https://help.syncfusion.com/cr/uwp/Syncfusion.UI.Xaml.Controls.Input.InputPane.html
Class InputPane - UWP API Reference | Syncfusion
Represents a class for Displaying the input keys.InputPane
api referenceclassuwpsyncfusion
https://bugzilla.mozilla.org/show_bug.cgi?id=1200799
1200799 - Use InputPane.TryShow and InputPane.TryHide instead of invoking TabTip.exe directly
RESOLVED (nobody) in Core - Widget: Win32. Last updated 2015-09-28.