LabVIEW Idea Exchange

I'd like to have the ability to save a LabVIEW search (Find), with some commonly used parameters.  It might be nice to choose between saving the search globally, or in a project.

 

Also, I'd like to be able to recall recent search results.  Often, my searches are hierarchical: I search for some high-level stuff and then do a more specific search.   I don't want to lose my high-level search results, when I drill down and do a more low-level search (for example, the low-level search might be fruitless, so I need to go continue on with the rest of the results from my high-level search).

Having a complete API for zip file

Currently it has :
- New zip file
- Add a file to zip file
- Close zip file and add a comment
- unzip the zip file to a folder

This API is not quite complete.

Example of use of ZIP files: In a data streaming application, you want to make an archive of recordings files. The data files average 500 MB Once compressed, they do more substantive than 50MB. You create an interface to assist the user in steps of compression. Once compressed, you want to propose an interface for retrieving compressed recordings.

The ideal is to list the files and clarify some information, such as track number, recording time and a few other indicators related to data.

But to do that, we 'could' use two ways:
- The properties of the zip file.
- An additional file that would read that to see them.

 

Several problems arise:
- It is not possible to read the commentary added with the close function.
- It is not possible to edit the commentary added with the close function.
- It is not possible to decompress a single file.
In the example, if we unpack all files to read properties, it'll take time and a lot of CPU resources.

 

It would require full management functions:
- New file
- Close file
- Add a comment
- Read the comment
- Erase the comment
- Add a file
- Delete a file
- List all file (with or without a mask)
- Uncompress a zipped file to disk
- Uncompress a zipped file to memory

- compress and uncompress a string in memory (usefull to optimise the network data flow)

 

In the ideal case, a zip file should be considered a folder. So we have all classical file functionality to manage it.

Hi,

 

Another behavior that I find annoying isthe way LabVIEW manage the tabbing order with cluster.

 

Imagine a front panel with clusters (I thinkthat this is not unusual and that you will have no pain to imagine this). If acontrol embedded in a cluster has the key focus, the TAB key will only give thefocus to controls of this cluster. It is impossible to navigate outside thecluster!

 

In the following front panel I wouldexpect the following sequence when tabbing: Cluster_1.String_1 -> Cluster_1.String_2-> Cluster_1.String_3 -> Cluster_2.String_1 -> Cluster_2.String_2-> Cluster_2.String_3 -> Cluster_1.String_1 -> …

(According to  the cluster tabbing order)

 

 

 

Hi,

 

Key navigation is essential when a PC isused in an industrial environment that limits the use of the mouse (rackedsystems on production lines, temporary connection with a laptop to an RT target, etc.).

 

One lack is the impossibility to associatea simple shortcut key to a Boolean control (CTRL+S for example).

 

 

 

Of course we can catch the key down event in a newcase of an event structure. But, we then have two cases forone action (one for the shortcut key and one for the Boolean value changed),what is not practical.

 

In addition, since LV 8.0 (I guess!) it is notpossible to underline one letter of a Boolean text to stress the shortcut keyassociated with the control.

 

 

 

From my point of view, this is an essential fonctionnality of any development system.

 

Populating the Tree Control with items takes very long time.  I suggest improving the performance of a tree control.  Many other applications have tree controls that are populated in a small amount of time, so it should be possible with LabVIEW.

 

I know of three ways to populate a tree control.  The first is to individually add items using the Add Item invoke method.  This method takes a very long time.  Adding 15,000 entries took over 180 seconds.

 

The second way is to use the"Add Multiple Items to End" invoke method.  This took over 20 seconds for 15,000 entries.

 

The third way is to programatically respond to the user expanding an item in the tree and populating only as necessary.  I assume that this is fast, but it seems like a lot of work to do every time a tree control is used that could have a lot of items. Maybe LabVIEW could improve performance by using the third approach internally for the programmer. 

 

Currently I am hesitant to use a tree control because of performance.  LabVIEW is a great product, and making the tree control perform better would improve LabVIEW even more.

 

Actualy when we select a cluster Bundle or Unbundle when you hit ctrl-f you get this find dialog:

  CTRL-F ->

 

What I want is to select the text in the cluster and get text Find dialog:

 

 CTRL-F ->¨

 

Plus... that should work for Property Node and Invoke Node

When I am searching for occurrences of a particular items in my application, I often run into this issue: The search feature only allows you to search for text or a type of object, but not both.  If I need to find a particualr VI Server method call, I can either search for all invoke nodes (which returns WAY too many to sort through) or I can search for the text in the method name, and end up with results that have nothing to do with invoke nodes.

What we need here is the ability to specify multiple search criteria and logical operators to tie them together.  So, I could do a search for invoke nodes with the text 'Abort' in their name.  This would be a big help in large applications as well as those that use a lot of VI Server or .NET code. 

I would like to be able to make static event registrations for an element that is contained within an array. Note: this is not just a registration of an event that happens to the array, but an event that happens to an element in the array.

 

This can currently be achieved with dynamic event registration, but I would like static event registration for two reasons: less code, and dynamic event registration must occur with a FP showing whereas static event registration never errors (meaning dynamic events can pose a problem for plug-in architectures using SubPanels).

 

 Here's one specific example achieved with the current method of dynamic event registration. I have an array of a cluster that has two elements, but I only want to know when a user clicks on the Boolean.

 

I want to be able to statically register that same event, which would look something like this (in 8.6.1):

 

 

As a bonus, as part of the event data cluster on the left-hand side of the event structure, I would like an I32 array called "Index" that gives the multi-dimensional index of the item clicked.

In the Application Builder dialog under the icon category, you have the option to create an icon using the icon editor.  After you complete this and save it, you are brought back to the app builder dialog.  However you still have to select the icon file and add the .ico file to the project.  This should automatically be added when an icon file is saved from the icon editor.