Qcombobox set default text Make line edit object from combo box 3. removeItem() and all items can be removed with PySide. If set prior to populating the combo box, the pop-up view will not be affected and will show the first column (using this property’s default value). html#currentText-prop Apr 18, 2013 · I would like to set the text of a QComboBox to some custom text (that is not in the QComboBox's list), without adding this text as an item of the QComboBox. See also itemData(). the 0th key) as the QComboBox's default item to be selected when it loads? I tried: self. The flags available for horizontal alignment are: void QComboBox::setEditText ( const QString & text) [slot] Sets the text in the combobox's text edit. . 04) and I was able to change the text color of all items with a stylesheet but I cannot Oct 8, 2015 · I have found out that I can use setEditText(const QString &) to specify the default display text, like "-- Choose --". The current item can be set with PySide. By default the combo box text is left align and combo box don’t have any alignment method of its own. If not, following code may give you a hint. It works but it seems a little weird. if i have the handler to that combobox, which function should i call to set the combo box current text Oct 21, 2013 · cmb->setModelColumn(0); // Set default text of selected item to column 1 i. The insertPolicy property allows you to set whether the combobox should insert entered items in the list. Sep 29, 2015 · There is no way to set place holder text for QComboBox. But when run the application the given text disappeard and the initial index value of a comboBox item appeared, Which is from the DataSource. I tried a few things from the documentation and was only successful on setting it to a Qlabel. 6, Ubuntu 10. int count. 0. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Jan 19, 2023 · In this article we will see how we can set the icon size to the item of combo box. Selection property. Besides, why is my non-editable QComboBox displaying a seemingly arbitrary string that has nothing to do with the provided index? Jun 23, 2017 · Tried using textvariable and insert but it didn't work. After that, there is no connection between the data in the editor and the data in the model until the editor is closed (by leaving the cell etc. When this function is called before items are added the placeholder text will be shown, otherwise you have to call setCurrentIndex(-1) programmatically if you want to show the placeholder text. But, this works only with editable QComboBox widgets, which I wouldn't want to do. Example: Now I want to set a comboBox to a second item knowing only string value of the item: 'item02'. when i select an item from the drop down box, all the items are displayed in a size 14 font. Aug 15, 2018 · The setter setCurrentText() simply calls setEditText() if the combo box is editable. AlignmentFlag namespace. In the same time you tried to find item by its userData which was empty. If this property is not set, the default value is whatever is set for the palette’s HighlightedText role. 15 the placeholderText property was introduced - link to documentation. The Qt manual says setFont will set the font for both the comboBox button and the comboBox popup list to font. 0 (MSVC 2013, 32 bit) - Windows 10 Hello, qApp->setStyleSheet("QGroupBox, QComboBox, QRadioButton, QPushButton, QLabel, QLineEdit" "{ color: blue }"); // text colour ui->myComboBox->setStyleSheet("QListView { color: blue; }"); ui->myComboBox->setStyleSheet("QComboBox { background-color: white }"); I'm trying to set the text colour and the dropdown list text Oct 17, 2016 · After 2 years, I saw this question. Jul 14, 2012 · The code below shows an additional fix for a strange bug where one cannot change the color property of the text correctly. May 3, 2016 · Hello Experts, I have Two Combo Boxes, One is Dependent and Another and The values are Coming from ODATA to the Dropdown Boxes,. void QComboBox::setItemData ( int index, const QVariant & value, int role = Qt::UserRole ) Sets the data role for the item on the given index in the combobox to the specified value. The indexes work the same a python lists. Apr 2, 2020 · In this article we will see how we can set or disable the frame of the combo box. By default, users can only select from the QComboBox options. With the given implementation, I just use the second argument of QComboBox::addItem(const QString &text, const QVariant &userData = QVariant())) function that sets the item's Apr 2, 2020 · In this article we will see how we can center align the text of combo box. This function was introduced in Qt 5. But I can't work out what css selector to use to change the style of the text items in the drop down list. Dec 27, 2023 · Allowing User-Entered Text. For example: The new value is passed as text. The text of the current item is returned by PySide. Jan 31, 2016 · How to set non-selectable default text on QComboBox? Related. Unfortunately Richtext is not an option for me. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | I cannot figure out how to change the text color of one particular item of a QComboBox. I have tried various solutions but with no success. To do that, set the . What I hope to achieve is this: But the text wont be stored as a value inside the combobox just a default text when you haven't selected any An item can be removed with PySide. For Eg. The item is appended to the list of existing items. Here is an example. Jan 28, 2019 · Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand QComboBox: The frame around the The color of the placeholder text can be set using the placeholder-text If this property is not set, the default is the Jan 6, 2017 · I looked at the source code of QComboBox and it is drawn using the complex control mechanism defined by each style. Apr 25, 2013 · How to set a default text to QComboBox. The advantage of using this method is that you don't need to set the second parameter when you add an item. 04 Qt Designer를 이용한 UI의 제작과 연결 02. By default there is no icon set to the icon in the combo box although we can set icon to each item with the help of setItemIcon method, sometimes there is a need for adjusting the icon size. If the combo has DropDownListMode, you can handle WM_PAINT or set it to owner draw to draw hint Oct 30, 2018 · I want to set the value (string ) of the QComboBox programmatically as if the comboBox was clicked by the user from the ui. setCurrentIndex(). Attempt: Change the blockformat: Dec 13, 2012 · To get the index from QComboBox change event of QComboBox item use: connect(ui->comboBox, SIGNAL(currentIndexChanged(int)), this, SLOT(indexChanged(int))); in mainwindow. [since 6. Oct 29, 2015 · I'm struggling to set the padding of the text items on a combobox drop down. setFont(font) Argument : It takes Font object as Apr 26, 2012 · How to set Default Text Statement in QComboBox If this is your first visit, be sure to check out the FAQ by clicking the link above. Sep 5, 2021 · Current text: w Current text: wq Current text: wqe Current text: wqew Current text: wqeww Current text: wqewwq Current text: wqewwqe By default the insert policy is set to QComboBox. If this property is set to TRUE then the combobox will resize itself whenever its contents change. 7 using pyqt 4. , "Select an option", as shown below. findText, which will return the index of the matched item (or -1, if there isn't one). Now, when the user deselects all of the items, "None" should be the text of the dropdown menu. You can set hint for ComboBox without adding to items. Jan 28, 2015 · If you want to set the opening value in the editor, either from the model's current value or a default value, then you do this in setEditorData() as in your example. Figure: QComboBox QComboBox icons. modelColumn ¶ Return type:. 3] void QFontComboBox:: setDisplayFont (const QString &fontFamily, const QFont &font) Sets the font to be used to display a given fontFamily (when the combo Jan 21, 2021 · In Qt 5. The problem is that i have no handler to that comboBox to call the function that will set the value of the combobox 2. Combobox (in the example) is the placeholderText property of QComboBox: self. How should I set "Maya Executable" (i. setData() is going to give you the currently selected string, which you can then convert to the integer. For QComboBox, the selected item has the correct font, the but the dropdown list items are using the default font. Add a default item to the combo box that serves as a placeholder. Create a combo box 2. Aug 13, 2013 · Hello, I have a QComboBox that is tied to a model. Returns the sample text to show after the font name (when the combo is open) for a given writingSystem. how do i May 7, 2013 · QComboBox *comboBox_test ; comboBox_test = new QComboBox(this); comboBox_test ->setGeometry(QRect(10, 10, 50, 20)); comboBox_test ->insertItems(0, QStringList() << "A" << "B"); What I would like to do is to set the "B" as the default value. The alignment is specified by using a flag from the Qt. The default policy is is AtBottom but you can change this using setInsertPolicy(). 1: Implement custom model. It doesn't take any arguments, meaning that the combo box will be created with default settings. , setItemData() and itemText()). Any help 초보자를 위한 Python GUI 프로그래밍 - PyQt5 01. If the user selects some of the items, "Multiple" would be the text. Apr 11, 2011 · Hi, I want to create a combo box so that it has some default text and whenever an item is selected form dropdown menu the item gets appended to default text. This behaviour is achievable on an editable QComboBox with QComboBox::setEditText(const QString & text). When the user enters a new string in an editable combobox, the widget may or may not insert it, and it can insert it in several locations. for items in item_all: self. Get this property's value with count(). You can also set a new model and view (with setModel() and setView()). To do this we can find the index of that item and set the current index of the combobox. comboBox. To allow free form text input, enable editable combos: combo. It shows up just fine, but I can't get it to set as the default selection in the QComboBox. int. But if user selects the text, deletes it, and selects other control element (combo box looses its focus), your text won't be there The text is not accessible in the dropdown list. My understanding is the whole thing is the QComboBox widget, and the drop down part is a QListView. The alignment is specified by using a flag from the Qt namespace. You've got to say "hey, cbo, here's the text I want you to display!". In order to do so we will use setFont method which takes QFont object as argument, using it with the check box object will change the font of all the items present in the list. In order to center align the text we have to do the following - 1. PyQt QComboBox example # The following example uses the QCombobox class to create a Mar 16, 2025 · Qt Combo Box Constructor . This ensures the font face remains in keeping with the desktop conventions. 01 PyQt란 무엇인가? 01. appendRow(item) PS: If you want to reset one of the item properties, set it to None, like this: May 5, 2017 · When going to set the text property for a ComboBox. However, you can enable editing to allow users to input custom values. I am now looking at changing the selected item in a combobox without having to click it. Oct 22, 2011 · font question: in the gui builder, i have selected a size 14 font for the combobox. text – str. QComboBox { background-color : lightgreen; } Below is the implementation Apr 30, 2015 · Actually, there is no new text, what I want to set is just one of the drop down list. The default is FALSE. Mar 16, 2025 · Use setCurrentIndex() to set the default item as the initial selection. By default a QStandardItemModel stores the items and a QListView subclass displays the popuplist. QComboBox. while, by default, the popup is a QListView, that can be overridden with setView() using any subclass of QAbstractItemView; 2. How can I wait until data comes in when reading data over Serial Port? QT C++. The flags available for horizontal alignment are Aug 24, 2023 · In the event handler, we set the selected text to the label and adjust the label's size to fit the text. We would like to show you a description here but the site won’t allow us. Oct 2, 2015 · I have a combox, and want to add the vaue selected in the box to a variable. NoInsert so entered values will not be added, just set as the value of the combobox. setEditable(True) This adds a text field users can type into: The text field also shows autocomplete suggestions from the dropdown items. Thanks for the help. font() font. In order to extra new “Options” or “Items” to the QComboBox, use the addItem() method on our QComboBox object I override paintEvent() method, and setFont() method works OK for all widgets except for QLabel and QComboBox. userData – object May 5, 2019 · Font tip Note that if you want to change the properties of a widget font it is usually better to get the current font, update it, and then apply it back. For example:. userData – object. So i gave the ComboBox text in the Form load. Apr 2, 2020 · By default combo box is of grey color although we can change its color. I want to create a default text placeholder (without making it editable), so I added my placeholder text as the first item in the model. Make combo box editable (optional) Another useful thing you may want to do is the set the item that shows by default in the combobox. 10, I've created a QcomboBox . setItemText(int, QString): argument 1 has unexpected type 'str' I do not know what type it was expecting or even if this is the best way to go about it. Use setEditText( const QString& ) slot for setting your text. http://doc. The Windows one might constrain the dropdown to be "inside" the combo, I don't know. In order to change the ico Apr 25, 2013 · How to set a default text to QComboBox. By default, the search does exact, case-sensitive matching, but you can tweak the behaviour by passing some match-flags as the second argument. 1 - Based on Qt 5. In order to do this we have to change the style sheet code of the combo box, below is the style sheet code. io Apr 25, 2013 · You just have to insert an additional item in your combo box with your default text and handle it's value accordingly in your application logic. List(1), as in: Jun 22, 2017 · If you mean the signal of combo box, when it's value changed, you can use. If this property is not set, the default is the font. setCurrentText() Oct 31, 2018 · One way to do it would be to search the set of strings that are loaded into the combobox (QCombobox::findText()). 2025-03-16. On a non-editable QComboBox, however, this function does nothing. PySide6. currentTextChanged or . Set an empty placeholder text to reset the setting. i have tried . 1. combo = QComboBox() model = combo. You may have to register before you can post: click the register link above to proceed. Set this property's value with setAutoResize() and get this property's value with autoResize(). currentIndexChanged Everytime a combobox is changed by user, these signals will be triggered. It would be very useful to instead have an initial descriptive text visible in the combo box(e. You need to set the text of the combobox. I didn't find the way to add that code of line which allows me to do so. namespace. setFrame(False) Argument : It takes bool as argument Action perf Aug 13, 2013 · I have a QComboBox that is tied to a model. addItem(items) the item_all list is working perfectly but I need it to start with the default value as Empty (note that item_all list is being called from a DB table so I can't have an empty value to use it) Feb 9, 2021 · Yes, there is QComboBox. Syntax : check_box. [signal] void QComboBox:: editTextChanged (const QString &text) This signal is emitted when the text in the combobox's line edit widget is changed. Here is a little example : Mar 24, 2018 · I'm on python 2. e. if that stylesheet is set for a parent (or the application) it would override any QListView subclass, so a proper descendant selector should be used instead; 3. I would appreciate any tips. Oct 17, 2013 · The problem in your implementation was that you did not set the items' userData, but only text. QComboBox() self. The flags available for horizontal Jul 19, 2016 · Qt Creator 3. setItemText("text choice") but that gives me the following error: TypeError: QComboBox. yet once selected, it displays the result of the item back in the default font. In the following example, we display icons with text in the combobox. Optionally, a combobox allows you to enter text if you set its editable property to True. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Mar 28, 2009 · The first one is easy. int currentItem Oct 3, 2011 · 使用填充有项目的常规QComboBox ，如果currentIndex设置为-1 ，则小部件为空。 在组合框中显示初始描述性文本（例如“--Select Country--”、“--Choose Topic--”等）会非常有用，而该文本未显示在下拉列表中。 May 13, 2020 · Font tip Note that if you want to change the properties of a widget font it is usually better to get the current font, update it and then apply it back. I was able to change the Background color of an item: comboBox->setItemData(i, Qt::green, Qt::BackgroundRole); (Qt::ForegroundRole had no effect at all, Qt 4. I want to set a myComboBox without using an item index number but its string value. Here is how I got it to work: Apr 2, 2020 · In this article we will see how we can change the size and font of all the items present in the list. setCurrentIndex(0) self. But you can solve this problem. Aug 15, 2018 · @Engelard You want to set the text in an editable QComboBox's QLineEdit widget to some string, right? In what way does ui->comboBox->setCurrentText(QString::number(i)); not work? Oct 7, 2008 · While the previous answers may set the background color for a non-editable QComboBox, they do not work for an editable QComboBox. model() for row in range(10): item = QStandardItem(str(row)) item. setPlaceholderText("--Choose One--") Share Using a regular QComboBox populated with items, if currentIndex is set to -1, the widget is empty. ) and the setModelData() function is Apr 2, 2020 · In this article we will see how we can set the icon size to the item of combo box. QComboBox { color: black; font: 14px; padding: 1px 0px 1px 3px; /* This (useless) line resolves a bug with the font color */ } QComboBox:focus { color: red; } QComboBox::drop-down { border: 0px; /* This seems to replace the Nov 21, 2015 · Hello, I'm implementing my "QCombobox set current data" and I’m in doubt about what is the better way? 1) using variable and QMapIterarot to manipulate data, and QCombobox. Text = to . The text is not accessible in the dropdown list. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Oct 29, 2012 · I'm trying to find a way to change the default text color of QTextDocument. Set a string through the string's index Sep 8, 2021 · Font tip Note that if you want to change the properties of a widget font it is usually better to get the current font, update it and then apply it back. setForeground(QColor('red')) font = item. QtGui. setFont(font) model. When running the code below i don't get any text in the QComboBox (unless of course i select one of the three items) Jun 21, 2018 · Hint, Cue Banner, Watermark or Default Text for ComboBox. 6. instead, the combobox is displaying the default font. clear(). You can also have a look at the method findText(const QString & text) from QComboBox; it returns the index of the element which contains the given text, (-1 if not found). By default, QComboBox is not editable, meaning users can only select from the provided options. This item can have a specific text or an empty string. This property holds the column in the model that is visible. To do so, if the ComboBox has DropDown or Simple mode, you can send a CB_SETCUEBANNER message to its inner edit control to set hint. I haven't found a way on how to set the header text of a QComboBox. Another way is to store it in your model as a special integer field that you set when the delegate calls setData() on your model. QComboBox label as you said is actually a QLineEdit, so you just need to set this component's font, and it will solve your problem. This property holds the number of items in the combobox. When this function is called before items are added the placeholder text will be shown, otherwise you have to call setCurrentIndex (-1) programmatically if you want to show the placeholder text. You can access the model and view directly (with model() and view()), but QComboBox also provides functions to set and get item data (e. when i build the app, the size 14 font is not displayed in the combobox. However using setPlaceholderText doesn't do anything for me. It's not like a listbox, where you can set the . setPointSize(10) item. Otherwise, if there is a matching text in the list, currentIndex is set to the corresponding index. PyQt의 시작 01. 12) the alignment of the text label is hard-coded to left-alignment as seen in the following code: Jun 13, 2022 · Some notes: 1. Selected ComboBox -> Property -> Text : "--Select--". 0. currentText() – returns the text of the currently selected item. cpp: void MainWindow::indexChanged(int index) { // Do something here on ComboBox index change } Whenever the text of an editable combobox is changed the textChanged() signal is emitted. In my case I have editable item in row = 2 (QString m_strEditableValue) and fixed items in 0,1 rows. We can also use top and left to move the indicator by a few pixels. QComboBox() This is the constructor's signature. Design page shows the given text. Note: Notifier signal for property currentText. I mean in the Oct 3, 2021 · Font tip Note that if you want to change the properties of a widget font it is usually better to get the current font, update it and then apply it back. For that case, you need to derive the QLineEdit widget used for the editing and reset its background. By default when we create a combo box it has frame although we can change it. The flags available for horizontal alignment are: Apr 25, 2013 · How to set a default text to QComboBox. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Jun 29, 2022 · QComboBox是Qt GUI库中的一个核心组件，它是一个复合型图形用户界面控件，常用于提供一种紧凑的方式来展示可选项列表。QComboBox通常表现为一个下拉列表框，包含一个文本标签区域和一个下拉箭头按钮，点击箭头时会显示出可供选择的项目列表。主要特点和功能 Let’s create a basic QComboBox widget using the QComboBox Class in the QtWidgets module from PyQt6. now i want to set one Default values to the Combo Boxes By default, the menu indicator is located at the bottom-right corner of the padding rectangle. PySide2. items. I don't know whether you have found a better method or not. addItems(self. The new text is specified by text. e label data ????? cmb->setCurrentIndex(1); // Select first row ????? Similarly when I use the signal slot mechanism to select an item from QTreeWidget and set inside QCombo box selected item , it does not work either for combo box. keys()) See full list on doc. h: private slots: void indexChanged(int index); in mainwindow. addItem (text [, userData=None]) Parameters: text – str. QtWidgets. Best regards messi. Example: Jul 22, 2019 · Solution is using model-view pattern for combobox and subclassing QComboBox. Below is the representation of normal combo box and colorful combo box. Syntax : combo_box. This function was introduced in Qt 6. "-- Whenever the text of an editable combobox is changed the editTextChanged() signal is emitted. In order to change the ico Jul 16, 2019 · He told me the long text got shortened, I think with ellipsis at the right-hand side, I guess so that the text wouldn't overspill the combo width. I have to go for plainText. Thanks in advance! Apr 25, 2013 · How to set a default text to QComboBox. Inside the parameters for QComboBox, pass the window object as a parameter (self) otherwise it won’t be displayed properly. Sep 24, 2020 · The equivalent to the set() method of the ttk. qt. In order to center align the text we have to do the following – 1. This provides guidance while allowing custom inputs. , "Select an option", as shown below Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | |Option 3 May 15, 2011 · This property is supported by all widgets that respect the palette and that show selection text. Unfortunately (as of Qt 5. See also setSampleTextForSystem(). 3. _qcombobox-widget: The frame around the combobox can be styled using the box model. Jan 23, 2023 · In this article we will see how we can center align the text of combo box and combo box should remain non-editable. If user selects an item in comboBox, item's text will be set. 02 Qt Designer의 설치와 실행 01. Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Apr 25, 2013 · How to set a default text to QComboBox. Adds an item to the combobox with the given icon and text, and containing the specified userData (stored in the UserRole). QComboBox. By default, the menu indicator is located at the bottom-right corner of the padding rectangle. By default the combo box text is left align and combo box don't have any alignment method of its own. Let's assume I can't index myItemsList to find out what indexed position of an item with a value 'item02'. [signal] void QComboBox:: highlighted (int Nov 30, 2017 · Which gives me a combobox with checkboxes, which is exactly what I want. g. The default policy is is AtBottom but you can change this using setInsertionPolicy(). Before : |Select a Catagory | On Click : |Option 1 | |Option 2 | Another useful thing you may want to do is the set the item that shows by default in the combobox. In this example, we set the editable property of the QComboBox to True, enabling users to input custom values in addition to selecting from the provided options. io/qt-5/qcombobox. In order to set or disable frame we use setFrame method. appExeCB. We can change this by specifying subcontrol-position and subcontrol-origin to anchor the indicator differently. The variable. appExeCB=QtGui. 03 Qt Designer의 화면구성 01. currentText(), and the text of a numbered item is returned with text(). In my Linux/GNOME, the dropdown just completely overwrites the combo and is wide enough to accommodate any text. wyvcbj mvfj hdta ehtna tmvoh nqh libshe enfo zmhyy yxu qafkp deywepma wsch owhs pehg