to the QAbstractButton constructor.
Initialize option with the values from this QRadioButton. This method is useful for subclasses when they need a QStyleOptionButtonbut don't want to fill in all the information themselves. Reimplements an access function for property: QWidget::minimumSizeHint. Reimplements an access function for property: QWidget::sizeHint. Documentation contributions included herein are the copyrights of their respective owners. Qt and respective logos are trademarks of The Qt Company Ltd.
All other trademarks are property of their respective owners. Detailed Description A QRadioButton is an option button that can be switched on checked or off unchecked. See also QStyleOption::initFrom.Using QPushButton developers can create and handle buttons. This class is easy to use and customize so it is among the most useful classes in Qt. In general the button displays text but an icon can also be displayed. The text of QPushButton can be set upon creation or using setText.
To get the current text of the button use text. The icon of QPushButton can also be set upon creation. After creation the icon can be changed using setIcon To get the current icon of the button use icon. To set the position and the size of the button use setGeometry. If you want just to modify the size of the button use resize.
QPushButton emits signals if an event occurs. To handle the button connect its appropriate signal to a slot:. The following simple code snippet shows how to create and use QPushButton.
It has been tested on Qt Symbian Simulator. An instance of QPushButton is created. Signal released is connected to slot handleButton which changes the text and the size of the button.
The above steps are for linux but can easily be followed on other systems by replacing make with the correct make call for the system. Jump to: navigationsearch. Categories : HowTo Snippets Tutorial. Navigation menu Personal tools Sign in. Namespaces Page Discussion.
PyQt - QRadioButton Widget
The dark mode beta is finally here. Change your preferences any time. Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. No translation needed, it is a stylesheet: a text document used by qt and therefore by pyqt, since pyqt calls qt. For example:. Learn more. Asked 6 years, 2 months ago.
Active 4 years, 10 months ago. Viewed 17k times. Active Oldest Votes. For example: self. Oliver Oliver Uri Agassi 34k 12 12 gold badges 65 65 silver badges 84 84 bronze badges.
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I do have a lineEdit which will get a directory path by a dialog which works fine. If one starts the program this lineEdit is empty by default and that's ok. A button, which shall generate a file list and show it in a list view, exists. It's functionality is implemented already and working fine.
This button by default is disabled when the program is started for the first time. What I want to do now is, enabling the button when something is entered at the lineEdit and disabling it when the content is removed. I would love something which takes the content into account like that, that it decides whether the content is empty or not and than sets the appropriate value to the button.
Looks like you want the textChanged signal, since that sends the current text:. How about using box-shadows? Your button by default is included in the tab order which results in the focus effect.
Try removing the button from the tab order. You can do by setting the TabStop of your button to False when your form loads.
I tried the example below and it worked for me I edited some code in here, basically i am checking hover state onLoop function, so you can change your settings on here import flash. You need to create new slot for that purpose. It is very comfortable for such short functions. I'm going to attempt to answer your questions directly, however there is much that can be discussed here. What this template doing? All controls have some kind of default template, a pre-defined look and feel of what the control looks like.
The Template is overriding the default look and feel You should be able to get the parent of the ImageButton inside the ImageButton click handler. I didn't actually test any of this, but in theory, these are possible solutions. So as not to mess up the CSS you have working on the set of buttons, Wrap the set of buttons in a div and apply one of these classes to the div.
Object, e As System. EventArgs Handles MyBase. Load lblA. It crashed if you dont press btn1 because without press it, mpAudio will be null. Then when onPause call, mpAudio. Note that: onPause is called whenever the activity is not shown on screen but is still running in your case, you start other activity with btn2,3 then it OpenFileDialog ; dlg.This tutorial aims to provide a hands-on guide to learn the basics of building a small Qt4 application in Python.
To follow this tutorial, you should have basic Python knowledge. However, knowledge of Qt4 is not necessary. I'm using Linux in these examples and am assuming you already have a working installation of Python and PyQt4. To test this, open a Python shell by typing 'Python' in a console to start the interactive interpreter and type:. The examples in this tutorial as easy as possible, showing useful ways to write and structure your program. It is important that you read the source code of the example files, most of the explanations are in the code.
The best way to get comfortable with PyQt is play around with the examples and try to change things. Let's start easy: popping up a window and displaying something.
The following small program will pop up a window showing "Hello, world! Let's add some interaction!
We'll replace the label saying "Hello, World! This assignment is done by connecting a signalan event which is sent out when the button is pushed, to a slotwhich is an action, normally a function that is run in the case of that event. You can imagine that coding this way is not scalable nor the way you'll want to continue working.
So let's make that stuff pythonic, adding structure and actually using object-orientation in it. We create our own application class, derived from a QApplication and put the customization of the application into its methods: One method to build up the widgets and a slot which contains the code that's executed when a signal is received.
In the picture, you can see a simple GUI, with in green letters the names of the widgets. What we are going to do is We compile the. The way our program works can be described like this: We fill in the lineedit Clicking the add button will be connected to a method that reads the text from the lineedit, makes a listviewitem out of it and adds that to our listview.
Clicking the deletebutton will delete the currently selected item from the listview. Here's the heavily commented code only works in PyQt3 :. You can test what a widget looks like, see what's available in Qt, and have a look at properties you might want to use. The API translation is straightforward, and after a little experience, you'll find the developers API docs one of the tools you really need.
I think I might have missed an argument that can be set Additionnal information: Qt Creator 4. I'm using Qt 5.
Icons used come from the FontAwesome 'library'. OlivierDuguay Hi Nope a style sheet cannot change the binary icon. You can however use a transparent PNG and change the color of the button and have a similar effect. Alternatively, you can in code change the Icon and set the changed icon back to button. Using a transparent PNG and simply draw on top of a filled pixmap would also do. Wait Is the icon really a font? But I find it weird that I downloaded a resources file. I think its a font but icon creates an icon by painting it on an icon.
I would have a look on how it generate the icon to see :. Cool, thanks mrjj! First, the icon is lightblue, then when I click on it, the icon change to black, and when it loose focus, it is lightblue again So annoying Is that the normal roles for icons. Active, Focus etc? If you look at Icon properties, there are more than one to assign. I think there is alot of tweaking possible with those options. I never seen this before. Just digging in code :. I agree that the stylesheet seems not to anything with the icons.
In what state is it not black as you want? Maybe its just how it auto generate the ison for the other roles. Thanks a lot mrjj!!! I found all the docs needed to change the color! Like you said, it's impossible to change the color via the stylesheet, but there's a QVariantMap that can be set and gave to the function as an argument to change the color of the icon depending of the state of the button.
OlivierDuguay Super! So it was possible via the options.
Qt Forum. How to change QPushButton icon color This topic has been deleted. Only users with topic management privileges can see it. Hi everyone, I just wonder if there's a way to change the color of a QPushButton icon via it stylesheet Thanks for your help! Reply Quote 0 1 Reply Last reply.This tutorial shows how to place three radio buttons and change a text label depending on which radio button is selected. Give the project a different name and location to the hello world tutorial.
As in the hello world tutorial, delete the menu bar, tool bar and status bar from the default new project.
How to Use QPushButton
This section describes how to design the GUI application window for this Qt radio button example. Radio buttons must be placed and modified. A label must be placed and modified. Place thee radio buttons on the main window, one above the other as shown below.
Radio buttons are placed by dragging them from the left pane in Qt Creator and dropping them on the main window. Select the radio buttons by clicking the top radio button, then holding down the Ctrl key and clicking the other two buttons.
The radio buttons should now be grouped together and aligned neatly as shown below. Double-click the text of each radio button to change its text label. After changing the text, hit Enter to complete the change. Change the names of the radio buttons using the bottom right pane in Qt Creator. Change the button names to rb1rb2 and rb5 from top to bottom. Button names are changed next to objectName under QObject in the right bottom pane as shown below.
Finally, select the top radio button and change it to checked. To do this, click the checked checkbox under QAbstractButton in the bottom right Qt Creator pane as shown below. Save the changes and build the application. It can now be run and the radio buttons should operate as expected. Only one radio button in the group can be selected or checked at a time. Place a text label to the right of the radio buttons. To do this, drag a Label widget under Display Widgets in the left Qt Creator pane and drop it on the main application window.
Change the label name to lblChoice. Drag the sides of the main application window to make it a more suitable size. Click the window for the resize handles to appear. This text will appear in the top title bar of the application window when the application is run.
To complete the Qt radio button example tutorial, code must be added that will run when the radio buttons are clicked. The code updates the text label to show which radio button is selected. Right-click each radio button in turn, from top to bottom, and select Go to slot… from the menu that pops up.
In the Go to slot dialog box that opens, make sure that clicked is selected and then click the OK button. To get back to the GUI design editor, click mainwindow. After all three buttons have been done, code in mainwindow. In each radio button handler, add code to modify the label. The label will be updated with the text of the selected radio button.
Modify the code in mainwindow. Save all of the modified files, build the program and run it. Clicking any radio button should update the text label with the text of the selected radio button. Your email address will not be published.