Alert Message and linefeeds

Question

I can create a multi-line alert in the Forms 6i Builder, Alert Property Palette, in the Message by using the editor window and typing and using the Enter key to break the line. When I close the edit window, the text shows up on the property with a box where the linefeed is. If I cut the box and paste it into a different editor, I see it is actually the chr(10) linefeed character.
When I compile and run the form on Web Forms 6i, the message displays as a multi-line message, with linefeeds where I wanted them.
However, I cannot use Set_Alert_Property to set the message. The Chr(10) characters are displayed on the web forms as a square box.
An earlier topic here reported that using \n or /n in place of chr(10) would work in Web Forms, but I cannot get either to work.
So if anyone knows how to use Set_Alert_Property to set the message containing a linefeed that works on Web Forms 6i, I would really like to know.
Thanks in advance.

Answer 1

Ok, upon further investigation, I found that I was mixing alert messages with stacked messages via the Message command. We use a generic PLL_ALERT call to display popup windows. It checks to see if an alert named 'ALERT_001' is defined in the current fmb, and if so, AND if the message is less than 200 characters, uses the alert. If there is no alert defined or if the message is more than 200 characters, uses the stacked message command.
It is in the stacked message on the web where both CHR(10) and CHR(13) do NOT work.
Here is what I found:
CHR(10) starts a new line for:
  Forms6 client/server alert
  Forms6 client/server message
  Forms6 web alert
  ***fails (space) Forms6 web message
CHR(13) starts a new line for:
  Forms6 client/server alert
  Forms6 client/server message
  ***fails (a box) Forms6 web alert
  ***fails (a box) Forms6 web message
CHR(138) starts a new line for:
  ***fails (S) Forms6 client/server alert
  ***fails (S) Forms6 client/server message
  Forms6 web alert
  Forms6 web message
The CHR(138) 'S' has a curve (umlaut?) above it in Forms6 client/server.
Here is the code I used in a key-dup-item trigger to get my results above:
DECLARE
  msg VARCHAR2(300) :=
    '____long_line_to_set_alert_window_width____ '
    ||'CHR(10)---a'||CHR(10)||'b---'
    ||'CHR(13)---c'||CHR(13)||'d---'
    ||'CHR(138)---e'||CHR(138)||'f---';
BEGIN
  SET_ALERT_PROPERTY('ALERT_001',ALERT_MESSAGE_TEXT,msg);
  IF SHOW_ALERT('ALERT_001') = 0 THEN NULL; END IF;
  -- stacked messge --
  MESSAGE(msg);
  MESSAGE(' ',NO_ACKNOWLEDGE);
END;