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<!doctype html>
<html class="no-js" lang="en" data-content_root="../">
<head><meta charset="utf-8"/>
<meta name="viewport" content="width=device-width,initial-scale=1"/>
<meta name="color-scheme" content="light dark"><meta name="viewport" content="width=device-width, initial-scale=1" />
<meta property="og:title" content="ComboBox" />
<meta property="og:type" content="website" />
<meta property="og:url" content="https://github.com/Embarcadero/reference/delphivcl.ComboBox.html" />
<meta property="og:site_name" content="DelphiVCL | Documentation" />
<meta property="og:description" content="Qualified name: delphivcl.ComboBox" />
<meta property="og:image" content="https://github.com/Embarcadero/DelphiVCL4Python/blob/main/images/DelphiVCL4Python(256px).png" />
<meta property="og:image:alt" content="DelphiVCL | Documentation" />
<meta name="description" content="Qualified name: delphivcl.ComboBox" />
<link rel="index" title="Index" href="../genindex.html" /><link rel="search" title="Search" href="../search.html" /><link rel="next" title="ControlBar" href="delphivcl.ControlBar.html" /><link rel="prev" title="ColorBox" href="delphivcl.ColorBox.html" />
<link rel="shortcut icon" href="../_static/favicon.ico"/><!-- Generated with Sphinx 8.2.3 and Furo 2024.08.06 -->
<title>ComboBox - DelphiVCL Documentation</title>
<link rel="stylesheet" type="text/css" href="../_static/pygments.css?v=8f2a1f02" />
<link rel="stylesheet" type="text/css" href="../_static/styles/furo.css?v=354aac6f" />
<link rel="stylesheet" type="text/css" href="../_static/copybutton.css?v=76b2166b" />
<link rel="stylesheet" type="text/css" href="../_static/graphviz.css?v=4ae1632d" />
<link rel="stylesheet" type="text/css" href="../_static/styles/furo-extensions.css?v=302659d7" />
<link rel="stylesheet" type="text/css" href="../_static/custom.css?v=93c9b8cc" />
<style>
body {
--color-code-background: #f8f8f8;
--color-code-foreground: black;
--color-content-foreground: #000000;
--color-background-primary: #ffffff;
--color-background-border: #ffffff;
--color-sidebar-background: #f8f9fb;
--color-brand-content: #1c00e3;
--color-brand-primary: #192bd0;
--color-link: #c93434;
--color-link--hover: #5b0000;
--color-inline-code-background: #f6f6f6;;
--color-foreground-secondary: #000;
}
@media not print {
body[data-theme="dark"] {
--color-code-background: #202020;
--color-code-foreground: #d0d0d0;
--color-content-foreground: #ffffffd9;
--color-background-primary: #131416;
--color-background-border: #303335;
--color-sidebar-background: #1a1c1e;
--color-brand-content: #2196f3;
--color-brand-primary: #007fff;
--color-link: #51ba86;
--color-link--hover: #9cefc6;
--color-inline-code-background: #262626;
--color-foreground-secondary: #ffffffd9;
}
@media (prefers-color-scheme: dark) {
body:not([data-theme="light"]) {
--color-code-background: #202020;
--color-code-foreground: #d0d0d0;
--color-content-foreground: #ffffffd9;
--color-background-primary: #131416;
--color-background-border: #303335;
--color-sidebar-background: #1a1c1e;
--color-brand-content: #2196f3;
--color-brand-primary: #007fff;
--color-link: #51ba86;
--color-link--hover: #9cefc6;
--color-inline-code-background: #262626;
--color-foreground-secondary: #ffffffd9;
}
}
}
</style></head>
<body>
<script>
document.body.dataset.theme = localStorage.getItem("theme") || "auto";
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<svg xmlns="http://www.w3.org/2000/svg" style="display: none;">
<symbol id="svg-toc" viewBox="0 0 24 24">
<title>Contents</title>
<svg stroke="currentColor" fill="currentColor" stroke-width="0" viewBox="0 0 1024 1024">
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</symbol>
<symbol id="svg-menu" viewBox="0 0 24 24">
<title>Menu</title>
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather-menu">
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<title>Expand</title>
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<title>Light mode</title>
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<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor"
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<input type="checkbox" class="sidebar-toggle" name="__navigation" id="__navigation">
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<label class="overlay sidebar-overlay" for="__navigation">
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<div class="visually-hidden">Hide table of contents sidebar</div>
</label>
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</label>
</div>
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<article role="main" id="furo-main-content">
<section id="combobox">
<h1>ComboBox<a class="headerlink" href="#combobox" title="Link to this heading">¶</a></h1>
<p>Qualified name: <code class="docutils literal notranslate"><span class="pre">delphivcl.ComboBox</span></code></p>
<dl class="py class">
<dt class="sig sig-object py" id="delphivcl.ComboBox">
<em class="property"><span class="k"><span class="pre">class</span></span><span class="w"> </span></em><span class="sig-name descname"><span class="pre">ComboBox</span></span><a class="headerlink" href="#delphivcl.ComboBox" title="Link to this definition">¶</a></dt>
<dd><p>Bases: <code class="xref py py-class docutils literal notranslate"><span class="pre">CustomListControl</span></code></p>
<p>TComboBox combines an edit box with a scrollable list.
A TComboBox component is an edit box with a scrollable drop-down list attached to it. Users can select an item from the list or type directly into the edit box.</p>
<p>Note: The width of the button in a TComboBox is equal to the width that Windows uses for scrollbars. This width depends on the color scheme that the user has chosen (by right-clicking the desktop, selecting Properties, and choosing Appearance). If you carefully size your combo box so all the text is visible, then a user running under a different color scheme may find that the text is obscured by the button. One solution is to set the scrollbar wide when developing the application. Most color schemes use a scrollbar that is at most 21 pixels wide.</p>
<p class="rubric">Methods</p>
<div class="table-wrapper autosummary longtable docutils container">
<table class="autosummary longtable docutils align-default">
<tbody>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AddItem" title="delphivcl.ComboBox.AddItem"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AddItem</span></code></a></p></td>
<td><p>TCustomCombo.AddItem(Item: str, AObject: Object) -> None</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.CanFocus" title="delphivcl.ComboBox.CanFocus"><code class="xref py py-obj docutils literal notranslate"><span class="pre">CanFocus</span></code></a></p></td>
<td><p>TWinControl.CanFocus() Indicates whether a control can receive focus.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Clear" title="delphivcl.ComboBox.Clear"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Clear</span></code></a></p></td>
<td><p>TCustomCombo.Clear()</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ClearSelection" title="delphivcl.ComboBox.ClearSelection"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClearSelection</span></code></a></p></td>
<td><p>TCustomCombo.ClearSelection()</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.CopySelection" title="delphivcl.ComboBox.CopySelection"><code class="xref py py-obj docutils literal notranslate"><span class="pre">CopySelection</span></code></a></p></td>
<td><p>TCustomCombo.CopySelection(Destination: CustomListControl) -> None</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DeleteSelected" title="delphivcl.ComboBox.DeleteSelected"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DeleteSelected</span></code></a></p></td>
<td><p>TCustomCombo.DeleteSelected()</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.GetCount" title="delphivcl.ComboBox.GetCount"><code class="xref py py-obj docutils literal notranslate"><span class="pre">GetCount</span></code></a></p></td>
<td><p>TCustomCombo.GetCount() -> Integer</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.SelectAll" title="delphivcl.ComboBox.SelectAll"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SelectAll</span></code></a></p></td>
<td><p>TCustomCombo.SelectAll()</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.SetFocus" title="delphivcl.ComboBox.SetFocus"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SetFocus</span></code></a></p></td>
<td><p>TWinControl.SetFocus() Gives the input focus to the control.</p></td>
</tr>
</tbody>
</table>
</div>
<p class="rubric">Attributes</p>
<div class="table-wrapper autosummary longtable docutils container">
<table class="autosummary longtable docutils align-default">
<tbody>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Action</span></code></p></td>
<td><p>Specifies the action associated with the control.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Align" title="delphivcl.ComboBox.Align"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Align</span></code></a></p></td>
<td><p>Determines how the control aligns within its container (parent control).</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">AlignDisabled</span></code></p></td>
<td><p>Indicates child control realignment disabled.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">AlignWithMargins</span></code></p></td>
<td><p>Specifies whether a control should be constrained by margins.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Anchors" title="delphivcl.ComboBox.Anchors"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Anchors</span></code></a></p></td>
<td><p>Specifies how the control is anchored to its parent.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AutoCloseUp" title="delphivcl.ComboBox.AutoCloseUp"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoCloseUp</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AutoComplete" title="delphivcl.ComboBox.AutoComplete"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoComplete</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AutoCompleteDelay" title="delphivcl.ComboBox.AutoCompleteDelay"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoCompleteDelay</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AutoDropDown" title="delphivcl.ComboBox.AutoDropDown"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoDropDown</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.AutoDropDownWidth" title="delphivcl.ComboBox.AutoDropDownWidth"><code class="xref py py-obj docutils literal notranslate"><span class="pre">AutoDropDownWidth</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.BevelEdges" title="delphivcl.ComboBox.BevelEdges"><code class="xref py py-obj docutils literal notranslate"><span class="pre">BevelEdges</span></code></a></p></td>
<td><p>Specifies which edges of the control are beveled.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.BevelInner" title="delphivcl.ComboBox.BevelInner"><code class="xref py py-obj docutils literal notranslate"><span class="pre">BevelInner</span></code></a></p></td>
<td><p>Specifies the cut of the inner bevel.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.BevelKind" title="delphivcl.ComboBox.BevelKind"><code class="xref py py-obj docutils literal notranslate"><span class="pre">BevelKind</span></code></a></p></td>
<td><p>Specifies the control's bevel style.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.BevelOuter" title="delphivcl.ComboBox.BevelOuter"><code class="xref py py-obj docutils literal notranslate"><span class="pre">BevelOuter</span></code></a></p></td>
<td><p>Specifies the cut of the outer bevel.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.BiDiMode" title="delphivcl.ComboBox.BiDiMode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">BiDiMode</span></code></a></p></td>
<td><p>Specifies the bidirectional mode for the control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">BoundsRect</span></code></p></td>
<td><p>Specifies the bounding rectangle of the control, expressed in the coordinate system of the parent control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Brush</span></code></p></td>
<td><p>Determines the color and pattern used for painting the background of the control.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.CanUndoSelText" title="delphivcl.ComboBox.CanUndoSelText"><code class="xref py py-obj docutils literal notranslate"><span class="pre">CanUndoSelText</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Canvas" title="delphivcl.ComboBox.Canvas"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Canvas</span></code></a></p></td>
<td><p>Canvas:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.CharCase" title="delphivcl.ComboBox.CharCase"><code class="xref py py-obj docutils literal notranslate"><span class="pre">CharCase</span></code></a></p></td>
<td><p>EditCharCase:</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClassName</span></code></p></td>
<td><p>Returns the TObject.ClassName</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClientHeight</span></code></p></td>
<td><p>Specifies the height of the control's client area in pixels.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClientOrigin</span></code></p></td>
<td><p>Specifies the screen coordinates (in pixels) of the upper-left corner of a control's client area.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClientRect</span></code></p></td>
<td><p>Specifies the size of a control's client area in pixels.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ClientWidth</span></code></p></td>
<td><p>Specifies the horizontal size of the control's client area in pixels.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Color" title="delphivcl.ComboBox.Color"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Color</span></code></a></p></td>
<td><p>Specifies the background color of the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ComObject</span></code></p></td>
<td><p>Specifies the interface reference implemented by the component.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ComponentCount</span></code></p></td>
<td><p>Returns the owned component count</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ComponentIndex</span></code></p></td>
<td><p>Indicates the position of the component in its owner's Components property array.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ComponentState</span></code></p></td>
<td><p>Describes the current state of the component, indicating when a component needs to avoid certain actions.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ComponentStyle</span></code></p></td>
<td><p>Governs the behavior of the component.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Components</span></code></p></td>
<td><p>Returns an iterator over the owned components</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Constraints" title="delphivcl.ComboBox.Constraints"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Constraints</span></code></a></p></td>
<td><p>Specifies the size constraints for the control.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ControlCount" title="delphivcl.ComboBox.ControlCount"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ControlCount</span></code></a></p></td>
<td><p>Returns the count of contained controls</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ControlState</span></code></p></td>
<td><p>Specifies the current state of a control at run time.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ControlStyle</span></code></p></td>
<td><p>Determines style characteristics of the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Controls" title="delphivcl.ComboBox.Controls"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Controls</span></code></a></p></td>
<td><p>Returns an iterator over contained controls</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Ctl3D" title="delphivcl.ComboBox.Ctl3D"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Ctl3D</span></code></a></p></td>
<td><p>Determines whether a control has a three-dimensional (3-D) or two-dimensional look.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">CurrentPPI</span></code></p></td>
<td><p>Embarcadero Technologies does not currently have any additional information.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Cursor</span></code></p></td>
<td><p>Specifies the image used to represent the mouse pointer when it passes into the region covered by the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">CustomHint</span></code></p></td>
<td><p>CustomHint is a custom hint for the control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DesignInfo</span></code></p></td>
<td><p>Contains information used by the Form designer.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DockClientCount</span></code></p></td>
<td><p>Specifies the number of controls that are docked on the windowed control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DockClients</span></code></p></td>
<td><p>Control:</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DockManager</span></code></p></td>
<td><p>Specifies the control's docking manager interface.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DockOrientation</span></code></p></td>
<td><p>DockOrientation specifies how the control is docked relative to other controls docked in the same parent.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">DockSite</span></code></p></td>
<td><p>Specifies whether the control can be the target of drag-and-dock operations.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DoubleBuffered" title="delphivcl.ComboBox.DoubleBuffered"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DoubleBuffered</span></code></a></p></td>
<td><p>Determines whether the control's image is rendered directly to the window or painted to an in-memory bitmap first.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DoubleBufferedMode" title="delphivcl.ComboBox.DoubleBufferedMode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DoubleBufferedMode</span></code></a></p></td>
<td><p>DoubleBufferedMode:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DragCursor" title="delphivcl.ComboBox.DragCursor"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DragCursor</span></code></a></p></td>
<td><p>Specifies the image used to represent the mouse pointer when the control is being dragged.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DragKind" title="delphivcl.ComboBox.DragKind"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DragKind</span></code></a></p></td>
<td><p>Specifies whether the control is being dragged normally or for docking.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DragMode" title="delphivcl.ComboBox.DragMode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DragMode</span></code></a></p></td>
<td><p>Specifies how the control initiates drag-and-drop or drag-and-dock operations.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DropDownCount" title="delphivcl.ComboBox.DropDownCount"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DropDownCount</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DropDownWidth" title="delphivcl.ComboBox.DropDownWidth"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DropDownWidth</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.DroppedDown" title="delphivcl.ComboBox.DroppedDown"><code class="xref py py-obj docutils literal notranslate"><span class="pre">DroppedDown</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Enabled" title="delphivcl.ComboBox.Enabled"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Enabled</span></code></a></p></td>
<td><p>Controls whether the control responds to mouse, keyboard, and timer events.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ExplicitHeight</span></code></p></td>
<td><p>Specifies the explicit vertical size of the control in pixels.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ExplicitLeft</span></code></p></td>
<td><p>Specifies the explicit horizontal pixel coordinate of the left edge of a component relative to its parent.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ExplicitTop</span></code></p></td>
<td><p>Specifies the explicit vertical pixel coordinate of the top edge of a component relative to its parent.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ExplicitWidth</span></code></p></td>
<td><p>Specifies the explicit horizontal size of the control in pixels.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ExtendedUI" title="delphivcl.ComboBox.ExtendedUI"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ExtendedUI</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Floating</span></code></p></td>
<td><p>Specifies whether the control is floating.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">FloatingDockSiteClass</span></code></p></td>
<td><p>Specifies the class of the temporary control that hosts the control when it is floating.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Focused" title="delphivcl.ComboBox.Focused"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Focused</span></code></a></p></td>
<td><p>Determines whether the control has input focus.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Font" title="delphivcl.ComboBox.Font"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Font</span></code></a></p></td>
<td><p>Specifies the attributes of text written on or in the control.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Handle" title="delphivcl.ComboBox.Handle"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Handle</span></code></a></p></td>
<td><p>Provides access to the underlying Windows screen object for the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.HandleAllocated" title="delphivcl.ComboBox.HandleAllocated"><code class="xref py py-obj docutils literal notranslate"><span class="pre">HandleAllocated</span></code></a></p></td>
<td><p>Reports whether a screen object handle exists for the control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Height</span></code></p></td>
<td><p>Specifies the vertical size of the control in pixels.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">HelpContext</span></code></p></td>
<td><p>The HelpContext property contains the numeric context ID that identifies the Help topic for the control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">HelpKeyword</span></code></p></td>
<td><p>The HelpKeyword property contains the keyword string that identifies the Help topic for the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">HelpType</span></code></p></td>
<td><p>Specifies whether the control's context-sensitive Help topic is identified by a context ID or by keyword.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Hint</span></code></p></td>
<td><p>Hint contains the text string that appears when the user moves the mouse over the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">HostDockSite</span></code></p></td>
<td><p>Specifies the control in which the control is docked.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ImeMode" title="delphivcl.ComboBox.ImeMode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ImeMode</span></code></a></p></td>
<td><p>Determines the behavior of the input method editor (IME).</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ImeName" title="delphivcl.ComboBox.ImeName"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ImeName</span></code></a></p></td>
<td><p>Specifies the input method editor (IME) to use for converting keyboard input to Asian language characters.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">IsDrawingLocked</span></code></p></td>
<td><p>IsDrawingLocked property returns True when redrawing for this control is locked.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ItemHeight" title="delphivcl.ComboBox.ItemHeight"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ItemHeight</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ItemIndex" title="delphivcl.ComboBox.ItemIndex"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ItemIndex</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Items" title="delphivcl.ComboBox.Items"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Items</span></code></a></p></td>
<td><p>Strings:</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">LRDockWidth</span></code></p></td>
<td><p>Specifies the width of the control when it is docked horizontally.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Left</span></code></p></td>
<td><p>Specifies the horizontal coordinate of the left edge of a component relative to its parent.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Margins</span></code></p></td>
<td><p>Specifies the margins of the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.MaxLength" title="delphivcl.ComboBox.MaxLength"><code class="xref py py-obj docutils literal notranslate"><span class="pre">MaxLength</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">MouseInClient</span></code></p></td>
<td><p>Indicates whether the mouse pointer is currently in the client area of the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Name</span></code></p></td>
<td><p>Specifies the name of the component as referenced in code.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Observers</span></code></p></td>
<td><p>Indicates the TObservers object added to the TComponent.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnDragDrop" title="delphivcl.ComboBox.OnDragDrop"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnDragDrop</span></code></a></p></td>
<td><p>Callable[[Object, Object, int, int], None]:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnDragOver" title="delphivcl.ComboBox.OnDragOver"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnDragOver</span></code></a></p></td>
<td><p>Callable[[Object, Object, int, int, DragState, bool], None]:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnDrawItem" title="delphivcl.ComboBox.OnDrawItem"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnDrawItem</span></code></a></p></td>
<td><p>Callable[[WinControl, int, Rect, OwnerDrawState], None]:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnEndDock" title="delphivcl.ComboBox.OnEndDock"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnEndDock</span></code></a></p></td>
<td><p>Callable[[Object, Object, int, int], None]:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnEndDrag" title="delphivcl.ComboBox.OnEndDrag"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnEndDrag</span></code></a></p></td>
<td><p>Callable[[Object, Object, int, int], None]:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnGesture" title="delphivcl.ComboBox.OnGesture"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnGesture</span></code></a></p></td>
<td><p>Callable[[Object, GestureEventInfo, bool], None]:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnMeasureItem" title="delphivcl.ComboBox.OnMeasureItem"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnMeasureItem</span></code></a></p></td>
<td><p>Callable[[WinControl, int, int], None]:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnStartDock" title="delphivcl.ComboBox.OnStartDock"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnStartDock</span></code></a></p></td>
<td><p>Callable[[Object, DragDockObject], None]:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.OnStartDrag" title="delphivcl.ComboBox.OnStartDrag"><code class="xref py py-obj docutils literal notranslate"><span class="pre">OnStartDrag</span></code></a></p></td>
<td><p>Callable[[Object, DragObject], None]:</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Owner</span></code></p></td>
<td><p>Returns the Component Owner</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Padding</span></code></p></td>
<td><p>Specifies the padding of a control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Parent</span></code></p></td>
<td><p>Returns/Sets the Control Parent</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentBiDiMode" title="delphivcl.ComboBox.ParentBiDiMode"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentBiDiMode</span></code></a></p></td>
<td><p>Specifies whether the control uses its parent's BiDiMode.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentColor" title="delphivcl.ComboBox.ParentColor"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentColor</span></code></a></p></td>
<td><p>Specifies where a control looks for its color information.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentCtl3D" title="delphivcl.ComboBox.ParentCtl3D"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentCtl3D</span></code></a></p></td>
<td><p>Determines where a component looks to determine whether it should have a three-dimensional look.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentCustomHint</span></code></p></td>
<td><p>Specifies where a control looks for its custom hint.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentDoubleBuffered" title="delphivcl.ComboBox.ParentDoubleBuffered"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentDoubleBuffered</span></code></a></p></td>
<td><p>ParentDoubleBuffered defers the DoubleBuffered property of this component to the value of the parent's DoubleBuffered property.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentFont" title="delphivcl.ComboBox.ParentFont"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentFont</span></code></a></p></td>
<td><p>Specifies where a control looks for its font information.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentShowHint" title="delphivcl.ComboBox.ParentShowHint"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentShowHint</span></code></a></p></td>
<td><p>Specifies where a control looks to find out if its Help Hint should be shown.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ParentWindow" title="delphivcl.ComboBox.ParentWindow"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ParentWindow</span></code></a></p></td>
<td><p>Reference to parent's underlying control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">PixelsPerInch</span></code></p></td>
<td><p>Embarcadero Technologies does not currently have any additional information.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.PopupMenu" title="delphivcl.ComboBox.PopupMenu"><code class="xref py py-obj docutils literal notranslate"><span class="pre">PopupMenu</span></code></a></p></td>
<td><p>Specifies the pop-up menu associated with the control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">RedrawDisabled</span></code></p></td>
<td><p>RedrawDisabled property returns True when redrawing for this control is locked.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">ScaleFactor</span></code></p></td>
<td><p>Embarcadero Technologies does not currently have any additional information.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.SelLength" title="delphivcl.ComboBox.SelLength"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SelLength</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.SelStart" title="delphivcl.ComboBox.SelStart"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SelStart</span></code></a></p></td>
<td><p>int:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.SelText" title="delphivcl.ComboBox.SelText"><code class="xref py py-obj docutils literal notranslate"><span class="pre">SelText</span></code></a></p></td>
<td><p>str:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.ShowHint" title="delphivcl.ComboBox.ShowHint"><code class="xref py py-obj docutils literal notranslate"><span class="pre">ShowHint</span></code></a></p></td>
<td><p>ShowHint specifies whether to show the Help Hint when the mouse pointer moves over the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Showing" title="delphivcl.ComboBox.Showing"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Showing</span></code></a></p></td>
<td><p>Indicates whether the control is showing on the screen.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Sorted" title="delphivcl.ComboBox.Sorted"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Sorted</span></code></a></p></td>
<td><p>bool:</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Style" title="delphivcl.ComboBox.Style"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Style</span></code></a></p></td>
<td><p>ComboBoxStyle:</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.StyleElements" title="delphivcl.ComboBox.StyleElements"><code class="xref py py-obj docutils literal notranslate"><span class="pre">StyleElements</span></code></a></p></td>
<td><p>Specifies the style elements that are used by the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.StyleName" title="delphivcl.ComboBox.StyleName"><code class="xref py py-obj docutils literal notranslate"><span class="pre">StyleName</span></code></a></p></td>
<td><p>Embarcadero Technologies does not currently have any additional information.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">TBDockHeight</span></code></p></td>
<td><p>Specifies the height of the control when it is docked vertically.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.TabOrder" title="delphivcl.ComboBox.TabOrder"><code class="xref py py-obj docutils literal notranslate"><span class="pre">TabOrder</span></code></a></p></td>
<td><p>Indicates the position of the control in its parent's tab order.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.TabStop" title="delphivcl.ComboBox.TabStop"><code class="xref py py-obj docutils literal notranslate"><span class="pre">TabStop</span></code></a></p></td>
<td><p>Determines whether the user can tab to a control.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Tag</span></code></p></td>
<td><p>Stores a NativeInt integral value as a part of a component.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Text" title="delphivcl.ComboBox.Text"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Text</span></code></a></p></td>
<td><p>Contains a text string associated with the control.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.TextHint" title="delphivcl.ComboBox.TextHint"><code class="xref py py-obj docutils literal notranslate"><span class="pre">TextHint</span></code></a></p></td>
<td><p>str:</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Top</span></code></p></td>
<td><p>Specifies the Y coordinate of the upper-left corner of a control, relative to its parent or containing control in pixels.</p></td>
</tr>
<tr class="row-odd"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Touch" title="delphivcl.ComboBox.Touch"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Touch</span></code></a></p></td>
<td><p>Specifies the touch manager component associated with the control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">UndockHeight</span></code></p></td>
<td><p>Specifies the height of the control when it is floating.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">UndockWidth</span></code></p></td>
<td><p>Specifies the width of the control when it is floating.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">UseDockManager</span></code></p></td>
<td><p>Specifies whether the docking manager is used in drag-and-dock operations.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">VCLComObject</span></code></p></td>
<td><p>Represents information used internally by components that support COM.</p></td>
</tr>
<tr class="row-even"><td><p><a class="reference internal" href="#delphivcl.ComboBox.Visible" title="delphivcl.ComboBox.Visible"><code class="xref py py-obj docutils literal notranslate"><span class="pre">Visible</span></code></a></p></td>
<td><p>Specifies whether the component appears onscreen.</p></td>
</tr>
<tr class="row-odd"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">VisibleDockClientCount</span></code></p></td>
<td><p>Specifies the number of visible controls that are docked on the windowed control.</p></td>
</tr>
<tr class="row-even"><td><p><code class="xref py py-obj docutils literal notranslate"><span class="pre">Width</span></code></p></td>
<td><p>Specifies the horizontal size of the control or form in pixels.</p></td>
</tr>
</tbody>
</table>
</div>
<dl class="py method">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AddItem">
<span class="sig-name descname"><span class="pre">AddItem</span></span><span class="sig-paren">(</span><em class="sig-param"><span class="n"><span class="pre">Item</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><span class="pre">str</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">AObject</span></span><span class="p"><span class="pre">:</span></span><span class="w"> </span><span class="n"><a class="reference internal" href="delphivcl.Object.html#delphivcl.Object" title="delphivcl.Object"><span class="pre">Object</span></a></span></em><span class="sig-paren">)</span> <span class="sig-return"><span class="sig-return-icon">→</span> <span class="sig-return-typehint"><span class="pre">None</span></span></span><a class="headerlink" href="#delphivcl.ComboBox.AddItem" title="Link to this definition">¶</a></dt>
<dd></dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.Align">
<span class="sig-name descname"><span class="pre">Align</span></span><a class="headerlink" href="#delphivcl.ComboBox.Align" title="Link to this definition">¶</a></dt>
<dd><p>Determines how the control aligns within its container (parent control).
Use Align to align a control to the top, bottom, left, or right of a form or panel and have it remain there even if the size of the form, panel, or component that contains the control changes. When the parent is resized, an aligned control also resizes so that it continues to span the top, bottom, left, or right edge of the parent.
For example, to use a panel component with various controls on it as a tool palette, change the panel’s Align value to alLeft. The value of alLeft for the Align property of the panel guarantees that the tool palette remains on the left side of the form and always equals the client height of the form.
The default value of Align is alNone, which means a control remains where it is positioned on a form or panel.</p>
<p>Tip: If Align is set to alClient, the control fills the entire client area so that it is impossible to select the parent form by clicking it. In this case, select the parent by selecting the control on the form and pressing ESC, or by using the Object Inspector.
Any number of child components within a single parent can have the same Align value, in which case they stack up along the edge of the parent. The child controls stack up in z-order. To adjust the order in which the controls stack up, drag the controls into their desired positions.</p>
<p>Note: To cause a control to maintain a specified relationship with an edge of its parent, but not necessarily lie along one edge of the parent, use the Anchors property instead.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>Align</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.Anchors">
<span class="sig-name descname"><span class="pre">Anchors</span></span><a class="headerlink" href="#delphivcl.ComboBox.Anchors" title="Link to this definition">¶</a></dt>
<dd><p>Specifies how the control is anchored to its parent.
Use Anchors to ensure that a control maintains its current position relative to an edge of its parent, even if the parent is resized. When its parent is resized, the control holds its position relative to the edges to which it is anchored.
If a control is anchored to opposite edges of its parent, the control stretches when its parent is resized. For example, if a control has its Anchors property set to [akLeft, akRight], the control stretches when the width of its parent changes.
Anchors is enforced only when the parent is resized. Thus, for example, if a control is anchored to opposite edges of a form at design time and the form is created in a maximized state, the control is not stretched because the form is not resized after the control is created.</p>
<p>Note: If a control should maintain contact with three edges of its parent (hugging one side of the parent and stretching the length of that side), use the Align property instead. Unlike Anchors, Align allows controls to adjust to changes in the size of other aligned sibling controls as well as changes to the parent’s size.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>Anchors</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AutoCloseUp">
<span class="sig-name descname"><span class="pre">AutoCloseUp</span></span><a class="headerlink" href="#delphivcl.ComboBox.AutoCloseUp" title="Link to this definition">¶</a></dt>
<dd><p>bool:</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AutoComplete">
<span class="sig-name descname"><span class="pre">AutoComplete</span></span><a class="headerlink" href="#delphivcl.ComboBox.AutoComplete" title="Link to this definition">¶</a></dt>
<dd><p>bool:</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AutoCompleteDelay">
<span class="sig-name descname"><span class="pre">AutoCompleteDelay</span></span><a class="headerlink" href="#delphivcl.ComboBox.AutoCompleteDelay" title="Link to this definition">¶</a></dt>
<dd><p>int:</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AutoDropDown">
<span class="sig-name descname"><span class="pre">AutoDropDown</span></span><a class="headerlink" href="#delphivcl.ComboBox.AutoDropDown" title="Link to this definition">¶</a></dt>
<dd><p>bool:</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.AutoDropDownWidth">
<span class="sig-name descname"><span class="pre">AutoDropDownWidth</span></span><a class="headerlink" href="#delphivcl.ComboBox.AutoDropDownWidth" title="Link to this definition">¶</a></dt>
<dd><p>bool:</p>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.BevelEdges">
<span class="sig-name descname"><span class="pre">BevelEdges</span></span><a class="headerlink" href="#delphivcl.ComboBox.BevelEdges" title="Link to this definition">¶</a></dt>
<dd><p>Specifies which edges of the control are beveled.
Use BevelEdges to get or set which edges of the control are beveled. The BevelInner, BevelOuter, and BevelKind properties determine the appearance of the specified edges.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>BevelEdges</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.BevelInner">
<span class="sig-name descname"><span class="pre">BevelInner</span></span><a class="headerlink" href="#delphivcl.ComboBox.BevelInner" title="Link to this definition">¶</a></dt>
<dd><p>Specifies the cut of the inner bevel.
Use BevelInner to specify whether the inner bevel has a raised, lowered, or flat look.
The inner bevel appears immediately inside the outer bevel. If there is no outer bevel (BevelOuter is bvNone), the inner bevel appears immediately inside the border.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>BevelCut</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.BevelKind">
<span class="sig-name descname"><span class="pre">BevelKind</span></span><a class="headerlink" href="#delphivcl.ComboBox.BevelKind" title="Link to this definition">¶</a></dt>
<dd><p>Specifies the control’s bevel style.
Use BevelKind to modify the appearance of a bevel. BevelKind influences how sharply the bevel stands out.
BevelKind, in combination with BevelWidth and the cut of the bevel specified by BevelInner or BevelOuter, can create a variety of effects. Experiment with various combinations to get the look you want.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>BevelKind</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.BevelOuter">
<span class="sig-name descname"><span class="pre">BevelOuter</span></span><a class="headerlink" href="#delphivcl.ComboBox.BevelOuter" title="Link to this definition">¶</a></dt>
<dd><p>Specifies the cut of the outer bevel.
Use BevelOuter to specify whether the outer bevel has a raised, lowered, or flat look.
The outer bevel appears immediately inside the border and outside the inner bevel.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>BevelCut</p>
</dd>
</dl>
</dd></dl>
<dl class="py attribute">
<dt class="sig sig-object py" id="delphivcl.ComboBox.BiDiMode">
<span class="sig-name descname"><span class="pre">BiDiMode</span></span><a class="headerlink" href="#delphivcl.ComboBox.BiDiMode" title="Link to this definition">¶</a></dt>
<dd><p>Specifies the bidirectional mode for the control.
Use BiDiMode to enable the control to adjust its appearance and behavior automatically when the application runs in a locale that reads from right to left instead of left to right. The bidirectional mode controls the reading order for the text, the placement of the vertical scroll bar, and whether the alignment is changed.
Alignment does not change for controls that are known to contain number, date, time, or currency values. For example, with data-aware controls, the alignment does not change for the following field types: ftSmallint, ftInteger, ftWord, ftFloat, ftCurrency, ftBCD, ftDate, ftTime, ftDateTime, ftAutoInc.</p>
<dl class="field-list simple">
<dt class="field-odd">Type<span class="colon">:</span></dt>
<dd class="field-odd"><p>BiDiMode</p>
</dd>
</dl>
</dd></dl>
<dl class="py method">
<dt class="sig sig-object py" id="delphivcl.ComboBox.CanFocus">
<span class="sig-name descname"><span class="pre">CanFocus</span></span><span class="sig-paren">(</span><span class="sig-paren">)</span><a class="headerlink" href="#delphivcl.ComboBox.CanFocus" title="Link to this definition">¶</a></dt>
<dd><p>Indicates whether a control can receive focus.</p>
</dd></dl>
<dl class="py attribute">