Mouse not working in edit mode

[cchriste]

I have version 4.0.1 on a Windows 95 machine, and I am having problems editing any VI. If I click on an item nothing happens, I cannot move it or delete it. I can add items but once they are placed, I cannot do anything to them using the mouse. For example, I can place an indicator on the front panel, but once it is down, I cannot move it or select with the mouse. If I right-click on it and hit 'Find Terminal' it will select the item in the diagram, and from there I can move it with the arrow keys or delete it with the backspace key, but once I click away from it, I am powerless again with the mouse. This makes it very difficult to move items and especially place wires.

This happens for VIs other people have written and VIs I create myself. If I double-click on a SubVI, it will open that SubVI, but single-clicking does nothing.

Thanks

[daveTW]

Hi Chris,
I can think of two possible reasons for this:

1. Lv has a problem with the mouse driver (reinstall, if possible {does the appearance of the cursor change when you hit the space bar or tab key?})
   
2. Lv itself is broken (is it the only unexpected behaviour in LV)
   

On the other hand I think it is very brave to develop with that old LV- Version on a Win95 System, wich is as far as I know quite buggy for itself. Lately NI gave the Version 6.1 for Mac and Linux on a german computers magazine for free download, the windows version is only available on the attached DVD. But if you don't mind to change to another OS (Linux), this could improve your developing.

greets, Dave

[chrisger]

hi there

be aware that the free 6.1 version dave mentioned ist NOT for commercial use. you have to retrieve the Serial Number from NI.

But the 6.1 version is really a giant hop compared with 4.x. you even can do event based programming.

[tst]

Maybe you used an NI DAQ card and have something like this.

[cchriste]

Hey guys, Thanks for your help. I tried reinstalling the mouse drivers, tried another mouse, and even checked to make sure only one mouse was installed, but nothing worked.

I am not using this old system by choice. LV is used to control some power supplies, and it has worked for years. So the thinking here is that if it ain't broke don't fix it. But I have only been here for a couple of months, and I do not know how long it has been since someone tried to do development. This could be the perfect excuse to get a new computer and new version of LV, but I am worried about having to reprogram all of the VIs if a new version cannot understand these v.4 ones.

[tst]

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@cchriste wrote:

So the thinking here is that if it ain't broke don't fix it.

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Guess what - it's broke.

For what it's worth, LV 8.x should be able to open VIs saved in LV 4 and run them without problems. You might get all kinds of notifications about changes that were made and if you're using some hardware stuff, it could potentially break, but it should basically work.

That said, you will need to test it after porting to see that everything still works the same.

Another point to consider is that the environment in LV 8 is somewhat different from that of the older versions. However, if you've only been doing this for a couple of months, you should probably be fine.

By the way, I suppose that you might be able to use LV 4 on a newer version of Windows (at least if you're not using any magic hardware and maybe even in that case). You might wish to talk to your local NI office about this.