dadreamer

This is possible, but totally unreliable. The Color Picker code changes the colors of the cosmetic, that is a part of the FP object (the Blinking property does that too). VI Scripting doesn't provide a way to obtain the ref's to the cosmetic. Ok, we could use that Refnum to Pointer trick to get the object's data space pointer, but we can't go further without using constant offsets. First, we need to find the cosmetic address, second, we need to find the colors addresses. Having those we could read out the colors. It would work only if the object data space structure does not change. But it is known to change with a 100% guarantee between different LabVIEW versions (incl. patches and service packs), RTE's, bitnesses, platforms, sun and moon phases or whatever. Besides, you would have to adapt that hacky technique between the objects with different types (such as Color Box and Boolean), because their data spaces are different and the offsets wouldn't work anymore. Due to that I personally dislike to base software on internal tricks. It's often unstable and very difficult to support. There exists an easier and documented way to get the color while the Picker is on. Just grab the object picture with the Get Image method and compare it against some initial picture to determine whether the changes are in effect.

Even though this Color Picker window is created by the OS API, it does not expose any properties or methods to the programmer. All the window handling is done in the LV core entirely. I won't suggest using ChooseColor or its .NET wrapper as I'm pretty unsure how to accomplish the task of mouse tracking there (maybe LPCCHOOKPROC callback function could be of some use, but it would require writing a DLL anyway). It would be much easier to create your own color picker SubVI with some means of interaction with the main VI. You can find some color chooser examples on NI forums, e.g. this one.

I believe it is, at least for desktop platforms. Given the pointer that ArrayMemInfo outputs, I can subtract 4 bytes (for 1D array of U32) or 8 bytes (for 2D array of U32) from it and do DSRecoverHandle, that gives a valid handle. I can even get its size with DSGetHandleSize and it will correspond to the array size that was passed to the ArrayMemInfo (plus N I32-sized fields, where N is the number of the array dimensions). According to the doc's such as Using External Code in LabVIEW handles are relocatable and contiguous. Of course, Rolf could add more here. @Neil Pate If you wonder what that wrapper trick is, check this post. Using those tokens you could somewhat enhance your CLF Nodes and reduce time spent on each call.

@Neil Pate As I can see, your pointer maths are okay, as long as you provide valid coordinates in Point 1 and Point 2 parameters. Thanks to @ShaunR it appears, that ArrayMemInfo has a bug, that's reproduced in 64-bit LabVIEW. I couldn't reproduce it in 32-bit LabVIEW though. The stride should not be zero, unless the array is empty, no matter if subarray or not. But even when the stride is 0, it shouldn't lead to crash, because in this case we're just writing into row 0 instead of intended one. To eliminate the bug influence (if any), you might not use the stride of ArrayMemInfo node, but use (Array Width x 4) instead as it's a constant in your case.

As I wrote here, ArrayMemInfo node was introduced only in 2017 version. It just didn't exist in 2015. That's why it crashes. After a quick test in 2022 Q3 MoveBlock didn't crash my LV. Gonna get a closer look at the code tomorrow.

Of course, you can. 🙂

Each time a library function wants a struct pointer as an input parameter, you should pass it as Adapt to Type -> Handles by Value. In this case LabVIEW provides a pointer to the structure (cluster). If the struct is very complex (not in your case) it's possible to pass a (prearranged) pointer as an Unsigned Pointer-Sized Integer and take it apart after the call with MoveBlock function. I see some inconsistencies in your struct declaration and the cluster on the diagram. The second field should be triggerCount, but the cluster has it named as triggerindices. The same for the third field: triggerIndices -> ListTI. Might be a naming issue only. Then which representation does that array have? If there are common double values, it's enough to allocate 8*100 bytes of memory. Of course, you may make some memory margin and it's not doing any bad, except taking an extra space in RAM. After the IQSTREAM_GetIQData call you likely want to extract the array data into a LabVIEW array, so before doing DSDisposePtr you would call MoveBlock to transfer the data. Also an important note: Unsigned Pointer-sized Integers are always represented as U64 numbers on the diagram. So if you are working in 32-bit LabVIEW, you should cast it to U32 explicitly before building a cluster. It's even better to make a Conditional Disable Structure with two cases for 32-bits and 64-bits, where a pointer field would be an U32 or U64 number respectively.

@mcduffDone. It's very limited example though as I don't have the OP's SDK and no VIs were posted to tinker with.

You can deal with pointers in LabVIEW with the help of Memory Manager and its functions. Just create an allocated pointer of 8 bytes (size of DBL) with DSNewPtr / DSNewPClr, build your cluster using that and pass it to the DLL. Don't forget to free the pointer in the end with DSDisposePtr. DSNewPtr-DSDisposePtr.vi upd: Seems like I've read it diagonally. Now I see you need a pointer to an array of doubles. So you'd allocate a space in memory large enough to hold all the doubles (not 8 bytes, but 8 x Array Size, i.e. 8 x lNumberDiodes). After the function call you'll need to read the data out of the pointer with MoveBlock function.

Tried that. 2009 is the latest version where the GSW has not been packed yet (lvlib). I have slightly reworked that window to satisfy my preferences (dark mode etc.) and used it for 2020 and 2021 versions. But in 2022 Q3 something has changed in the underlying C code, that's supporting the behaviour of the GSW and due to that my modded GSW stopped working normally. I've applied few workarounds but still there are some quirks. Besides that '09 GSW is too ascetic, maybe I could remake it more extensively, but I decided to leave it as is.

I got used to almost everything in modern LabVIEW, but these two are driving me nuts. - "new styled" bright white splash screen and GSW (Getting Started Window) (since LV 2021 and up); - online help in LabVIEW 2022 Q3 (and probably up?).

Yes. Also stays (and works) in RTE, when the VI is compiled. Also works if saved for previous down to LV 8.0. In fact LV 8.0 didn't have that token in its exe code, but the call remained inlined. LV 8.6 had that token, so confirmed it there as well.

I meant these ini tokens.

You can squeeze some more time out of the MoveBlock without wrapper generation.

Yeah, it would be nice to finally see those mysterious tokens to confirm or refute our guesses 🙂

Took some time to find this old thread in the Wayback Engine, but here it is: http://web.archive.org/web/20080315135806/http://forums.lavag.org/Comments-in-Configuration-Files-t9183.html&mode=linear You want the "read_configuration_data.vi ( 78.66K )" attachment.

Missing no more.

Generally I agree with Rolf here. That ArrayMemInfo node even though looks neat and easy-to-use could easily be removed in the future versions of LabVIEW as it's for internal use only. NI has already removed many undocumented or obsoleted stuff from the core of LV 2022, including all the NXG helper functions like that NCGGetOperateDataPointer. If it goes to production, I'd prefer conventional Memory Manager functions like DSNewPtr and friends.

Selecting this context menu entry opens the browser and displays this page. No more built-in help?.. If so, I assume they didn't fill all the documents yet.

2022 Q3 is already available for download from NI website. All the three OS'es are in place and the Community edition too. Not touching the subscription issues, nobody stops me from using a trial and during that time I could specify "2022" in my profile 🙂

What about 2022? I suppose expect it being out soon. I've seen some guys are using 2022 Beta meantime.

Why do you use Read from Text File VI instead of Read from Binary File VI? Read from Text File VI does End-Of-Line chars conversion by default. It could be disabled in the RMB context menu of the node.

Windows Imaging Component already has native bitmap decoder for BMP format, that works "out-of-box". So why reinvent all that from the scratch? Of course, there would be a reason, if we were on Linux or macOS. As it's about Windows only, then the WinAPI decoder should be already optimized to process the formats fast enough. I doubt it would be worse in performance than the LabVIEW built-in instruments.

It was a project with MOXA video server, that was digitalizing an analog video signal and outputting it each 25 to 30 frames per second. That SDK was providing only a JPEG stream, hence I had to use some helper decoder of mine. Later we switched to another video server, that was able to output in many other formats besides, including a RTSP one. There exists one more way to make the CLFNs run in the same thread and stay in 'any thread' all the time. I recall that I was having some thread unsafe DLL, that I wanted to use in my project, but I absolutely didn't want it to run in UI thread. Then I used Timed Loop for that and it worked like a charm. But I have never dug those built-in XNodes deep enough to see, how they work internally.

Remove this and try again. I think, if your memory stays on nearly the same level (say, 180 MB) for a few hours and does not jump high drastically, then no need to worry.