# C1.Util.DX.DXGI.ISurfaceImageSourceNative.BeginDraw

## Content

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<h1 id="C1_Util_DX_DXGI_ISurfaceImageSourceNative_BeginDraw_" data-uid="C1.Util.DX.DXGI.ISurfaceImageSourceNative.BeginDraw*">BeginDraw Method
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<div class="markdown level0 conceptual"></div>



<a id="C1_Util_DX_DXGI_ISurfaceImageSourceNative_BeginDraw_" data-uid="C1.Util.DX.DXGI.ISurfaceImageSourceNative.BeginDraw*"></a>
<h4 id="C1_Util_DX_DXGI_ISurfaceImageSourceNative_BeginDraw_C1_Util_DX_RectL_C1_Util_DX_Point2L__C1_Util_DX_DXGI_Surface__" data-uid="C1.Util.DX.DXGI.ISurfaceImageSourceNative.BeginDraw(C1.Util.DX.RectL,C1.Util.DX.Point2L@,C1.Util.DX.DXGI.Surface@)">BeginDraw(RectL, out Point2L, out Surface)</h4>
<div class="markdown level1 summary"><p>HRESULT ISurfaceImageSourceNative::BeginDraw([In] RECT updateRect,[Out] IDXGISurface** surface,[Out] POINT* offset)</p>
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<div class="markdown level1 conceptual"></div>
<h5 class="declaration">Declaration</h5>
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  <pre><code class="lang-csharp hljs">public HResult BeginDraw(RectL updateRect, out Point2L offset, out Surface surface)</code></pre>
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  <pre><code class="lang-vbnet hljs">Public Function BeginDraw(updateRect As RectL, ByRef offset As Point2L, ByRef surface As Surface) As HResult</code></pre>
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<h5 class="parameters">Parameters</h5>
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  <thead>
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      <th>Type</th>
      <th>Name</th>
      <th>Description</th>
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      <td><a class="xref" href="C1.Util.DX.RectL.html">RectL</a></td>
      <td><span class="parametername">updateRect</span></td>
      <td></td>
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      <td><a class="xref" href="C1.Util.DX.Point2L.html">Point2L</a></td>
      <td><span class="parametername">offset</span></td>
      <td></td>
    </tr>
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      <td><a class="xref" href="C1.Util.DX.DXGI.Surface.html">Surface</a></td>
      <td><span class="parametername">surface</span></td>
      <td></td>
    </tr>
  </tbody>
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<h5 class="returns">Returns</h5>
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  <thead>
    <tr>
      <th>Type</th>
      <th>Description</th>
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    <tr>
      <td><a class="xref" href="C1.Util.DX.HResult.html">HResult</a></td>
      <td></td>
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  </tbody>
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