Qt change combobox. It seems to be the "highlighted" property.

Qt change combobox. To check or change the text field programmatically: text = combo. " like in the picture). Access functions: By default, for an empty combo box, this property has a value of 0. It works, my combobox turns white but its apparence looks like Windows XP Combobox My goal is to change the color of my combobox's background while keeping its Windows 10 appearance. 1. implicitContentWidthPolicy : enumeration [since QtQuick. 2. Display Features. Here's a breakdown of what it does:clearEditText() This is a method of the QComboBox class that specifically targets the editable text field within the combo box Oct 17, 2016 · When I change the font of my QComboBox comboBox->setFont(whateverQFont); it is applied on the dropdown menu as well (all the items), and it overrides the Qt::FontRole data I have set on my items with comboBox->setItemData(index, itemSpecificFont, Qt::FontRole); Jul 1, 2019 · Reading the documentation I cannot find a way to change the color of the text in a ComboBox (QtQuick. I could only find combobox->currentIndex() Is there a smarter way to do it other than combobox->itemData(combobox->currentIndex())? Jun 22, 2017 · If you mean the signal of combo box, when it's value changed, you can use. QML ComboBox style. myFunction ) But I need to be able to send the arguments from ComboBox to myFunction(). I want to do the same also when the dropdown is open. Here's a breakdown of what it does:clearEditText() This is a method of the QComboBox class that specifically targets the editable text field within the combo box See also highlighted () and currentIndex. currentTextChanged or . Jul 9, 2020 · Hello, I would like something like that: When I add next item to QComboBox, I would like to set its background color ( don't change that later ). Sep 5, 2021 · Drop-down selection widget. Typically you’d see this widget when a user needs to choose from a select number of items, like country or contract. How can I get the selected value? I searched for help but I couldn't find a method currentData() which I expected to find. Then, I implemented my 'load' function, which should load the saved data in interface ending with a refresher: normBox->setCurrentIndex(model->getNormIdx()); where model has accurate member normIdx. 5 and 5. I'm not sure if it's possible at all to make the combo box work as you want. Sep 22, 2022 · @Karoluss96 said in If current text/index is change in combobox: so close, but if-statements must be (in my point of view), because user can change the value/index EITHER in combobox_9 OR in combobox_10. Jul 16, 2019 · I have finally just discovered that changing the Qt combo's view width (QComboBox::view()::setMinimumWidth(), combined with measuring items' maximum width using QComboBox::fontMetrics()) is exactly how to widen the dropdown beyond the combo's width, and does work under Windows, as well as Linux/GNOME. Below is the code of the . But if I use: Signals¶. Comboboxes can contain pixmaps as well as strings if the insertItem () and setItemText () functions are suitably overloaded. PyQt combobox. 0 (Qt 6. When editing is finished, the editor (combobox) is destroyed and the view is updated with the text returned by the model using Qt::DisplayRole. @qt-1234. Qt models provide some predefined roles which are data fields specific to each index, and among those roles there is the BackgroundRole. in the "dropped down" state), you can change the colors for the Highlight and HighlightedText in the palette, or style the inner QAbstractItemView Nov 17, 2015 · but first item 'Sum' is not displayed in combobox when I create editor. What you want is: QPalette::Base Used mostly as the background color for text entry widgets, but can also be used for other painting - such as the background of combobox drop down lists and toolbar handles. . setToolTip("Select an item"); This code demonstrates how to customize the background color and add a tooltip to the combo box. To create a combobox, you use the QComboBox class: If one compiles the skyhisi's code then the combobox on Mac OS X doesn't look as combobox with native checkboxes. How do I do this? I am using Qt Creator for the above. 0)] This property controls how the implicitContentWidth of the ComboBox is calculated. This will populate the combobox's dropdown list with the items from the model. 15, old items are no longer deleted, and so the backgroundRect item will live longer than it needs to—typically until the application exits. 最近编写UI遇到了需要依据QComboBox选择不同的选项进行显示，在此进行相关总结。 使用到的方法：currentTextChanged QT中label与line edit显示与关闭的方法：show，close 以下为示例代码： # -*- coding: utf-8 -*… Jan 12, 2019 · The combo box is added as a cell widget to a table: this->ui->settingsTable->setCellWidget(rowNumber, 1, onOffComboBox); Now i want to change the background color of the button but not the select items. By default, for an empty combo box or a combo box in which no current item is set, this property contains an invalid QVariant. Ok I was able to change the weight of font of checked item, but I can not remove the tick from the item. If you don't want to explicitly set the user data, you can refer to the items texts with Qt::DisplayRole flag, i. It seems to be the "highlighted" property. I'm not talking about the dropdown menu, but just the displayed text. WidestText, which will update whenever the model changes, or ComboBox. QtWidgets. Although Apr 2, 2020 · In this article we will see how we can set the background color to the combo box. : QComboBox* combo = new QComboBox(); combo->addItem("True"); combo->addItem("False"); Apr 9, 2019 · @J. I want to change the items of the QComboBox by receiving the current row value of the QListWidget. Dec 27, 2023 · Next let‘s allow programming direct combo box changes. There is no way to set place holder text for QComboBox. text – str. Use these anywhere you need to: Validate if options change; Initialize selection ; Sync combos to other Apr 2, 2020 · In this article we will see how we can set the background color to the combo box when it get pressed. You can see it on the screenshot. Show ComboBox. g. I experimented with my stylesheet file and I found out that these two selectors are responsible for style of checked items highlightation: By default, for an empty combo box, this property has a value of 0. My first approach was simply to use QWidget's setStyleSheet function: onOffComboBox->setStyleSheet("background-color: red;"); Here is a solution to only change the size of the dropdown menu of the combobox to fit the largest text, without changing the size of the combobox itself: Suppose you have a combobox called cb : C++: Oct 30, 2018 · I have a tableView that has in its first column a comboBox that works as item delegete. currentIndexChanged() and currentTextChanged() are always emitted regardless if the change was done programmatically or by user interaction, while activated() is only emitted when the change is caused by user interaction. Introduction to the PyQt QComboBox. Similarly if Alphabet is chosen it should display A,B,C,etc. 20. If the combo box is editable, the current text is the value displayed by the line edit. In order to do this we have to change the style sheet code of the combo box, below is the style sheet code QComboBox { backg Sep 30, 2018 · Hi, i have 2 ComboBox. setCurrentText("New option") # Change text. ui file for the first combobox: Nov 1, 2018 · But when I tried to set the data of the comboBox (that is found in index (0,0)) to "Item A" by the following: ui->tableView->model()->setData ( ui->tableView->model()->index(0,0), "Item A, Qt::EditRole); the comboBox's value was set successfully, but the ComboBoxItemDelegate::setModelData function was not called, and this is my problem Feb 2, 2016 · I'm using Qt Designer (well, Qt Creator actually, but specifically the part derived from Qt Designer), and I've added a few QComboBox items to a dialog with a constant list of items. If user selects an item in comboBox, item's text will be set. If you type on the text of an existing entry, that entry is not changed, but a new entry for the combobox is created. I wrote a small function to programmatically change the text displayed in the combo box, but I didn't want to enable the user to edit that text. When the user double clicks the comboBox item, the comboBox appears and when the user select a value (QString) from the dropDown list, the functions createEditor, setEditorData, setModelData, are called properly and do the required work. I have actually found a solution. How can I achieve the right selection in combo box with Qt? Aug 11, 2021 · Hi ! I would like to turn a combobox in white. But this happens only when the combo box is closed. Use setEditText( const QString& ) slot for setting your text. Related Course: Create GUI Apps with Python PyQt5. qt; Share. QComboBox::clearEditText() - Qt Combo Box Text Clearing . For example: ComboBox { model: myModel displayText: currentText. 15, the old, unused background would be deleted to release the resources associated with it. The solution was to set the combo box as editable: this->setEditable(true); and the QComboBox::lineEdit() to read Nov 28, 2012 · Actually Qt creator do the XML for you (still it's good to be able to read it but not essential), what I meant was, you are able to create the GUI by simple drag and drop of items on a "blank" windows, but I strongly suggest you don't until you can't do the same by yourself, or you won't be aware of all the (awesome) possibilities of each Qobjects. 8). replace('*',''); } Now if the item contains a '*' it will be removed. 6, Ubuntu 10. From this reply of yours, it seems you do not understand how Qt's signals and slots (and therefore the connect statements in @jsulm 's For instance, when placing a combo box into a tool bar, it may be desirable to make the combo box flat so it matches better with the flat looks of tool buttons. , by using setSelectionMode(). setCurrentText (text) ¶ Parameters. Change the text color of a native-styled combo box in qt (qml) 6. This property holds the current text. Start Application Loop Apr 17, 2014 · QComboBox is connected to a function using following syntax: myComboBox. There are three signals emitted if the current item of a combobox changes: currentIndexChanged(), currentTextChanged(), and activated(). In order to do this we have to change the style sheet code of the combo box, below is the style sheet code Apr 18, 2013 · I had the same problem when I subclassed QComboBox to make a combo box of check boxes. " Jan 29, 2014 · Off should be red. Mar 5, 2021 · This could change in a future version (although it's very unlikely). currentData: object # This property holds the data for the current item. Jan 17, 2022 · For the text and icon in the combobox label, the data in the model that has the Qt::DisplayRole and Qt::DecorationRole is used. But you can solve this problem. This works for the combobox, but when you are selecting items in the combobox "transparent" does not give me the results I'm hoping for. To use this widget, import QComboBox from PyQt5. addItem("Item 1"); comboBox. A combobox may be editable, allowing the user to modify each item in the list. I need to map the items in the combo box to strings (which are distinct from the displayed strings). The combo box contains QString values. On should be green, and No change should be the default color. addItem("Item 2"); comboBox. i try with: ComboBox->setEnabled(true) ComboBox->setDisabled (true). Aug 17, 2022 · You're referring to an option of Qt Controls 1 which are deprecated and you sould use that and most likely you're correctly using the Qt Controls 2 Controls are "rich" component but they are just a composition of Item, Rectangles and whatever. The widget can have a single selected item, which is displayed in the widget area. Thanks in advance. Access functions: count property PᅟySide6. 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. currentIndexChanged Everytime a combobox is changed by user, these signals will be triggered. Controls 6. Oct 17, 2013 · The alternative way to find the combo box item is setting the specific role as the second argument for QComboBox::findData() function. Also, have a look at this to get more inspiration on how to customize a QComboBox with stylesheets. 8. A combobox provides you with a list of options so that you can select one of them. Set Model on ComboBox. Oct 7, 2008 · Actually, if you look at the Qt docs for QPalette in the case of a QComboBox the background role is probably not what you want. I see in the docs the ComboBoxStyle, but there are no examples. Detailed Description. QComboBox Create a listbox Oct 27, 2020 · My Combobox have 2 values: True or False, I want to Change Color of Combobox in 2 different Color: when value True -> Green, when value False -> Red. Jul 11, 2017 · As of Qt 6, this is now possible by setting the ComboBox's implicitContentWidthPolicy to either ComboBox. WidestTextWhenCompleted, which will check just once, when the ComboBox is loaded. Example: E QComboBox::clearEditText() - Qt Combo Box Text Clearing . It is By default, for an empty combo box or a combo box in which no current item is set, this property has a value of -1. Below is the representation of normal combo box and colorful combo box. So I use QComboBox::drop-down to set the border to 0x and then use QComboBox::down-arrow to define a custom arrow. For example, if the current row value of the QListWidget is 0, I add values of the 0th idx to the QComboBox, and if 1, I add values of the 1st idx to the QComboBox. 2. Access functions: Jun 15, 2017 · This much I think I understand. A QComboBox is a compact way to present a list of options to the user. When selected a QComboBox pops out a list of possible values from which you can select. Thanks for your Help! 4 days ago · QComboBox comboBox; comboBox. I found the default code as Eeli recommended, but I still don't see how to change what I want. when i select a value in 1st ComboBox i have to enable or disable the 2nd ComboBox. PySide6. Summary: in this tutorial, you’ll learn how to use the PyQt QComboBox to create a combobox widget. This property was introduced in Qt 5. Reading and Setting the Current Text. The highlight color is set to transparent. Note that you cannot alter the SelectionMode of the view(), e. If you set the QComboBox minimumContentsLength property to some small value greater than 0, and the sizeAdjustPolicy to AdjustToContents, the combo box will try to adjust its size, but will fit inside the layout requirements. The only way i found is to set the combo box as editable and then the text will appear in blue but I don't wan't that someone can edit the combobox. So I need the lists to be dynamic for all drop downs. How to do this? Jul 13, 2021 · How do I set the current value? for example I want combo box to show 1500ms when the program starts. The QComboBox is a simple widget for presenting a list of options to your users in PyQt, taking up the minimum amount of screen space. Jul 13, 2020 · Hello, I would like to change text color in QComboBox like this: ( I only want red text "Text abcd…. A QComboBox provides a means of presenting a list of options to the user in a way that takes up the minimum amount of screen space. Image. I dont even need a custom action per element, just the same for all. This background color only appear when combo box widget get pressed. You can see in the images the selected item from the QAbstractItemView is always red. addItem("Item 3"); // Set a style sheet comboBox. setStyleSheet("QComboBox { background-color: lightblue; }"); // Set a tooltip comboBox. Access functions: For instance, when placing a combo box into a tool bar, it may be desirable to make the combo box flat so it matches better with the flat looks of tool buttons. As of Qt 5. I tried to Change Color with Stylesheet but it can only change the whole Combobox into either Red or Green like below: how can I Change Combobox in 2 different Colors which depends on their values? Jun 19, 2017 · So if the user selects the Number option the right combobox should display numerical values. May 4, 2021 · QComboBox uses an internal QStandardItemModel (unless another model is explicitly set) which allows setting some properties for each item ("index") of the model. When setting the border to 0px it seems that the whole style of the combo box arrow gets replaced. Jun 20, 2020 · this is a pretty late answer but I think that I found the solution somewhere in the Qt-forums. QComboBox. Mar 15, 2016 · i need to know what is the way to run a function when one item of the combobox is selected/clicked, i tried with the standar connect: connect(ui->combobox,SIGNAL(clicked()),this,SLOT(clickedaction())); but it doesnt work. I think your logic isn't quite right, if the 2nd ComboBox should change when the first one is set to IF, shouldn't you be calling setting in the text changed signal of the first combobox ? You currently only call it in the 2nd and that should change. connect(self. However, as the control does not own the items, it should not delete them. A combobox is a selection widget that shows the current item, and pops up a list of selectable items when clicked. activated. 04) and I was able to change the text color of all items with a stylesheet but I cannot figure out how to change the text color of one specified item. It seems like Qt draws these controls by itself. Dec 2, 2020 · I have QComboBox , I change color it by code combobox->setStyleSheet( "border: 1px solid red;" ); button down-row is change and height small too how to ch Prior to Qt 5. show(): Makes the comboBox visible on the screen. A combobox is a selection widget that displays the current item, and can pop up a list of selectable items. (Keep in mind that the latter might not work as expected if the model isn't already Dec 8, 2016 · Ok so if thse stylesheet don't change the text color in my combobox how can I do ? ^^ I already tried to change the palette colors and the ui file with text editor but none of that change anything. Tested with qt-4. Oct 31, 2018 · Delegates are used only for editing models from within a view - in other words, it is one way. The default value is false . A combobox is also known as a dropdown or select widget. QComboBox. Dec 7, 2011 · If you mean you want the selected item to appear different when the combo box is showing its elements (i. Our team has found the following workaround by pure accident. This property was introduced in QtQuick. I know that I can use QLineEdit, but I would like to use setStyleSheet Mar 6, 2012 · @ddunham. e. 12). In Qt, I can get the selected text of a QComboBox by using the combobox->currentText() method. Before : After: Thanks for helping ! May 3, 2021 · Creating a combobox in Qtableview2 column 1 and passing values from Qtableview1 column1 so i am storing column1 table1 values in Qstring and passing to combo Aug 11, 2011 · It usually is for selecting preexisting entities (a read-only combobox) or for giving some reasonable default values to choose of for a free text field. When the width of a ComboBox is not large enough to display text, that text is elided. Do this in your code: my_combobox->setStylesheet("QComboBox { selection-background-color: red; }"); Obviously, change the "red" to whatever you desire. By default combo box is of grey color although we can change its color. Hilk said in changing combobox index when selection of another combobox is changed: @koahnig. Follow Qt 5 QComboBox setCurrentIndex. So I tried to use StyleSheet with background-color and the QPalette way. You can have a listbox, selectbox or combobox with QComboBox. currentText() # Get current text combo. Jul 18, 2018 · The displayText property allows to change the visualization of the current item. setModel(model): Associates the model with the comboBox instance. edit: Sorry for the typo, of course it's QComboBox instead of ComboBox. Controls 2. comboBox. 1 (Qt 5. wjshlf nlts regm chkxtulo lpgn rdhirp enm yhwl vriomd puqjq