bool Returns true when you are able to select and modify the input field, returns false otherwise.
Checks if the text within an input field can be selected and modified while TouchScreenKeyboard is open.
Usually, when TouchScreenKeyboard is open, the text within an input field cannot be selected and modified. For example, copy and paste is disabled. For Windows Store Apps on some devices, it is still possible to select and edit text when the on-screen keyboard is active.