Jump to content

Sparky

Members
  • Posts

    5
  • Joined

  • Last visited

    Never

Sparky's Achievements

Newbie

Newbie (1/14)

0

Reputation

  1. I would like to be able to update a picture control in the main application VI from a sub vi. I need to reference the picture control and send the reference to the VI. I am not sure how to do this. I have been reading on refnum's and refnum controls, but cannot seem to see how to do this. Can anyone help? Thanks
  2. I was able to customize the regular listbox control to get the large wide scroll bars for my touch screen. This does all I wanted to do. See screenshot attached. Now the operator can do everything without a keyboard (from touch screen). The problem is that after I save the VI, and then run it again, the listbox scrollbars have reverted to original size (see the other screenshot). I tried saving it as a control, typedef, and strict typedef, and checked automatic from typedef in the properties of the control, but nothing prevented it from reverting back to the narrow scrollbars. Does anyone have any suggestions?
  3. QUOTE(orko @ Sep 6 2007, 02:13 PM) Could have a decimal point as the first char. if the operator enters .985 for example instead of 0.985. I don't think I can guarantee that the operator will not just enter the decimal point first. I guess I could force a zero as the first char if the operator just entered a decimal point. I would prefer to allow him/her to do it either way though. Thanks for all the good comments. Sparky QUOTE(wevanarsdale @ Sep 6 2007, 01:51 PM) Sparky: I'd use the Fract/Exp String to Number function to convert a string or array of strings. This conversion is not sensitive to characters subsequent to the numeric part. You can set the default value to NaN (assuming this value does not appear in your data) and test for a conversion error. You can convert back using the Number to Fractional String or similar function to remove any trailing non-numeric characters. This approach is useful for reformatting numeric string arrays. http://forums.lavag.org/index.php?act=attach&type=post&id=6868 I think the "Fract/Exp String to Number needs the leading zero, and won't work if the first char. is just a decimal point.
  4. QUOTE(Justin Goeres @ Sep 6 2007, 12:57 PM) I have not used the 'regular expressions' VI. It looks like that might do the trick. Thanks you very much! Sparky
  5. Does anyone know of a string VI that checks a string to see if it is a valid decimal number before sending the string to a convert VI? The string could have one of 4 possibilities for the first character (+, -, Number, Decimal Pt.), and can then have either numbers or a decimal pt. after. It must not have more than one decimal Pt., or Plus/Minus sign. Just thought I would check before I start doing my own. I am using LV 8.2. It would be nice if the string to number conversions had some error output. Thanks, Sparky
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.