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+---
+title: Disable the RealTimeStylus
+ms.date: "03/30/2017"
+ms.assetid: e0525309-5ede-4782-837d-dbf6e5554859
+---
+# Disable the RealTimeStylus for WPF Applications
+
+Windows Presentation Foundation (WPF) has built in support for processing Windows 7 touch input. The support comes through the tablet platform’s real-time stylus input as <xref:System.Windows.UIElement.OnStylusDown%2A>, <xref:System.Windows.UIElement.OnStylusUp%2A>, and <xref:System.Windows.UIElement.OnStylusMove%2A> events. Windows 7 also provides multi-touch input as Win32 WM_TOUCH window messages. These two APIs are mutually exclusive on the same HWND. Enabling touch input via the tablet platform (the default for WPF applications) disables WM_TOUCH messages. As a result, to use WM_TOUCH to receive touch messages from a WPF window, you must disable the built-in stylus support in WPF. This is applicable in a scenario such as a WPF window hosting a component that uses WM_TOUCH.  
+  
+ To disable WPF listening to stylus input, remove any tablet support added by the WPF window.  
+  
+## Example  
+ The following sample code shows how to remove the default tablet platform support by using reflection.  
+  
+```csharp  
+public static void DisableWPFTabletSupport()  
+{  
+    // Get a collection of the tablet devices for this window.
+    TabletDeviceCollection devices = System.Windows.Input.Tablet.TabletDevices;  
+  
+    if (devices.Count > 0)  
+    {
+        // Get the Type of InputManager.  
+        Type inputManagerType = typeof(System.Windows.Input.InputManager);  
+  
+        // Call the StylusLogic method on the InputManager.Current instance.  
+        object stylusLogic = inputManagerType.InvokeMember("StylusLogic",  
+                    BindingFlags.GetProperty | BindingFlags.Instance | BindingFlags.NonPublic,  
+                    null, InputManager.Current, null);  
+  
+        if (stylusLogic != null)  
+        {  
+            //  Get the type of the stylusLogic returned from the call to StylusLogic.  
+            Type stylusLogicType = stylusLogic.GetType();  
+  
+            // Loop until there are no more devices to remove.  
+            while (devices.Count > 0)  
+            {  
+                // Remove the first tablet device in the devices collection.  
+                stylusLogicType.InvokeMember("OnTabletRemoved",  
+                        BindingFlags.InvokeMethod | BindingFlags.Instance | BindingFlags.NonPublic,  
+                        null, stylusLogic, new object[] { (uint)0 });  
+            }
+        }  
+  
+    }  
+}  
+```  
+  
+## See also
+
+- [Intercepting Input from the Stylus](intercepting-input-from-the-stylus.md)