Use the handler programmatically

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• Not able to use the Handle returned by open with LockFileEx

  Hello

  I try to use the file returned by open handle to lock the file using the Windows SDK LockFileEx function. It gives me an error like invalid handler. PL suggest me the solution.

  Kind regards

  You use a SDK function to open the file? The ANSI fopen() function handle or CVI OpenFile() functions won't work - you need to handle SDK function.

  JR

• After Effects object moves using the handles on the curve of an animation...

  Hello

  I'm doing this project effects after where I have an object animating an image key to another key image. I set the handles for this curve of the animation. Once I had which I've been the object to remain still after he curved in its position, before the next keyframe returns to restart. But in this situation when I want to rest again he drifts on the side and then back to its original position.

  My keyframes are fine. I took a screenshot and circled what, in my view, the problem is (white circle). Please help me understand how to get my curve of animation always without going through this strange drift.

  Thank you!

  

  I just thought of it... I had to click with the right button on my keys to position images and click on "toggle hold keyframe.

• Incorrect behavior when using the sliders on a signal enlarged

  I started recently by using sliders to determine specific values in a recorded signal.

  Problem is when I use the Zoom tool (the magnifying glass under the time scale icon inside) to zoom in on a specific peak dysfunction of sliders. When you take a slider handle and drag the intersection of cursor is no longer follows the track of the signal in the graph.

  To recreate:

  • Log data with Signal Express seconds. I always pass the signal by the amplitude and levels step to display the signal as a graphic of the scope.
  
  
  • Right-click on the graph and select visible items > sliders to add the sliders to the chart
  
  
  • Use the handles to slide to move the cursor cross along the signal.
  
  
  • Click the magnifying glass in the time scale, and then select the Zoom (top left of the box that is displayed)
  
  
  • Click and drag on the chart to zoom in on a signal peak.
  
  
  • Now use the grab handle sliders intersect on the zoomed pic in.
  
  
  • Cursors follow the path of the signal.

  I'm pretty confident that it's recreateable, because the same behavior exists on both machines in the lab as well as the software in beta 2011 at my office.

  Rory,

  Thank you for your patience during the attempt to isolate this problem. I'm glad that you could see up to a kind of stange behavior.

  You describe exactly what I see on my end. If you zoom in far enough the sliders 'think' it follows the signal when in fact it's a ghost left by an already enlarged resolution signal.

  The solution is to change the graphic for graphic band momentarily while I use the sliders, and then back again to view the actual data.

  This isn't really a drawback, but I'm happy that we can document as a bug.

  Thank you!

• Good way to use the concurrent data store

  Hello

  I'm developing a multithreaded C++ application that uses the C++ of Berkeley DB Library.

  In my case, I have several databases that I composed in a wooded area. It is important for me to use an environment because I need control over the cachesize parameter.

  I don't need no guarantee of transaction and have for most of the readings, so I decided to use the "simultaneous database.

  I first pre-fill all databases with a number of entries (configuration single-threaded phase) and then work on it at the same time (for most readings, but also insertions and deletions).

  I tried all kinds of different configurations, but I can't work without specifying DB_THREAD as a flag of the environment.

  I don't want to because then access all handles is synchronized sequentially according to the documentation:

  "... Note that the activation of this indicator will serialize calls to DB using the handle between the threads. If

  simultaneous scaling is important for your application, we recommend handles separate for each thread opening

  (and do not specify this indicator), rather than share handles between threads. "

  (Berkeley DB QAnywhere C++)

  So I tried to open the environment with the following indicators:

  DB_CREATE | DB_PRIVATE | DB_INIT_MPOOL | DB_INIT_CDB

  All data in this environment handles are open only with the DB_CREATE flag.

  So, since my understanding this same basic access handles need to be synchronized, I opened separate handles foreach database for each thread (opening the handles is still single-threaded).

  In my first approach, I have only made use of the object of global environment. Which does not work and gives the following during operations error message:

  DB_LOCK-> lock_put: Lock is no longer valid

  So I thought, since the same handle global env is passed to all handles separate DB, it is perhaps a race condition critical on the handful of approx.

  So in my next test, I opened also handles separate EPS in each thread (and db handles owned each).

  That does not produce an error in db, but now it seems that each thread sees its own version of the databases (I call it stat early in the life of each thread and he sees all of the empty dbs).

  What is the right way to use the concurrent data store? Each thread should really open his own set of db handles? What about the number of open handles env?

  PS: Without specifying that the DB_PRIVATE flag seems to do the job, but for performance reasons, I want all operations to perform in the cache and do not specify product DB_PRIVATE average of several writes to the disk for my scenario.

  Thanks a lot for your help.

  CD (simultaneous database) allows a single editor with multiple drives, access to the db at a given point in time.    The handle for the writer doesn't have to be shared with readers.   If you share the DB handle then calls are synchronized, but if each thread has its own handle DB then this is not the case.     Since you have an environment, DB_THREAD must be at the level of the environment.   This will allow the sharing of the environment handle.     This type of error "DB_LOCK-> lock_put: Lock is no longer valid" you can provide us your code so we can take a look.   Also what BDB version are you using?

• Is there a c# example to use the event handler ExpressionEdit Custom Button control

  TestStand 4.1

  VISUAL C# 2008

  I've added the event handler for ExpressionEdit events as I would any event handler:

  exprEdit.ButtonClick += new NationalInstruments.TestStand.Interop.UI.Ax._ExpressionEditEvents_ButtonClickEventHandler (_ExpressionEditEvents_ButtonClickEvent);

  Then, I create the event handler using the syntax

  public void _ExpressionEditEvents_ButtonClickEvent(NationalInstruments.TestStand.Interop.UI.ExpressionEditButton btn)

  {

  }

  I get the following error when I compile Isaiah:

  Error 1 no overload for delegate matches '_ExpressionEditEvents_ButtonClickEvent' 'NationalInstruments.TestStand.Interop.UI.Ax._ExpressionEditEvents_ButtonClickEventHandler '.

  I guess that means that I don't have the right parameters or types in my statement of event handler, but it corresponds to the object browser.  Any ideas on what I'm missing?

  See my last edition but I think you want your handler to look like this:

  Public Sub exprEdit_ButtonClick (ByVal sender,
  NationalInstruments.TestStand.Interop.UI.Ax._ExpressionEditEvents_ButtonClickEvent
  (e)

• Problem get the handle to the module using CodeModuleGroup

  I need to get the object moduleHandle of some modules that I don't know the name of the runtime so I use CodeModuleGroupManager.loadAll () then a loop in the list of the modules that it returns.
  From there I need to obtain the handles of some modules based on information module, but it does not work.
  By using the following code I get 0 or a number that appears to be no valid for a moduleHandle object.
  I use this api incorrectly? I tried to get the handle based on the name and friendlyName properties. This maybe isn't the way to do it, but I couldn't figure a way deparaments.
  Thus, using the information returned by the loadAll() method, I would like to know the right way to get the Handle to the module.
  Any help is appreciated. Thank you.

  modules = CodeModuleGroupManager.loadAll ();

  for (i = 0; i numModules; i ++) {}

  String fname = modules [i] .getFriendlyName ();
  String name = modules [i] .getName ();

  / * 3 following below almost always return 0. Why? */
  moduleHandle int = CodeModuleManager.getModuleHandle (fname);
  moduleHandle = CodeModuleManager.getModuleHandle (name);
  handle = int [i] modules .getHandle ();
  }

  CodeModuleGroupManager.loadAll returns a returns an array of CodeModuleGroups, not CodeModules.  You try to use the name of a CodeModuleGroup to get the handle of a CodeModule.

  If you want the CodeModule handle, call first getModules() on your variable modules and the loop through this enumeration.  If you want that the handle of the CodeModuleGroup call getHandle on your variable modules.

• Select the images to use as handles of transition?

  Hi, I am doing a demo showing a rotation of the 3D model. I have a clip of a model of texturless making a full rotation of 360 and another clip of the Rotary model textured. I want the first clip to transition to another with a wipe, but I don't have enough long clips, so the first repeat executives and first and last clips respectively to the handles, which does not have a smooth transition.

  But as each clip is 100% looping, is there a way I can use the frames of some first in the first element as the material of the tail and vice versa for the second clip? Thanks in advance for the help.

  If there is that no first handle repeated frames.

  The only way to get them to the smooth transition must take off a few frames from the end of the first clip and some pictures on the front of the second clip.

• How can I get the 'handles' using the Radial filter in Lightroom 6

  How can I get the 'handles' using the Radial filter in Lightroom 6

  Please press 'H' as advised by dj_paige.

• using the 'anchors' or 'handles' perspective adjustments

  I'm not sure I have this right, but somehow, I remember seeing somewhere on the use of handles/tabs/lock points so you can freeze a part of an image while you make adjustments to the view/lenses to the rest of the image.

  For example, it would be a sort of 'freeze' the quarter left of an image while you make a correction from the perspective on the right three-fourths of the image. I don't know where this feature/tool (if it exist?): perhaps in the correction of lens or characteristic transformation filter or...?

  I'm using cs5. If it does not exist, and if you know of any tutorials or videos, that would be great. David

  I think I may have answered my own question: under transform, the Warp tool overlays a grid on the image and let's "distort you" sections, I think that give you much control over how the adjustments affect the image.

• How to use the object Handle for Image cropping and rotation

  I downloaded the handle of the rogue 2,008 object that I need to know how to use it for cropp and rotate the Image.

  Contact the vendor of this product for more information on its use.

• Check out the current programmatically tab when you use the tab control

  Hi, I'm kinda a n00b.

  I have 10 tables of data and I want to draw these 10 berries on 10 separate charts.  I don't want to clutter my screen so I made a tab control, with a tab for the path of each data table.  But I don't want to trace all at the same time, I want that each parcel having its own button "trace data" so that the user can customize the trace for each of these options.

  I could do with 10 pieces of code with 10 different buttons, but as I said I hate the mess, so I prefer to put all this into a business structure by which according to any tab the user has selected, when they press one 'plot data', labview gets data appropriate and plots as a result.

  Now, I know that the tabs are indexed and I can return at any time to any page given by using the property Node--> Pages, but I need a way to retrieve the index of the currently selected page.  Once I have that, I know how to do the rest.

  Is this possible?

  Thank you

  Jessie

  It is exactly what it seems that there is a terminal on the schema that represents the tab. On the front panel, right click and select 'Find the Terminal'.

  Here's the code 8.0.

• event handler programmatically for different loop than the event itself

  Hello

  I'm driving a car of mine using compactDAQ in labview. I have two parallel looping using queues. One is for the tips - READ LOOP playback engine - (running more often), and the other for writing to the engine in bits - LOOP to WRITE.

  When I shoot a little some (by CAR), the motor starts to move with a pre-defined pace and to a predefined position. So far so good. Thus, when the engine starts, it replaces two bits:

  -sets bit BUSY (indicating the movement)

  -Disable INP bit, which indicates that the motor is not in a position

  As soon as the engine reaches its final destination the BUSY bit is cleared and the bit of the INP is set.

  The question is: How can I sign up for the BUSY bit (INP or both) goes high (or low) in LOOP WRITE, given that the bit is read LOOP read? Is it possible to do using queues? I read something about the events, but I don't know exactly how incorporating them in line-ups. Is this OK same design for the engine management?

  I have attached some of my code, where I have a structure of the event, where a condition is the change of the busy flag that is updated in LOOP READ. However the structure of the event will never run.

  I would like my RTO case run once and then expects busy go upstairs, and then again for INP to go UP and after that the next case is running (stop or other).

  I know that my code is not perfect, but I'm pretty new to labview...

  Thanks for any information that can help

  User events are just another way to communicate between the 2 loops.  Queues are also used to communicate between two loops.  If you already have a queue from one loop at the other, you could just keep using that.  I have recommended the user events due to the structure of the event you have included in your loop of producer.  User events can be triggered at any time you want.  You can have the code in your block diagram that uses the Event.vi user generate causes the structure of the event with the other loop turns off.  Event structures are usually turns off when a Panel before its value control has changed, but they can also be configured for these user events.

  You can really make this communication between your two loops in different ways.  If you use a LabVIEW 2012 I strongly recommended to take a look at the producer/consumer model, which is available for you to look at this common architecture and compare it to what you have now.  If you have not 2012 try to look at the example in my last post on the producer/consumer with user events.  You will find more success using architectures such as these.

• Can you attribute programmatically size when you use the table in the Cluster service cluster

  I use the table of the Cluster service.  The only way I know to the size of the cluster is to right click on the function and set the Cluster size.  But what happens if the length of my table changes?  Is there a way to make the cluster size is the number of elements in the table?  Seems like labview should do this automatically at run time.  There may be some nodes of property I don't know.

  I tried the SQL statements, but it always boils down to having to know the number of columns is in the database prior to execution.

  What I did to generate the object to be a cluster to match database fields.  My recordset is an array of objects.  Then I a vi member to build a recordset from the database and another Member vi to retrieve an array of clusters of the recordset object.  If the database changes, I have to change the subject and these two vi.  All the other Subvi call these two for the manipulation of data.  No other sub - VI have bundle and ungroup functions in them, only the vi of two members.  Thus a change in the database requires a change of control and two vi.  Not too bad.

  (I'm tooting my Horn in choosing me as accetped solution provider.  I learned this bad habit of others here on the forum.  )

• Photosmart C5180 using Windows 8. Error message = Z:\is is not accessible - the handle is invalid

  I just bought a new computer with Windows 8.  I loaded the software for my Photosmart C5180 all-in-one printer.  It seems to print fine but when Itry to read a memory card I get an error message: -.

  Z:\is is not accessible - the handle is invalid

  Hello numuc95.

  I guess that the printer is installed network? Have you tried to install the printer with a USB cable? This seems to work best for access to the card reader.

  If you can not install with USB, look at this link to see if it helps:

  http://support.HP.com/us-en/document/c00149194

  I hope this helps.