fgl_winprompt()
Displays a dialog box containing a field that accepts a value.
Syntax
fgl_winprompt(
   x INTEGER,
   y INTEGER,
   text STRING,
   default STRING,
   length INTEGER,
   type INTEGER )
  RETURNS STRING
- x is the column position in characters.
 - y is the line position in characters.
 - text is the message shown in the box.
 - default is the default value.
 - length is the maximum length of the input value.
 - type is the data type of the return value.
 
Usage
The fgl_winprompt() function allows the end user
 to enter a value.
This function is provided for backward compatibility, you can also
 use your own input dialog with a customized
 form to get a value
 from the user.
 Or use the standard PROMPT
 instruction.
Possible values for the type parameter are: 0=CHAR,
 1=SMALLINT, 2=INTEGER, 7=DATE, 255=invisible
Avoid passing NULL values.
Example
IMPORT FGL fgldialog
MAIN
  DEFINE answer DATE
  LET answer = fgl_winprompt( 10, 10, "Today", DATE, 10, 7 )
  DISPLAY "Today is " || answer 
END MAIN