ui.Interface.refresh() is used to synchronize the client with the server.
Syntax:
ui.Interface.refresh()
Arguments:
|
takes no input arguments |
Usage and examples:
Normally the client refreshes the screen only when there is a user interaction. If there is no user interaction, but you still need the client to refresh the displayed data, use this method. You can change the refresh mode using the AUTOREFRESH statement.
Here is an example of the refresh() method used in the first refreshment mode when the displayed values become visible only once a screen interaction statement was executed:
MAIN
DEFINE f001 INTEGER
OPEN WINDOW w WITH FORM "various"
FOR f001=1 TO 10
DISPLAY BY NAME f001
# Without this line the program will beexecuted silently and finish
# without the user being able to see the output at all.
CALL ui.Interface.refresh()
SLEEP 1
END FOR
END MAIN
If there is a long operation without a user interaction on the application start, add the ui.Interface.refresh() method to the MAIN statement to prevent the application timeout:
MAIN
DEFINE
i, j, k ,z INT,
startTime, finishTime DATETIME HOUR TO FRACTION,
totalTime INTERVAL HOUR TO FRACTION
CALL ui.Interface.refresh()
FOR i = 1 TO 400
FOR j = 1 TO 1000
FOR k = 1 TO 1000
LET z=1
END FOR
END FOR
END FOR
...
END MAIN