CVI installer pop-up error while launching CVI application
Hi, I have Lab windows CVI 2010, recently I was installing CVI 7.1.1 but aborted in the middle before installation can complete. Now every time when I launch CVI 2010 the installer for CVI 7.1.1 is...
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question about the "OpenCom()"
首先，当用USB转串口线连接好STM32开发板和PC后，此时STM32是正常工作的，当打开我用CVI编写的串口测试软件后，我点击“搜索串口”控件（里面就只有一个OpenCom(5,"")函数），此时发现STM32开发板出现非正常状态，就像一直在复位一样。但是并没有复位，因为RESET引脚是高电平状态。我怀疑，是不是OpenCom()函数背后究竟做了些什么？ i have a problem.i...
View Article"Library not registered": spurious message?
Hi all, I just noticed an apparently spurious message when using FileSelectPopupEx() function (CVI 2017).It appears in Debug Output panel:...
View ArticleHow to set the coupling mode in the PXI4464 module.
Hello guys.In order to perform voltage measurements with the PXI4464, I am writing a code in C using the LabWindows.In a simple way, I have created the Task, the Voltage Channel and set the Timing. To...
View ArticleOpenGL and zoom with mouse wheel
Hi, I would like to use the mouse wheel to zoom in and out on an OpenGL graph.It looks like the OpenGL control doesn't trigger the EVENT_MOUSE_WHEEL_SCROLL. I have added the EVENT_MOUSE_WHEEL_SCROLL to...
View Articlequestion about ComRd()
i found the function ComRd() in manual.int ComRd(int PortNumber,char buff[],size_t count)my question is :if the amount of characters in the input queue of the port is less than "count" specified in...
View ArticleCVI dll not working with all CVI programs
Hello, I developed some DLLs for my functionality in labwindows CVI. Also I made a test program for those DLLs in CVI , linked and it worked as desired. But when I integrate the same DLLs in to...
View ArticleVision Assistant generated C code
Dear All,I would like to use Vision Assistant and CVI for Particle Analysis.I have ImageProcessing.h and ImageProcessing.c files automaticallycreated by Vision Assistant.How can I achieve particle...
View ArticlePXI4464 - Frequency measurement
Hi guys. Do you know if it is possible to measure frequency using the PXI4464 module? If so, should I do this with the DAQmx library?I have been trying using the function DAQmxCreateAIFreqVoltageChan...
View ArticlePassing Strings from Lab Windows/CVI dll function to VB6
Hello , How can I pass a String caracters from CVI DLL to VB6I know it can be tricky to pass a string fromthe DLL to VBI am blocked there... thanks in advance
View ArticleControl Array example clarification...
Hello, This might be an elementary question, but I just stumpled upon the 'ledctrlarray' example in LabWindows/CVI. My issue: I dont' see the linkage between the 'CTRLARRAY' and all the LED controls on...
View ArticleCheckboxes in a non-editable tree
Hello everyone, I want to have a column in a tree that only has a checkbox on each line. I read that in order for the users to be able to interact with the checkbox, I have to set the tree's...
View Articleabout Callback function
can Callback functions be called from other personal defined normal functions?example:COMMAND Control, its Callback function is cmd();and i have other normal function named display();so, in...
View ArticleError 0xc0000005
Hello, I ununistall all NI software from my PC.I try to reinstall CVI , the instalation is OK.The problem is while running .exe i have an error with this code 0xc0000005 and nothing run.I try to...
View ArticleCalibration system (PXI4464)
Hello guys. I am using the PXI4464 to perform voltage measurements. On the future, this equipment will be used to take some voltage samples from another device, and it will be enclosed (without access...
View ArticleCVI 2015f1 GUI Localization Utility for Russian
While tabs and control labels appear properly expressed in Russian at run-time, the Main Panel title of the application appears mangled. On reload of the .lwl file into the utility, all translations...
View ArticleUSB Event
Hello Everybody,I am attempting to set up events for a change in the USB state. The event fires, but there is no change in the parameters. lParam and wParam are always the same value regardless of an...
View ArticleWhy does NI Update Service not support NI-Serial?
NI Update service shows available updates of GPIB, CAN, DAQ... drivers but for some reason not any updates of NI serial I am referring to the latest NI update service 16.0.0.33 aka 16.0.1. Although...
View ArticleImage processing
Hello ,I want to create a program that process an image. My main goal is to take a hazy picture and make it sharper.Any ideas how can i perform it?I'm familiar with the software but not an expert, so...
View ArticleCode Analyzer for labwindows
Hello ..... My question is , as we use cpp check to analyze C/C++ code....is their any tool available by national instruments or by other company to analyze code written in labwindows... Regards,SA
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