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684 lines
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684 lines
23 KiB
HTML
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<title>Class Responder
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<a class="btn toc-toggle collapse" data-toggle="collapse" href="#sidetoggle" aria-expanded="false" aria-controls="sidetoggle">Show / Hide Table of Contents</a>
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<div class="article row grid-right">
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<div class="col-md-10">
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<article class="content wrap" id="_content" data-uid="Terminal.Gui.Responder">
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<h1 id="Terminal_Gui_Responder" data-uid="Terminal.Gui.Responder" class="text-break">Class Responder
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</h1>
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<div class="markdown level0 summary">
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Responder base class implemented by objects that want to participate on keyboard and mouse input.
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</div>
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<div class="markdown level0 conceptual"></div>
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<div class="inheritance">
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<h5>Inheritance</h5>
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<div class="level0"><span class="xref">System.Object</span></div>
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<div class="level1"><span class="xref">Responder</span></div>
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<div class="level2"><a class="xref" href="Terminal.Gui.View.html">View</a></div>
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</div>
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<div class="inheritedMembers">
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<h5>Inherited Members</h5>
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<div>
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<span class="xref">System.Object.Equals(System.Object)</span>
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</div>
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<div>
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<span class="xref">System.Object.Equals(System.Object, System.Object)</span>
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</div>
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<div>
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<span class="xref">System.Object.GetHashCode()</span>
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<span class="xref">System.Object.GetType()</span>
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<span class="xref">System.Object.MemberwiseClone()</span>
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<span class="xref">System.Object.ReferenceEquals(System.Object, System.Object)</span>
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<span class="xref">System.Object.ToString()</span>
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</div>
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<h6><strong>Namespace</strong>: <a class="xref" href="Terminal.Gui.html">Terminal.Gui</a></h6>
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<h6><strong>Assembly</strong>: Terminal.Gui.dll</h6>
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<h5 id="Terminal_Gui_Responder_syntax">Syntax</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public class Responder</code></pre>
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</div>
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<h3 id="properties">Properties
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</h3>
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<a id="Terminal_Gui_Responder_CanFocus_" data-uid="Terminal.Gui.Responder.CanFocus*"></a>
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<h4 id="Terminal_Gui_Responder_CanFocus" data-uid="Terminal.Gui.Responder.CanFocus">CanFocus</h4>
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<div class="markdown level1 summary">
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Gets or sets a value indicating whether this <a class="xref" href="Terminal.Gui.Responder.html">Responder</a> can focus.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool CanFocus { get; set; }</code></pre>
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</div>
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<h5 class="propertyValue">Property Value</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code> if can focus; otherwise, <code>false</code>.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_HasFocus_" data-uid="Terminal.Gui.Responder.HasFocus*"></a>
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<h4 id="Terminal_Gui_Responder_HasFocus" data-uid="Terminal.Gui.Responder.HasFocus">HasFocus</h4>
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<div class="markdown level1 summary">
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Gets or sets a value indicating whether this <a class="xref" href="Terminal.Gui.Responder.html">Responder</a> has focus.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool HasFocus { get; }</code></pre>
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</div>
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<h5 class="propertyValue">Property Value</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code> if has focus; otherwise, <code>false</code>.</td>
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</tr>
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</tbody>
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</table>
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<h3 id="methods">Methods
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</h3>
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<a id="Terminal_Gui_Responder_MouseEvent_" data-uid="Terminal.Gui.Responder.MouseEvent*"></a>
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<h4 id="Terminal_Gui_Responder_MouseEvent_Terminal_Gui_MouseEvent_" data-uid="Terminal.Gui.Responder.MouseEvent(Terminal.Gui.MouseEvent)">MouseEvent(MouseEvent)</h4>
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<div class="markdown level1 summary">
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Method invoked when a mouse event is generated
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool MouseEvent(MouseEvent mouseEvent)</code></pre>
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</div>
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<h5 class="parameters">Parameters</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Name</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a class="xref" href="Terminal.Gui.MouseEvent.html">MouseEvent</a></td>
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<td><span class="parametername">mouseEvent</span></td>
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<td>Contains the details about the mouse event.</td>
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</tr>
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</tbody>
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</table>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code>, if the event was handled, <code>false</code> otherwise.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnEnter_" data-uid="Terminal.Gui.Responder.OnEnter*"></a>
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<h4 id="Terminal_Gui_Responder_OnEnter" data-uid="Terminal.Gui.Responder.OnEnter">OnEnter()</h4>
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<div class="markdown level1 summary">
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Method invoked when a view gets focus.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnEnter()</code></pre>
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</div>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code>, if the event was handled, <code>false</code> otherwise.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnKeyDown_" data-uid="Terminal.Gui.Responder.OnKeyDown*"></a>
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<h4 id="Terminal_Gui_Responder_OnKeyDown_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.Responder.OnKeyDown(Terminal.Gui.KeyEvent)">OnKeyDown(KeyEvent)</h4>
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<div class="markdown level1 summary">
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Method invoked when a key is pressed.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnKeyDown(KeyEvent keyEvent)</code></pre>
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</div>
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<h5 class="parameters">Parameters</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Name</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
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<td><span class="parametername">keyEvent</span></td>
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<td>Contains the details about the key that produced the event.</td>
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</tr>
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</tbody>
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</table>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td>true if the event was handled</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnKeyUp_" data-uid="Terminal.Gui.Responder.OnKeyUp*"></a>
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<h4 id="Terminal_Gui_Responder_OnKeyUp_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.Responder.OnKeyUp(Terminal.Gui.KeyEvent)">OnKeyUp(KeyEvent)</h4>
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<div class="markdown level1 summary">
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Method invoked when a key is released.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnKeyUp(KeyEvent keyEvent)</code></pre>
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</div>
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<h5 class="parameters">Parameters</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Name</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
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<td><span class="parametername">keyEvent</span></td>
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<td>Contains the details about the key that produced the event.</td>
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</tr>
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</tbody>
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</table>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td>true if the event was handled</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnLeave_" data-uid="Terminal.Gui.Responder.OnLeave*"></a>
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<h4 id="Terminal_Gui_Responder_OnLeave" data-uid="Terminal.Gui.Responder.OnLeave">OnLeave()</h4>
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<div class="markdown level1 summary">
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Method invoked when a view loses focus.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnLeave()</code></pre>
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</div>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code>, if the event was handled, <code>false</code> otherwise.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnMouseEnter_" data-uid="Terminal.Gui.Responder.OnMouseEnter*"></a>
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<h4 id="Terminal_Gui_Responder_OnMouseEnter_Terminal_Gui_MouseEvent_" data-uid="Terminal.Gui.Responder.OnMouseEnter(Terminal.Gui.MouseEvent)">OnMouseEnter(MouseEvent)</h4>
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<div class="markdown level1 summary">
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Method invoked when a mouse event is generated for the first time.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnMouseEnter(MouseEvent mouseEvent)</code></pre>
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</div>
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<h5 class="parameters">Parameters</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Name</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a class="xref" href="Terminal.Gui.MouseEvent.html">MouseEvent</a></td>
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<td><span class="parametername">mouseEvent</span></td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code>, if the event was handled, <code>false</code> otherwise.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_OnMouseLeave_" data-uid="Terminal.Gui.Responder.OnMouseLeave*"></a>
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<h4 id="Terminal_Gui_Responder_OnMouseLeave_Terminal_Gui_MouseEvent_" data-uid="Terminal.Gui.Responder.OnMouseLeave(Terminal.Gui.MouseEvent)">OnMouseLeave(MouseEvent)</h4>
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<div class="markdown level1 summary">
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Method invoked when a mouse event is generated for the last time.
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</div>
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<div class="markdown level1 conceptual"></div>
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<h5 class="decalaration">Declaration</h5>
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<div class="codewrapper">
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<pre><code class="lang-csharp hljs">public virtual bool OnMouseLeave(MouseEvent mouseEvent)</code></pre>
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</div>
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<h5 class="parameters">Parameters</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Name</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><a class="xref" href="Terminal.Gui.MouseEvent.html">MouseEvent</a></td>
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<td><span class="parametername">mouseEvent</span></td>
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<td></td>
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</tr>
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</tbody>
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</table>
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<h5 class="returns">Returns</h5>
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<table class="table table-bordered table-striped table-condensed">
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<thead>
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<tr>
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<th>Type</th>
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<th>Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td><span class="xref">System.Boolean</span></td>
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<td><code>true</code>, if the event was handled, <code>false</code> otherwise.</td>
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</tr>
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</tbody>
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</table>
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<a id="Terminal_Gui_Responder_ProcessColdKey_" data-uid="Terminal.Gui.Responder.ProcessColdKey*"></a>
|
|
<h4 id="Terminal_Gui_Responder_ProcessColdKey_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.Responder.ProcessColdKey(Terminal.Gui.KeyEvent)">ProcessColdKey(KeyEvent)</h4>
|
|
<div class="markdown level1 summary">
|
|
This method can be overwritten by views that
|
|
want to provide accelerator functionality
|
|
(Alt-key for example), but without
|
|
interefering with normal ProcessKey behavior.
|
|
</div>
|
|
<div class="markdown level1 conceptual"></div>
|
|
<h5 class="decalaration">Declaration</h5>
|
|
<div class="codewrapper">
|
|
<pre><code class="lang-csharp hljs">public virtual bool ProcessColdKey(KeyEvent keyEvent)</code></pre>
|
|
</div>
|
|
<h5 class="parameters">Parameters</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
|
|
<td><span class="parametername">keyEvent</span></td>
|
|
<td>Contains the details about the key that produced the event.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 class="returns">Returns</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><span class="xref">System.Boolean</span></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 id="Terminal_Gui_Responder_ProcessColdKey_Terminal_Gui_KeyEvent__remarks">Remarks</h5>
|
|
<div class="markdown level1 remarks">
|
|
<p>
|
|
After keys are sent to the subviews on the
|
|
current view, all the view are
|
|
processed and the key is passed to the views
|
|
to allow some of them to process the keystroke
|
|
as a cold-key. </p>
|
|
<p>
|
|
This functionality is used, for example, by
|
|
default buttons to act on the enter key.
|
|
Processing this as a hot-key would prevent
|
|
non-default buttons from consuming the enter
|
|
keypress when they have the focus.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<a id="Terminal_Gui_Responder_ProcessHotKey_" data-uid="Terminal.Gui.Responder.ProcessHotKey*"></a>
|
|
<h4 id="Terminal_Gui_Responder_ProcessHotKey_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.Responder.ProcessHotKey(Terminal.Gui.KeyEvent)">ProcessHotKey(KeyEvent)</h4>
|
|
<div class="markdown level1 summary">
|
|
This method can be overwritten by view that
|
|
want to provide accelerator functionality
|
|
(Alt-key for example).
|
|
</div>
|
|
<div class="markdown level1 conceptual"></div>
|
|
<h5 class="decalaration">Declaration</h5>
|
|
<div class="codewrapper">
|
|
<pre><code class="lang-csharp hljs">public virtual bool ProcessHotKey(KeyEvent kb)</code></pre>
|
|
</div>
|
|
<h5 class="parameters">Parameters</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
|
|
<td><span class="parametername">kb</span></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 class="returns">Returns</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><span class="xref">System.Boolean</span></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 id="Terminal_Gui_Responder_ProcessHotKey_Terminal_Gui_KeyEvent__remarks">Remarks</h5>
|
|
<div class="markdown level1 remarks">
|
|
<p>
|
|
Before keys are sent to the subview on the
|
|
current view, all the views are
|
|
processed and the key is passed to the widgets
|
|
to allow some of them to process the keystroke
|
|
as a hot-key. </p>
|
|
<p>
|
|
For example, if you implement a button that
|
|
has a hotkey ok "o", you would catch the
|
|
combination Alt-o here. If the event is
|
|
caught, you must return true to stop the
|
|
keystroke from being dispatched to other
|
|
views.
|
|
</p>
|
|
</div>
|
|
|
|
|
|
<a id="Terminal_Gui_Responder_ProcessKey_" data-uid="Terminal.Gui.Responder.ProcessKey*"></a>
|
|
<h4 id="Terminal_Gui_Responder_ProcessKey_Terminal_Gui_KeyEvent_" data-uid="Terminal.Gui.Responder.ProcessKey(Terminal.Gui.KeyEvent)">ProcessKey(KeyEvent)</h4>
|
|
<div class="markdown level1 summary">
|
|
If the view is focused, gives the view a
|
|
chance to process the keystroke.
|
|
</div>
|
|
<div class="markdown level1 conceptual"></div>
|
|
<h5 class="decalaration">Declaration</h5>
|
|
<div class="codewrapper">
|
|
<pre><code class="lang-csharp hljs">public virtual bool ProcessKey(KeyEvent keyEvent)</code></pre>
|
|
</div>
|
|
<h5 class="parameters">Parameters</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Name</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><a class="xref" href="Terminal.Gui.KeyEvent.html">KeyEvent</a></td>
|
|
<td><span class="parametername">keyEvent</span></td>
|
|
<td>Contains the details about the key that produced the event.</td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 class="returns">Returns</h5>
|
|
<table class="table table-bordered table-striped table-condensed">
|
|
<thead>
|
|
<tr>
|
|
<th>Type</th>
|
|
<th>Description</th>
|
|
</tr>
|
|
</thead>
|
|
<tbody>
|
|
<tr>
|
|
<td><span class="xref">System.Boolean</span></td>
|
|
<td></td>
|
|
</tr>
|
|
</tbody>
|
|
</table>
|
|
<h5 id="Terminal_Gui_Responder_ProcessKey_Terminal_Gui_KeyEvent__remarks">Remarks</h5>
|
|
<div class="markdown level1 remarks">
|
|
<p>
|
|
Views can override this method if they are
|
|
interested in processing the given keystroke.
|
|
If they consume the keystroke, they must
|
|
return true to stop the keystroke from being
|
|
processed by other widgets or consumed by the
|
|
widget engine. If they return false, the
|
|
keystroke will be passed using the ProcessColdKey
|
|
method to other views to process.
|
|
</p>
|
|
<p>
|
|
The View implementation does nothing but return false,
|
|
so it is not necessary to call base.ProcessKey if you
|
|
derive directly from View, but you should if you derive
|
|
other View subclasses.
|
|
</p>
|
|
</div>
|
|
</article>
|
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