size_t vs ssize_t

Similar Questions

• Why the editor user interface prevents defining size_t / ssize_t?

  Programmatically it is possible to put in VAL_SIZE_T, VAL_SSIZE_T,..., VAL_INTPTR_T, VAL_UINTPTR_T...

  Hi Wolfgang,.

  The user interface editor uses intptr_t and unsigned intptr_t therefor. These types are functionally identical to the size_t and ssize_t and so there is no need for all four of them to be in the editor.

  Luis

• size_t numerical control by GUI

  I'm getting some CVI behaviors for 32-bit application and 64-bit. Specific, I want to build the application so that I only need re-compilation for each output of 32-bit or 64-bit. One of them uses integers signed and not signed in entrance and exits in the GUI. I would like to first of all operating system data type directly in the GUI, but ssize_t and size_t types are not available in the interactive tools. So I create a GUI for 32 - bit
  -using as digital input (hot)
  -using digital as outputs unsignedInt (indicator)

  After the loading of the GUI depending on the hand, I change the attributes of data type control:
  -the program "recall" function Committee dependent integers from the OS as option
  -SetCtrlAttribute (mainp, PANEL_INPUTVALUE, ATTR_DATA_TYPE, VAL_SSIZE_T);
  -SetCtrlAttribute (mainp, PANEL_OUTPUTVALUE_1, ATTR_DATA_TYPE, VAL_SIZE_T);
  -SetCtrlAttribute (mainp, PANEL_OUTPUTVALUE_2, ATTR_DATA_TYPE, VAL_SIZE_T);
  I get no error in compilation. As expected, nothing really changes for 32-bit debugging i.e. or errors. And when running 64-bit debugging it starts also without mistakes (obvious). And it goes beyond the limit of 32-bit of 2 ^ 31.

  Now, I try an alternative: I set the GUI for 64 - bit with example data types int64 and unsigned int64. When data types are changed after the loading of the IUR depending on the hand, I get no fatal errors:
  -For the first line for the digital input: the attribute passed is not valid (error - 46).
  -For the second and third lines for outputs digital: invalid control ID (error - 13).
  - And subsequently, all three figures disappeared from the GUI.
  These error happens when I run it in 32-bit as 64-bit.

  The disappearance of the controls look like somewhat like explained before. However, the GUI is new and build CVI2010.
  (http://forums.ni.com/t5/LabWindows-CVI/edit-numeric-control-of-type-int64/m-p/1411662#M50699)

  Q1: Is there a limit on the construction of the GUI with int64?
  Q2: Is there a solution where I can use VAL_SIZE_T and VAL_SSIZE_T when the GUI is generated manually?

  I use:
  Windows 7 x 64
  CVI2010 (10.0.1)

  Kind regards, Jos

  Hi Jos,

  The runtime error is caused by the fact that these controls do not exist in the expert group. You can see more clearly, what happens if, after you save the file, you close the window, and then reload the file. You will notice that the two controls will be missing.

  Controls are not saved when using the 64-bit data types is the IUR is configured to use the CVI 8.1 format. You can see in the lower right window of the user interface editor. Because 64-bit in the user interface controls data types were not been introduced prior to version 8.5, these controls cannot be included in a 8.1 UIR.

  We have already identified this scenario as a major flaw in usability: when you save the IUR in an older format, the CVI should show you a warning telling you all the controls or other features, that were not saved after save in the old format. This has been fixed in a future version of the CVI, but, until then, it's something you have to look out for.

  To save the file to the CVI 2010 format, you must only select file > save as... and select 2010 than the version in the list "Save as type".

  Luis

• the display of ssize_t value in table cell

  Hello

  I want to display a number of type ssize_t in a digital table cell. In the user interface editor, the cell has been set to intptr_t.

  Runs the code in debug64 works fine, in debugging I get the error message:

  FATAL RUN - TIME ERROR: Invalid argument type: found "int", "__int64" expected.

  I have to add: in the user interface editor, I created the table with one row only, I have add as many rows programmatically using InsertTableRows (but the cell types need to be inherited). The error appears when filling out the cell in the last row.

  Ideas?

  
  

• can not find size_t during import a dll and calling a labview crash function

  Hello, experts

  I need to use FingerLakeInstrument DLL (see attachment) within Labview for talking to a CCD camera. It is built from microsoft visual studio C++

  I unzip FLI dll in my D:\proj\...\linfli-32 and import the dll from there. created a c:\FLIDBG.txt FLI dll must write the debug message on it if are called the FLISetDebugLevel() or others.

  During the import of the dll, the first thing I got is (IE size_t) could not be found. I installed the free version of microsoft visual studio C++

  but can not find 'typedef unsigned int size_t;

  in the end, I just added

  typedef unsigned int size_t;

  in the libfli.h. Having done this, I am able to import all the functions in Labview and have a library of user called libfli.

  However, as soon as I start to call a simple function in a test.vi, as FLIGetLibVersion (char * worm, size_t len), which consists of nothing else the library, the labview crash.

  I created a simple C test.exe who calls a lot of functions with no problems

  any suggstion?

  concerning

  Xiaofeng

  You don't have not shown us how the LabVIEW code looks like. The size_t setting refers to the length of the buffer, in that you spend. In this case you pass a string. So, presumably, you created a buffer zone in LabVIEW to a string of sufficient size, and set the parameter "len" to the length of this string. You also have to make sure you use the correct calling convention?

• display of the values of ssize_t on a whole control

  Hello

  in a related issue to my previous post (http://forums.ni.com/ni/board/message?board.id=180&thread.id=46242) it is not obvious to me how to display values of ssize_t on a CNC.

  For a digital control, I have to decide using int or int64, while the idea of ssize_t was that this change will take place according to a macro (compilation of 32-bit or 64-bit)...

  Thank you!

  Hi Wolfgang,.

  The only restriction is that, if you are currently using the editor user interface to set the data type of the control, you will need to override it programmatically:

  SetCtrlAttribute (Panel, control, ATTR_DATA_TYPE, VAL_SSIZE_T);

  Luis

• NDK tools c / c ++: indefinite ' size_t' by c ++ libs?

  Hiya,

  I get a strange result when using the types of variables 'size_t' in my applications. "size_t" is defined in the libs C and . Usually when you work with C++ though, its more common to include and , which are usually just references back to libraries C. Unfortunately, it does not work as expected (for me anyway) and I explicitly include the C libraries, that is to say C++ libraries do not seem to do anything. There obviously a trivial work around, but it took some time to understand and I do not know why it does not work. I use NDK 2.0.1.

  example:

  (hello.h)

  #include

  #include

  (hello.cpp)

  #include "hello.h".

  int main()

  {

  size_t helloWorld = 0;

  std::cout< "helloworld="" "="">< helloworld=""><>

  }

  (compilation)

  CQS-Vgcc_ntox86-lang-c ++-I/home/preet/bbndk-2.0.1/target/qnx6/usr/include/c++-I/home/preet/bbndk-2.0.1/target/qnx6/usr/include o hello.o - c hello.cpp.

  (exit)

  Hello.cpp: In function 'int main() ':
  Hello .cpp: 5: error: 'size_t' was not declared in this scope
  Hello .cpp: 5: error: expected ';' before 'helloWorld '.
  Hello .cpp: 6: error: 'helloWorld' was not declared in this scope
  CC: /home/preet/bbndk-2.0.1/host/linux/x86/usr/lib/gcc/i486-pc-nto-qnx6.5.0/4.4.2/cc1plus error 1

  If you replace with in hello.h to compile well... no idea why this is happening?

  Try std::size_t or using namespace std;

  Stuart

• fgetc reports ' argument open stream ", the fopen() function succeeded

  Hello

  I'm looking to implement the GNU 'getline()' function in CVI and the function starts as:

  getline.dll:

  Ssize_t getline WINAPI LIBAPI (char * lineptr, size_t * n, FILE * stream) {}

  int c;

  While (TRUE) {}

  c = fgetc (stream);    Error occurs here

  ...

  }

  }

  (LIBAPI is DLLEXPORT or DLLIMPORT). It is then compiled as a DLL and put it somewhere in the world. Then I have another DLL that does this:

  Driver.dll:

  int ReadWaveform (void) {}

  FILE * fwave;

  char * lineptr = NULL;

  int n = 0;

  fwave = fopen ("waveform.txt", "r");

  Len = getline (& lineptr, & n, fwave);

  ...

  }

  I get the error "Argument must be an open stream" when the 'fgetc()' function is called. It does not produce an error if this fgetc() is put in the ReadWaveform() function. The file exists, it is readable (the permissions of files are read-only, but read/write changes its behavior either). The two libraries are compiled in debug (or the getline.dll has also been compiled as a liberation, but does not change because the file can not be read and fgetc() reports EOF immediately that it should in case of error).

  So there seems to be some issues to limit cross-DLL when using file streams if open the stream in the DLL driver.dll and work with her in getline.dll. I did not have this problem with other C languages.

  any help on this would be appreciated. I use CVI 9.0 on Windows XP.

  Thank you

  Jason.

  I think this problem is the same as malloc/free deliver you in the other thread. Basically, I think that your two dll is built with runtime different support options, and so, engine running different CVI DLLs are called to manage resources. If you build your dll/program with the same runtime support option, then you should be able to share the FILE pointer through modules - you can't always do it for other reasons of design.

• ReadFile for expressions of folklore

  I use the function ReadFile read in ASCII mode. ReadFile account CR + LF as a LF.
  The byteRead are always less than the size of the file that is obtained with the help of GetFileInfo(). The read data is so not until the end of the file.
  The loop in this case never go out because there are always a few bytes to read due to.

  How can I use ReadFile to read all the content of the file in ASCII mode or set the pointer to consideras two bytes?

  Get the size of the file
  status = GetFileInfo (* patternFilePath, (ssize_t *) file size);

  Open the file
  localFileHdl = OpenFile (* patternFilePath, VAL_READ_ONLY, VAL_OPEN_AS_IS, VAL_ASCII);

  char * nextPositionToWrite = * patternFileContents;
  size_t leftOverToRead = (size_t) * file size;

  {}
  Read the file
  bufLen = ReadFile (localFileHdl, nextPositionToWrite, leftOverToRead);
  leftOverToRead = leftOverToRead - bufLen;
  nextPositionToWrite = nextPositionToWrite + bufLen;
  } while (leftOverToRead > 0);

  Close file
  errChk (closeFile(f) (localFileHdl));

  A single ReadFile as your poster the contents of the entire file, provided the buffer is large enough, regardless of what account the return from the call.

  County of back play only if you have read the file in loop: in this case, given that ReadFile treated pair CR + LF as a single character and therefore does not count the CR, the code should work with

  leftOverToRead-= + 1 bufLen;

• ListFindItem with StartingPosition out of reach: BUG

  Hello

  The index returned by ListFindItem is BAD when:

  • StartingPosition = 0 (this is a wrong value: StartingPosition must be > = 1).
  • The search value is equal to the LAST item inserted in the list:

  The following code example shows the bug in the TEST_D:

  int main (int argc, char *argv[])
  {
      ssize_t     startingPosition = 0;
      size_t      index = 0;
      int         val = 0;
  
      ListType myList = NULL;
  
      myList = ListCreate (sizeof(int));
  
      val = 1;
      ListInsertItem (myList, &val, END_OF_LIST);
  
      val = 2;
      ListInsertItem (myList, &val, END_OF_LIST);
  
      val = 3;
      ListInsertItem (myList, &val, END_OF_LIST);
  
      // TEST_A: OK
      startingPosition = 1;
      val = 1;
      index = ListFindItem (myList, &val, startingPosition, IntCompare);
      // index = 1 --> OK
  
      // TEST_B: OK
      startingPosition = 10; // WRONG value: startingPosition is over the number of items.
      val = 1;
      index = ListFindItem (myList, &val, startingPosition, IntCompare);
      // index = 0 --> OK because startingPosition is out of range (>3)
  
      // TEST_C: OK
      startingPosition = 0; // WRONG value: startingPosition must be >= 1
      val = 1;
      index = ListFindItem (myList, &val, startingPosition, IntCompare);
      // index = 0 --> OK because startingPosition is out of range (<1)  
  
      // TEST_D: NOT OK
      startingPosition = 0; // WRONG value: startingPosition must be >= 1
      val = 3;   // value of the LAST ITEM inserted in the List
      index = ListFindItem (myList, &val, startingPosition, IntCompare);
      // index = 3 --> NOT OK: the behaviour is different compare to TEST_C.
      // In this case, ListFindItem must return 0 (NOT 3) because startingPosition is out of range (<1).
      // If you look for another item (not the last: val=1 ou val=2) ListFinfItem returns 0 --> OK
      return 0;
  }
  

  Hello jm73,

  The behavior you're seeing is planned. Please note that you can use the following two macros to specify the starting position: END_OF_LIST and FRONT_OF_LIST . Macros are defined as follows in toolbox.h :

  #define FRONT_OF_LIST -1 /* Handy Constants that substitute for item positions */
#define END_OF_LIST 0 /* END_OF_LIST means one past current length of list when
inserting. Otherwise it refers the last item in the list. */

  Specifying 0, you say the ListFindItem function to start looking at the end of the list, that is why, he finds the last item.

• NDK errors with external file

  I get no error in my code, but for some reason, I get errors in the file: 'unistd.h' located in '\target\qnx6\usr\include\ [ndkdir] '. I have 13 of them. Errors are: '' ssize_t' in the namespace "std" does not name a type', "std::dev_t has not been declared", "std::mode_t has not been declared" and "std::ssize_t has not been declared. Others are repeats (the first is the one that appears the most). They are clearly related. This is one of the lines that produced the first error: ' extern _CSTD ssize_t pread64 (int __filedes, void * __buff, size_t __nbytes, off64_t __offset _CSTD); I don't know why he did it, because I have not modified the file.

  Thank you and sorry for the bad title.

  An executable application must have a main function.  The linker does not produce your binary, unless a file object any provides a water main.  It would not be bound to the addition of the math library; It's just adding allowed mathematical library binding process to reach the point of trying to generate the final linked binary file.

  BTW, rather than add "-lm" for additional Options to the linker, you instead add "m" option of libraries.  This indicates explicitly the IDE your application requires libm, which may allow the other features related tools.  With a little '-lm ', the IDE know the meaning of the parameter.  (I assume that you have a construction project managed, not a makefile project)

  See you soon,.

  Christian

• LG monitor external switching failing

  Hi all

  Much has been written on the recognition of external monitors, but I was not able to find or solve my particular problem.

  I had an early 2015, 13 "Macbook Pro retina El Capitan, which I want to connect an external LG monitor 24 inch (24EA53) via the build-in HDMI port. As soon as I plug the mac monitor recognizes and tries to 'activate', but it seems that this fails, because she turned back activate the monitor and not activated (the cycle is long about 3 seconds). The monitor shows also in the meantime that no signal is present, then it switches to a completely black screen and guard bike like that. Sometimes after a few switches that he works all of a sudden, it sometimes takes too long and I unplug the monitor and try again later. As soon as it works, there is no problem. The same problem arises when waking from sleep (display). I have no problem with connecting to my TV (LG, also).

  On my old laptop (early 2011 Macbook Pro 13 ") he has never been a problem with the monitor on a thunderbold-> hdmi adapter. I also tried this card on my new mac, but the same problem exists. Below the system log indicates what's happening. Any ideas? Thank you!

  30/04/16 11:03:37, 640 WindowServer [194]: handle_will_sleep_auth_and_shield_windows: Report.

  30/04/16 11:03:37, 657 WindowServer [194]: CGXDisplayDidWakeNotification [67782171814649]: display kCGSDisplayDidWake

  30/04/16 11:03:46, 703 WindowServer [194]: display connection received modified for display 0x4280a40

  30/04/16 11:03:46, 704 WindowServer [194]: found 27 modes for display 0x04280a40 [27, 0]

  30/04/16 11:03:46, 719 WindowServer [194]: WSDisplayPipeTransactionEnd returned error e00002be

  30/04/16 11:03:46, 729 WindowServer [194]: display connection received modified for display 0x3f003d

  30/04/16 11:03:46, 730 WindowServer [194]: found 1 modes for display 0x003f003d [1, 0]

  30/04/16 11:03:46, 730 WindowServer [194]: display connection received modified for display 0x1b566b02

  30/04/16 11:03:46, 730 WindowServer [194]: found 1 modes for display 0x1b566b02 [1, 0]

  30/04/16 11:03:46, 730 WindowServer [194]: display 0x1b566b02 changed state in offline mode

  30/04/16 11:03:46, 745 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) [1680 x 1050], 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:46, 745 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:46, 745 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2817, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:46, 745 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:46, 745 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2818,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:46, 745 WindowServer [194]: display 0x003f003e: GL mask 0 x 4; limits (-127,-1080 [1 x 1], 1 modes available)

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 2, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:46, 745 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:47, 022 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "iStat Menus status' expired for synchronous notification type 109 (< unknown >) (CID 0xd007, PID 362)

  30/04/16 11:03:47, 136 WindowServer [194]: display 0x04280a40: Unit 0: Mode 1440 x 900, CGSThirtytwoBitColor, resolution 2, ioModeID 80005003, ioModeDepth, 0x0, IOReturn 0 x 0 x 0

  30/04/16 11:03:47, 161 WindowServer [194]: display 0x04280a40: Unit 0: Start Mode 1440 x 900, CGSThirtytwoBitColor, resolution 2, ioModeID 0 x 80005003, ioModeDepth, 0x0, IOReturn 0x0

  30/04/16 11:03:47, 161 WindowServer [194]: CGXDisplaysDidReconfigure: display mode has changed

  30/04/16 11:03:47, 161 WindowServer [194]: CGXDisplaysDidReconfigure: added display

  30/04/16 11:03:47, 161 WindowServer [194]: CGXDisplaysDidReconfigure: removed display

  30/04/16 11:03:47, 166 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) (1440 x 900), 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:47, 166 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:47, 166 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2464, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:47, 166 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:47, 166 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2465,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:47, 166 WindowServer [194]: display 0x003f003e: GL mask 0 x 4; limits (2466,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 2 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:47, 175 WindowServer [194]: MPAccessSurfaceForDisplayDevice: implement the flip page on 0x04280a40 screen mode: 0x7faf31d08030 isBackBuffered: 1 numComp: 3 numDisp: 3

  30/04/16 11:03:47, com.apple.AmbientDisplayAgent [263 428]: substitutions of reading material for display 0x4280a40

  30/04/16 11:03:49, 487 WindowServer [194]: display connection received modified for display 0x4280a40

  30/04/16 11:03:49, 488 WindowServer [194]: found 27 modes for display 0x04280a40 [27, 0]

  30/04/16 11:03:49, 515 WindowServer [194]: display connection received modified for display 0x3f003d

  30/04/16 11:03:49, 516 WindowServer [194]: found 1 modes for display 0x003f003d [1, 0]

  30/04/16 11:03:49, 516 WindowServer [194]: display connection received modified for display 0x3f003e

  30/04/16 11:03:49, 517 WindowServer [194]: found 39 modes to show 0x003f003e [29, 5]

  30/04/16 11:03:49, 517 WindowServer [194]: display 0x003f003e changed status to online

  30/04/16 11:03:49, 522 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:49, 533 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:49, 548 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:49, 558 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:49, 572 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) (1440 x 900), 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:49, 572 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:49, 572 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2464, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:49, 572 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:49, 572 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2465,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:49, 572 WindowServer [194]: display 0x1b566b02: GL mask 0 x 4; limits (-1920, 0) [1920 x 1080], 39 modes

  Active, online, permits, seller 1e6d, model 59ac, S/N 0, unit 2, Rotation 0

  UUID 0xa9d58dbb699fa4f5a6b3759b4e69766d, space color {-206507792}

  30/04/16 11:03:49, com.apple.AmbientDisplayAgent [263 579]: CGSServiceForDisplayNumber: Invalid 0x1b566b02 to display

  30/04/16 11:03:49, 671 WindowServer [194]: display 0x04280a40: Unit 0: Mode 1680 x 1050, CGSThirtytwoBitColor, resolution 2, ioModeID 80007002, ioModeDepth, 0x0, IOReturn 0 x 0 x 0

  30/04/16 11:03:49, 692 WindowServer [194]: display 0x04280a40: Unit 0: Boot Mode 1680 x 1050, resolution 2 ioModeID 0 x 80007002, CGSThirtytwoBitColor, ioModeDepth, 0x0, IOReturn 0x0

  30/04/16 11:03:49, 692 WindowServer [194]: display 0x1b566b02: Unit 2: start-up Mode 1920 x 1080, resolution 1, ioModeID 0 x 80007000, CGSThirtytwoBitColor, ioModeDepth, 0x0, IOReturn 0x0

  30/04/16 11:03:49, 692 WindowServer [194]: CGXDisplaysDidReconfigure: display mode has changed

  30/04/16 11:03:49, 692 WindowServer [194]: CGXDisplaysDidReconfigure: added display

  30/04/16 11:03:49, 692 WindowServer [194]: CGXDisplaysDidReconfigure: removed display

  30/04/16 11:03:49, 700 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) [1680 x 1050], 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:49, 700 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:49, 700 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2817, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:49, 700 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:49, 700 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2818,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:49, 700 WindowServer [194]: display 0x1b566b02: GL mask 0 x 4; limits (-127,-1080 [1920 x 1080], 39 modes)

  Active, online, permits, seller 1e6d, model 59ac, S/N 0, unit 2, Rotation 0

  UUID 0xa9d58dbb699fa4f5a6b3759b4e69766d, space color {-206507792}

  30/04/16 11:03:49, 700 WindowServer [194]: _CGXGLDisplayContextForDisplayDevice: acquired display context (0x7faf31d0a1a0) - allowing to OpenGL

  30/04/16 11:03:49, 700 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:49, 704 WindowServer [194]: MPAccessSurfaceForDisplayDevice: implement the flip page on 0x04280a40 screen mode: 0x7faf31d08030 isBackBuffered: numComp 0: 1 numDisp: 3

  30/04/16 11:03:49, 711 WindowServer [194]: MPAccessSurfaceForDisplayDevice: implement the flip page on 0x1b566b02 screen mode: 0x7faf31d0a1a0 isBackBuffered: 1 numComp: 3 numDisp: 3

  30/04/16 11:03:50, WindowServer 238 [194]: display connection received modified for display 0x4280a40

  30/04/16 11:03:50, 239 WindowServer [194]: found 27 modes for display 0x04280a40 [27, 0]

  30/04/16 11:03:50, 265 WindowServer [194]: display connection received modified for display 0x3f003d

  30/04/16 11:03:50, 265 WindowServer [194]: found 1 modes for display 0x003f003d [1, 0]

  30/04/16 11:03:50, 265 WindowServer [194]: display connection received modified for display 0x1b566b02

  30/04/16 11:03:50, 265 WindowServer [194]: found 1 modes for display 0x1b566b02 [1, 0]

  30/04/16 11:03:50, 266 WindowServer [194]: display 0x1b566b02 changed state in offline mode

  30/04/16 11:03:50, 281 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) [1680 x 1050], 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:50, 281 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:50, 281 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2817, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:50, 281 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:50, 281 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2818,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:50, 281 WindowServer [194]: display 0x003f003e: GL mask 0 x 4; limits (-127,-1080 [1 x 1], 1 modes available)

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 2, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:50, com.apple.AmbientDisplayAgent [263 281]: substitutions of reading material for display 0x4280a40

  30/04/16 11:03:50, 281 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:50, quai 353 [298]: fatal server error, cannot create an id to display the uuid A9D58DBB-699F-A4F5-A6B3-759B4E69766D

  30/04/16 11:03:50, 369 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:50, quai 396 [298]: fatal server error, cannot create an id to display the uuid A9D58DBB-699F-A4F5-A6B3-759B4E69766D

  30/04/16 11:03:50, 418 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:50, DMProxy 431 [6311]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:50, DMProxy 445 [6313]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the "Simplenote' response has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x2e0d7, PID 5716)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the "SABnzbd' response has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0 x 27783, PID 4249)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): Timed out 0.250 second wait the answer of the "Microsoft Word" for synchronous notification type 100 (kCGSDisplayWillReconfigure) (0x1e65b, PID 3814 CID)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "iTunes" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x1f1d7, PID 2763)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Mail" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x1097f, PID 2720)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of "Dash" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (0x1eec3, PID 2354 CID)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Terminal" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x1a7bf, PID 2252)

  30/04/16 11:03:50, 534 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Preview" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x113eb, PID 1507)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Magnet" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x1c643, PID 1354)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Google Chrome" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x89f7, PID 1327)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Xcode" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0x11b7b, PID 1244)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "wing" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0 x 16803, PID 1235)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Spotify" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (CID 0 x 15327, PID 1225)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Dropbox" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (0x11a07, PID 380 CID)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "iStat Menus status' expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (0xd007, PID 362 CID)

  30/04/16 11:03:50, 538 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Finder" has expired for synchronous notification type 100 (kCGSDisplayWillReconfigure) (0xe103, PID 300 CID)

  30/04/16 11:03:50, 818 WindowServer [194]: CGError post_notification (const CGSNotificationType, void * size_t const, const, const bool, const CGSRealTimeDelta, const int, const CGSConnectionID * pid_t const, const): 0.250 second wait the answer of the "Notification Center" has expired for synchronous notification type 109 (< unknown >) (0xcc07, PID 346 CID)

  30/04/16 11:03:51, 009 WindowServer [194]: display 0x04280a40: Unit 0: Mode 1440 x 900, CGSThirtytwoBitColor, resolution 2, ioModeID 80001003, ioModeDepth, 0x0, IOReturn 0 x 0 x 0

  30/04/16 11:03:51, 013 WindowServer [194]: display 0x04280a40: Unit 0: Start Mode 1440 x 900, CGSThirtytwoBitColor, resolution 2, ioModeID 0 x 80001003, ioModeDepth, 0x0, IOReturn 0x0

  30/04/16 11:03:51, 013 WindowServer [194]: CGXDisplaysDidReconfigure: display mode has changed

  30/04/16 11:03:51, 014 WindowServer [194]: CGXDisplaysDidReconfigure: added display

  30/04/16 11:03:51, 014 WindowServer [194]: CGXDisplaysDidReconfigure: removed display

  30/04/16 11:03:51, 016 WindowServer [194]: display 0x04280a40: GL mask 0 x 1; limits (0, 0) (1440 x 900), 27 modes available

  Main asset, online, active, integrated, boot, OpenGL-accel, seller 610, model a029, S/N, 0, 0 unit, Rotation 0

  UUID 0xe5e926ffff838251e163d61f52faa3e5, space color {-1979123537}

  30/04/16 11:03:51, 016 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:51, 016 WindowServer [194]: display 0x003f003f: mask GL 0x8; limits (2464, 0) [1 x 1], 2 modes available

  offline, enabled, OpenGL-accel, seller ffffffff, model ffffffff ffffffff S/N, unit 3, Rotation 0

  UUID 0XFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF

  30/04/16 11:03:51, 016 WindowServer [194]: GLCompositor: GL renderer id 0 x 01024506, mask GL 0x0000000f, Accelerator 0x00003ca3, unit 0, caps QEX | MIPMAP, 1536 MB vram

  texture max 16384, max {16384, 16384} viewport, NPOT extensions | GLSL | FLOAT

  30/04/16 11:03:51, 016 WindowServer [194]: display 0x003f003d: mask GL 0x2; limits (2465,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 1 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:51, 016 WindowServer [194]: display 0x003f003e: GL mask 0 x 4; limits (2466,-1080 [1 x 1], 1 modes available)

  offline, activated, seller ffffffff, model ffffffff, ffffffff, unit 2 S/N, Rotation 0

  UUID 0xffffffffffffffffffffffffffffffff, space color {-206507792}

  30/04/16 11:03:51, quai 017 [298]: CGSCopyDisplayUUID: Invalid 0x1b566b02 to display

  30/04/16 11:03:51, quai 018 [298]: uuid_callback_master: impossible to extract the UUID for display 0x1b566b02 (1001) (invariant failure)

  30/04/16 11:03:51, 022 WindowServer [194]: MPAccessSurfaceForDisplayDevice: implement the flip page on 0x04280a40 screen mode: 0x7faf31d08030 isBackBuffered: 1 numComp: 3 numDisp: 3

  30/04/16 11:03:51, com.apple.AmbientDisplayAgent [263 077]: substitutions of reading material for display 0x4280a40

  30/04/16 11:03:51, 516 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:51, 524 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:51, 534 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:51, 542 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:51, 677 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:51, 686 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:51, 694 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:51, 702 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:51, 764 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:51, 901 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:51, 982 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:52, 045 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:52, DMProxy 051 [6315]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:52, DMProxy 061 [6317]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:52, DMProxy 068 [6319]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:52, DMProxy 076 [6321]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:52, 267 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - discovered

  30/04/16 11:03:52, 273 WindowServer [194]: * DMPROXY * (2) found "/ System/Library/CoreServices/DMProxy. Run with arg = - AMBDprefs

  30/04/16 11:03:52, 301 WindowServer [194]: CGXSetDisplayColorProfileAndTransfer: display 0x04280a40: Unit 0; ColorProfile {-1979123537}; TransferFormula (1.000000, 1.000000 1.000000)

  30/04/16 11:03:52, DMProxy 327 [6323]: AMBD Services: _CFXPCCreateXPCObjectFromCFObject failed!

  30/04/16 11:03:53, 000 kernel [0]: his assertion in AppleHDAController on line 3033

  30/04/16 11:03:53, 000 kernel [0]: his assertion in AppleHDAController on line 3033

  Allright, nevermind, past the HDMI cable and the problem disappeared... Do not know if I should be happy or sad...

• x 64 (64-bit) bug in the C API

  I try to get the C API of 64-bit running.  I have the 32-bit running API, and it is not working properly.  It seems that no API call in the 64-bit environment, which returns more than a single data type replaces a box of memory it does not.

  I work in VB.NET and enveloping with a marshaling calls.  The simplest example of a call that is not working properly is querying the active channels on the scope:

  C header:

  niVB_Status NIVB_DECL (niVB_MSO_QueryEnabledAnalogChannels)
  niVB_MSO_InstrumentHandle instrumentHandle,
  char * channels.
  size_t channelsSize,
  size_t * channelsSizeOut);

  There are several different ways to encode a managed, unmanaged for this translation.  First is to use an allocation to build a pointer on a buffer zone:

  Pointer = Marshal.AllocHGlobal (MAX_CSTRING_LENGTH)

  Then, the declaration looks like this:

  _
  Public Shared Function niVB_MSO_QueryEnabledAnalogChannels_64 (ByVal instrumentHandle As Integer, ByVal channel As Integer, ByVal channelsSize As UInteger, ByRef channelsSizeOut As UInteger) as niVB_Status
  End Function

  When the call is made, the call to channelsSizeOut returns 23 characters (which is correct).  Channels IntPtr is however cancelled (this should never happen, he suggests that the battery is getting damaged.)  If I put a very wide range locally around the pointer, sometimes it is not damaged.

  Or you can call the function by using a call to stringbuilder.  Basically, it replaces the IntPtr parameter with a string generator using marshaling for a pointer:

  Dim bufChannels As New StringBuilder (MAX_CSTRING_LENGTH)

  then the call looks like this:

  _
  Public Shared Function niVB_MSO_QueryEnabledAnalogChannels_64 (ByVal instrumentHandle As IntPtr, ByVal channel As StringBuilder, ByVal channelsSize As UInteger, ByRef channelsSizeOut As UInteger) as niVB_Status
  End Function

  Yet once, calling this function causes the stringbuilder class being together (Nothing), which is essentially showing that stack space where is the pointer to the StringBuilder is getting damaged.

  It is important to note that this code works perfectly with the 32-bit version of the DLL (with a programming construct).

  I don't think it's a bug in the C API; I can do the following for both x 86 and x 64 without triggering of MSVC stack Canaries. (Note that for brevity, it does no checking error in this code snippet.)

  #include
  #include
  #include ' nivirtualbench/nivirtualbench.h '.

  int main (int argc, char * argv)

  {

  niVB_LibraryHandle libHandle = NULL;

  niVB_MSO_InstrumentHandle msoHandle = NULL;

  size_t channelsSizeOut = 0;

  char * enabledChannels = NULL;

  niVB_Initialize (NIVB_LIBRARY_VERSION & libHandle);

  niVB_MSO_Initialize (libHandle, "brandonbench", false, & msoHandle);

  niVB_MSO_QueryEnabledAnalogChannels (msoHandle, NULL, 0, & channelsSizeOut);

  enabledChannels = (char *) calloc (channelsSizeOut, sizeof;

  niVB_MSO_QueryEnabledAnalogChannels (msoHandle, enabledChannels, channelsSizeOut, & channelsSizeOut);

  printf ("permit to channels: %s\n", enabledChannels);

  Free (enabledChannels);

  niVB_MSO_Close (msoHandle);

  niVB_Finalize (libHandle);

  }

  I suspect that the problem is in your marshaling. Size_t parameters are probably better represented using System.UIntPtr and not the type UInteger; size_t is 32-bit on 32-bit platform and 64 bits on 64-bit platforms, but UIntegers are 32-bit at a time. Try to write channelsSizeOut, it's probably what is triggering the corruption of the stack.

• CNVString - send strings of a PXI chassis by ethernet to an application of labWindows on another computer

  I have a PXI chassis with a PXI-8101 controller. It is equipped with a system of operating in real time. I connect to it on a PC with a Windows operating system. I am trying to send my PXI system variable length string messages to my PC.

  On the PC, I have a LabWindows application that allows you to send and receive data with the PXI system. I'm trying to send the PXI system error messages to the PC on ethernet. I am able to send digital data between them, but not the string messages. The PXI software meets the CNVCreateArrayDataValue() function call and not to her, but never returns. There only have this problem when the CNVDataType parameter is CNVString; When I change the CNVDataType to CNVBool it doesn't have this problem. I'm new on this time real PXI so would appreciate the help. Here is the code on my PXI system that sends these text messages.

  At the beginning of the RTMain, I create the writer

  CNVCreateBufferedWriter ("\\\localhost\\system\\" REG_CAL_ERROR_STRING, 0, 0, 0, 64, 5000, 0, & gErrorPublisher);

  Then I call a function with a string in the list of parameters:

  void SendRT_ErrorMessage (char * message)

  {

  Data CNVData = 0;

  int error;

  error_str char [256];

  int i;

  char out_str [ERROR_STRN_SIZE * 4];

  strcpy (out_str, message);

  size_t arrayDims = ERROR_STRN_SIZE;

  arrayDims = strlen (message) + 1;

  error = CNVCreateArrayDataValue (& data, CNVString, out_str, 1, & arrayDims);

  If (error<>

  {

  strncpy (error_str, CNVGetErrorDescription (error), 256);

  }

  CNVPutDataInBuffer (gErrorPublisher, data, 1000);

  CNVSetArrayDataValue (data, CNVString, out_str, 1, & arrayDims);

  CNVPutDataInBuffer (gErrorPublisher, data, 1000);

  CNVDisposeData (data);

  }

  Change this:

  public static void CVICALLBACK ErrorMessageCallback(void * handle, CNVData data, void * callbackData)
  
  {
  
   char message [ERROR_STRN_SIZE];
  
  CNVGetScalarDataValue (data, CNVString, & message);
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, "got something\n");
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, message);
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, "\n");
  CNVDisposeData (data);
  }

  To do this:

  public static void CVICALLBACK ErrorMessageCallback(void * handle, CNVData data, void * callbackData)
  
  {
  
   char * message;
  
  CNVGetScalarDataValue (data, CNVString, & message);
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, "got something\n");
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, message);
  
   (void) SetCtrlVal (panelHandle, PANEL_TEXTBOX_DEBUG_MSG, "\n");
  CNVDisposeData (data);
  }

  You also need to add CNVFreeMemory to free the memory allocated for the string.

• LabVIEW MoveBlock and obtaining of a string from a DLL (assigned by the DLL)

  Hello classmates addicted LabVIEW,.

  I have a small question about the LabVIEW MoveBlock function.

  For a project I need to use an external DLL that must be called by my LabVIEW program.

  Essentially, the DLL returns a void * to a buffer and the size of the buffer (size_t). This stamp is just the string being returned by the DLL data. The DLL allocates these data and later in the program that I need to pass this pointer to a second function of the DLL to explicitly inform the DLL that I made using the data, so it can release these data.

  Here is the documentation for the function I want to use:

  Since you say the works of XNode, then you're dealing with a pointer and not a handle (pointer to a pointer), so you should be to pass the address of MoveBlock by value and not as a pointer to a value.