It's not currently implemented; however, it could be implemented as a wrapper around WinForms (either in C# or Eagle).
Alternatively, it is possible to dynamically load and use Tcl/Tk from Eagle, including bidirectional communication with WinForms and/or WPF. This makes porting Tk applications or portions thereof relatively straightforward.
Alternatively, it is possible to dynamically load and use Tcl/Tk from Eagle, including bidirectional communication with WinForms and/or WPF. This makes porting Tk applications or portions thereof relatively straightforward.