Programmatically causes listbox/multicolumn listbox scroll



-> Top line property node

Tags: NI Software

Similar Questions

  • How do I insert lines programmatically in a multicolumn Listbox

    How can I programmatically insert a new row in a multicolumn Listbox?  Is there a way to access the function that is executed when I right click on a multicolumn Listbox and select 'insert row before '?  This function synchronizes the cell formatting (font color, etc.) after the insertion of the new line.

    I have implemented this by using 'Element names' and 'CellFontColor' property nodes, but it takes much too long when handling a rows of 80 ~ x ~ 80 columns multicolumn Listbox.  Right click and select 'Insert the front row' are instantaneous.

    Thank you


    Hi Chris,

    Use DeferPanelUpdate when handling the list box...

  • multicolumn ListBox scroll down to the last line - with AutoSize on

    Hello world:

    I have a question about scroll to the last row of a listbox multicolumn with a small twist: automatic resizing line Heght is on.

    I checked this point - listbox multicolumn - scroll down to the last element - but if one or several lines are automatically resized to have more than one line, then the actual number of visible lines differs from the numrows and the calculation ends up incorrect.

    Has anyone found how to do this?  If there is a property only to find the heght of a line in lines...

    Thank you!

    I developed what I think it's a solution to the test.  It is based on adding the line heights, in pixels, of the last row back, until it is greater or equal at the height of the content area of Listbox MC, also in pixels.  Add-on for the upper left row to display because the last line displayed can be split.  Thus, there is always an empty line at the bottom (which is the only way to ensure that the last message is completely visible).  Because of the way that LabVIEW scrolls lined with several lines, there may be several blank lines on the bottom.

  • enable a disabled ListBox scrolling

    I have a multi column listbox (MCL) on my façade that is filled with a list of every test performed on a unit. When the user select choose a test case, the tests to be performed in the case of test are selected (highlighted) in the list box.

    By default, the control of the MCL is disabled, but by pressing a button, the user can change the sequence. To do this, I use the disable of the MCL property. The issue I'm facing is when the MCL is disabled, we cannot use the scroll bar to see the entire list to validate the selected tests. The disabled items property is not a solution because it greys the elements and deselect.

    An idea for a workaround?


    Create a transparent control of chain that is the size of the MCL and place it above and in front of the MCL. Disable this control when you want to prevent the change. Let the exposed scroll bar and you should get the features you want.

  • The definition of dataProvider programmatically causes null reference

    I am trying to bind a drop-down list box to a list of countries via a HTTPService which returns xml code. If I set the dataProvider and declaratively labelField properties in the mxml, then it works fine. However, if I try to set it programmatically in the method that is called after the called HTTPService returns, then I get "TypeError: Error #1009: cannot access a property or method of a null object reference."

    Here is the dataServiceResult method:

    private var _lookupData:XML;

    public void dataServiceResult(event:ResultEvent):void
    _lookupData = event.result as XML;

    cboCountry.dataProvider =;
    cboCountry.labelField = "@name";

    This causes the above error. However, if I have the last two lines of the method in comment and change the combo box return to resemble what follows, then it works fine:

    < mx:ComboBox id = "cboCountry" styleName = "RequiredFieldLabel".
    dataProvider = "{}" labelField="@name" "
    change = "countrySelected ()" >
    < / mx:ComboBox >

    Any ideas? Declarative binding will work in this particular situation, but I have several other cases where I need binding programmatically to xml, so I need to get this script working. Thanks in advance for any help!


    The simplest way around this is to link the labelField and dataProvider to a variable or a get/set accessor, and then set the variables (or the Set accessor) in the result handler.

    What is happening is that the combo box has not been instantiated in the place in which you try to set the values, so the null pointer.

  • What would cause the mouse to scroll slowly on Web pages, but normally on text documents?

    I have a strange problem. I have a Logitech M305 mouse on another machine which is too slow scrolling on Web pages. I ordered a new mouse, but today I noticed the old mouse normally scroll in text documents, even though the text document is displayed in Firefox (such as the "subject: config" page).

    Normally, a page will scroll 3 lines for each click of the mouse wheel.
    On Web pages, it changes and it takes 3 clicks of the mouse wheel to get the page to scroll.

    It is troubling to move the mouse wheel and don't have anything happen until the third click.

    So the question is, what would make the mouse wheel behave differently on the Web pages and pages of text, and how can I solve this problem?

    BTW, this is a clean install of Windows 7 64-bit. I use the same exact type of install now on another machine with a mouse Logitech M510 and normally scrolls on all pages.

    OK, a final report on this issue. Yesterday, before installing the new mouse M325, I decided to uninstall the Logitech SetPoint software. I wanted a new installation of the software for the mouse to go with the new mouse.

    To my surprise, after the set point has been uninstalled the old mouse M305 scroll normally on pages of text and Web pages. It seems that something mysterious happened in the relationship between Firefox and the original installation of set point. Firefox made some adjustments or updates of its own regarding record just as it does for modules, I saw it happen a couple of times before. /shrug

    New mouse + set works perfectly with FireFox now and the old mouse M305 + setpoint is now works well with an old laptop XP Pro, at least as long as the button pop-up gimpy holds.

    Solution, in this case: uninstall the Logitech SetPoint mouse software, and then reinstall a new copy of it.

  • How can I get rid of the tiny scroll bar that appears from time to time at my pointer? It causes the page to scroll when I don't want it.

    no more details

    Hello Jentet,

    In addition to what Kerry_Brown said, if you want to keep the functionality, you probably pushed to the bottom of your mouse wheel. When this happenes, simply click the wheel on your mouse again and it will disappear.

    Hope this helps Chris.H
    Microsoft Answers Support Engineer
    Visit our Microsoft answers feedback Forum and let us know what you think.

  • Bug? Right-click on the marquee in front causes!

    Posted on LAVA: This message contains an update of the problem description.

    Whenever I do a right-click on a control in the FP and dismiss the context menu, I get a selection rectangle. If I catch him, moving outside the limits of the FP will cause the FP to scroll to continue my Junk 'selection'. This has been so far repeatable every time.

    I noticed that the problem is not happening on the controls palette, only the context menu for controls. Also, if I right-click the context menu before dismissing, the problem will not occur. If I select an item from the context menu (which also rejects), the problem does not occur.

    I'm under LabVIEW 8.6.1f1 on Windows XP Home SP3.


    On my main machine, I have been unable to recreate this behavior that got us wondering.  Then it happened to me, I modified the file ini on this computer.  In particular, one of the things that bothers me is trend of the LV to clicks in the windows in the background under tension.  Normally I click to activate, and then click Next.  For some time I have (and more often other users) would not always look where this first click went.  To disable it, I went to the LabVIEW.ini file and added the following key:

    dropThroughClicks = FALSE

    This stops the live by clicking on and seems to significantly reduce the appearance of this bug.  Your mileage may vary, but I still have to get the selection when this key is set.

  • Drop-down lists lists loop until the first position when scrolling down

    Original title : Drop-down lists keep scrolling to the first position

    As soon as there is a drop involved or any time there is more than a list of what can be seen on the screen, something is causing the list to scroll to the first position.  It also happens on anything that uses a mouse to move a bar on the side, using keyboard does not help, she returned at the beginning.  Please, someone let me know how to solve this problem, I can't get anything done as much of what I do has lists in drop-down lists.

    Thanks for your help



    1. the problem occurs with any particular application or all applications?
    2. don't you make changes to the computer before the show?
    3. what operating system is installed on the computer?

    I suggest you perform the clean boot and check if the problem persists.

    How to troubleshoot a problem by performing a clean boot in Windows Vista or in Windows 7
    Note: Follow step 7 clean boot KB929135 article to reset the computer in normal mode.

    Additional information:
    The problems with the mouse button or scroll the parameters

  • Interesting question of scrolling

    Hi everyone, I have a problem with scrolling in my area

    The page layout, I currently have is:

            vfm1 = new VerticalFieldManager(USE_ALL_WIDTH | VERTICAL_SCROLL | VERTICAL_SCROLLBAR);

    and I add a created custom field to vfm1.

    However, every time I scroll the focus passes power to another, but the screen does not scroll down UNTIL the last field wins the update. Once the last field acquired focus, scrolling further causes the screen to scroll down.

    I tried to add simple labelfields at the vfm1 and it scrolls perfectly but created custom fields are causing the problem.

    Can anyone think of what may cause this effect?

    In the custom field is created, I replace the onFocus() and the onUnfocus() but I do not see why this would have caused this problem.

    I found the problematic code.

    So the custom field I have added is horizontalFieldManager and inside, I bitmapfield

    Now, in the horizontalFieldManager I crushed focus... that makes no sense since fieldmanagers don't really get the focus (as in the past, I read in this forum).

    At the same time, I was the substitution of development for the bitmapfield as well.

    Question/bizarre and illogical behavior...

  • Scroll/overflow for QML Pages?

    Someone ask about the nature of each component QML.

    I assumed that the stacking of components (ImageView, label, text box, etc) with a direction from top to bottom will cause finally the page scroll vertically.

    However, in my case, I created a page with a Page element, and then the container, then ImageView with an image that takes about half of the screen. I then added TextArea component with several paragraphs of text. But it seemed to crush my image vertically is not proportional and distorted. I think he did this to fit everything on the screen as now the TextArea cut just before my bar tabs at the bottom.

    But shouldn't the TextArea component extend far the text ends, and the entire page should scroll to the user? By coincidence, my goal is to keep the TextArea how it is and scroll independently with a smaller space occupied. But the fact is, I don't know why the image at the top was crushed to do this. I solved the problem with setting image resizing, but shouldn't have an overflow and allow default scrolling upright?

    Sorry if this is an obvious answer, but I'm still getting used to the Cascades. Thank you.

    Actually I don't expect a Page to scroll unless I told you to scroll. Just different ways of seeing things, I guess.

    There is a distinct element of ScrollView, so you could add to the page and insert your content in the ScrollView. Maybe you could try that?

  • 5.0 inertial scrolling problem

    Hi, I'm trying to understand why this bug seems to occur in one of my programs on a Storm 2. First of all, some simplified code to reproduce the problem.

    public class MyScreen extends FullScreen {
        public MyScreen() {
            this(new VerticalFieldManager(VERTICAL_SCROLL | VERTICAL_SCROLLBAR));
        protected MyScreen(VerticalFieldManager manager) {
            super(manager, 0);
            add(new RichTextField("First item"));
            add(new RichTextField("item 2"));
            add(new RichTextField("item 3"));
            add(new RichTextField("item 4"));
            add(new RichTextField("item 5"));
            add(new RichTextField("item 6"));
            add(new RichTextField("item 7"));
            add(new RichTextField("item 8"));
            add(new RichTextField("item 9"));
            add(new RichTextField("item 10"));
            add(new RichTextField("item 11"));
            add(new RichTextField("item 12"));
            add(new RichTextField("item 13"));
            add(new RichTextField("item 14"));
            add(new RichTextField("item 15"));
            add(new RichTextField("item 16"));
            add(new RichTextField("item 17"));
            add(new RichTextField("item 18"));
            add(new RichTextField("item 19"));
            add(new RichTextField("last item"));
        protected void paintBackground(Graphics g) {
            g.drawBitmap(0, 0, 480, 360, Bitmap.getBitmapResource("backgroundImage.png"), 0, 0);

    The new inertia scrolling seems to be the cause of my background scroll when I intend to let him remain in place. It ends by leaving pieces of the background in the places, that is not because I think that the VerticalFieldManager pulls effectively only the parts that need to be redrawn. I also tried to paint the background in painting, then by calling paintChild (g, manager), but it has the same problem.

    Is it possible to set up the Manager so that he knows is not to reach the bottom as well?

    Thank you


    I think I have a similar problem. In one of my screens I use some RichtTextFields at the top of the screen and the rest of the screen if taken by a BrowserField. If the BrowserField is longer than the screen as the top is sometimes distorted. The solution that works for me is to add a ScollListener in the constructor of the screen that invalidates the screen when the user makes a scrolling:

    getMainManager().setScrollListener(new ScrollChangeListener() {  public void scrollChanged(Manager manager, int i, int j) {    invalidate();  }});

    Maybe it works for you as well?

  • Scrolling effect unknown, please help.

    On the 'Contact' page, I have a scrolling action which makes the page move to the left as it moves upward.  I need help, see what is causing the movement to the left so I can remove it.  Scrolling is started by clicking on the icon 'To REQUEST YOUR FREE CONSULTATION' at the top right of the page.  This same icon is built in the master page and go to the anchor on the 'Contact' page, which it performs correctly on all other pages.  For some reason, on the 'Contact' page it causes a movement of scrolling to the left as the page scrolls to the anchor to the bottom of the page.

    Here is the link for the Contact page:

    Thank you for your help.


    Hi Jack

    I think that you have solved the problem that I don't see the page to the left with the scrolling movement.

    Thank you


  • Problem with the Login user and scroll form

    Hi all, I have a problem with the form for the user to login to my page.

    There is a connection user transaction and the cursor automatically appears in the tefxfield of connection, which causes the page to scroll automatically, so the banner is completely displayed.

    I tried with the blur() and javascript function, but it simply doesn't. Anyone know a solution to this problem?

    Just came across the following in the file 'includes/tng/scripts/FormValidation.js ': code snippet

    if (typeof KT_FVO['kt_login_user']!='undefined') {
                   var user_name_ctrl = document.getElementById("kt_login_user");
                   if (user_name_ctrl) {

    If I understand correctly, here´s where ADDT´s "kt_login_user" of field entry will focus on loading the page, so I think basic is enough to disable the line...

    user_name_ctrl. Focus();

    .. .to add a first comment in javascript:

    user_name_ctrl. Focus();

    See you soon,.


  • Madness of scrolling DataGrid

    Hi all.

    I'm trying to get a container to scroll when a datagrid is scrolled.

    Y at - it an easy way to do it.

    I am aware of the v and h scrollposition properties, but the difference how the datagrid scroll causes the two sync scrolling elements.

    Any help is greatly appreciatted

    Hi, you can do this as a percentage. Here is an example (right click to view source):
    Hope you find it useful.

Maybe you are looking for

  • want to download latest osx

    A website I use tells me safari is outdated and blocked m.  I was told to download Chrome, but I think that on my Mac OSX is not compatible.  How can I get the latest version and will it help if I install it

  • iPhone 6s more not to alert when it is locked and off

    When it is locked and off, my iPhone will not alert sound.  It will be if I unlock and screen is on, but will not otherwise.  Calls went through with the sound, but not with the texts.  I have made sure that the do not disturb settings are turned off

  • where can I get 10.9 and 10.10 for my mac so my last is 10.8.

    I jumped OS X 10.9 and 10.10 on my system at home that I need a stable system during this release cycle and had no time to fix potential problems. If it's not broken, don't fix it! 10.11 wreaks havoc on my system to work and I had to go back to 10.7.

  • Satellite L300 - error 0x800423F3 system restore

    System Restore stopped working 'transient' error 0x800423F3 on my Satellite L300 series, now lost the function of brightness FN key? Solar protection

  • Issue of Windows Com Port 7.

    When my USB Ports are allocated for the devices in my device, they end allocated to a range higher than my devices are supported. Is it possible to reassign my com ports to a lower range.