What is the best way to pass a constant to a cin expecting a pointer to a value?

I have a cin which has a leg that is expecting a pointer to a value. On the diagram, what is the best way to connect a constant widget to this leg of the cin? Connecting it directly crashes labview as it treats the constant as a pointer to memory.
Thanks

I am not sure that I understand your issue. CIN variables can be Input-Output or Output only. Either way, they are being passed in as a pointer to a value. You can see this very easily by placing down a CIN and wiring a constant integer to it. Next, right-click on the CIN and create the C file. You will see that the parameter list has an int* in it.
If you are still having problems, do you have to create a CIN or can you create a DLL instead? The DLL will give you a few more ways to pass the data than a CIN does with no real performance decrease.
Also, have you read the "Using External Code in LabVIEW" manual? This hsould answer some questions as well.
Randy Hoskin
Applications Engineer
National Instruments
http://www.ni.com/ask

Similar Messages

  • What is the best way to pass a var from php to a swf to swf

    Hi,
    Whats the best most correct or professional (less chances of error or most efficient) way of sending a var from php to a swf container and then to a swf that is loaded with the loader class from the container???
    Thanks

    Hi Kglad thanks for the answer,
    Yes using AS3, I think I didnt give u enough info though.
    The thing is the php file is actually the index file which has the first swf lets call it conatiner.swf embeded and conatiner.swf then calls the other swf lets call it main.swf by using URLloader. So I dont think I can user URLloader on the index.php file, and I cant put the code in another .php file and call it because I need data from the index.php file specifically.
    Any ideas?
    I know I can use flash vars for the first step of the index.php to container.swf but im trying to avoid it cause im not so familiar with it or embedding and theres two diferent embedding methods im using depending on the site and im probably going to have to change them again later on cause im still having an issue.
    Thanks

  • What is the best way to pass a controllin​g signal out of a sub vi or more than one layer of for loop, while the sub vi or for loops are still running?

    I have a vi that runs through two for loops and a while loop, then after a certain number of iterations on the inner while loop it is supposed to pass a trigger to a case stucture to start measurement. I have tried using a local variable attached to a boolean control which in turn is attached to the true case of the case structure involving the measurement sub vi. What is happening is that the boolean control will light on the front panel at the correct # of iterations in the while loop, as if true, but the measurement is not taken, and the boolean control never goes back to false. It remains lit. Am I u
    sing the local variable incorrectly? If so, where am I going wrong.
    Attachments:
    GL_Flicker.vi ‏118 KB
    Take_Measurements.vi ‏147 KB

    Hello planar,
    There are multiple ways to pass control information between loops and VIs and each one has its place. For simple VIs like your example, a local variable will be fine.
    The main reason the subVI is not running is that the case structure is not continuously polling the Boolean control. This is because the case structure is not inside a loop and as such will only read the Boolean value once and execute once. Encasing the case structure and control inside the while loop should solve the issue of the subVI not running.
    You may find the following links of help in creating more robust and advanced VI architectures.
    Application Design Patter
    ns: Master/Slave
    LabVIEW Application Design Patterns
    Keep up to date on the latest PXI news at twitter.com/pxi

  • What is the best way to pass the web url of a link embedded in a PDF document?

    I have a WPF app in which is hosted an instance of axAcroPDF. I've included it via a System.Windows.Forms.UserControl that is a child of a System.Windows.Forms.Integration.WindowsFormsHost.
    The PDF Document is essentially a flow chart in which there are links that are currently set to open a webpage by url. When the links are clicked in a standard adobe Acrobat X application they work fine, however when they are clicked within the WPF application's axAcroPDF component nothing happens. Furthermore I have also on another tab within my app a System.Windows.Controls.WebBrowser on which I would like the linked url's to be opened. I need to construct a method, event listener and event handler so that when the link in the pdf file is clicked in the axAcroPDF object the url is passed to a method that will call System.Windows.Controls.WebBrowser.Navigate() passing it the url as an argument. I've saught help within the WPF developer community and got some advice to use the "execute a javaScript" link behavior to call a method within my WPF app passing it the url as a string argument, but have been unable to implement this within my code. I click the link with the javascript but it does not result in a method call of the method in my WPF app. Can anyone help me with possibly a more simple way to just listen for the event that already exists with the "open a web link" action?
    Thanks for any help,
    Matthew

    Moved to Acrobat SDK

  • What is the best way to remove all info from a MacBook Pro before passing it along to someone else?          passing it on to someone?

    What is the best way to remove all info from a MacBook Pro before passing it on to someone else?

    Read this: http://www.tuaw.com/2010/09/24/mac-101-preparing-your-old-mac-for-sale-or-recycl ing/

  • What is the best way of dealing with an "implicit coercion" of an array to a sprite?

    Hello everyone!
         With continued help from this forum I am getting closer to having a working program. I look forward to being able to help others like myself once I finish learning the AS3 ropes.
         I will briefly explain what I am trying to achieve and then follow it up with my question.
    Background
         I have created a 12 x 9 random number grid that populates each cell with a corresponding image based on each cell's numeric value. I have also created a shuffle button that randomizes the numbers in the grid. The problem I am running into is getting my button-click event to clear the current images off the grid in order to assign new ones (i.e. deleting the display stack objects in order to place news ones in the same locations).
    Question
         My question is this: what is the best way to handle an implicit coercion from an array to a sprite? I have pasted my entire code below so that you can see how the functions are supposed to work together. My trouble apparently lies with not being able to use an array value with a sprite (the sprite represents the actual arrangement of the grid on the display stack while the array starts out as a number than gets assigned an image which should be passed to the sprite).
    ============================================================================
    package 
    import flash.display.MovieClip;
    import flash.display.DisplayObject;
    import flash.events.MouseEvent;
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.utils.getDefinitionByName;
    public class Blanko extends MovieClip
          // Holds 12*9 grid of cells.
          var grid:Sprite;
          // Holds the shuffle button.
          var shuffleButton:Sprite;
          // Equals 12 columns, 9 rows.
          var cols:int = 12;
          var rows:int = 9;
          // Equals number of cells in grid (108).
          var cells:int = cols * rows;
          // Sets cell width and height to 40 pixels.
          var cellW:int = 40;
          var cellH:int = 40;
          // Holds 108 cell images.
          var imageArray:Array = [];
          // Holds 108 numerical values for the cells in the grid.
          var cellNumbers:Array = [];
          // Constructor calls "generateGrid" and "makeShuffleButton" functions.
          public function Blanko()
               generateGrid();
               makeShuffleButton();
      // Creates and displays the 12*9 grid.
      private function generateGrid():void
           grid = new Sprite;
           var i:int = 0;
           for (i = 0; i < cells; i++)
                cellNumbers.push(i % 9 + 1);
           trace("Before shuffle: ", cellNumbers);
           shuffleCells(cellNumbers);
           trace("After shuffle: ", cellNumbers);
           var _cell:Sprite;
           for (i = 0; i < cells; i++)
                // This next line is where the implicit coercion occurs. "_cell" is a sprite that tries
                   to temporarily equal an array value.
                _cell = drawCells(cellNumbers[i]);
                _cell.x = (i % cols) * cellW;
                _cell.y = (i / cols) * cellH;
                grid.addChild(_cell);
      // Creates a "shuffle" button and adds an on-click mouse event.
      private function makeShuffleButton():void
           var _label:TextField = new TextField();
           _label.autoSize = "center";
           TextField(_label).multiline = TextField(_label).wordWrap = false;
           TextField(_label).defaultTextFormat = new TextFormat("Arial", 11, 0xFFFFFF, "bold");
           _label.text = "SHUFFLE";
           _label.x = 4;
           _label.y = 2;
           shuffleButton = new Sprite();
           shuffleButton.graphics.beginFill(0x484848);
           shuffleButton.graphics.drawRoundRect(0, 0, _label.width + _label.x * 2, _label.height +
                                                _label.y * 2, 10);
           shuffleButton.addChild(_label);
           shuffleButton.buttonMode = shuffleButton.useHandCursor = true;
           shuffleButton.mouseChildren = false;
           shuffleButton.x = grid.x + 30 + grid.width - shuffleButton.width;
           shuffleButton.y = grid.y + grid.height + 10;
           this.addChild(shuffleButton);
           shuffleButton.addEventListener(MouseEvent.CLICK, onShuffleButtonClick);
      // Clears cell images, shuffles their numbers and then assigns them new images.
      private function onShuffleButtonClick():void
       eraseCells();
       shuffleCells(cellNumbers);
       trace("After shuffle: ", cellNumbers);
       for (var i:int = 0; i < cells; i++)
        drawCells(cellNumbers[i]);
      // Removes any existing cell images from the display stack.
      private function eraseCells(): void
       while (imageArray.numChildren > 0)
        imageArray.removeChildAt(0);
      // Shuffles cell numbers (randomizes array).
      private function shuffleCells(_array:Array):void
       var _number:int = 0;
       var _a:int = 0;
       var _b:int = 0;
       var _rand:int = 0;
       for (var i:int = _array.length - 1; i > 0; i--)
        _rand = Math.random() * (i - 1);
        _a = _array[i];
        _b = _array[_rand];
        _array[i] = _b;
        _array[_rand] = _a;
      // Retrieves and assigns a custom image to a cell based on its numerical value.
      private function drawCells(_numeral:int):Array
       var _classRef:Class = Class(getDefinitionByName("skin" + _numeral));
       _classRef.x = 30;
       imageArray.push(_classRef);
       imageArray.addChild(_classRef);
       return imageArray;
    ===========================================================================
         Any help with this is greatly appreciated. Thanks!

    Rothrock,
         Thank you for the reply. Let me address a few things here in the hopes of allowing you (and others) to better understand my reasoning for doing things in this manner (admittedly, there is probably a much better/easier approach to what I am trying to accomplish which is one of the things I hope to learn/discover from these posts).
         The elements inside my "imageArray" are all individual graphics that I had imported, changed their type to movie clips using .Sprite as their base class (instead of .MovieClip) and then saved as classes. The reason I did this was because the classes could then be referenced via "getDefinitionByName" by each cell value that was being passed to it. In this grid every number from 1 to 9 appears randomly 12 times each (making the 108 cells which populate the grid). I did not, at the time (nor do I now), know of a better method to implement for making sure that each image appears in the cell that has the corresponding value (i.e. every time a cell has the value of 8 then the custom graphic/class "skin8" will be assigned to it so that the viewer will be able to see a more aesthetically pleasing numerical representation, that is to say a slightly more fancy looking number with a picture behind it). I was advised to store these images in an array so that I could destroy them when I reshuffle the grid in order to make room for the new images (but I probably messed up the instructions).
         If the "drawCell" function only returns a sprite rather than the image array itself, doesn't that mean that my "eraseCells" function won't be able to delete the array's children as their values weren't first returned to the global variable which my erasing function is accessing?
         As for the function name "drawCells," you have to keep in mind that a) my program has been redesigned in stages as I add new functionality/remove old functionality (such as removing text labels and formatting which were originally in this function) and b) that my program is called "Blanko."
         I will try and attach an Illustrator exported JPG file that contains the image I am using as the class "skin7" just to give you an example of what I'm trying to use as labels (although it won't let me insert it here in this post, so I will try it in the next post).
    Thank you for your help!

  • What is the best way of converting a Top Level VI into a 'sub vi' - or function ( without duplicating programming)

    Hi,
    General question here about design architecture, which i keep running into, but haven't found a really good solution.  If i write a 'Top Level VI' to do something, what is the best way of converting it into a subVI - which is call-able from other VIs, while still allowing the top level VI to have synchronised feedback/indicator updates.
    I guess the point is that when something is a top level VI you write gui logic about what happens when someone clicks buttons or whatever - which you don't want in the 'sub vi' version.
    I did at one point try having a hidden boolean button that was an input to the subVI which would let the VI know if it was supposed to be doing the front panel stuff - or simply running as a subVI.  This isn't really ideal though - since it would be better to be able to hive off the grizzly useful stuff from the fluffy - front panel updating stuff - having them together makes the VIs rather untidy.  More annoyingly though, if you have the front panel version of it running - say waiting for you to hit 'go', it breaks all the other VIs that use it as a sub vi - since they can't compile when a sub vi is already running.
    Another possibility that i tried was to basically duplicate the vi so that there was a backend part, and a front end part - and when i click 'go' the backend part is called as a sub vi.  The problem with this is that it really limits the interface that the user gets - since none of the controls on the front panel update with the results untill the sub vi is over.  I guess again i could solve this by passing references to some of the controls to update them in the subvi - but this doesn't really seem like the ideal situation if the subvi is called by something else without the same types of controls etc.
    One final idea i had was to essentially paste all the controls in the VI into a global variable file, and make the sub vi update them, and the front panel VI read from them.  This seems to 'work' - although clearly it is a work around rather than a proper solution - since i spend loads of time worrying about how i update cluster variables in the global - reading and writing.
    Does anyone have any guidance on what they do to solve this problem?
    JP

    You could run a subvis in a Subpanel on your top level.  Lets you see the current data while the subvi is running.
    --Using LV8.2, 8.6, 2009, 2012--

  • What's the best way to deal with floating point errors?

    What's the best way to deal with the decimal number errors in Flex?
    Lets say I have:
    var number1:Number = 1.1;
    var number2:Number = 1;
    var result:Number = number1 - number2;
    trace(result);
    I get "0.10000000000000009".
    What's the best way to deal with this so that i get the right result?
    Using the trick: result = Math.round( result * Math.pow(10,13) ) / Math.pow(10,13); is not useful as such when using big numbers.
    For example, If number1 = 100000000001.1, and number2 = 0.2, I get "100000000000.90001" as result. The previous rounding fixes rounding errors after 13th decimal, but here the first rounding errors come after 4 digits.
    The toPrecision method in Number and NumberFormatter dont seem be of use by themselves because of the same reason.
    So I'd have to check how big the number is, and then round the number based on that.
    So far I've constructed a method that does that with logarithms like this:
    public function floatFix(number:Number):Number{
          var precision:int = 14-Math.floor(Math.log(Math.abs(number))*Math.LOG10E);
          var precisionFactor:Number = Math.pow(10, precision);
          return Math.round(Number(number*precisionFactor))/precisionFactor;
    It just seems rather odd that one would have to create and use something like that to just count 1.1-1; There's a lot of calculating in that method, and i'm guessing that having to use that in a loop could slow down a program quite a bit.
    I think there really should be a pre-built method in flex for something like this, but I can't find any.
    Anyone know any better/faster ways?

    Use the application server database pooling services to create a datasource that can be access using JNDI.
    Move the database access code to a Servlet so that a JSP submits a form to the Servlet that does the database access and packages the data into a bean which is passed to another JSP to be displayed.

  • What is the best way to get data to a user interface?

    Hi,
    I'm using labview 6i. I have an application with a handful of "core" vi's that actually run my application, doing the data acquisition, analysis, and control. I am currently using these same vi's for my user interface. I also have a number of vi's that contain menu's for configuring the "core" vi's. My questions is, what is the best way to seperate the "core" vi's from the user interface vi's. Global's, data socket, control references, others?
    Thanks for the help.

    Hi Sal,
    I have been a strong advocate of control refnums ever since LV 6i hit the streets. I recomend you look into using them to provide this conectivity.
    You could accomplish this by using a variation on the following.
    In your UI, create refnums for each of the controls or indicators that must be monitored or updated. Pass the appropriate refnums to each of the "core.i's" at program init time. Inside each of the core.vi's, use property nodes to read the control's values when appropriate and similarly for display purposes. (Note: Not all boolean mechanical actions are compatible with this technique. In those case you will have to explicitly write false values after find the control to be true or vise versa).
    By using this technique, you can keep the UI diagrams clea
    n. Depending on your app. the UI diagram could consist of the init's I mentioned above, and a while loop that watches if it's time to exit.
    Ben
    Ben Rayner
    I am currently active on.. MainStream Preppers
    Rayner's Ridge is under construction

  • What is the best way of integrating rules to a J2EE (EJB 3) application ?

    We are working in a J2EE(EJB3) project which we plan to validate business logic using rule engine(JBoss rule). What is the best way of integrating the rule engine to the application ?
    Does rule engine good for validating a large no of data volume ? (asserted as an objects)

    I don't see a big switch construct. How about trying the following:
    Call this method from your original method by passing the resultset obtained.
    public String[] convert(ResultSet rs) {
         int col = ((ResultSetMetaData) rs.getMetaData()).getColumnCount();
         String[] record = new String[col];
         int i=0;
         while(rs.next()) {
              if(rs.wasNull()) record[i] = new String();
              else record[i] = rs.getString(i);
              i++;
         return record;
    iDriZ

  • What is the best way of compressing a large 3 hour final cut file

    What is the best way of compressing a large 3 hour final cut file. I shot the play and it is in final cut and I rndered it so now I have a 22gb file that I need to put on a dvd . Any suggestions
    Thanks
    Macbook Pro
    2.3 GHz Intel Core i7
    with Final Cut Pro 7.0.3
    using Lion as operating system

    Presuming your menus aren't complicated(include audio or video) the total size for the MPG-2 and AC3 files should probably be under 8GB for a dual layer disk. The inspector will tell you the estimated size. 2-pass varible bit rate would be recommended.
    Trying to fit 3 hours on a DVD-5 will only bring very noticable quality hits. Compressor will let you change the average bit rate so that you can fit 174 minutes but trade-off isn't worth it in my opinion.
    Be aware that dual-layer -R and +R media may not play well for everyone everywhere.
    I presume you are not making 1000 or more copies? If you were replication could solve this.
    One other alternative would be to break-up the show into two parts and spread it across two DVD-5s.

  • I am giving away a computer, what is the best way to wipe out data prior to depature

    i am giving away a computer, what is the best way to wipe out data prior to depature

    Did the Mac come with two grey disks when new? If so, use disk one to erase the drive using Disk Utility and then re-install the OS from the same disk. Once installed, quit and when the new owner boots they can set it up as a new out-of-the-box Mac when they boot it up. The grey disks need to be passed on with the computer.
    If you need detailed instructions on how to erase and re-install please post back.
    If the Mac came with Lion or Mountain Lion installed the above process can be done using the Recovery HD as since Lion no restore disks are supplied with the Mac.
    The terms of the licence state that a Mac should be sold/passed on with the OS installed that was on the machine when new (or words to that effect).

  • What is the best way to create a database schema from XML

    What is the best way to create a database schema from XML?
    i have  a complex XML file that I want to create a database from and consistently import new XML files of the same schema type. Currently I have started off by mapping the XSD into Excel and using Mysql for Excel to push into MySQL.
    There must be a more .net microsoft solution for this but I cannot locate the topic and tools by searching. What are the best tools and way to manage this?
    Taking my C# further

    Hi Saythj,
    When mentioning "a database schema from XML", do you mean the
    XML Schema Collections? If that is what you mean, when trying to import XML files of the same schema type, you may take the below approach.
    Create an XML Schema Collection basing on your complex XML, you can find
    many generating tools online to do that.
    Create a Table with the above created schema typed XML column as below.
    CREATE TABLE youTable( Col1 int, Col2 xml (yourXMLSchemaCollection))
    Load your XML files and try to insert the xml content into the table above from C# or some other approaches. The XMLs that can't pass the validation fail inserting into that table.
    If you have any question, feel free to let me know.
    Eric Zhang
    TechNet Community Support

  • What is the best way to create CRUD datagrids

    What is the best way to create CRUD datagrids that tell CF
    components to update sql tables. I find that I'm having to vreate
    all these columns with custom properites and its a bit of a chore:
    <mx:DataGridColumn id = "NatWest" dataField="NatWest"
    headerText="NatWest" editable="false"
    wordWrap="true"
    textAlign="right"
    headerStyleName="centered"
    labelFunction="price_labelFuncNatWest"
    sortCompareFunction="price_sortCompareFunc">
    I don't really want to use any wizards as I want control over
    my code.

    Hi Saythj,
    When mentioning "a database schema from XML", do you mean the
    XML Schema Collections? If that is what you mean, when trying to import XML files of the same schema type, you may take the below approach.
    Create an XML Schema Collection basing on your complex XML, you can find
    many generating tools online to do that.
    Create a Table with the above created schema typed XML column as below.
    CREATE TABLE youTable( Col1 int, Col2 xml (yourXMLSchemaCollection))
    Load your XML files and try to insert the xml content into the table above from C# or some other approaches. The XMLs that can't pass the validation fail inserting into that table.
    If you have any question, feel free to let me know.
    Eric Zhang
    TechNet Community Support

  • What is the best way to call a pageflow action from JavaScript?

    What is the best way to call a pageflow action from JavaScript?
    Thanks,
    John

    John,
    How would I do this from a grid??? Unfortunately there are no JavaScript attributes
    on any of the grid tags that I can see.
    Thanks,
    John
    "John H" <[email protected]> wrote:
    >
    Thanks John!
    "John Rohrlich" <[email protected]> wrote:
    John,
    If you want to put up a confirm dialog before calling an action from
    an
    anchor it is done as follows.
    Here is an example from code of mine that deletes a customer order,if
    the
    user confirms the delete. I pass the order id as a parameter.
    - john
    Here is the JavaScript -
    function confirmDelete() {
    if(confirm('Continue with order delete?'))
    return true;
    else
    return false;
    Here is a sample anchor tag -
    <netui:anchor action="requestToDeleteOrder" onClick="return
    confirmDelete(); return false;">
    Delete
    <netui:parameter name="orderId" value="{container.item.orderId}"/>
    </netui:anchor>
    "John H" <[email protected]> wrote in message
    news:402138f5$[email protected]..
    Thanks for the replies. I figured it was going to require buildingmy own
    url
    to call the action. I had hoped there was an easier way to do it.Rich,
    the
    reason I want to do this is because I want to call the JavaScript
    function
    confirm()
    when a user clicks on a link (in a repeater/grid) to drop a record,I only
    want
    to call the drop action if the user confirms the drop. Maybe thereis a
    better
    way to do what I am trying to do??? I really appreciate any help
    you
    guys
    can
    give me on this, I am pretty new to this sort of stuff.
    Thanks,
    John
    "Rich Kucera" <[email protected]> wrote:
    "John H" <[email protected]> wrote:
    What is the best way to call a pageflow action from JavaScript?
    Thanks,
    JohnTry figuring out the URL to the pageflow action, create a hidden
    form
    in the
    page, then use JS to submit the form. Why would you want to though,
    isn't
    the server going to want to send you to the next page?

Maybe you are looking for

  • Error while creating Contingent worker by api

    we are going to create contingent worker by HR_CONTINGENT_WORKER_API.create_cwk api,but i am unable to create record and getting error "A person type with a system person type CWK must be specified", Pleae advice,what could be mistake.

  • Just bought photoshop elements 12 and premiere elements 12 bundle for my MacBook Air, how do I download without a CD drive?

    I bought the bundle with adobe photoshop elements 12 and adobe premiere elements 12 for my new MacBook Air. I was told that not having a CD drive wouldn't be a problem for the download, but I can't figure out how to download them without being able t

  • Problem with Timestamp

    Hi I am using Oracle 10.1.0.4. When I am storing events with the received timestamps, it stores in GMT. But I am calling the stored procedure with timestamp in IST. Similarly when I search for that using IST, It returns the results matching the corre

  • Need solution for using Symbol LRT3840 with Apps 10.7 and/or 11i?

    Any suggestions for using Symbol's scanner/terminal with Oracle 10.7 and/or 11i? The symbol unit runs a telnet session (with a 1/4 viewable area). I'm looking for some alternate screen templates and/or a software solution that will allow me to remap

  • Hard drive image

    I am going to get a new MBP and want to know if it is possible to completely duplicate the hard drive on my iMac and install it on the new MBP. I have a lot of programs on my iMac from my old job, like CS3, and want them on my new MBP but do not have