Vertical scroll bars update?

[becktho]

Rely on the SW to "ignore" different things is not that good, isn't it?

[trosier]

Ok guys I have one more part that I am currently trying to figure out. I also have a text box that is displaying spam from a serial port that I am monitoring/testing. The last part was pretty simple. This one seems a little more involved. I can see on the property node of the text box where you would set the vertical scroll box position but is there a property I can read that tells the program when the box is ready to be scrolled?

[jasonhill]

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@Dennis Knutson wrote:
It's ignored.

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No, it's not.  Not in 8.0, anyway. 

Error 1077 occurred at Property Node (arg 1) in
Vertical_Scroll_Bar_Update_mod.vi

Possible reason(s):

LabVIEW:  Invalid property value.

Property Name: Index Values


It seems that it converts -12 to 4294967284.  Darn wraparound!

Message Edited by jasonhill on 12-01-2005 09:06 AM

[becktho]

STRIKE!!!

[Dennis_Knutson]

Damn, that's one feature in LV 8 I'm not too happy to see.

[jasonhill]

Can you read the NumRows property and compare it to the current index?

[jasonhill]

Absolute value is your new best friend.

Crud. That wont work right either.  I don't like the "In Range? Coerce", because you have to specify an upper limit.  So many operations to get a proper select.  There does not seem to be an elegant solution.  Worse, upgrading from 7.x to 8.0 may cause buffer over-runs. 

Message Edited by jasonhill on 12-01-2005 09:27 AM

[trosier]

There is not a numrows property for a text indicator that I can find anyway. If you know different let me know.

[jasonhill]

I cannot think of any eligant way to do this.

If the lines are sufficeintly short, you could disable word wrap and count EOL and CRs. 

If there are no EOLs or CRs, you could just count characters.

If the spam is totally arbitrary.... ick.

[Dennis_Knutson]

Well, you could specify +Infinity for the upper limit.