Question: object onload param

[Benoit Bezaire <benoit@itedo.com>]

Hi,

  The current WebCGM 2.0 specification says the following about the
  'onload' param (of the Object tag):
  - [...] allows script writers to manipulate the WebCGM DOM at the
  point at which the user agent has fully parsed the object tag and
  its descendants and is ready to render the object to the screen.

  Ralf and I interpreted this differently. One of us thought it meant
  that the onload would be dispatch when the ActiveX is loaded, and
  the other thought that it meant the onload is dispatched when the
  Metafile is loaded? There is a difference. From a technical
  perspective the ActiveX can be loaded without a CGM file (as long as
  the MIME type is specified on the 'object' tag, the ActiveX will be
  created).

  We noticed the problem when trying the WebCGMEvent test. The 'src'
  attribute is actually set in the script that is called via the
  onload param.

  So when should we dispatch the onload event?

  We see advantages to both interpretations:
  i) When the ActiveX is loaded... allows to set the 'src' parameter
  in the onload event handler or alternatively, possibly modify via
  the DOM the CGM before the first display.

  ii) When the Metafile is loaded... is like a DOM Mutation event
  where you get notified that the document has change. In this case
  you would get the onload every time the 'src' attribute is set or
  for each internal link to a new WebCGM file. The use case here is to
  extract metadata information to be interpreted by the host
  application following each load.

  What was the intent?
  Which is needed?

  Regards,

-- 
 Benoit   mailto:benoit@itedo.com