On-screen (Virtual) Keyboard in WPF

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My primary project at the moment is a touchscreen epos system.

 

I am trying to create a On Screen / Virtual keyboard, and I would like to do so in WPF, to keep in with the look of the rest of the product.

 

I have craeted my layout etc, and I have managed to get my onscreen Keyboard working nicely with notepad.... almost.

 

 

The problem I have is that when I click a button on my keyboard, the keyboard then* becomes the active window.

 

I then have to call SetActiveWindow(8975651603260375040)

 

in order to set the notepad window(for example) as active again, before using Keybd_Event in user32.dll to send the keystroke through.

 

 

Is there a way I can stop my keyboard from getting focus / becoming active, in the same way that the MS OSK works?

 

 

I would use the MS one if it did not look so hideous, and the fact that it is so small makes it useless to me!

 

 

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