# CSJ2K.j2k.wavelet.WTDecompSpec.setMainCompDefDecompType

## Content

<div class="doc-site-dotnet-api-container">



<h1 id="CSJ2K_j2k_wavelet_WTDecompSpec_setMainCompDefDecompType_" data-uid="CSJ2K.j2k.wavelet.WTDecompSpec.setMainCompDefDecompType*">setMainCompDefDecompType Method
</h1>
<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="CSJ2K_j2k_wavelet_WTDecompSpec_setMainCompDefDecompType_" data-uid="CSJ2K.j2k.wavelet.WTDecompSpec.setMainCompDefDecompType*"></a>
<h4 id="CSJ2K_j2k_wavelet_WTDecompSpec_setMainCompDefDecompType_System_Int32_System_Int32_System_Int32_" data-uid="CSJ2K.j2k.wavelet.WTDecompSpec.setMainCompDefDecompType(System.Int32,System.Int32,System.Int32)">setMainCompDefDecompType(int, int, int)</h4>
<div class="markdown level1 summary"><p>Sets the &quot;component main default&quot; decomposition type and number of
levels for the specified component. Both 'dec' and 'lev' can not be
negative at the same time.</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
<div class="codewrapper">
  <pre><code class="lang-csharp hljs">public virtual void setMainCompDefDecompType(int n, int dec, int lev)</code></pre>
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<div class="codewrapper">
  <pre><code class="lang-vbnet hljs">Public Overridable Sub setMainCompDefDecompType(n As Integer, dec As Integer, lev As Integer)</code></pre>
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<h5 class="parameters">Parameters</h5>
<table class="table table-bordered table-condensed">
  <thead>
    <tr>
      <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.int32">int</a></td>
      <td><span class="parametername">n</span></td>
      <td><p>The component index</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td><span class="parametername">dec</span></td>
      <td><p>The decomposition type. If negative then the main default is
used.</p>
</td>
    </tr>
    <tr>
      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.int32">int</a></td>
      <td><span class="parametername">lev</span></td>
      <td><p>The number of levels. If negative then the main defaul is
used.</p>
</td>
    </tr>
  </tbody>
</table>
</div>