# C1.Win.C1Input.GrapeCity.Framework.Input.IMessageProcessor.PreProcess

## Content

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<h1 id="C1_Win_C1Input_GrapeCity_Framework_Input_IMessageProcessor_PreProcess_" data-uid="C1.Win.C1Input.GrapeCity.Framework.Input.IMessageProcessor.PreProcess*">PreProcess Method
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="C1_Win_C1Input_GrapeCity_Framework_Input_IMessageProcessor_PreProcess_" data-uid="C1.Win.C1Input.GrapeCity.Framework.Input.IMessageProcessor.PreProcess*"></a>
<h4 id="C1_Win_C1Input_GrapeCity_Framework_Input_IMessageProcessor_PreProcess_System_Windows_Forms_Message__" data-uid="C1.Win.C1Input.GrapeCity.Framework.Input.IMessageProcessor.PreProcess(System.Windows.Forms.Message@)">PreProcess(ref Message)</h4>
<div class="markdown level1 summary"><p>Process the message before other processors.</p>
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<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">bool PreProcess(ref Message m)</code></pre>
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  <pre><code class="lang-vbnet hljs">Function PreProcess(ByRef m As Message) As Boolean</code></pre>
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<h5 class="parameters">Parameters</h5>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.message">Message</a></td>
      <td><span class="parametername">m</span></td>
      <td><p>A <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.forms.message">Message</a> indicates the window message.</p>
</td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.boolean">bool</a></td>
      <td><p>A <b>bool</b> value indicates whether the message will be processed by other processors.
<b>true</b> the message will not be process any.
<b>false</b> otherwise.</p>
</td>
    </tr>
  </tbody>
</table>
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