{"id":2052,"date":"2024-03-12T09:09:05","date_gmt":"2024-03-12T09:09:05","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/how-do-you-create-a-dropdown-box-in-pyqt5\/"},"modified":"2024-03-29T15:26:02","modified_gmt":"2024-03-29T15:26:02","slug":"how-do-you-create-a-dropdown-box-in-pyqt5","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/how-do-you-create-a-dropdown-box-in-pyqt5\/","title":{"rendered":"How do you create a dropdown box in PyQt5?"},"content":{"rendered":"<p>You can create a drop-down box in PyQt5 using the QComboBox class. Below is a simple example code:<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-keyword\">import<\/span> sys\r\n<span class=\"hljs-keyword\">from<\/span> <a href=\"https:\/\/pypi.org\/project\/PyQt5\/#:~:text=PyQt5%20is%20a%20comprehensive%20set,platforms%20including%20iOS%20and%20Android%2e\">PyQt5<\/a>.QtWidgets <span class=\"hljs-keyword\">import<\/span> QApplication, QWidget, QVBoxLayout, QComboBox\r\n\r\n<span class=\"hljs-keyword\">class<\/span> <span class=\"hljs-title class_\">ComboBoxExample<\/span>(<span class=\"hljs-title class_ inherited__\">QWidget<\/span>):\r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">__init__<\/span>(<span class=\"hljs-params\">self<\/span>):\r\n        <span class=\"hljs-built_in\">super<\/span>().__init__()\r\n        self.initUI()\r\n\r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">initUI<\/span>(<span class=\"hljs-params\">self<\/span>):\r\n        layout = QVBoxLayout()\r\n\r\n        combobox = QComboBox()\r\n        combobox.addItem(<span class=\"hljs-string\">\"Option 1\"<\/span>)\r\n        combobox.addItem(<span class=\"hljs-string\">\"Option 2\"<\/span>)\r\n        combobox.addItem(<span class=\"hljs-string\">\"Option 3\"<\/span>)\r\n\r\n        combobox.currentIndexChanged.connect(self.on_combobox_changed)\r\n\r\n        layout.addWidget(combobox)\r\n        self.setLayout(layout)\r\n\r\n        self.setWindowTitle(<span class=\"hljs-string\">\"ComboBox Example\"<\/span>)\r\n        self.show()\r\n\r\n    <span class=\"hljs-keyword\">def<\/span> <span class=\"hljs-title function_\">on_combobox_changed<\/span>(<span class=\"hljs-params\">self, index<\/span>):\r\n        <span class=\"hljs-built_in\">print<\/span>(<span class=\"hljs-string\">\"Selected index:\"<\/span>, index)\r\n\r\n<span class=\"hljs-keyword\">if<\/span> __name__ == <span class=\"hljs-string\">'__main__'<\/span>:\r\n    app = QApplication(sys.argv)\r\n    ex = ComboBoxExample()\r\n    sys.exit(app.exec_())\r\n<\/code><\/pre>\n<p>In this example, we have created a basic drop-down menu and added three options to it. We have also linked the currentIndexChanged signal to the on_combobox_changed method, so that when the selection in the drop-down menu changes, we will print out the current selected index.<\/p>\n<p>You can modify and expand this example according to your own needs.<\/p>\n<p>&nbsp;<\/p>\n<p>More tutorials<\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/what-are-the-functions-of-the-combobox-control\/\" target=\"_blank\" rel=\"noopener\">What are the functions of the ComboBox control?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/what-are-the-differences-between-listbox-and-combobox\/\" target=\"_blank\" rel=\"noopener\">What are the differences between ListBox and ComboBox?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/creating-an-android-spinner-by-utilizing-kotlin\/\" target=\"_blank\" rel=\"noopener\">Creating an Android Spinner by utilizing Kotlin.<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/convert-string-to-character-in-java\/\" target=\"_blank\" rel=\"noopener\">convert string to character array in Java.<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n<p><a class=\"LinkSuggestion__Link-sc-1gewdgc-4 cLBplk\" href=\"https:\/\/www.silicloud.com\/blog\/how-to-add-a-menu-bar-in-pyqt5\/\" target=\"_blank\" rel=\"noopener\">How to add a menu bar in PyQt5?<span class=\"sc-gswNZR eASTkv\">(Opens in a new browser tab)<\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>You can create a drop-down box in PyQt5 using the QComboBox class. Below is a simple example code: import sys from PyQt5.QtWidgets import QApplication, QWidget, QVBoxLayout, QComboBox class ComboBoxExample(QWidget): def __init__(self): super().__init__() self.initUI() def initUI(self): layout = QVBoxLayout() combobox = QComboBox() combobox.addItem(&#8220;Option 1&#8221;) combobox.addItem(&#8220;Option 2&#8221;) combobox.addItem(&#8220;Option 3&#8221;) combobox.currentIndexChanged.connect(self.on_combobox_changed) layout.addWidget(combobox) self.setLayout(layout) self.setWindowTitle(&#8220;ComboBox Example&#8221;) self.show() def on_combobox_changed(self, [&hellip;]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-2052","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How do you create a dropdown box in PyQt5? - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"You can create a drop-down box in PyQt5 using the QComboBox class. 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