Set the secret value of this item.
Each item has a single secret which might be a password or some other secret binary value.
This function may block indefinitely. Use the asynchronous version in user interface threads.
a new secret value
optional cancellation object
whether the change was successful or not
GException on failure.
See Implementation
Set the secret value of this item.
Each item has a single secret which might be a password or some other secret binary value.
This function may block indefinitely. Use the asynchronous version in user interface threads.