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CEF4Delphi/docs/html/uCEFViewDelegate.TCefViewDelegateOwn.html
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Salvador Díaz Fau 30d9edd993
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2026-04-04 18:01:24 +02:00

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<!DOCTYPE html>
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<title>cef4delphi: uCEFViewDelegate: Class TCefViewDelegateOwn</title>
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<span id="TCefViewDelegateOwn"></span><h1 class="cio">Class TCefViewDelegateOwn</h1>
<div class="sections">
<div class="one_section"><a class="section" href="#PasDoc-Description">Description</a></div><div class="one_section"><a class="section" href="#PasDoc-Hierarchy">Hierarchy</a></div><div class="one_section"><a class="section" href="#PasDoc-Methods">Methods</a></div></div>
<span id="PasDoc-Description"></span><h2 class="unit">Unit</h2>
<p class="unitlink">
<a href="uCEFViewDelegate.html">uCEFViewDelegate</a></p>
<h2 class="declaration">Declaration</h2>
<p class="declaration">
<code>type TCefViewDelegateOwn = class(<a class="normal" href="uCEFBaseRefCounted.TCefBaseRefCountedOwn.html">TCefBaseRefCountedOwn</a>, <a class="normal" href="uCEFInterfaces.ICefViewDelegate.html">ICefViewDelegate</a>)</code></p>
<h2 class="description">Description</h2>
<p>
Implement this interface to handle view events. All size and position values are in density independent pixels (DIP) unless otherwise indicated. The functions of this interface will be called on the browser process UI thread unless otherwise indicated. </p>
<p>
<p>&lt;see href=&quot;<a href="https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_view_delegate_capi.h">https://bitbucket.org/chromiumembedded/cef/src/master/include/capi/views/cef_view_delegate_capi.h</a>&quot;&gt;CEF source file: /include/capi/views/cef_view_delegate_capi.h (cef_view_delegate_t))</p>
<span id="PasDoc-Hierarchy"></span><h2 class="hierarchy">Hierarchy</h2>
<ul class="hierarchy"><li class="ancestor">TInterfacedObject</li>
<li class="ancestor"><a class="normal" href="uCEFBaseRefCounted.TCefBaseRefCountedOwn.html">TCefBaseRefCountedOwn</a></li>
<li class="thisitem">TCefViewDelegateOwn</li></ul><h2 class="overview">Overview</h2>
<span id="PasDoc-Methods"></span><h3 class="summary">Methods</h3>
<table class="summary wide_list">
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<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnGetPreferredSize-ICefView-TCefSize-">OnGetPreferredSize</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
<tr class="list2 visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnGetMinimumSize-ICefView-TCefSize-">OnGetMinimumSize</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnGetMaximumSize-ICefView-TCefSize-">OnGetMaximumSize</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
<tr class="list2 visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnGetHeightForWidth-ICefView-Integer-Integer-">OnGetHeightForWidth</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; width: Integer; var aResult: Integer); virtual;</code></td>
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<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnParentViewChanged-ICefView-boolean-ICefView-">OnParentViewChanged</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean; const parent: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
</tr>
<tr class="list2 visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnChildViewChanged-ICefView-boolean-ICefView-">OnChildViewChanged</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean; const child: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
</tr>
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnWindowChanged-ICefView-boolean-">OnWindowChanged</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean); virtual;</code></td>
</tr>
<tr class="list2 visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnLayoutChanged-ICefView-TCefRect-">OnLayoutChanged</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; new_bounds: <a href="uCEFTypes.TCefRect.html">TCefRect</a>); virtual;</code></td>
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<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnFocus-ICefView-">OnFocus</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnBlur-ICefView-">OnBlur</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#OnThemeChanged-ICefView-">OnThemeChanged</a></strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<tr class="list2 visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><code>procedure <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#InitializeCEFMethods">InitializeCEFMethods</a></strong>; virtual;</code></td>
</tr>
<tr class="list visibility-public">
<td class="visibility"><span class="badge vis-public">Public</span></td>
<td class="itemcode"><code>constructor <strong><a href="uCEFViewDelegate.TCefViewDelegateOwn.html#Create">Create</a></strong>; virtual;</code></td>
</tr>
</table>
<h2 class="description">Description</h2>
<h3 class="detail">Methods</h3>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnGetPreferredSize-ICefView-TCefSize-"></span><code>procedure <strong>OnGetPreferredSize</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
<tr><td colspan="2">
<p>
Return the preferred size for |view|. The Layout will use this information to determine the display size. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnGetMinimumSize-ICefView-TCefSize-"></span><code>procedure <strong>OnGetMinimumSize</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
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<p>
Return the minimum size for |view|. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnGetMaximumSize-ICefView-TCefSize-"></span><code>procedure <strong>OnGetMaximumSize</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; var aResult : <a href="uCEFTypes.TCefSize.html">TCefSize</a>); virtual;</code></td>
</tr>
<tr><td colspan="2">
<p>
Return the maximum size for |view|. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnGetHeightForWidth-ICefView-Integer-Integer-"></span><code>procedure <strong>OnGetHeightForWidth</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; width: Integer; var aResult: Integer); virtual;</code></td>
</tr>
<tr><td colspan="2">
<p>
Return the height necessary to display |view| with the provided |width|. If not specified the result of get_preferred_size().height will be used by default. Override if |view|'s preferred height depends upon the width (for example, with Labels). </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnParentViewChanged-ICefView-boolean-ICefView-"></span><code>procedure <strong>OnParentViewChanged</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean; const parent: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
</tr>
<tr><td colspan="2">
<p>
Called when the parent of |view| has changed. If |view| is being added to |parent| then |added| will be true (1). If |view| is being removed from |parent| then |added| will be false (0). If |view| is being reparented the remove notification will be sent before the add notification. Do not modify the view hierarchy in this callback. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnChildViewChanged-ICefView-boolean-ICefView-"></span><code>procedure <strong>OnChildViewChanged</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean; const child: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
</tr>
<tr><td colspan="2">
<p>
Called when a child of |view| has changed. If |child| is being added to |view| then |added| will be true (1). If |child| is being removed from |view| then |added| will be false (0). If |child| is being reparented the remove notification will be sent to the old parent before the add notification is sent to the new parent. Do not modify the view hierarchy in this callback. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnWindowChanged-ICefView-boolean-"></span><code>procedure <strong>OnWindowChanged</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; added: boolean); virtual;</code></td>
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<tr><td colspan="2">
<p>
Called when |view| is added or removed from the ICefWindow. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnLayoutChanged-ICefView-TCefRect-"></span><code>procedure <strong>OnLayoutChanged</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>; new_bounds: <a href="uCEFTypes.TCefRect.html">TCefRect</a>); virtual;</code></td>
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<p>
Called when the layout of |view| has changed. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
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<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnFocus-ICefView-"></span><code>procedure <strong>OnFocus</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<p>
Called when |view| gains focus. </p>
</td></tr>
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<table class="detail visibility-protected wide_list">
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<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnBlur-ICefView-"></span><code>procedure <strong>OnBlur</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<p>
Called when |view| loses focus. </p>
</td></tr>
</table>
<table class="detail visibility-protected wide_list">
<tr class="list visibility-protected">
<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="OnThemeChanged-ICefView-"></span><code>procedure <strong>OnThemeChanged</strong>(const view: <a href="uCEFInterfaces.ICefView.html">ICefView</a>); virtual;</code></td>
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<p>
(
<p>Called when the theme for |view| has changed, after the new theme colors have already been applied. Views are notified via the component hierarchy in depth-first reverse order (children before parents).
<p>This will be called in the following cases:
<p></p>
<pre class="preformatted">
1. When |view|, or a parent of |view|, is added to a Window.
2. When the native/OS or Chrome theme changes for the Window that contains
|view|. See ICefWindowDelegate.OnThemeColorsChanged documentation.
3. When the client explicitly calls ICefWindow.ThemeChanged on the
Window that contains |view|.</pre>
<p>
<p>Optionally use this callback to override the new per-View theme colors by calling ICefView.SetBackgroundColor or the appropriate component- specific function. See ICefWindow.SetThemeColor documentation for how to customize additional Window theme colors.
<p>(</p>
</td></tr>
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<table class="detail visibility-protected wide_list">
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<td class="visibility"><span class="badge vis-protected">Protected</span></td>
<td class="itemcode"><span id="InitializeCEFMethods"></span><code>procedure <strong>InitializeCEFMethods</strong>; virtual;</code></td>
</tr>
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<p>
Links the methods in the internal CEF record data pointer with the methods in this class. </p>
</td></tr>
</table>
<table class="detail visibility-public wide_list">
<tr class="list visibility-public">
<td class="visibility"><span class="badge vis-public">Public</span></td>
<td class="itemcode"><span id="Create"></span><code>constructor <strong>Create</strong>; virtual;</code></td>
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<p class="nodescription">This item has no description.</p></td></tr>
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