Windows Messages
You can add window pop-up messages to your viewer using the following methods.
“About” Message
To display “about” message from the configuration file:
viewer.layout.window.about()

“Info” Message
To display “info” message:
viewer.layout.window.info("This is an info message.")

“Warning” Message
To display “warning” message:
viewer.layout.window.warning("This is a warning message.")

“Critical” Message
To display “critical” message:
viewer.layout.window.critical("This is an error message.")

“Question” Message
To display “question” message:
viewer.layout.window.question("This is a question message.")

“Confirm” Message
To display “confirm” message:
viewer.layout.window.confirm("This is a confirmation message.")
