Is screen capture image making possible?

We need to do a screen capture and store the image. Is that possible to do?
In regular Java, screen capture is possible with the com.sun.image.codec.jpeg.JPEGImageEncoder, java.io.File and java.io.FileOutputStream.
These are not available in J2ME. Would screen capture still be possible, and if so, how could it be implemented?

Likely the only way to do that is by accessing directly the WinAPI. However doing efficient screen capture through WinAPI is not as easy as calling a single Windows API function. It is quite a bit more involved and the code needs to be able to handle various bit depths in order to work in various screen resolution setting.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Similar Messages

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    You mention capturing a video screen. I might ask if it's resulting in a blank area where you should see the video? If so, in SnagIt, you likely need to enable capturing a "layered" window.
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    Helpful and Handy Links
    Captivate Wish Form/Bug Reporting Form
    Adobe Certified Captivate Training
    SorcerStone Blog
    Captivate eBooks

  • Screen capture image format

    hi there,
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  • Since Firefox 6.0 copying images, by either Win 7 fxn or by screen capture fxn's, no longer works

    -- At least, this is the way it seems... a letter I wrote first to the VMN Toobox staff (and to Firefox)...
    Hi VMN Staff/Inventor – and Hi to my favorite browser’s staff at Firefox,
    I must say that I really love your Screen Capture fxn for the VMN Toobox 4.25! I use it ALL of the time! Hopefully, I have sent you some money already. Tonight however something is really wrong! When I fired up the computer this afternoon and, as usual, was doing research for my office, some webpage logos wouldn't copy, so as usual I dropped down the VMN Toolbox selections, selected Screen Capture and arranged the capture bars over the image, got the yellow flash-across the selected area and pasted the picture in to the document. I looked and looked, reshot the image several times but unbelievably … THE SCREEN CAPTURE IMAGE on the document WAS BLANK!
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    I had not used Awesome Screenshot for quite a while, but there it was up on my toolbar - tried that - same damn thing! What's going on? I am pretty certain I let Mozilla FireFox go ahead and update from v5.x to v6.0 as soon as I signed on, and several add-ons were suddenly "no longer compatible," but as far as I can tell your software doesn't rely on any plug-ins. The Awesome Screenshot extension add-on for Firefox was still enabled, yet it did not work.
    Further troubleshooting - as I was at my desktop on the network in the office, I then fired up my laptop. This time I DID NOT allow Mozilla Firefox to update from v5.x to 6.0. The VMN toolbox screenshot worked fine! Uh, oh Firefox…?
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    Lastly, maybe you know something about this - is there any way to actually "see" the clipboard - what's on it at any given time? I cannot find any way to access either file names or images existing on the clipboard no matter how much is on it, or what program I'm using. (An IT level/web developer person I am not, just a physician.)
    I have Windows 7 Professional on my desktop, 4GB RAM, the network/server can only use a 32-bit system type, and everything is highly maintenanced by myself and our IT team, so absolutely everything else is fine. On my laptop I have a Windows 7 Home Premium OS installed and working fine on a brand new HP Pavilion g4 Notebook PC w/ 4GB RAM, 64-bit system type.
    Any time to send me any ideas? Thanks. And you too, Firefox - what's going on?
    Thank you very much,
    Robert Schmidt, D.O.
    Woodlands Healing Research Center 5724 Clymer Rd. Quakertown, PA 18951 [email protected] and [email protected] ph: 215-536-1890 fx: 215-529-9034 cell: 267-221-1818

    -- At least, this is the way it seems... a letter I wrote first to the VMN Toobox staff (and to Firefox)...
    Hi VMN Staff/Inventor – and Hi to my favorite browser’s staff at Firefox,
    I must say that I really love your Screen Capture fxn for the VMN Toobox 4.25! I use it ALL of the time! Hopefully, I have sent you some money already. Tonight however something is really wrong! When I fired up the computer this afternoon and, as usual, was doing research for my office, some webpage logos wouldn't copy, so as usual I dropped down the VMN Toolbox selections, selected Screen Capture and arranged the capture bars over the image, got the yellow flash-across the selected area and pasted the picture in to the document. I looked and looked, reshot the image several times but unbelievably … THE SCREEN CAPTURE IMAGE on the document WAS BLANK!
    This NEVER occurred before. And, even after restarting the computer it still did not work.
    Then I happened to be in a document where VMN screen capture images had been added - they were ALL blank! Checking other documents - all screenshot images in all documents are blank, totally whited out, with the black lines of where the images used to be right there, emphasizing that something is gone. Like a painting stolen from a museum wall and the photon shadow is all that remains.
    I had not used Awesome Screenshot for quite a while, but there it was up on my toolbar - tried that - same damn thing! What's going on? I am pretty certain I let Mozilla FireFox go ahead and update from v5.x to v6.0 as soon as I signed on, and several add-ons were suddenly "no longer compatible," but as far as I can tell your software doesn't rely on any plug-ins. The Awesome Screenshot extension add-on for Firefox was still enabled, yet it did not work.
    Further troubleshooting - as I was at my desktop on the network in the office, I then fired up my laptop. This time I DID NOT allow Mozilla Firefox to update from v5.x to 6.0. The VMN toolbox screenshot worked fine! Uh, oh Firefox…?
    So, I will be sending this message to Firefox also - I detest Microsoft, only use their software at all only because I HAVE to, I almost never use IE v8.x or 9.x or wherever it is now - but can your people at VMN (and y'all at Firefox) explain how the only browser I use, Firefox, could possibly reach in to my documents file and cause the screenshots downloaded to the clipboard, then to documents, to suddenly no longer be able to be seen? Is this even possible?
    Lastly, maybe you know something about this - is there any way to actually "see" the clipboard - what's on it at any given time? I cannot find any way to access either file names or images existing on the clipboard no matter how much is on it, or what program I'm using. (An IT level/web developer person I am not, just a physician.)
    I have Windows 7 Professional on my desktop, 4GB RAM, the network/server can only use a 32-bit system type, and everything is highly maintenanced by myself and our IT team, so absolutely everything else is fine. On my laptop I have a Windows 7 Home Premium OS installed and working fine on a brand new HP Pavilion g4 Notebook PC w/ 4GB RAM, 64-bit system type.
    Any time to send me any ideas? Thanks. And you too, Firefox - what's going on?
    Thank you very much,
    Robert Schmidt, D.O.
    Woodlands Healing Research Center 5724 Clymer Rd. Quakertown, PA 18951 [email protected] and [email protected] ph: 215-536-1890 fx: 215-529-9034 cell: 267-221-1818

  • RoboHelp screen captures

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  • Website with Full Screen Background Images

    I'm trying to create a website with full screen background images (or  possibly, a video) that will crop to the browser window. It's also  important that the image be center-justified. The Die Antwoord site does  pretty much what I'm trying to accomplish. I'd also like to know how  they can use such high resolution images. If I try to use a high res  image, the file size is enormous. Another site that uses similar  technology only with a video is the TV on the Radio site.
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  • Screen Captures Exposed

    This thread attempts to tackle the issue of screen captures in FrameMaker.
    Please post questions about screen captures to the FrameMaker forum outside the FAQ thread using Add Topic. http://www.adobeforums.com/cgi-bin/webx?14@@.ee6b312
    Please, post corrections and suggestions to the FAQ Corrections and Suggestions thread:
    DorothyK "FAQ Suggestions and Corrections" 5/9/01 7:12am.
    Screen captures are a basic part of technical writing and even non-technical writers, who use FrameMaker to write about software, will more than likely end up using screen captures.
    This thread attempts to clarify issues about screen captures. This thread concerns itself primarily with screen captures of software, not the screen capture of things like photographs.
    Please post questions about screen captures to the FrameMaker forum outside the FAQ thread!http://www.adobeforums.com/cgi-bin/webx?14@@.ee6b312

    <b>Dov Isaacs on Screen Captures</b><br /><br />Dov Isaacs had this to write about screen captures:<br /><br />***************<br /><br />Date: Wed, 23 May 2001 10:23:22 -0700<br />From: "Dov Isaacs" <[email protected]><br />Subject: Imported / Placed Images - MORE (You Asked for It!)<br /><br />All:<br /><br />Some additional issues were raised yesterday both on-list and in some private emails to me about me postings with regards to screen capture images specifically and images in general.<br /><br />Issue #1 - UNIX<br />===============<br /><br />UNIX is not my specialty and Adobe no longer provides a version of Photoshop for any flavour of UNIX. Thus, my advice for UNIX users of FrameMaker are effectively to capture the raw image as TIFF, process the image on Windows or Macintosh to obtain the EPS file with the image interpolation option, and then move the resultant EPS file back to your UNIX-based system for use with FrameMaker.<br /><br />Issue #2 - File Size - Screen Captures<br />======================================<br /><br />There is no question that the binary EPS files that result from the procedures I outlined yesterday are somewhat bloated compared to other files holding the same content. The resultant PDF files at the end of the process, though, are exceptionally compact.<br /><br />To show what is going on, I captured an image showing one of the PSCRIPT driver dialog windows. I saved the resultant RGB image in a number of different formats. The following are the files, sizes, and explanations:<br /><br />Printer Properties.bmp - 899 KBytes<br /><br />        RGB and K only, no CMYK option, no compression option,<br />        no display/print-time interpolation,<br />        limited cross-platform interoperability,<br />        application/driver resampling problems<br /><br />Printer Properties.gif - 20 KBytes<br /><br />        RGB only, no CMYK option, 24 bit color reduced to 8 bit color,<br />        no display/print-time interpolation,<br />        application/driver resampling problems<br /><br />Printer Properties.tif - 61 KBytes<br /><br />        no display/print-time interpolation,<br />        application/driver resampling problems<br /><br />Printer Properties Direct ASCII.eps - 2735 KBytes<br /><br />        no compression, enormous size (includes TIFF preview)<br /><br />Printer Properties Direct Binary.eps - 1462 KBytes<br /><br />        no compression, large size (includes TIFF preview)<br />        care must be taken in setting Windows PostScript printer driver<br />        to correct binary option (most often TBCP if not AppleTalk printer)<br /><br />Clearly, you are indeed paying an on-host penalty in file size by using<br />the EPS approach that I outlined. The resultant PDF generated from this<br />content most often is SMALLER than the PDF generated from TIFF equivalents<br />and has higher quality, but you will pay in terms file size of the on-host<br />"content" files with the images.<br /><br />(You may ask "why are the EPS files from Photoshop so bloated?" The answer<br />is two-fold. Part of the problem comes from the fact that Photoshop does<br />not have a compression option for non-JPEG EPS export, although it has a<br />ZIP compression option for non-JPEG PDF export. The other part of the problem is the TIFF preview header, which surprising enough, takes at least as much space as the "base" uncompressed image in PostScript. Yucck!)<br /><br />But alas, I did find a way of fixing this problem enough to be quite a<br />bit more tolerable. (If local disk space is not a problem, then you need<br />not worry about trying this stuff out!)<br /><br />Instead of saving the image as EPS with the interpolation option in either<br />Photoshop 6 or Photoshop Elements 1, save the image as Photoshop PDF with<br />the interpolation option and ZIP compression (not JPEG!!) using either<br />one of those programs. THEN, in Acrobat 5, save the PDF file as binary EPS, <br />TIFF header, language level 3. (In Acrobat 4.05a, export the PDF file <br />similarly!)<br /><br />Resultant files (both ASCII and binary flavours):<br /><br />Printer Properties.pdf - 23 KBytes<br /><br />        Most compact format for this image type<br />        Not appropriate for FrameMaker import/placement.<br /><br />Printer Properties from Acro5 ASCII.eps - 400 KBytes<br /><br />        Slightly larger than binary equivalent,<br />                much larger in the general case, though<br />        (includes TIFF preview)<br /><br />Printer Properties from Acro5 Binary.eps - 396 KBytes<br /><br />        Slightly smaller than ASCII equivalent,<br />                much smaller in the general case, though<br />        (includes TIFF preview)<br />        care must be taken in setting Windows PostScript printer driver<br />        to correct binary option (most often TBCP if not AppleTalk printer)<br /><br />With the replacement step of generating PDF instead of EPS and then the extra steps of running Acrobat and saving/exporting PDF, you save over two thirds of the disk space for the EPS files.<br /><br />There is no quality loss in this process. The savings in disk space is<br />due to the fact that unlike non-JPEG EPS export from Photoshop/Photoshop<br />Elements, PDF export from the same program can ZIP compress images as<br />well. Screen captures do exceptionally well with non-lossy ZIP compression.<br />The EPS save/export from Acrobat maintains the images' ZIP<br />compression. The remaining "bloat" in these Acrobat-generated EPS files is the<br />result of Acrobat's PostScript procedures in the EPS file as well as the TIFF header.<br /><br />Bottom line is that I think the extra steps are worth it if you want to<br />conserve disk space. If you want to re-edit THESE EPS files in Photoshop,<br />unlike the EPS files directly saved from Photoshop, extreme care must<br />be taken in opening them to avoid weird resampling.<br /><br />Issue #3 - Non-Screen Capture Images<br />====================================<br /><br />I would still recommend EPS as a better means of importing/placing images<br />into FrameMaker such that resampling does not occur in the application or driver.<br /><br />Likewise, I would not recommend ever resampling any such images to a higher resolution. Turn on the image interpolation option and let either<br />Acrobat or the ultimate PostScript printing device do the hard lifting<br />for you. You gain nothing by carrying around the extra data which really<br />contains no real new data.<br /><br />This is most likely contrary to what your service bureaus and printers<br />will tell you as gospel and what their pre-flight software will advise you to "correct," but resampling here buys nothing at all. (If they still don't believe you, have them contact me!)<br /><br />I have revised the recommendations from yesterday based on the above ...<br /><br />        - Dov<br /><br />========================================================================<br /><br />Based on our experience at Adobe, there is one way that easily yields the highest quality computer screen shots for both display and printing.<br /><br />(1) Grab the image with whatever your favorite tool is. Under Windows, the easiest thing to do is Alt-PrintScrn which puts the RGB bits onto the pasteboard. On the Mac, Shift-Command-4 followed by CapsLock yields an image file.<br /><br />(2a) Under Windows with Photoshop 6, create a new document. It will automatically be the size of the image on the pasteboard. CTRL-V will then paste the screen capture into that new image. Then, flatten that image.<br /><br />(2b) Under MacOS with Photoshop 6, open the generated image file (a PICT <br />file with a name of the form "Picture x" where "x" is an integer).<br /><br />(3) Convert the screen shot image to CMYK or grayscale to suit your needs.<br />Not all service bureaus require CMYK! If you are displaying the PDF file<br />and printing to laser printers, CMYK buys you nothing other than potentially<br />a larger file.<br /><br />(4) Flatten the image. Layers buy you nothing here and may cause problems<br />later in saving the file.<br /><br />(5) Do not resize or change resolution of the image!!!!!!<br />(Why? Because you generally don't know at this time exactly what the magnifications and resolutions are that you will be viewing and printing<br />with! In fact, zooming in and out with Acrobat or Acrobat Reader changes<br />those requirements on the fly. Better to simply just have the captured<br />data. Upsampling or downsampling at time of need to exact specifications<br />yields much better results than multiple such transformations!)<br /><br />(6a) Re-editable by Photoshop, but "bloated" EPS file size option!<br />Save the image using File=>Save As using the "Photoshop EPS" option. In the "EPS options" screen, you should use the TIFF (8bits/pixel) preview option (yields an EPS file that can be used both on Mac and Windows), <br />Encoding "binary" (ASCII can be twice the size and JPEG is totally inappropriate for screen shots). Check "PostScript color management" if you are using color management in your workflow. The key though is that you MUST check "Image Interpolation". This sets a image dictionary key that Adobe<br />PostScript Level 2, Adobe PostScript 3, Acrobat, and Acrobat Reader use to do<br />very high quality image interpolation and/or downsampling appropriate to the<br />device's actual resolution and technology at the time the image is viewed or printed. (Distiller passes this key along from PostScript or EPS in a PostScript stream into the equivalent PDF image key!) Close Photoshop 6.<br /><br />                        OR<br /><br />(6b) Compact EPS file size option!<br /><br />        (i) Save the image using File=>Save As using the "Photoshop PDF" <br />option.<br />        In the "PDF options" screen, you should use the ZIP encoding<br />(lossless<br />        compression) option. The key though is that you MUST check <br />        "Image Interpolation". This sets a image dictionary key that Adobe <br />        PostScript Level 2, Adobe PostScript 3, Acrobat, and Acrobat<br />Reader use<br />        to do very high quality image interpolation and/or downsampling <br />        appropriate to the device's actual resolution and technology<br />at the time<br />        the image is viewed or printed. (Distiller passes this key along from <br />        PostScript or EPS in a PostScript stream into the equivalent<br />PDF image <br />        key!)<br /><br />        (ii) Close Photoshop 6.<br /><br />        (iii) Open the resultant PDF file in Acrobat 5 or 4.05a. Save the PDF<br />        file as an EPS file using the export function in Acrobat 4.05a or<br />        the Save As function in Acrobat 5. Set the options for binary EPS, <br />        TIFF header, and language level 3.<br /><br />        (iv) Close Acrobat.<br /><br />(7) Import the resultant EPS file into whatever application you have in which you wish to include the screen print. Obviously you will only see the EPS preview in those applications (except for InDesign), but your resultant printed output (via PostScript or PostScript=>PDF) or display via Acrobat / Acrobat Reader will be of exceptionally high quality. During distillation, do not downsample any of these images. Downsampling of the screen shots can be avoided by having a high enough threshold for downsampling; 300dpi or higher will do!<br /><br />Working on a budget? It turns out that you can replace Adobe Photoshop 6<br />with Adobe Photoshop Elements 1.0 if you do not need to convert to CMYK<br />and don't need any other advanced image handling. This could save you $500 a copy if your image handling needs are more limited.<br /><br />NO, as far as I know, neither JASC nor Corel PhotoPaint nor any of the other budget image edit programs offer the EPS export image interpolation<br />option, assuming they even offer the EPS format. Furthermore, none of the nifty screen capture utilities that we know of offer either EPS or EPS with the image interpolation option.<br /><br />We know of NO better means of producing high quality printed or displayed<br />screen shots in an output device independent manner. Forget GIF, TIFF,<br />BMP, and especially JPEG. Forgetting the issue of the image interpolation<br />feature for the time being, use of any of these formats results in the "host"<br />program (such as FrameMaker or Microsoft Word, etc.) doing their own <br />resizing of the image in conjunction with the PostScript drivers based<br />on the device resolution selected. The bottom line is that by the time Acrobat gets to display the image or the PostScript RIP gets the image data,<br />the image data will have been upsampled, downsampled, resampled, i.e.<br />overmangled!<br /><br />Also, note that for purposes of placing other images in FrameMaker or similar applications, EPS with the image interpolation also is the preferred<br />means of image placement for exactly the same reasons. In terms of image<br />resolution, you may choose to leave as-is and let the Distiller do the heavy lifting, if necessary or downsample in Photoshop if the original image is grossly over-endowed, so to speak. Remember, you cannot later reconstruct what you downsample now.<br /><br />With regards to the "resolution" that you set the Acrobat Distiller printer to, that resolution primarily affects non-EPS image handling. As long as you set the resolution to 600 dpi or greater, character and vector artwork placement will be fine and not affected. You don't need to use the resolution of the final device (in fact, don't go over 1200 dpi under Windows or you might hit a nasty bug in FrameMaker's interface with the driver).<br /><br />For distillation job options, always use "compress text and line art". This is non-lossy compression and you gain nothing by not using it other than a larger PDF file size.<br /><br />I know that this information is very much at odds with what your service<br />bureaus, printers, or Kinkos will tell you, but it is authoritative and<br />Adobe Systems Incorporated stands behind it completely when used in<br />conjunction with Adobe Acrobat and RIPs with Adobe PostScript Level 2 or Adobe PostScript 3.

  • Is it possible to capture image at specified wavelength​s

    The filter is attached to camera. The filter is switching betweeen   5 specified wavelengths. On giving the "Start Aquisition" button the camera will capture image. the problems are
    1)  the wavelength selection is written as  subvi. It changes the wavelengths , but the control returns to the calling vi only with the final wavlength( here 686.7). The other values are not reflected in the main vi.
    2)  on giving the "start aquisition" the image taken is for this final wavelength. Is it possible to take images for all the 5 wavelengths by giving "start aquisition" only at the beginning?
    3)  Now the execution control loops inside the section which captures the image( since I have given a while loop there)
    4) instead of this sub filter vi, is it possible to add a sweep program( i already have one) so that when the desired wavelength values come it will capture the image.
    Attachments:
    image changed2.vi ‏251 KB
    subfilter.vi ‏22 KB
    sweep.vi ‏22 KB

    Your code shows a complete lack of understanding of dataflow programming. Maybe you should start out with a few tutorials and study some example programs from the example finder.
    How are you running the code? Run continuously??? There is no toplevel loop! It is difficult to say more, because most subVIs are missing so we cannot even test.
    Your toplevel is unmaintainable, with loops and sequence structures stacked knee deep. Have a look at state machine architecture instead. Your only seem to work if controls are operated in a specific sequence. Most of the time, controls will not respond because the code does something else.
    Your "sweep program makes no sense. Why are you setting a value property that overwrites a control, making the control useless. Only use controls if the user can actually change something. Why not just initialize the shift register with a diagram constant of 400? After you do that, the sequence structure is obsolete, delete it. Why is there a local variable? Why don't you delete the local variable and place the indicator in its place inside the loop? 
    Your subfilter code makes no sense. Nothing will happen in the main VI while it is running. Data is only returned at the output terminal once the VI is finished. It does not change any wavelenghts as you claim, it simply updates it's front panel. What else do you expect? Why don't you flatten that code in the main VI, simply autoindexing an array with three wavelents in the loop that does the acquisition. Why does the output go to a case strucure with only choices 0 and 1? Since none of the outputs will ever be 0 or 1, only the empty default case will ever execute.
    LabVIEW Champion . Do more with less code and in less time .

  • How do I connect two video cameras to my computer have them both show up on the desktop at the same time so I can see and capture both images using a screen capture program?

    Hello, 
    I am a teacher and want to make some videos to post online for my class.  I would like to have it set up so that I have a powerpoint presentation going, a video camera pointing at a piece of paper I can write on and another video camera pointing at me.  How do I do this?  I have seen several solutions but they seem to be for switching between videos whereas I want both video images to be on at the same time.
    Also, is there a screen capture program you would recommend?

    Go to System Preferences - Sharing and change the computer name there. You can also, optionally, change the name of your hard drive to further clarify the origin of your backups. Click once on the "Macintosh HD" on your desktop, then click its name to allow you to edit it.
    Matt

  • Why doesn't markup in Mail app work on screen captures or pasted images?

    When in Mail app, If i right click and choose Capture selection from Screen I can take a screenshot which is inserted into the email.   The markup icon in the top right of the image never appears.  This is also true for images I copy and paste into the email.  It seems to me that being able to markup a screen capture is one of the most important use cases for this type of feature. 

    SteveTEXAS,
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    I have no idea what would cause this. I think it would be something important to provide feedback to Apple about. https://www.apple.com/feedback/macosx.html
    You can find the Grab app in Macintosh HD > Applications > Utilities
    Or you can use the keyboard shortcuts to take a screenshot. They will place them on your desktop.
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    To select a whole window - ( Command ) ( Shift ) ( 4 ) > ( Spacebar ) > Click Window you want
    For whole display - ( Command ) ( Shift ) ( 3 )
    Hope that helps,
    Weston

  • TS3274 If I touch camera icon, the screen turns black instead of capturing image. Let me know how to troubleshoot.

    If I touch camera icon, the screen turns black instead of capturing image. Let me know how to troubleshoot?

    Try closing the Camera app:
    1. Double-click the Home button to reveal the Task Bar
    2. Hold down the Camera app for a second or two until you see the minus sign
    3. Tap the minus sign to close app
    4. Tap area above Task Bar to return to Home screen
    If the above doesn't solve the problem, do a reset:
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