How to use the node to call a library function to convert C++ source codes

Similar Questions

• How to use the node function call library for a function in the dll with the data SUB type

  Hi all

  I would ask for your kind help

  I am facing a problem with the call library node.

  I have a C++ (stdcall) function, which has Sub as data type

  XXXX error code (hwnd, lid, getValue, * Sub data1, * Sub data2)

  data1 and data2 types are constantly changing based on the value of 'getValue '.

  Mainly I can use the call library node several times and adapt each node according to the types of data data1, data2 and extract the values and use in the code. Here is no question. Real question is:

  My question:

  How can I use a node of library time call and make a case according to the 'getvalue', who will control the data1, data2 data type. Here I really seeking solutions.

  My tests:

  I used varaints as entry to the libray call node of the data1, data2 and selected parameters in the call libraby node as "Adapt to type. Here labview just crashed.

  I appreciate your suggestions to feedbackand.

  Thank you

  Karine

  You must allocate enough space for data1 and data2, and then pass a pointer to this space. An easy way to do this is the function to initialize table. Set the U8 type and size for the number of bytes required. Pass this array to the function as a pointer of table data.

  After the function call returns, you need to extract the data in the table. You can do it manually, but a simple approach is to use the array of bytes to a string. Then, in a housing structure, use Unflatten chain to convert the string to the correct data type. This method also converts the "endianness" which will be probably necessary; Be sure to only set all entries for unflatten correctly.

• How to use the type of packages, procedures and functions in another schema?

  I have two schema target in an OWB project, such as A and b. In a map of A, I would use some packet types, functions and procedures of B. I tried the method of the suggested such synonym, but I couldn't find the metadata of these when importing... The only type of synonym I can import is the synonym for the table. Y at - it a bug for synonym?
  
  If I can't use a synonym for that matter, is there another way to solve the problem?

  Now, in some cases you will absolutely need to create the second module as Carsten described, but it should also be noted that you can reference objects in things like Expressions even if you have not loaded the metadata. It's only when you need strong bonding that it becomes necessary to import objects. For everything else, as long as the reference can solve during the compilation so you are good to go.

  For example, I target a function in a schema (S1) and a synonym private that it in another (s2). A mapping of the S2 schema has an expression object that uses the synonym of the function in the expression property for a couple of the attirbutes of output. The synonym has not been loaded in metadata - OWB has indeed no knowledge of its existence. But she is resolved at compile time if the mapping validates and generates successfully.

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  iPhone 6s start-up aid

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• How to read / write to a HID device with call a library function?

  I had tons of problems to read from a device USB HID in VISA. I had no problem make a driver for him and write it in LabVIEW. However, whenever I try to read using Read Visa, Visa USB Control In or interrupt USB event get different types of error messages.

  I decided to give up this route and talk to the device through hid.dll, setupapi.dll and any other .dll that I need to use. The problem is that I'm not sure I correctly use the nodes to call a library function... I've seen several KB articles that explain how to set up the nodes call library feature, but I need more information. I can configure stuff and sometimes get things to work, but I don't always know what each specific selections in Settings tab is doing. Can someone give me more detailed information on what do the settings tab and all of its components?

  Thank you

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  Have you looked HERE?

  Shane.

• How to use the date with the report parameter format

  Hi all
  
  How to use the date format with this tag function,
  
  <? param@begin:P_FROM_DATE? > <? $P_FROM_DATE? >
  
  This date of form source of report and setting is coming as this 2012/11/01 00:00:00.
  
  So now I need this in MY-DD-YYYY marker. I tried like this..? param@begin:P_FROM_DATE? > <? $format - date: P_FROM_DATE; ' DD-MON-YYYY '? >
  
  but its giving error. Can someone pls how to convert to the format of date custom.
  
  Thanks and greetings
  Srikkanth.M

  Problem solved.

  REF this link

  Date Format of XML

• Liquid Z 3 How to use the small screen-receving-phone-call?

  Hello

  I would like to know how to use the small screen that appear in a case to receive a phone call.

  There are two types of screen wen we receive a phone call. I know how to use a larger. But not for the little ones. Aid for the small indicates that we have to drag the green phone symbol that I guess, but to fall on what? The manual doesn't explain it at all, it is not obvious!

  Thank you very much for your help!

  With "appellant float" activated, simply to press the Red or green button, no need to call, if the "small screen" is that of the attachment

• How to change the value of string clustered, to implement using the node value of property instead of writing directly on the flow of data or using the variable

  new to labview :-) and I have a problem when I want to change the value of a string in bunches, and I want to implement this using the node value of property instead of writing directly to the stream or by using the variable, enclosed is the picture.   No matter, I have change in cluster (control) or value of Popery out (indicator) cluster, the value (sensor 7) dataflow keeps unchanged even I gave the new value by value of property node. Thank you to give me some advice about this.

  

  Hi GerdW

  Thanks a lot for your answer. The reason I'm stubbornly tring to break the flow of DATA is: we have a test system that have about 100 screws, they have a few connected flow, some of them will be unbundling a cluster dataflow chain to check the value in order to make the different cases.  Now I want to insert user event by changing the control and influential cases during run time.

  As I initially uses a global variable (to control cases) instead of unbundle string data flow, it works well.  But then, I found there are a lot of screws that are using the string unbundle.  One of the 'lazy' means, I tried is to change the value via the property node (because that way, I did not need to find all the places where using the unbundle string and replace them with the global variable), then I noticed a problem with "dataflow", the value in the stream of cluster in fact will not be changed by changing the value of the property node.

  I did a test with VI simple (like the picture in last post), and after reading your advice, I tell myself that I need to understand the concept of "DATAFLOW" in labview, it seems that my "lazy" way can not work in this scenario.

  I have attached the criterion VI here, have you furthur suggestions on what I can do in this case?

  Mant thanks!

  Minyi

• How to access the nodes created recently in a DOM

  Hello
  
  I use:
  
  Oracle Database 11 g Enterprise Edition Release 11.2.0.1.0 - 64 bit Production
  PL/SQL Release 11.2.0.1.0 - Production
  CORE 11.2.0.1.0 Production
  AMT for 64-bit Windows: Version 11.2.0.1.0 - Production
  NLSRTL Version 11.2.0.1.0 - Production
  
  I create a XSL dynamically and I need to check if a node has already been created. My problem is not GETCHILDRENBYTAGNAME or SELECTSINGLENODE seem to find the nodes recently added to the document. For example, with this snippet of my code:
  
  SET SERVEROUTPUT ON
  DECLARE
  DOC DBMS_XMLDOM. DOMDOCUMENT;
  ROOT DBMS_XMLDOM. DOMELEMENT.
  ELEM DBMS_XMLDOM. DOMElement.
  NŒUD DBMS_XMLDOM. DOMNODE;
  ELEMN DBMS_XMLDOM. DOMNODE;
  TO THE VARCHAR2 (8 CHAR);
  DBMS_XMLDOM ATTR. DOMATTR;
  LIST DBMS_XMLDOM. DOMNODELIST;
  CLOB TMPCLOB;
  BEGIN
  -Create DOM document with < xsl: template mode = 'content' match = "xxx" / >
  DOC: = DBMS_XMLDOM. NEWDOMDOCUMENT (SYS. XMLTYPE ("< xsl: stylesheet version ="1.0"xmlns: xsl ="http://www.w3.org/1999/XSL/Transform">")
  ((< xsl: template mode = "content"match ="xxx" / > < / xsl: stylesheet > '));
  ROOT: IS DBMS_XMLDOM. GETDOCUMENTELEMENT (DOC);
  
  -Add new item < xsl: template mode = 'content' match = "yyy" / >
  ELEM: = DBMS_XMLDOM. CREATEELEMENT (DOC, ' xsl: template ',' xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" ');
  ELEMN: = DBMS_XMLDOM. APPENDCHILD (DBMS_XMLDOM. MAKENODE (ROOT), DBMS_XMLDOM. MAKENODE (ELEM));
  ATTR: = DBMS_XMLDOM. CREATEATTRIBUTE (DOC, 'name');
  DBMS_XMLDOM. SETVALUE (ATTR, "content");
  ATTR: = DBMS_XMLDOM. SETATTRIBUTENODE (DBMS_XMLDOM. MAkeELement (ELEMN), ATTR);
  ATTR: = DBMS_XMLDOM. CREATEATTRIBUTE (DOC, 'match');
  DBMS_XMLDOM. SETVALUE (ATTR, 'yyy');
  ATTR: = DBMS_XMLDOM. SETATTRIBUTENODE (DBMS_XMLDOM. MAkeELement (ELEMN), ATTR);
  
  [- Check if / / xsl:template[@mode='content' and @match = 'yyy'] exists (it should because I just added it)
  To THE: = 'yyy ';
  NŒUD: = DBMS_XSLPROCESSOR. SELECTSINGLENODE (DBMS_XMLDOM. MAKENODE (DOC),'/ / xsl: template [@mode = "content"and @match ="' |] TO THE | '] ',' xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" ');
  IF DBMS_XMLDOM. ISNULL (NODE) THEN
  DBMS_OUTPUT. PUT_LINE(ÀLES||) "There is NO');
  ON THE OTHER
  DBMS_OUTPUT. PUT_LINE(ÀLES ||) "Exists");
  END IF;
  
  [- Check if / / xsl:template[@mode='content' and @match = 'xxx'] exists (it should because I was in the original scanned document)
  To THE: = "xxx";
  NŒUD: = DBMS_XSLPROCESSOR. SELECTSINGLENODE (DBMS_XMLDOM. MAKENODE (DOC),'/ / xsl: template [@mode = "content"and @match ="' |] TO THE | '] ',' xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" ');
  IF DBMS_XMLDOM. ISNULL (NODE) THEN
  DBMS_OUTPUT. PUT_LINE(ÀLES ||) "There is NO');
  ON THE OTHER
  DBMS_OUTPUT. PUT_LINE(ÀLES ||) "Exists");
  END IF;
  
  -Try with GETELEMENTSBYTAGNAME
  LIST: = DBMS_XMLDOM. GETELEMENTSBYTAGNAME (ROOT, 'template', ' xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" ');
  DBMS_OUTPUT. PUT_LINE (DBMS_XMLDOM. GETLENGTH (List) | 'Node (s)');
  
  -Try with SELECTNODES
  LIST: = DBMS_XSLPROCESSOR. SELECTNODES (DBMS_XMLDOM. MAKENODE (root), ' / / xsl: template ',' xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" ');
  DBMS_OUTPUT. PUT_LINE (DBMS_XMLDOM. GETLENGTH (LIST) | 'Node (s)');
  
  DBMS_LOB. CREATETEMPORARY (TMPCLOB, TRUE);
  DBMS_XMLDOM. WRITETOCLOB (DOC, TMPCLOB);
  DBMS_OUTPUT. PUT_LINE (TMPCLOB);
  DBMS_LOB. FREETEMPORARY (TMPCLOB);
  DBMS_XMLDOM. FREEDOCUMENT (DOC);
  END;
  /
  
  anonymous block filled
  YYY IS NOT Exists
  XXX exists
  1 node (s)
  1 node (s)
  < xsl: stylesheet version = "1.0" xmlns: xsl = "http://www.w3.org/1999/XSL/Transform" >
  < xsl: template mode = 'content' match = "xxx" / >
  < xsl: template name = "content" match = "yyy" / >
  < / xsl: stylesheet >
  
  [[Why SELECTSINGLENODE can't find ' / / xsl:template[@mode='content' and @match = 'yyy']' node that was dynamically added to the document, but he finds ' / / xsl:template[@mode='content' and @match = "xxx"]' which was originally in the parsed document?
  
  Y at - it an explanation or I do something wrong? "How can I check if I already added a xsl: template ' to avoid duplication?
  
  Thanks for your help
  Kind regards
  Ramón García

  Please read the FAQ link under your name on how to use the tag {code} (without the space) to keep the formatting of the code.

  If you look carefully at the XML output and what you are looking for, you can see the issue.

  Look at your attribute names. One is called the mode and the other name. Looking for your XPath

  @mode = "content"

  that does not exist on the node where match = "yyy". That's why your code can't find the match, since he's looking for something different than what you have built

  ATTR: = DBMS_XMLDOM. CREATEATTRIBUTE (DOC, 'name');

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