Changing the property node from an control in an cluster raises an error in LV2011

Hi, all
when I run the code in LV2010 SP1 no problems.
But in LV2011 it gives an error.
Is this an BUG
Attachments:
test.vi ‏18 KB

Franzo,
It certainly is strange. The error comes from the Width property node, but it occurs when ReadoutMode is clicked. It does not need to be changed.
Wrapping it in an event structure (ReadoutMode: Value Change) seems to eliminate the error.
Questions for someone at NI who knows how these things work internally: It is also interesting that the data type of the Maximum property is always DBL, regardless of the datatype of the control. Should not a U16 control have a U16 Maximum? And what about the Extended datatype? How can a value larger than the maximum for a DBL be set via a property node of type DBL?
Lynn

Similar Messages

Property node of a control inside of cluster inside an array

I've created a control that has a cluster made of a Boolean, a String and a Numeric. Then in my front panel I've created an array of these custom controls. I would like to have access to the property of the controls inside of the cluster within the array. ie, I want to change the color of the Boolean or make it blink, or "disable and gray" the text box. I think I'm on the right track, or maybe I'm on the wrong path. I've attached and example VI (testtray.vi) and the control that I'm using (UUT_Display.ctl). Please excuse the use of a Flat Sequence Structure, I know it's poor programming practices, but I just wanted to throw something together.
Any help would be appreciated.
kevin
Solved!
Go to Solution.
Attachments:
testTray.vi ‏19 KB
UUT_Display.ctl ‏5 KB

I have enclosed a quick and dirty example of replicating the blinking in an array of clusters. You can turn it on and off, but as we have noted, only for all of the elements. If you were only showing one element of the array you could change properties based on which element was displayed. You probably want to see them all. In that case, you could use a cluster of clusters. This may be a pain, but I would suggest that you use an array of clusters to do your manipulations. Use Array->Cluster to convert to a cluster for display purposes. Then you can manipulate the properties of the cluster.
My guess is easier said than done, good luck.
Attachments:
Blink182.vi ‏98 KB

Is there a way the user can change the equation in the formular node from the front panel on the fly, dynamically?

Is there a way the user can change the equation in the formular node from the front panel on the fly, dynamically?

Sorry, I don't think so. That would be pretty cool if you could create a property node for a formula node and then enter a formula on the front panel and use it to update the formula. But you can't create a property node for a formula node and the only way of modifying the formula is by typing it into the formula node on the diagram. And you can't modify a diagram of a running VI.
You could create a VI which is only a formula node with the maximum number of inputs and outputs you expect. Have a button on the calling VI to Edit Formula. When the button is pressed, use a VI server to display the front panel on the formula VI, display a dialog box telling the user how to display the diagram of the formula VI, then stop the calling VI. (You can't edit a sub-VI while t
he calling VI is running). The user will then need to rerun the calling VI to use the new formula.
You might be able to do something by calling MatLab or something like that to get an interactive formula window.

Can we change the property of each element of an array using property node or by other methods?

Hello all,
Can we change the property of the elements of an array. For example:
I have an array of combo-boxes. Can i have such a scenario that different combo-boxes of the array will have different items to select an item.
I am able to set the different "values" in different combo-boxes bu using "to be more specific class" property node.
But i could not set the different item list in different combo-boxes.
Please give me the solution.

Thanks a million dave!!!!!
I have learnt a very new and innovative thing...
I just wanna ask you one more question in the above context.
Can i have listbox or combo-box in a table just like in an excel sheet where we can have listbox by using "data validation" property for different cells having different list.Can i have this in labview. Because for this i have to super-impose the combo-boxes on the table and treat them separately.
We have to take those combo-box values and put in table and then store it.I have attached one VI to show the scenario.
And this is the alternative solution of the array problem which u have already given. So please suggest me between the two or any alternative solution.
Thanks,
Ankit Madaan
Attachments:
Recording _Table.vi ‏19 KB

Is there a way the user to change the equation in the formular node from the front panel on the fly, dynamically?

Is there a way the user to change the equation in the formular node from the front panel on the fly, dynamically?

Try the Parser VIs (also known as LV Mathematics VIs, or simply GMath VIs) located under the Analyze>>Mathematics palette (not in the Base package). You might want to start with the "Eval Formual Node.vi" located in the Analyze>>Mathematics>>Formula palette. There are many differences between these G-based, dynamic formula VIs and the LabVIEW formula node, but these VIs often prove quite useful when your formula changes on the fly. For more detail on the differences, see the LabVIEW Help file (Cntrl-Shift-? from within LabVIEW) under the topic "Mathematics VIs, parser differences with Formula Node".

How can I change the property of a graph running in another VI ?

I know how to set a control value in another VI using the invoke node but what should I do to change the property of a control?

Hi Zumdal,
you can make a reference of your graph, copy it in a global variable that can be handled in a remote vi to change the property of the graph.
I attach a sample LLB that contains a graph.vi and a property.vi.
From the property.vi you can control the property of the graph.
Good luck,
Alberto
Attachments:
graph_property.llb ‏27 KB

I don't know how to use the property node to get information out of my sub vi while it is working.

I had a question answered earlier about passing information out of a sub vi, and was helped out. The problem is that I don't understand what is happening as I can not reproduce the results. I am now trying to take results of a comparison (true-false) and pass that back out of my sub vi. I tried a property node and to connect a refnum control to it in the sub vi. Then I tried to connect an indicator to its terminal in the main vi, but was unsuccessful can someone tell me how and why, step by step, to pass this information out. Starting with the point of information in the sub vi to the indicator in the vi. I would appreciate any help that you could give m
e.
Attachments:
Pass_a_Reference.vi ‏15 KB
GL_Flicker_mod.vi ‏77 KB

Step by step:
1. On your main vi Front Panel, create your boolean indicator.
2. On the block diagram, right click the new boolean indicator and select Create - Reference.
3. On sub-vi front panel, create boolean indicator (or use one that is already created).
4. On sub-vi front panel, create a reference (Controls Palette - Refnum - Control Refnum).
5. Right click on the newly created Refnum and select Select Vi Server Class - Generic - GObject - Control - Boolean. The refnum label changes to BoolRefnum.
6. On sub-vi block diagram, create Property Node (Functions - Application Control - Property Node). Find the BoolRefnum and move it close to the new Property Node.
7. Wire the BoolRefnum to the reference input of the property node.
8.
Right click on the property node and select Change to All Write.
9. Move mouse to point to Visible inside property node box, left click and select Value.
10. Wire the boolean indicator from step 3 to the Value input of the property node.
11. On sub-vi front panel, right click on icon and select Show Connector.
12. Click on empty connector spot then click on the new BoolRefnum. Save your sub-vi.
13. On main vi block diagram, connect refernece created in step 2 to the new connector terminal of sub-vi.
14. Save and run.
Here are the modified vi's.
- tbob
Inventor of the WORM Global
Attachments:
Pass_a_Reference.vi ‏20 KB
GL_Flicker_mod.vi ‏83 KB

Help comparing the value of a button using the Property Node (I get a variant)

Dear Sirs:
(I'm using LabView 6. I guess the solution is different for 6.1)
Currently I have created an array of Boolean RefNums (which point to many, many buttons). When I need to know when any (and which) of the buttons was pressed I just compare every element on the array with the constant TRUE. It fact, as the array is built from RefNums, I should compare the VALUE from the Property Node.
The problem here is that the Property Node for this type of Boolean is a LV Variant, and I need to compare this with a TRUE/FALSE value.
I tried to convert the TRUE constant to a LV variant and visc. But nothing works... I always get that none of the buttons was pressed.
Here it co
mes the question: "How can I compare the value of a Property Node for a Boolean (Button) with a TRUE (or False) constant?"
BTW, maybe I should explain why I'm using RefNums instead of the direct values: As my project requires tons of buttons, I would preffer using RefNums to refer to them. (I.E. I could use a single VI that takes the RefNum and formats the button to hide it for certain users).
I have enclosed a VI that contains what I've achieved until now, which is nothing
I appreciate your time and help.
Best regards,
JAVIER VIDAL
Attachments:
Other_Main_Menu.vi ‏103 KB

Javier,
There is another problem in your code: the booleans are not polled by the main loop so they will remain false until the user presses them again. This renders the boolean latch action useless.
What you can do is to change the mechanical action of the booleans to non-latch. When you detect a "true" in the polling loop, set the boolean to false again. One added benefit is that once all boolean are non-latch, the value property won't be a variant but a boolean so conversion is no longer needed.
LabVIEW, C'est LabVIEW

Updating a property node from a sub-vi

I want to have a string indicator box that updates as my program moves along, i have been using the property node this works fine in the main vi but now i want to update it from a sub iv. any ideas?

Tip: The easiest way to accomplish this is to do the following:
In your top-level VI that has the control right-click on it and select Create-->Reference. This will allow you to place a reference in top-level VI's block diagram.
Create a new VI that will be your subVI.
Drag and drop the reference object from the block diagram of your top level VI to the front panel of your new subVI. This will create a reference control on your subVI that is of the same type as the control on your top-level VI.
Connect the reference control on your subVI to a connection terminal, and then wire the reference object in your top-level VI's block diagram to the subVI's input terminal.
Then, in your subVI you can just use the standard "Property" and "Invoke" nodes to fiddle with the control.

Where can I find docs on all the property nodes

Are all the property nodes for things like waveform charts and graphs documented somewhere. I have looked throught all the .pdf files that came with LV ( at least I think I have ) and haven't been able to find what I'm looking for.
If someone could point me to where all these are documented I would be most appreciative.
Thanks.

The LabVIEW Help describes every VI Server property and method. The easiest way to find the help for a specific property and method is to select the property or method in the Property or Invoke Node, right-click the node, and select Help for xxx from the shortcut menu, where xxx is the name of the property or method.
In LabVIEW 6.0, you can browse the property and method help by selecting Help>Contents and Index, clicking the Contents tab, and navigating to Networking in LabVIEW>Properties and Methods.
In LabVIEW 6.1, select Help>VI, Function, & How-To Help, click the Contents tab, and navigate to Programmatically Controlling VIs>VI Server Properties and Methods.
Kelly H
LabVIEW Documentation
National Instruments

Add Intellisense support to the property node

I really hate having to dig through a long hierarchy of menus when I know what I want:
Visual Studio (and other MS and non-MS products) have a feature called Intellisense, which is meant to make this easier. Basically, as you type, it pops up a list of matching objects, based on context, so you can quickly select what you want:
It would be nice if LV had a similar feature - click on a property in the property node using the text tool (or Ctrl+click if using the auto-tool) and now you can type in the property name and you will get an Intellisense-like pop-up, which will have all the relevant properties.
Specific features it could have:
It should know all the relevant names - full names with the hierarchy (Boolean Text.Font.Color), long names (Mechanical Action) and short names (MechAction). This could probably be similar to how Quick Drop handles shortcuts or they could simply appear as separate items.
It should be context sensitive. If the class is Boolean, then there's no need to have Listbox properties in the list.
It should match all the properties which include the search string (so "in" on a boolean would match both "Indicator" and "Strings[]") and only them.
It should have the ability to use caps for acronyms (e.g. in the above screenshot you could use "BT" instead of "Boolean Text", similar to what appears in this video).
It could probably also work on the invoke node, although there it's less needed.
It could probably also be used to quickly select a class if you have a class specifier using the same basic mechanism.
This example (LV 2009) shows how useful this could be. You don't need anything installed. Just run the VI and start changing properties.
Caveats:
It will only work on the last property in the node.
It doesn't have the proper list of names and it doesn't implement all the features in the idea, as this is just a basic example.
Note - this is similar to this idea, but I think that it's much more usable. Also note that the second idea refers to a QDKS which ships with 2010, but that is far from perfect.

Here's a more detailed response.
Browser:
Click Ctrl+Shift+B.
Get a new window. Great. Just lost a little bit of focus on what I was doing.
Find the search button. Oh, there it is. It's that little button.
Oh, another window popped up. What did I want? ... ... ... Ah, yes. It was that property.
Search for it. OK, that was easy. Now Enter.
Oh, I'm back to the original browser window, but the property is highlighted.
OK, so now I can drag the property into the BD and get a new property node with that property, but that's not actually what I wanted. I wanted to set a property on an existing node.
So, to summarize: A key combo, some mouse activity, 3 window changes and we still didn't get what we want.
Compare that to:
Ctrl+Click on the property you want to replace.
Start typing.
The intellisense popup appears as part of the current window, already navigable with the up and down keys.
Press Enter.
And two additional points:
Imagine working in VS without intellisense. What if you had to use something similar to the browser (or the menu hierarchy) every single time you wanted to get a property?
You encourage people to work with LV classes. Property nodes offer a productivity enhancement when working with classes and this offers another one, so you not only not be questioning it. You should be evangalizing it.
And for those who survived this far, a bonus. This example (LV 2009) shows how useful this could be. You don't need anything installed. Just run the VI and start changing properties.
Caveats:
It will only work on the last property in the node.
It doesn't have the proper list of names and it doesn't implement all the features in the idea, as this is just a basic example.

Is there any function to change the width of froms'graphic ?

Hi All,
Is there any function to change the width of froms'graphic ?
May be like set***property.
Thanks,
ke xiong

Hi;
For your issue i suggest close your thread here as changing thread status to answered and move it to Forum Home » Application Development in PL/SQL » Forms which you can get more quick response
Regard
Helios

How can i change the particular node color in Jtree?

I have constructed the tree.i dont know how to set the color for the particular node then how can i change the particular node icon depends on some conditions like if we will give the input whether it is available in jtree that node icon only changed.Anyone please help me as soon as possible.

hi,
i saw that tutorial.from that book i dont get the particular node cell renderer.i got a cell renderer for tree only.i attached my code in this mail.pls see and help me if u will do
mport pack.Prop;
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Container;
import java.awt.Font;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Properties;
import java.util.Set;
import java.util.StringTokenizer;
import java.util.Vector;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.text.Position;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.DefaultTreeModel;
import javax.swing.tree.MutableTreeNode;
import javax.swing.tree.TreeCellRenderer;
import javax.swing.tree.TreePath;
public class ReadProperty3 extends JFrame{
String str,key;
static JTree tree;
static Vector v;
StringTokenizer st;
static DefaultMutableTreeNode root;
DefaultMutableTreeNode t;
public Object[] o;
public static void main(String[] args) throws IOException {
ReadProperty3 r = new ReadProperty3();
Prop p=new Prop();
JFrame f=new JFrame();
p.show();
Object[] o=v.toArray();
int startRow = 0;
String prefix =p.s;
TreePath path = tree.getNextMatch(prefix, startRow, Position.Bias.Forward);
//if(prefix.equals(root.getChildAt(0).toString()))
if(prefix.equals("2000"))
     System.out.println("Node 2000 found");
     else if(prefix.equals("3000"))
          System.out.println("Node 3000 found");
     else if(prefix.equals("4000"))
          System.out.println("Node 4000 found");
     else
          System.out.println("Node not found");
     for(int i=0;i<v.size();i++)
          //((DefaultTreeModel)tree.getModel()).reload();
          DefaultTreeCellRenderer ren=(DefaultTreeCellRenderer)tree.getCellRenderer();
          Icon openIcon = new ImageIcon("C:/apache-tomcat-5.5.12/webapps/jsp-examples/images/execute.gif");
          Icon closedIcon = new ImageIcon("C:/apache-tomcat-5.5.12/webapps/jsp-examples/images/execute.gif");
          Icon leafIcon = new ImageIcon("C:/apache-tomcat-5.5.12/webapps/jsp-examples/images/read.gif");
          if(o[0].equals(p.s))
               ren.setBackgroundSelectionColor(Color.MAGENTA);
               ren.setBackgroundNonSelectionColor(Color.YELLOW);
               //ren.setTextSelectionColor(Color.YELLOW);
               //ren.setTextNonSelectionColor(Color.BLUE);
               ren.setClosedIcon(closedIcon);
               ren.setFont(new Font("Impact",Font.ITALIC,14));
          else if(o[1].equals(p.s))
               ren.setLeafIcon(leafIcon);
               ren.setFont(new Font("Impact",Font.ITALIC,10));
               UIManager.put("Tree.leafIcon", leafIcon);
          else if(o[2].equals(p.s))
               ren.setOpenIcon(openIcon);
               ren.setFont(new Font("Dialog",Font.BOLD,9));
public ReadProperty3(){
     super("JTree With Properties");
     try{
int c = 0;
while(c == 0){
c = 1;
BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));
System.out.print("Enter file name which has properties extension :");
str = bf.readLine();
File f = new File(str + ".properties");
if(f.exists()){
Properties pro = new Properties();
FileInputStream in = new FileInputStream(f);
pro.load(in);
System.out.println("Key: " + pro.keySet());
System.out.print("Enter Key : ");
key = bf.readLine();
String p = pro.getProperty(key);
st = new StringTokenizer(p,"=,");
root=new DefaultMutableTreeNode(key);
v=new Vector();
while(st.hasMoreTokens())
     String val=st.nextToken();
     v.add(val);
     o=v.toArray();
     System.out.println(val);
     t=new DefaultMutableTreeNode(val);
     root.add(t);
     tree=new JTree(root);
     tree.setEditable(true);
     JScrollPane jp=new JScrollPane(tree);
     // tree.setCellRenderer(new CellRenderer());
     Container content=getContentPane();
     content.add(jp,BorderLayout.CENTER);
setSize(250,275);
setVisible(true);
addWindowListener(new ExitListener());
else{
c = 0;
System.out.println("File not found!");
catch(IOException e){
System.out.println(e.getMessage());
}

How to change the primary node for a resource group. Solaris cluster. 3.2

I have searched for hours to try to find this answer.
I want to change the primary node of a resource group.
example.
log-rg runs on node1.this.com it will list node1.this.com first when you do clrg status.
But we run it on node2.this.com
A reboot will have log-rg run on node1 after a reboot. We have to switch it by hand to run
on node2 .
I want it to know that it should always try to first run on node1, but still failover to node2 if the situation arises.
scswitch -z -g log-rg -h node2 (and all the fully qualified versions of this command)
would not work.
How tow can I change the primary node for log-rg (logZ) from node1 to node2???
thanks!

Hi.
Show current configuration for RG:
clrg show -v log-rg
For change order Nodelist you can:
clrg remove-node -n node1 log-rg
clrg add-node -n node1 log-rg
But tis command more destructive. It may be problem add-node back to this RG.
I don't know why Validation of resource log-tiv in res group log-rg on node1 failed.
Need more know about configuration, resourse type, etc.
May be it's better create for test small RG and try move and change resource.
Nodelist - say candidates for run this resources. But at this moment RG can run on any from this list.
Docs about Sun Cluster.
http://download.oracle.com/docs/cd/E19787-01/820-7360/fxjbo/index.html
Typical tasks:
http://download.oracle.com/docs/cd/E19787-01/820-7359/z40002701009474/index.html
Adding or Removing a Node to or From a Resource Group
http://download.oracle.com/docs/cd/E19787-01/820-7359/z400043a1055200/index.html

To update the Associate node from se38 program

Hi Expert,
I am trying to update the bobf root node and associate node under it.
This is BOBF EHFND_DATA_AMOUNT custom enhanced z_***** , i can able to update the root node but for associate node created after enhancement its not updating.
Code i used is
           APPEND INITIAL LINE TO lt_mod ASSIGNING <ls_mod>.
          <ls_mod>-node        = if_ehs_ih_ehfnd_data_am_c=>SC_NODE-/SDR/EHS_IH_AMNPPE_ITEM.
*          /sdr/if_ehs_ih_ehfnd_data_am_c=>sc_association-root-ehs_ih_amnppe_item.
          <ls_mod>-change_mode = /bobf/if_frw_c=>SC_MODIFY_CREATE.
          <ls_mod>-key         = lr_s_amnppe_item->key.
          <ls_mod>-data        = lr_s_amnppe_item.
          <ls_mod>-association = /IF_EHS_IH_EHFND_DATA_AM_C=>SC_ASSOCIATION-/SDR/EHS_IH_AMNPPE_ITEM-/SDR/EHS_IH_AMNPPE_ITEM.
          <ls_mod>-source_node = if_ehfnd_amn_c=>SC_NODE-ROOT.
          <ls_mod>-source_key = lv_key.
          <ls_mod>-root_key    = lv_key.
*      Create the Amount record:
      CALL METHOD lo_driver->mo_svc_mngr->modify
        EXPORTING
          it_modification = lt_mod
        IMPORTING
          eo_change       = lo_change
          eo_message      = lo_message.
            "Check for errors:
      IF lo_message IS BOUND.
        IF lo_message->check( ) EQ abap_true.
          lo_driver->display_messages( lo_message ).
          RETURN.
        ENDIF.
      ENDIF.
      "Apply the transactional changes:
      CALL METHOD lo_driver->mo_txn_mngr->save
        IMPORTING
          eo_message = lo_message
          ev_rejected = lv_rejected.
      IF lv_rejected EQ abap_true.
        lo_driver->display_messages( lo_message ).
        RETURN.
      ENDIF.
but the above code is not helping to update the associate node from se38 program.
Regards
Sasikumar S
Can anybody help me on that thanks in advance.

Hi Sasi,
According to what you have written above, You want to update a Z node under a root node.
But in the coding for association you have written a standard node.
Give the name of the Z interface which is created and in that you will have the 'Z' custom created node.
Try this.
ls_mod>-association = "Z Interface"=>SC_ASSOCIATION-"root_node"-znode.
Hope this helps you.
Regards,
Sanket Vaity.

Changing the property node from an control in an cluster raises an error in LV2011

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