Ring and enumeration controls increment backwards in LabVIEW 7

[p]

After creating a ring or enumeration control in LabVIEW 7, the values are incremented backwards. I tried putting them in using both the Edit Items... and Add Item After options. In the Edit Items... menu the values appear in the correct order, but clicking on the up arrow decrements the value while clicking on the down arrow increments the value. The control still works correctly in LabVIEW 6.1, but VIs imported from 6.1 have the same problem. Am I missing something?

[waldemar.hersacher]

Hi p,

I have made a look at your problem. I did the same thing in LV 6.1 and LV 7.0.
First I created a new VI and placed a enum on the front panel. I entered "Nr0" in the enum and used add item after to enter "Nr1" and "Nr2". Now I have three items in the enum. Clicking with the operating tool into the text you get a list which has the entries in the following order from top to bottom: "Nr0", "Nr1", "Nr2".
Using the decrement and increment buttons the next shown item is different from LV 6.1 and LV 7.0.
If you have "Nr1" selected and press the increment LV 6.1 will show "Nr2" which is numericly the next value but the lower entry in the list. This is expected from the programmers point of view but not from the user.
LV 7.0 does this from the point of
the user so incrementing is going upwards the list and shows "Nr0". Since it does not force to have sequential numerical values incrementing numerical will jump through the list in a manner the user cannot understand because he never will see the numeric value behind the text.
Btw I normally do not convert an enum to the numeric value because enums are used to handle with mnemonic text and not with numbers. Only when I communicate with devices or store data I need to convert the enum to a number. If the numbers are not consequtive I used some reserved entries or made a case structure for conversion.
Unfortunatly this change is not documented in the upgrades notes for LV 7.0.

Waldemar