LabWindows/CVI Idea Exchange

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Make cvi.exe a 64 bit application

It appears that cvi.exe can run into serious memory problems for larger projects due to a memory-hungry generation of source code browse information.

The solutions suggested (* don't generate browse information for larger projects or * don't use larger projects) are not too helpful. In my opinion, a much better solution would be to provide cvi.exe as a 64 bit application.

Because a crashing CVI is a serious limitation I hope this wish will make it soon.

Thanks...

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Process System Events callback

Hi,

in many of my applications, I have to verifiy some conditions recursively and they can generate an error, for example when checking the presence of a file (see below).

Imagine to have a task doing this control and imagine the task is scheduled every 5 seconds or less.

This means you'll get the popup window continuosly and it makes almost impossible to debug your code.

I know I can reduce the Debugging level from Extended or Standard to No RunTime Checking in order to block that popup window, but sometime I need a deeper level of debug to fix my problems.

What do you think about adding a third button to ignore, for the current debugging session only, the run time errors generated from the same instruction in the same thread?

More, what do you think about adding a fourth button to ignore, for the current debugging session only, the run time errors of the same type?

Regards

Sergio

Hi,

in many of my applications, I have to verifiy some conditions recursively and they can generate an error, for example when checking the presence of a file (see below).

Imagine to have a task doing this, and imagine the task is scheduled every 5 seconds or less.

This means you'll get the popup window continuosly and it makes almost impossible to debug your code.

I know I can reduce the Debugging level from Extended or Standard to No RunTime Checking in order to block that popup window, but sometime I need a deeper level of debug to fix my problems.

What do you think about adding a third button to ignore, for the current debugging session only, the run time errors generated from the same instruction?

More, what do you think about adding a fourth button to ignore, for the current debugging session only, the run time errors of the same type?

Regards

Sergio

GetCVIVersionEx

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Tables are often used to display test results organized in columns, which means the user very often has to search a particular column for a specific value. At present the "search vertically" checkbox is not checked by default in Find in Table Cells dialog, which means the user has to explicitly select it otherwise the search could locate the wrong cell.

What I would like to have is the ability to programmatically set the relevant default options on the dialog before it is shown. With this I mean:

Show/Hide/Dim some elements
Preset some value (like checking the Search Vertically option)

( Tested with CVI 2012SP1. Not yet installed 2013 )

Hi. I find occasionally that it would be handy to be able to add items to the event que through the debugger. Like, for example, to call a callback function as if the user had interacted with the user interface. This would be especially handy for remote debugging, where I could add in an item in the que as if a button had been pushed on the user interface without having to physically walk over to the debuggee and push the button on the screen. I'm not sure the best way to implement this, and I can picture some pretty sophisticated interfaces. However, something simple could be perhaps a screen like the function panel for CallCtrlCallback(...) where I could enter in the Panel handle, Control ID, Event, etc. and have the event added to the event que? Thanks.

Fix 'Busy Wait'

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CVI Application start as service

In this thread it has been discussed how PlotScaledIntensity() handles NAN values.

In CVI 2010 SP1 NAN values are plotted with the center-scale color (and this is a bug).

Unfortunately the fix is not easy, and there could be different ideas on how NAN values should be handled.

I suggest not to plot NAN values, or to plot them transparent so that the plot area size is visible under NAN pixels.

When you use NAN values in PlotY(), for example, this points are not plotted.

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I am feeling that LabWindows/CVI lacks a feature that leads to confusion and to minor lack of productivity. When opening the Project File from Windows Explorer or another manager, CVI will start and open that particular project. However, if an instance of CVI is currently running, it will close the project that’s opened and open up the new project. This doesn’t seem right. Let’s say your’re working on a project and you want to open a reference project or an example from ‚Samples’ in order to find some information. Your project automatically closes and you must open it again. You have to search the project on the disk and wait for it to load each time you want to look for something in another project. But you only want to take a look at that example (or reference project), you don’t want to work on it! A workaround exists: open up an instance of LabWindows/CVI and then open your second project. And you must do that for each supplementary project you want to open, while not losing you project of interest.

The feature I think should be implemented would allow the following behavior: when opening a project, LabWindows/CVI will check to see if that project is opened in one of its running instances. If it is, that particular instance is brought into view. If it isn’t, a new instance of LabWindows/CVI will be started and the project will be opened. That way you reduce waiting times (especially when a big project is involved in this switch) and increase productivity.

Hi,

following the discussion here it turns out that at present there is some ambiguity in using the taskbar button of applications created with CVI: Clicking on the taskbar button gives the visual impression of minimizing all panels of the application, in fact the panels are just hidden, not minimized. As a result, the application will behave differently if you really minimize panels using the _ panel button, or if you hide the panels by clicking on the taskbar. In the latter case the new EVENT_PANEL_MINIMIZE event does not get triggered and the application cannnot know that all panels are hidden (for the user appearing to be minimized). Hence this new event is required to complement this functionality.

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Hello,

Right now, the Break on»Library Errors function break happens for all library errors. I would like to suggest a more granular setting, i.e. break on file I/O errors, math errors, etc.

An additional (and most relevant) feature I suggest is the option to allow to temporarily exclude certain errors; let's say I have a loop doing some calculations and these calculations result in an ERANGE error, then it would be useful to get notified by the debugger, but only once for this loop, not 500 times... Hence after a break on library error I would like to have the (right click) option 'exclude further breaks of this function'. This should be valid for the current execution and be automatically reset when the program is restarted.

Also, the menu command should provide the possibility to override all SetBreakOnLibraryError functions.

Many thanks!

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After doing Find operation,Discard find results on next compile.

We do find operation lots of time and we see its find results below.

In same result area, we also see error and other messages.

But once we do find operation its results are retained till we close project.

Its actually confusing for programmer,when he compile he feels that there is error.It should be discarded on next compilation.It has no use once user see find result.So it should be discarded.

CVI Lizenz

Wenn ein Rechner nicht am Nezt ist, vielleicht das Kabel nicht richtig drin oder am Platz kein Netz mehr frei ist, dann wird CVI mit einer eingeeschränkten Testlizenz gestartet und würde dann eine EXE generieren, welche in der Laufzeit eingeschränkt ist. Oft ist es der Fall, dass jemand CVI ohne Netzt started um im Quelltext etwas zu kontrollieren. Zu einem späteren Zeitpunkt erstellt jemand eine EXE neu und bemerkt nicht, dass das gestartete CVI keine Lizenz hat, obwohl der Rechner Netz hat. Er müsste erst CVI neustarten um die Lizenz zu holen.
Den Fehler bemerkt er erst am Folgetag, wo das Programm mit einem Fehler abgebrochen wird.
Es wäre aus meiner Sicht sehr sinnvoll, dass eine EXE, welche durch CVI ohne Lizenz erstellt wird, auch einen Popup mit eingebaut bekommt, welcher hiervor warnt.
Auch eine Abfrage, welche der Progrmmierer in sein Programm einbauen kann wäre sehr Hilfreich.

Smarter (or correct) EVENT_VAL_CHANGED

Hello,

I just discovered a strange and unexpected behavior of EVENT_VAL_CHANGED which requires that I will have to double check all my previous software written in CVI...

For some reason I have assumed that if the EVENT_VAL_CHANGED is triggered on a numeric control the new value will be different from the old one. This may not be true - the value may be still the same!

Since for more experienced users this seems to be a well-known fact I doubt that NI will call it a bug, hence I am suggesting an improved behavior : Please, for numeric controls, fire the EVENT_VAL_CHANGED event only if the numeric value has changed...

(Right now, if the numeric control displays 1.0000 and I enter '1 ENTER' the value remains the same (at least), but the EVENT_VAL_CHANGED event is triggered...)

Thanks

PS: Also the documentation seems to be misleading: It (in CVI2010) states:

The EVENT_VAL_CHANGED event is generated continuously while the user is performing an ongoing action which results in the value of a control changing.

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CVI Service API

Summary:

Implement CVI Service API for creating and managing Windows Services (and Unix daemons).

Description:

Add specialized CVI functions that users can use for creating, installing and managing the entire life-cycle of long-running user services.

Users can thus have a more uniform interface to the system service API and benefit from a higher level of abstraction across multiple platforms (Windows vs. Unix). These services can contain user code for various tasks, that are running in the background.

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LabWindows/CVI Idea Exchange

Update Microsoft Windows SDK support from 8.1 to 10

Make cvi.exe a 64 bit application

Process System Events callback

Avoiding recursive warnings while debugging

Avoiding recursive warnings while debugging

GetCVIVersionEx

Ability to customize "Find in Table Cells" dialog

Ability to add events to the event que while debugging.

Add Column Attribute To Set Column Width In Percent (Proportion)

Fix 'Busy Wait'

CVI Application start as service

Handling of NAN values in PlotScaledIntensity()

Opening Multiple Instances When Launching Different Project (.prj) Files

EVENT_APPLICATION_MINIMIZE

Provide enhanced Run»Break on»Library Errors

After doing Find operation,Discard find results on next compile.

CVI Lizenz

Smarter (or correct) EVENT_VAL_CHANGED

CVI Service API

Add callback events for MultiTouch Capabilities in Windows 7 to LabWindows/CVI