Mouse position in picture control - LV8.2 - need a sanity check

[DonRoth]

Hi Folks:

Can someone please run this VI and tell me why the mouse position records as 0,0 no matter where one moves the mouse in the picture control?

Thanks,

Don

[DonRoth]

Don't waste your time - It looks like it is a corrupted (unresponsive) picture control for some reason - I put another one on there and it worked fine.....thanks anyhow, Don

[Darren]

The context help for that picture control is populated with a bunch of complicated math-sounding stuff.  As such, it looks like this picture control was created from some source other than just dropping the normal picture control off the palettes.  In that case, all bets are off...

-D

[tst]

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@Darren wrote:

The context help for that picture control is populated with a bunch of complicated math-sounding stuff.  As such, it looks like this picture control was created from some source other than just dropping the normal picture control off the palettes.  In that case, all bets are off...

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Doesn't that just mean that someone changed the description for the control? That doesn't sound like something which should corrupt it. Maybe this should be investigated to see what could have caused it...

[altenbach]

Your picture control has the zoom factor set to zero instead of 1. This is not a valid value. (according to the online help it is, but it doesn't explain what a value of zero actually means in practical terms 🐵

Thus the coordinates are always zero on the plot aread and -1 outside. Change the zoom factor to 1 and all's well. 🙂

[altenbach]

More specifically, do the following once, run the VI, then delete the zoom factor property again and save the VI. All better! 😄

(I wonder why the zoom factor property is not available from the property dialog. Maybe it should be? :))

Message Edited by altenbach on 09-22-2007 03:48 PM

[altenbach]

Maybe Don is just testing us? 😄

[tst]

OK, I guess that means the control isn't corrupted and that there is no need to investigate.

[Gabi1]

something strikes me as odd: i dont remember having to set the zoom factor unless i wanted to change it. (have to check in my old vis tough). is it a new default?

[tst]

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@Gabi1 wrote:

is it a new default?

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No reason to think so. The zoom factor was probably set programmatically at some point to 0 (bad calculation?) and the code that did it was deleted or not copied over to the uploaded VI.