ThemeOverlay_MaterialComponents_MaterialAlertDialog_Background) . mullr. answered Jul 21, 2017 at 9:49. and draw the pixmap there. 12. style. Like this one - Q_PROPERTY(QColor color READ color WRITE setColor) and in setColor method of this subclass you should change color. blue) self. neurd. setStyleSheet(. All derivatives of QAbstractScrollArea, including QTextEdit, and QAbstractItemView (all item view classes), support scrollable backgrounds using background-attachment. The width of the side docks is being set but the background color Feb 25, 2017 · Learn how to customize the background of a popup menu in Android with step-by-step guidance on Stack Overflow. FramelessWindowHint) # Remove window frame. 1 and tested on Symbian devices. As you can see, it is invisible when created. setStyleSheet('QMainWindow { background-color: white; }') # Initialize the PyQt application app = QApplication([]) window = MainWindow() window. Without this flag alpha-channel doesn't work and you get black window. If it can't be done easily in the designer, it is pretty painless to do in code. Well I used to write code in Autoit and work on Windows. getWindow(). In Kotlin, I was able to change the background color like this: var card: CardView = itemView. imgur. I know I can create a frameless windows (but then resizing doesn't work) and style my own window, I can also change the background colour of the window, but the border colour. Turn Dark theme on or off. When you cancel dialog, set it to View. new MaterialAlertDialogBuilder(AlertDialogActivity. WHITE); Only requirement is that your "base" element in the activity_whatever. 以下是一些 Nov 29, 2023 · self. property PᅟySide6. setCardBackgroundColor(ContextCompat. bkgnd = bkgnd. The background color is the color you want to use as your dim color. QtGui import *. g. If you name your widget windows ( using setObjectName() ) you can give each the one you want. setFixedHeight(800) # Set the fixed height to enforce portrait orientation. Apr 7, 2011 · If you want to set through xml using android's default color codes, then you need to do as below: android:background="@android:color/white" If you have colors specified in your project's colors. And QPalette is the palette, we can place any color on it. Improve this answer. In android studio, the background color is blank in the design view. ui, mainwindow. Select Android as a Target. Here are the detailed steps to follow: 1. 0. AnimatedDocks. Stacked (z) in front of one another. Qt. If you do not specify a selector when using a stylesheet, the properties of the child widget may also be affected. The user can drop one dock widget “on top” of another. qss") Dec 8, 2020 · I would like to add a background image to my main window without changing the background image of pushbutton in it and also need to keep the aspect ratio. public void onCreate(Bundle savedInstanceState) {. Start with QMainWindow. I am trying to change the background color of the window to black. I have this code so far. 5. If you only want to color the body of one tab then you can add a container/view inside that tab, then you should be able to set the container/view background color in the XML like normal, for example the following will set the background to red android:background=FF0000 – Oct 9, 2012 · Hi, I want to change the backgroundcolor of QMainWindow. you are welcome, it's a good practice. 为了改变主窗口的颜色，我们使用setStylesheet（）方法。. Nov 25, 2021 · QStackedLayout. Dec 7, 2015 · I want to set background color for my form. answered Aug 17, 2015 at 7:27. getColor(Color. Asking for help, clarification, or responding to other answers. id. #ifndef QBACKGROUNDIMAGE_H. io/topic/85837/change-window-title-bar-color-in-windows. The docks on the left and right are not resizable and the separator doesn't have the color applied. Example #1: from PyQt5. background : red; QToolBar { background : red } QToolButton {background : red} Nov 29, 2017 · I have a class derived from QMainWindow and other widgets derived from QWidget. xml has an id which you can reference in Java Oct 25, 2014 · 4. the url needs fixing: no quotes nor 'r'; simply the file name (maybe the space in the file name needs escaping, you could try to play with it) This, for instance, works: import sys. Qt has QMainWindow and its related classes for main window management. width: 2px; height: 2px; background-color: #B8CDD7; } The dock on the bottom of the screen is resizable and the separator has the color correctly applied. Equivalent to specifying background-color, background-image, background-repeat, and/or background-position. QMainWindowは、GUIアプリケーションではポピュラーな、タイトルとフレームを備えたウィンドウウィジェットを提供します。. i have searched the internet and the forums for a solution and they are what i have done before, so thats why i am asking for a little help. body { background-color: #fff; } I am using QWidget selector but i only want to change window background; And how i can ise one stylesheet for all windows? Mar 2, 2017 · Just select your central QWidget and press a make-layout button. s Jan 23, 2023 · By default combo box is of grey color although we can change its color. This code below will certainly crash ,after running a little while. When a dock widget or tool bar is dragged over the main window, the main window adjusts its contents to indicate where the dock widget or tool bar will be docked if it is dropped. 2. setTitle("Dialog") . The two widgets are stacked and a tab bar appears for selecting which one is visible. design_bottom_sheet) did successfully find the FrameLayout, I decided to avoid explicitly calling out the internally defined id by using getView(). Mostly use a white or #FFFFFF Aug 13, 2021 · Qt5再入門: QMainWindow. Identical to the animated property. self. getBackground() . 105 8. learn_def_card) card. if you want change the color of ActionBar just do this: ActionBar bar = getActionBar(); bar. Then in the QMainWindow instance instead of using setMenuBar you can use setMenuWidget in order to put your widget in the menu bar position. show() # Run the PyQt event loop app. Is there a special stylesheet tag for the empty centralwidget area? Jan 15, 2018 · Simple Use. QMainWindow comes with a default menu bar, but Jul 21, 2017 · First : Click on StyleSheet. This property holds whether manipulating dock widgets and tool bars is animated. Syntax : setStyleSheet (“background-color: grey;”) Argument : It takes string as an argument. setColor(QtGui. In the above piece of code, we use the setStyleSheet() method To indicate to the user that the field is mandatory, one effective (albeit esthetically dubious) solution is to use yellow as the background color for those fields. setBrush(QPalette::Background, bkgnd); this->setPalette(palette); Thanx in advansed. getParent(). . Choose the ‘Themes’ or ‘Background’ option within the settings menu. OFF state of combo box is basically when the drop down menu is not open. 3. Sep 4, 2019 · 4. So if you want to set a fixed height then set that height in the container: ButtonsFrame. A menu widget can be either a pull-down menu in a menu bar or a standalone context menu. I tried changing the background color of a fragment, but a small problem occurred. Jan 11, 2022 · QStackedLayout. In newer devices, the background is just white. answered Aug 29, 2011 at 6:22. exec_() ``` In this example, we set the background color of the QMainWindow to white. Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question. We have to address the berry::IQtStyleManager to tell the BlueBerry workbench to use a specific Qt-Stylesheet. To add a menu bar to the main window, create the menus, and add them to the main window's menu bar. Now, if you want there to still be some background color, apply a QFrame to your window, and place all child objects within it. INVISIBLE again. Only problem is to give a rounded corner i have used an alpha channel in the png file. List of Stylable Widgets. The following table lists the Qt widgets that can be customized using style sheets: Widget. On older devices, the background is light gray. container); bgElement. QtWidgets. Background, QtCore. The Application Main Window provides the framework for building the application's main user interface and are created by subclassing QMainWindow. @Override. Share. 6 with a simple apps that only has a QMainwindow with a background image (set via the stylesheet property to an image in a ressource file). May 27, 2020 · you need to use setStyleSheet at some point. QtWidgets import QApplication. I can change color of separator, but no any stylesheets about the possible location. To use it in PyQt5, simply add the following lines to a project: import sys. On your phone, open the Settings app. layout. Retrieved from "https: Apr 23, 2013 · I only want to affect the background of QMainWindow. Add at least one widget on your MainWindow. A handy way to customize the look and feel of PyQt widgets is to use CSS style sheets. The simplest solution I have found is to change the background color programmatically. import sys. I have managed to do it before but now it just won't work. Sep 29, 2009 · Also this code for setting the background color as well programmatically: image. scaled(this->size(), Qt::IgnoreAspectRatio); QPalette palette; palette. Nov 29, 2017 · I have a class derived from QMainWindow and other widgets derived from QWidget. I was cross compiled qt4. setColorFilter (0x3FFF0000, PorterDuff. png(QMainWindow change background)! I tried using: @QMainWindow {background: #5f5;}@but it strangely only affects the corner around the DockWidget (cyan). com/X6vUy0y. Sep 14, 2023 · The first method to change the background color in Android Studio involves utilizing the default theme settings. Supports the box model. Our main goal in this section is to create a custom title bar. Feb 18, 2016 · QMainWindow { background-color: red; } But I don't know how can I style "dockable windows" when they are docked, if I apply: QDockWidget { background-color: green; } I get the green colored window, but how to style the background of a docked one? I tried: QMainWindow QDockWidget { margin: 10px; background-color: blue; } Mar 28, 2014 · I have a PNG file to uses as a QMainWindow background and i am setting it using Stylesheets. At first glance css property background-size is not supported, border-image would strech the image. qt. setBackgroundColor(Color. e Override, the paintEvent of the QWidget. Pull-down menus are shown by the menu bar when the user clicks on the respective item or presses the specified shortcut key. It's pretty simple when we use a style sheet. QMainWindow. 语法： setStyleSheet (“background-color: gray;”) 参数 If you want to customize the background color of the snackbar in your Android app, you can find some useful tips and solutions in this question. So in the constructor in mainwindow. I notice that on different devices, the recyclerView actually had a different background. I want to change color of title bar of mainwindow, but i can't find title bar in design mode. main); So, shown above is the code I had for my main class that calls the XML file for the fragment. QPalette. centralWidget. A light red background would be View. 5, but can't find any solution. R. I would like to change the colour of the (top) border and the titlebar of the window of my application in Qt 5. 8 with the transparent background property i was getting black background. xml, then use: android:background="@color/white" If you want to do programmatically, then do: linearlayout. Then select your window by clicking on it and click on the VerticalLayout Button at the top of QTCreator. Follow Nov 30, 2020 · I was trying to change the background color of a QPlainTextEdit widget to black and apply a glow effect to it. Apr 8, 2021 · The layouts are managers of the geometry (position and size) of the child widgets of the parent widget where it is set, so they use additional information (such as sizeHint, sizePolicy, stretch factor, etc). In this case would be the following one: you can use Qt class name before QSS, like QMainWindow { background-color: rgb (0, 0, 0);} in your example QMainWindow > QWidget { background-color: rgb (0, 0, 0);} maybe better. Aug 7, 2017 · Please edit the question to specify your exact problem in implementing this. If a add a QLabel on the this window and set it's background-color (also via stylesheet), the resulting label is not opaque. Mar 25, 2017 · I want a light blue color in my application, precicely #99ccff in html color codes. You can keep the link if you want, but we prefer code blocks here as links can break in the future. Here, you’ll find a variety of options to change your message background. ForceTabbedDocks 在上面的代码中，我们使用了 QMainWindow::title 选择器来选择窗口标题栏。. Provide details and share your research! But avoid …. So my question is, where does this gray color come from? How can I change it universally to Apr 27, 2017 · android:visibility="invisible"/>. The channel is transparent but underneath it I am seeing grey color (instead of being transparent) thanks to QMainWindow. Note that the QMainWindow::menuBar () function will automatically create the menu bar the first time it is called. setStyleSheet("QMainWindow {background-color: #000000}"); changes the background color of menubar, but not of the centralwidget. clearColorFilter (); Dec 9, 2018 · QMainWindow{ background-color: rgb(0, 0, 0) } Just add this styling in your stylesheet, and it will work. Do it in your constructor right after the ui->setup() call. I prefer to do it this way instead of writing tedious line sof code :) – marouane18. <your-desi‌ red-color>, PorterDuff. Jan 5, 2024 · Step 3: Select ‘Themes’ or ‘Background’. QMainWindow. The background color of the label is not fill with the color I choose. setFixedHeight(300) May 6, 2020 · This is in accordance with what is documented in Qt Style Sheets Reference – background: Shorthand notation for setting the background. This only applies to the window's background, and not the children objects. I kept the background color of main window to be gray within ctor as below: setStyleSheet("background-color:gray;"); setAutoFillBackground( true ); All the widgets take the background color from main window. argv) window = QMainWindow() dock1 Main Windows and Dialogs. WHITE); For GUI customization, we will modify the Qt-Stylesheets files already used by blueberry applications. I can use something like: @QWidget {background: #6af;}@but then everything turns "blue". To set the background-color is fine, but my interface has a Qwidget that changes its background-color at certain point. my_qframe - >setStyleSheet (". What you can do is use names. selected)) Then if you want to remove the color, you can do this: Mar 26, 2020 · In order to change the color of the main window we use setStylesheet() method. You'll need to create your own style to customize it. Nov 12, 2020 · I am beginner and just began learning Qt. https://forum. Then click on add color and choose your background color or whatever. Nov 27, 2023 · Next, we set a fixed size of 28 by 28 pixels for the three buttons using the setFixedSize() method with a QSize object as an argument. Modify the source code and when Aug 27, 2015 · 2. In here I will pass the image read by QPixmap to QPalette, and then pass the QPalette object to our Sep 18, 2018 · How do I set a background color for the whole window of a Qt application? 0. "QMainWindow(background-color: rgba(255, 255, 255, 255);}". setBackgroundColor(getResources(). Sep 9, 2013 · 2. Stop Dark theme from automatic turn on. findViewById(R. setWindowFlag(Qt. To add a menu bar to the main window, we simply create the menus, and add them to the main window's menu bar. this, R. Builder(this); builder. Builder builder = new AlertDialog. May 10, 2019 · QMainWindow::separator {. Here is the sample widget code, i hope it helps. setMessage("Message Sep 19, 2019 · In fact, the background is unexpectedly set, but we need to introduce two new components: QPalette, QPixmap. For example: QLineEdit *nameEdit = new QLineEdit(this); nameEdit->setProperty("mandatoryField", true); QLineEdit Aug 29, 2011 · 1. and if you using ActionMode This is the style used for any ActionMode. This returns the part of the window flags that represents whether the window is a dialog, tooltip, popup, regular window, etc. AllowNestedDocks. setBackgroundDrawable(new ColorDrawable("COLOR")); see the following link for more info. A sample of the theme is here. 8 to Mips and i was working on MIPS platform. Thank you. 67. setColorFilter(Color. Learn how to use XML, Java, or Material UI to change the color of the snackbar according to your preference. How to change them into a single color (qss or code)? Thanks very much! Environment: Reproduction Code: app: QApplication = QApplication(sys. QFrame { background-color:yellow; }"); Mar 2, 2016 · Using the color filter, colors look much better because it won't be that "flat" color but a nicer tone of the chosen color. Navigate to " File " in the top menu and select " Settings " (or " Preferences " for Mac users). Enter project name and path to its directory. Within the Qt-Stylesheet-Files, all widgets can globally and locally be addressed inside the main window for style changes. First, we would use the following application-wide style sheet: *[mandatoryField="true"] { background-color: yellow } This means that every widget whose mandatoryField Qt property is set to true would have a yellow background. super. You can also design and lay out your interface graphically using the Qt designer. Since most are children of the main window, they all get the color. MULTIPLY); Source: another answer. animated: bool #. BLUE); Here mLayout is your parent RelativeLayout. You can change that behaviour by changing the selector: Qt Code: Switch view. after updating the qt version to 4. I have a vector asset (from the Material Icons) that I want to change the fill color. Open up your XML layout file containing your Navigation View widget, and add the following line to the widget's attributes: Press File > New file or project… and follow the instructions of the wizard. 用PyQt创建桌面程序的第一步是让一个窗口显示在你的桌面上，在这篇文章中，我们将看到如何改变这个窗口的颜色。. QPalette() palette. OS: Windows 7-10 (not a choise) Python: 3. Current code (not working) Sep 13, 2017 · I am really new to PyQt4(just learned what it is two days ago) and I know that this question probably has a really easy answer but I can't find it anywhere. Jul 21, 2017 at 10:05. Jul 25, 2014 · Hi there! I am having difficulty setting up a background image for the main window. getColor(); If It is RelativeLayout then just find its id and use there object instead of LinearLayout. setPalette(palette) Althought that changes the color to blue, it is not the type of blue that I want. Dec 24, 2014 · To change the background color in the simplest way possible programmatically (exclusively - no XML changes): LinearLayout bgElement = (LinearLayout) findViewById(R. I tried to find a stylesheet - without result. Nov 29, 2017 · background-color:gray; it means for all widget and its children (and so on) since you are not using a specifier like name or type. getBackground(); int colorId = viewColor. In my application, I have: palette = QtGui. 3. setStyleSheet("background-image: url(The_Project_logo. Jun 25, 2018 · Here's a post from @mrjj that shows you how to do it in windows with native calls (Qt doesn't have a call for it) in case you insist on forcing a color on your users. You get articles that match your needs; You can efficiently read back useful information; You can use dark theme To get background color of a Layout: LinearLayout lay = (LinearLayout) findViewById(R. Mar 20, 2018 · Hello, yes i mean the possible location color. setMessage(R. Sep 8, 2014 · Start with a QMainWindow, and then apply the appropriate flags to it. Select Qt Widget Project and Qt Gui Application. app = QApplication(sys. PyQt: 5. Here is how you can do that, mLayout = (RelativeLayout) findViewById (R. If you see a dark color scheme but didn’t turn on Dark theme, it could be that battery saver is on. 除了可以改变窗口边框顶部的颜色，我们还可以通过样式表来改变窗口的其他样式，比如窗口背景颜色、字体、按钮样式等等。. WindowStaysOnTopHint) # Keep the window on top. Mode. 3 QListWidget change part color of text Qt::WindowType QWindow:: type () const. like this. import breeze_resources. h, and main. 2. Here's the code: Dec 24, 2015 · So you would need to subclass every widget that you want to change background color and create your own property for them. When the project is created open the Projects view and verify the configurations for Build and Run settings. findViewById(com. Oct 9, 2012 · I want to change the backgroundcolor of QMainWindow. May 2, 2019 · @Devopia53 said in How to use animate SVG and Overlap: @RiceBall. i tried with. python. AllowTabbedDocks. QMainWindow is a subclass of QWidget. QtWidgets import QApplication, QWidget, QLabel, QMainWindow, QPushButton, QAction. QMainWindow::centralWidget (); returns a NULL-Pointer. setStyleSheet ("QMainWindow {background-color: #000000}"); changes the background color of menubar, but not of the centralwidget. Context menus are usually invoked by some special PyQt5 – 如何改变主窗口的背景颜色. Tap Display. #define QBACKGROUNDIMAGE_H. チブル・システムズ. QMainWindow has its own layout to which you can add a menu bar, tool bars, dockable widgets and a status bar. VISIBLE. i. The QVBoxLayout, QHBoxLayout and QGridLayout. Identical to the dockNestingEnabled property. When battery saver is on, Dark theme May 28, 2016 · I had to wait until after setContentView was called in onActivityCreated in order to access the container. Also edit the question to add your code in code blocks. QtWidgets import *. You Vertical Layout is automatically added to the central widget and fills all the surface. MainWindow::MainWindow(QWidget*parent Jun 1, 2024 · # Set the stylesheet to change the background color to white self. Jul 27, 2015 · I am not 100% sure what you are after. Set background of QMainWindow central widget. QObjectは、Qt全体で重要なクラスです This means that every widget whose mandatoryField Qt property is set to true would have a yellow background. getColor(main,R. First, we would use the following application-wide style sheet: *[mandatoryField="true"] { background-color: yellow } Jul 24, 2015 · So the best way of solving this issue is changing the background for that widget. How to get this done? Thank you. In order to do this we have to change the style sheet code of the combo box, below is the style sheet code. Depending on the app, you may have pre-set themes to choose from, or you might be able to select an image from your gallery. MULTIPLY); To "remove" the color, just use View. from PyQt5. Jun 17, 2015 · Mind that child widgets may inherit the transparent background of parent widget by default unless you specify "background-color: rgba(255, 255, 255, 0);" for them or limit the visibility of upper stylesheet somehow e. setCancelable(false); builder. When I created a new project, it has mainwindow. parseColor("#FFFFFF")); This code for the same programmatically: image. onCreate(savedInstanceState); setContentView(R. As you can see, there are three positional layouts available in Qt. Jan 8, 2020 · The list widget will not be going green because of the QFrame style above, which only mentions yellow. Dec 3, 2014 · because the code that i have now ill only give me a tiled appearance when i re-size the GUI. Here we're using code, so you can understand the underlying system. You can add new menus to the main window’s menu bar by calling menuBar () , which returns the QMenuBar for the window, and then add a menu with addMenu () . QAbstractScrollArea. cpp, you put Nov 29, 2015 · First set your background to be completely transparent. Lalit Poptani. The QListWidget class inherits from QFrame so it can be affected by a style selector "QFrame". You can also call QMainWindow::setMenuBar () to use a custom menu bar in the main window. See also flags () and setFlags (). setBackgroundColor (Color. pyside. Apr 15, 2016 · While other answers provide change style (which will affect all menu items, and, as I understand, need is to change one menu item), I propose you to use android:actionLayout attribute to implement your custom layour for menu item. 1 version. You can create a widget with a QVBoxLayout, in which as first element you insert your custom title bar that will appear on the top, and as second element the menubar widget. You can set transparency for widget with color with alpha-channel like this: setStyleSheet("background-color: rgba(255,0,0,50%);"); But this doesn't work for top level widget until you set the WA_TranslucentBackground flag. Jun 12, 2015 · There are many ways to set the background color to window, I will give you one simple technique. Nov 20, 2012 · If i set background to red or any other color it is getting reflected on my mainwindow. It turns out this is very easy to implement using Qt Style Sheets. Jul 27, 2015 · Even if I change the background color of my whole window, the area of toolbar is not affected: This is an empty default Qt widgets application where I only added a QToolBar and one QAction and in the stylesheet of my QMainWindow. id_nick_name)). I'm using Qt version 5. setFixedWidth(480) # Set the fixed width to enforce portrait orientation. Qt implements menus in QMenu and QMainWindow keeps them in a QMenuBar . 7. Launch Android Studio and open your project. getBackground (). Header file. cpp, mainwindow. Customize Window Flags. My mainwindow is transparent while i was working with the Qt4. marouane18. Tip: Dark theme can make your screen easier to read and can save battery on some screens. まず、ヒエラルキーを見てみます。. 2021年8月12日 16:34. argv) file = QFile(":/dark. #include <QtGui/QMainWindow>. !http://i. QMainWindow has its own layout to which you can add QToolBar s, QDockWidget s, a QMenuBar, and a QStatusBar. But when I apply a DropShadowEffect to a QTextEdit or a QPlainTextEdit widget, its background color reverts back to the original and refuses to change. xml file. pyqt. You can remove the border if you want with this. 4. 2 I want to create a custom title bar in qt. I also need the background to resize on MainWindow resize. get the instance of the root layout of your xml and set it's background color from your code as you Oct 27, 2015 · I need to resize the image to cover the app, atm I have a window 300x200 and background image 2400x1800. Oct 3, 2015 · Android Studio now supports vector assets on 21+ and will generate pngs for lower versions at compile time. lay1); ColorDrawable viewColor = (ColorDrawable) lay. example for QLabel below: Apr 16, 2015 · Changing the background color of QTabWidget. Feb 13, 2023 · Unfortunately this is not possible on Windows. A main window provides a framework for building an application's user interface. QMainWindow::centralWidget(); returns a NULL-Pointer. Mar 11, 2011 · I'm using Qt 4. Qt mainwindow transparency Dec 25, 2013 · 18. void QWindow:: unsetCursor () Restores the default arrow cursor for this window. Jul 4, 2015 · You don't set the drawable for the background of a Navigation View item in your styles. Jul 27, 2012 · 34. QAction s are added to the menus, which display them as menu items. This does not require dealing with any 9-patch images: ((EditText) findViewById(R. How to Style. color. class Window(QMainWindow): Both ways to change the background color of QWidget have been successfully built using Qt SDK 1. myRelativeLayout); mLayout. 3k23163244. Jun 3, 2017 · With the Material Components Library you can just use the default MaterialAlertDialogBuilder:. So you'll need to find it in you Activity and set it's visibility before you launch the dialog to View. Returns the type of the window. QMainWindow { background-color: #444444; } QMainWindow::separator:hover { background: red; } I want make this, for example: Aug 13, 2021 · Register as a new user and use Qiita more conveniently. WHITE)); The color depends on your choice of which color you want to use for transparent. QtCore import QFile, QTextStream. Then, for each mandatory field widget, we would simply create a mandatoryField property on the fly and set it to true. As the name suggests, QPixmap is a pixmap, we can read the image in. png); background-repeat: no-repeat; background-position: center") Jun 26, 2017 · 1. from PyQt5 import QtCore. This background color only appear when combo box widget is in off state and mouse hover over it. Mar 9, 2012 · The picture bellow is a pyside6 application's capture, I move all QDockWidget into a single group, but the group's header's background has two different color. 然后，我们将 background-color 属性设置为红色。. The center area can be occupied by any kind of QWidget. Oct 16, 2014 · How can I change the background color programatically of a dialog box? AlertDialog. Also while getDialog(). That will cause the program to crash, and the crash stops when I comment out the color changing code. The Menus example demonstrates how menus can be used in a main window application. cpp. oj ty yq tp cy rj fq ua tx xk