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31 lines
1.8 KiB
Markdown
31 lines
1.8 KiB
Markdown
---
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title: "How to: Make an Object Follow the Mouse Pointer"
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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helpviewer_keywords:
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- "following the mouse pointer (cursor)"
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- "mouse pointer (cursor), making objects follow"
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- "cursor (mouse pointer), making objects follow"
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ms.assetid: 50b20415-14bc-405c-baf3-2fb254fffde3
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---
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# How to: Make an Object Follow the Mouse Pointer
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This example shows how to change the dimensions of an object when the mouse pointer moves on the screen.
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The example includes an [!INCLUDE[TLA#tla_xaml](../../../includes/tlasharptla-xaml-md.md)] file that creates the [!INCLUDE[TLA#tla_ui](../../../includes/tlasharptla-ui-md.md)] and a code-behind file that creates the event handler.
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## Example
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The following XAML creates the [!INCLUDE[TLA2#tla_ui](../../../includes/tla2sharptla-ui-md.md)], which consists of an <xref:System.Windows.Shapes.Ellipse> inside of a <xref:System.Windows.Controls.StackPanel>, and attaches the event handler for the <xref:System.Windows.UIElement.MouseMove> event.
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[!code-xaml[mouseMoveWithPointer#MouseMoveWithPointerXAML](~/samples/snippets/csharp/VS_Snippets_Wpf/mouseMoveWithPointer/CSharp/Window1.xaml#mousemovewithpointerxaml)]
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The following code behind creates the <xref:System.Windows.UIElement.MouseMove> event handler. When the mouse pointer moves, the height and the width of the <xref:System.Windows.Shapes.Ellipse> are increased and decreased.
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[!code-csharp[mouseMoveWithPointer#MouseMovePointerGetPosition](~/samples/snippets/csharp/VS_Snippets_Wpf/mouseMoveWithPointer/CSharp/Window1.xaml.cs#mousemovepointergetposition)]
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[!code-vb[mouseMoveWithPointer#MouseMovePointerGetPosition](~/samples/snippets/visualbasic/VS_Snippets_Wpf/mouseMoveWithPointer/VisualBasic/Window1.xaml.vb#mousemovepointergetposition)]
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## See also
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- [Input Overview](input-overview.md)
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