通过代码关闭Windows Phone上打开的(On-Screen Keyboard)SIP键盘

Vancee@博客园 http://www.cnblogs.com/vancee/archive/2012/11/20/2779766.html

Windows Phone中的TextBox类输入控件，GotFocus时会弹出On-Screen Keyboard(SIP)键盘，如何关闭？

a. 可以通过WP手机的硬件返回按钮(BackKey)关闭SIP键盘；

b.代码实现：因为SIP键盘是在TextBox类控件GotFocus是会自动弹出，在TextBox类控件LostFocus时关闭，所以，直接把Focus焦点设置在其他Focusable控件上(比如rootPhonePage)那么TextBox类控件就直接LostFocus，所以SIP键盘也就跟着关闭了。

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Reference：

• How To Programmatically Dismiss the SIP (keyboard) in Silverlight applications for Windows Phone

http://blogs.msdn.com/b/silverlight_sdk/archive/2010/07/02/programmatically-dismiss-the-sip-keyboard-in-windows-phone-silverlight-app.aspx

• How to close SIP in WP7 User Control

http://stackoverflow.com/questions/4822287/how-to-close-sip-in-wp7-user-control

• Focus Overview [MSDN]

http://msdn.microsoft.com/zh-cn/library/cc903954(v=vs.95).aspx