Eyeshot activation is a two steps process. It needs to be activated for design-time usage and unlocked for run-time usage.
Add the ViewportLayout.Unlock() call to the constructor of the Form using the ViewportLayout control.
WinForms
WPF
Multiple serial numbers
If you own more than one serial number for current Eyeshot version, you can use any of them in the ViewportLayout.Unlock() call.
Licensing Eyeshot samples
The Eyeshot source code samples need to be licensed for runtime usage as well. For this purpose, the Unlock Samples utility program is provided to add the proper ViewportLayout.Unlock()call in all the samples in one shot.