Is there a way to customize the on screen keyboard of a text box?

Say I need to write an hexadecimal editor.

I could write my own textbox with my own on screen keyboard.

Or is it possible to change the on开发者_高级运维screen keyboard of the regular text box to show only (0-9) (A-F)?

If so, where can I find a sample?

Have a look at the InputScopeNameValue enumeration. You will need to write your own onscreen keyboard as there is no support for a hexadecimal character only keyboard.