# GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.CustomPopupPlacementCallback

## Content

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<h1 id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_DropDownWindow_CustomPopupPlacementCallback_" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.CustomPopupPlacementCallback*">CustomPopupPlacementCallback Property
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<div class="markdown level0 summary"></div>
<div class="markdown level0 conceptual"></div>



<a id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_DropDownWindow_CustomPopupPlacementCallback_" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.CustomPopupPlacementCallback*"></a>
<h4 id="GrapeCity_Wpf_SpreadSheet_CellType_Editors_DropDownWindow_CustomPopupPlacementCallback" data-uid="GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.CustomPopupPlacementCallback">CustomPopupPlacementCallback</h4>
<div class="markdown level1 summary"><p>Gets or sets a delegate handler method that positions the <a class="xref" href="GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.html">DropDownWindow</a>. This is a dependency property.</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">[Bindable(false)]
public CustomPopupPlacementCallback CustomPopupPlacementCallback { get; set; }</code></pre>
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  <pre><code class="lang-vbnet hljs">&lt;Bindable(False)&gt;
Public Property CustomPopupPlacementCallback As CustomPopupPlacementCallback</code></pre>
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<h5 class="propertyValue">Property Value</h5>
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      <th>Type</th>
      <th>Description</th>
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      <td><a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.controls.primitives.custompopupplacementcallback">CustomPopupPlacementCallback</a></td>
      <td><p>The <a class="xref" href="https://learn.microsoft.com/dotnet/api/system.windows.controls.primitives.custompopupplacementcallback">CustomPopupPlacementCallback</a> delegate method that provides placement information for the <a class="xref" href="GrapeCity.Wpf.SpreadSheet.CellType.Editors.DropDownWindow.html">DropDownWindow</a> control.
The default is <a href="https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null">null</a>.</p>
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