DLL from the Windows API (user32.dll) causes a fatal error

Hello
On installation, we using a touch screen. LabView software is running in full-screen. I need to deactivage my Panel before if the screen saver is to warn the user start anyting. I use user32.dll SystemParametersInfoA and it works well, except, if I left the software. "myexe a fin a mistake and should be closed" (something like that my XP is in french).

I have no issues in debug mode, this error happens in exe mode.

I use LV 8.6.1. Do you have any idea why?

Thank you

CFiset wrote:

Thanks, I'll take care of the details. But unfortunly, it does not.

uint32_t SystemParametersInfoA (uint32_t SPI, uint32_t 0, uint32_t * value, False uint32_t);

SPI = 114 = SPI_GETSCREENSAVERRUNNING

If * value! = 0, screen saver, ON the other scresaver OFF

Still have the fatal error of Windows.

Thank you

I noticed the node having a rather odd way of user32.dll on the initial load of the library call. You happen to have copied this DLL somewhere and SEO with full path to your VI?

It is a very big NO-NO! User32.dll and several other Windows system dll weird for the system and are all bad behavioured if you try to load another copy elsewhere on the disk as the system directory. Just rename the user32.dll library only and let Windows choose the good DLL from the system directory.

Another problem with specifying the full path to a copy of such a DLL, it of that LabVIEW you will think that you must have this built application-specific DLL and will include it in the build. However your user32.dll is almost 200% VERY incompatible to any other Windows system there, because of the Windows Service Pack version and upgrades of the correction of a bug, as well as different versions of Windows.

Rolf Kalbermatter

Tags: NI Software

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