Initial WPF content migrated (#17)

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dotnet-desktop-guide/framework/wpf/controls/tooltip.md

@@ -0,0 +1,32 @@
+---
+title: "ToolTip"
+ms.date: "03/30/2017"
+f1_keywords: 
+  - "AutoGeneratedOrientationPage"
+helpviewer_keywords: 
+  - "ToolTip control [WPF]"
+  - "controls [WPF], ToolTip"
+  - "popups [WPF]"
+ms.assetid: a3cb42d6-6ce3-4aa0-a557-2cc5b142f1e4
+---
+# ToolTip
+A tooltip is a small pop-up window that appears when a user pauses the mouse pointer over an element, such as over a <xref:System.Windows.Controls.Button>.  
+  
+ The following illustration shows a mouse pointer that points to the **Close**<xref:System.Windows.Controls.Button>, which then displays its identifying <xref:System.Windows.Controls.ToolTip>.  
+  
+ Close button with its tooltip displayed  
+  
+ ![ToolTip screenshot](./media/ss-ctl-tooltip.png "SS_CTL_tooltip")  
+  
+## In This Section  
+ [ToolTip Overview](tooltip-overview.md)  
+  [How-to Topics](tooltip-how-to-topics.md)  
+  
+## Reference  
+ <xref:System.Windows.Controls.ToolTip>  
+  <xref:System.Windows.Controls.ToolTipService>  
+  <xref:System.Windows.Controls.Primitives.Popup>  
+  
+## Related Sections  
+ [Popup Overview](popup-overview.md)  
+  [How-to Topics](popup-how-to-topics.md)