如何确定WP7 SIP键盘何时被解除

Question

I've noticed that when the SIP keyboard is displayed, the OnBackKeyPress event isn't fired when the user dismisses the keyboard via the WP7 back button.

Is there a way for me to determine when the keyboard has been dismissed via the back button?

Thanks

Answer 1

You can handle the textbox's KeyUp event and then check the PlatformKeyCode .

 <TextBox Text="TextBox" Width="460" KeyUp="Textbox_KeyUp" />

Then, in your event handler:

private void Textbox_KeyUp(object sender, KeyEventArgs e)
{
     //27 is the PKC for the hardware back button
     if (e.PlatformKeyCode == 27)
     {
         //Backbutton is pressed
     }            
}

Answer 2

Check for LostFocus event on TextBox . Maybe it can be suitable for you (but it also will fire when a user tap outside of TextBox )