Call the EnableWindowsFormsInterop method to forward all keyboard messages when a System.Windows.Forms.Form is opened modelessly. The EnableWindowsFormsInterop method installs a message filter that is required for modeless forms to function correctly when opened by WPF. You need to call this method only once for a particular WindowsFormsHost instance.
- SecurityAction.Demand for full trust for all callers higher in the call stack. This member cannot be used by partially trusted code.