fgl_winmessage()
Displays an interactive message box containing text and OK button.
Syntax
fgl_winmessage(
   title STRING,
   text STRING,
   icon STRING )
- title defines message box title.
 - text is the text displayed in the message box. Use '\n' to separate lines.
 - icon is the name of the icon to be displayed.
 
Usage
The fgl_winmessage() function displays a message box to the end user.
Important: With front-ends implementing this function with a system dialog box API
creating a modal window, the end user will have to close the modal window first, before continuing
within the window of another program. Consider using a menu with
"dialog" style instead so as not to block other programs.
Supported names for the icon parameter are: information,
exclamation, question, stop. Note that on some
front-ends such as iOS devices, the native message pop-up window does not display an image.
On front-ends using a system dialog box API, the OK buttons will be automatically localized based on the operating system language settings. On other front-ends, the option buttons will be decorated depending on action default settings.
Example
IMPORT FGL fgldialog
MAIN
  CALL fgl_winmessage( "Title", "This is a critical message.", "stop")
END MAIN