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Subject: RE: [cgmo-webcgm] Problem with OBJECT and PARAM tags
May I ask why this knowledge wasn t shared with the group? We could (for example) have standardized the src param in WebCGM 2.1
From: Don Larson [mailto:dlarson@cgmlarson.com]
Sent: Tuesday, June 01, 2010 10:25 AM
To: Bezaire, Benoit; cgmo-webcgm@lists.oasis-open.org
Subject: re: [cgmo-webcgm] Problem with OBJECT and PARAM tags
Benoit
>
> Hi All,
>
> It has come to our attention that IE has a limitation related to the
> <object> data attribute and <PARAM> elements. Our implementation
> (COleControl ActiveX) is passed in corrupted data when both the data
> attribute is specified on the <object> tag and when <PARAM> elements are
> also specified.
>
> According to Microsoft, HTML 4 doesn t state that an implementation (of
> HTML) has to pass all values ( data attribute, <PARAM>s) simultaneously
> to the ActiveX. Either data without <PARAM> is used; or <PARAM>s without
> the data attribute is used.
>
> Which means that WebCGM s example (shown below) doesn t work with a
> standard ActiveX implementation:
> <script type="application/ecmascript"> <![CDATA[
> function myHandler(evt)
> {
> // performs DOM manipulation calls...
> }
> ]]>
> </script>
> [...]
> <object data=""xxx.cgm"" type="image/cgm;Version=4;ProfileId=WebCGM"
> width="200" height="100">
> <param name="onload" value="myHandler(evt);"/>
> </object>
>
> Are other Windows vendors aware of this? Do other vendors use
> DoPropExchange to get the <PARAM>s?
>
We are somewhat aware of problem in using "DATA" to get the cgm file stream.
We are still using DoPropExchange to get cgm file via PARAM and SRC keyword.
> There is possibly a workaround that can be implemented in ActiveX
> implementation (not tested yet), but that being said, maybe we want to put
> some thoughts in how to use the OBJECT tag in a properly supported IE way.
>
> Regards,
> Benoit
>
Regards,
Don Larson
Larson Software Technology
Tel: (713)977.4177 ext. 102
www.cgmlarson.com
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