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Making elements invisible

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Jackal

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Oct 8, 2002, 9:38:11 AM10/8/02
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Hello all,

I want to know how Microstation process elements to make them invisible. I
mean, is there a bit (or byte) in element structure that can be turned
on/off.

Thanks.

Piotr Slowinski

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Oct 8, 2002, 11:17:34 AM10/8/02
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"Jackal" <tk...@mail.com> wrote in message
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Changing element's class to "construction",
and switching off displaying construction elements
for instance should meet your requirements.
Possibly moving to undisplyaed level too.

HTH
Piotr

mark anderson

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Oct 8, 2002, 12:19:17 PM10/8/02
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What version of MicroStation? In V8 there is a function to set the bit in
the header.

mark anderson [Bentley]

"Jackal" <tk...@mail.com> wrote in message
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Chris Zakrewsky

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Oct 8, 2002, 1:22:30 PM10/8/02
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Hi,

> Possibly moving to undisplyaed level too.

For older MicroStations (up to v7, i.e. uStn/J), level 0 is a good candidate (it is always
invisible). This practice may be viewed as corrupting file (only complex headers are
supposed to occupy level 0), but surprizingly often it works well.

I have used this technique on uStn v2 and v3, where User Commands (UCM) was basically
all you've got.

Note, that this trick will not work in uStn v8.

Cheers,
/Chris Z.


"Piotr Slowinski" <Piotr.S...@infrasoft-civil.com> wrote in message news:3da2f70b$0$8514$ed9e...@reading.news.pipex.net...

Jackal

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Oct 9, 2002, 7:15:00 AM10/9/02
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I'm using v7.

I saw some utility programs can turn on/off elements according to their
symbology. Another example of what I want to do is Geographics's feature
manager..

Thanks


"mark anderson" <mark.a...@bentley.com> wrote in message
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Piotr Slowinski

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Oct 9, 2002, 7:57:51 AM10/9/02
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That might be a bit different story.
For instance it is possible "to catch"
plotting procedure (for view only too)
for every particular element
and prevent displying some of them.

I believe this works this way,
or something really similar in MSGG.

See textwash MDL example -
there is some more explanation.

HTH
Piotr


"Jackal" <tk...@mail.com> wrote in message

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Xavier Naval

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Oct 9, 2002, 2:47:19 PM10/9/02
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This seems to be the way geographics does it.
It's accomplished using the function :
mdlView_setFunction
probably with the UPDATE_PRE parameter.

HTH

Xevi.


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