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ExcelReportDemo Sample Project Question: Defaults to Sheet 4

Hello Labwindows Community, I wanted to understand the project, "Excelreportdemo" in CVI2012\samples\activex\excel\excelreportdemo.prj. Something that I couldn't understand is when I run the GUI, it...

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USB 3.0 problems

This may be an odd issue, but I have a Labwindows application that runs with the cDAQ-9174 over USB.  It works on a 2 year old Dell Inspiron laptop (Windows 10) and a Dell OptiPlex desktop (also...

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Error undefined symbol '_CVI_GetFileSize@8' when trying to create DLL from...

Hi all,I am trying to create 64-bit DLL for the driver of a device so that I can use it in LabVIEW 2014 64-bit. The information for the instrument is as follows: instrument: Rohde & Schwartz...

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beginners A/D examples

Where can I find basic Labwindows example programs for A/D data acquisition?  All the examples I find are for Labview.

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CVI 2017 crash

Havnt used CVI in 10 years.  Updated to CVI 2017.  It crashes (CVI closes itself) when I try to load in example programs.  Dont have renewed service contract yet, but should be soon.

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LabVIEW call CVI daisy chained DLL fail

Hi    Daisy chained DLL: DLL A and DLL B, DLL A use LoadLibrary to load DLL B.   I have created a dll in Labwindows CVI. In this dll I dynamically call another dll using LoadLibrary function. This dll...

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Value is invalid or out of range

Hi, I have a problem during craeting bitmap. I receive NON_FATAL RUN_TIME ERROR that says "Value is invalid or out of range". At first I tried to use 24 bits pixel depth but I decreased it to 8 because...

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CVI using SCC agent SVN : files are not in read only at first use

Hello all, For versioning, I'm trying to use agent SVN with CVI.This seems to work fine for creating a project. The point is that, at first opening of any file, without checking-out any file, I can...

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the function CA_VariantClear() spend too much time

when i use the function:HRESULT CVIFUNC ExcelRpt_GetRangeDataType(CAObjHandle worksheetHandle, const char *cellRange,enum ExREnum_ExDataType *dataType)when cellRange is D2:F510000 ,i found it spend too...

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https://youtu.be/j2wy3-ZvvGM

There has been a lot in the media about the benefits of drinking green tea and oolong tea when trying to lose weight. Oatmeal: It's fiber-rich and provides that full feeling lasting long past the...

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strtok function returns NULL value

I am using Labwindows CVI to use a experimental equipment. And I made a code but there is a error.treadbuff value is 0x06818A30 "" However, strtok function returns NULL value so error happens in the...

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Cannot read data from keithley 6485

I am programming with labwindows to control keithley 6485. However, READ?\n command does not work at all. That command only works after I reset the keithley 6485 by *RST\n command. If I change some...

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Creating Classes Example Code.

Greetings: I am new to LabWindows and want to create my own classes for instrument drivers.I have the manual with SCPI commands that are available so would like to have functions where setvoltage(),...

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CVI 2019

Although not yet announced here in the forum, CVI 2019 has been released. I installed it on my office computer and wanted to share my experience with you and NI:Installation:I was unhappy about the...

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How: Different external lib files for debug/release CVI builds?

Hello.I need to switch linking external .lib files depending on the debug/release build.How to do it using NI CVI 2012 and/or 2017?   

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Where linker settings?

I have problems with linking.1. Where are the linker settings using NI CVI 2012 and/or 2017?2. How to get extended messages from the linker, like microsoft linker / VERBOSE flag?

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Debugger hangs.

Hello.CVI2017 debugger hangs on function H264_DVR_Init() for long time when I run debugging  debug.exe process eats more than 20% cpu time.The same project under CVI2012 runs debugger normally.What is...

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Correct pointer types for multithreading?

Dear CVI community, I would like to modify an existing function, called “Scan_Diode_Array” to use the multithreading capabilities in CVI. My naïve solution results in an error and I am quite sure that...

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Moving or creating LabWindows CVI project in Visual Studio problem

Hello. I would like to convert my project in LabWIndows CVI to VisualStudio project. I followed the instruction and after I create new CVI project in VS or when I choose to convert the project in the...

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CVI 2019 Debug 64 bit error "_ExtractParamInfo" could not be found

Just migrated code from my development computer (CVI 2017 W10) to my laptop (CVI 2109 W7 SP2).I should mention that this a new install on CVI2019 from the beta. Release64 compiles, launches, and runs...

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