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Free Links from a TPSOPCConnector
June 25, 2012
14:14, EEST
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Rainer Versteeg
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March 21, 2012
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Hello !

I create a TPSOPCConnector component at runtime.
Then I fill the OPCConnector with OPC Items like OPCConnector.addItem((c as TPSFloat).Caption, (c as TPSFloat), vpValue);

How can I remove an Item at runtime ?

Br
Rainer

June 26, 2012
14:50, EEST
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Otso Palonen
Espoo, Finland
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December 21, 2011
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Hi Rainer,

use OPCConnector.Links.Delete() to remove them.

Best regards,
– Otso

June 26, 2012
16:26, EEST
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Rainer Versteeg
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March 21, 2012
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Hi Otso,

Thank you.

My OPCConnector.links.count shows me 5332.

Now I want to delete the links:

for i:=0 to count-1 do
OPCConnector.links.delete(i);

When i is 2766[5332/2] it throws an error “Listenindex error”.

Why ?

Br,

Rainer

June 26, 2012
17:58, EEST
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Pyry
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December 21, 2011
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Hi Rainer,

While it’s a list, the indexes are re-arranged after each insert and delete, so you’re loop goes over index after half of items are deleted.
You can clear the list e.g like this:

for i:=0 to count-1 do
OPCConnector.links.delete(0);

or like this

for i:=1 to count do
OPCConnector.links.delete(count-i);

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