Thank you Andre,
i found a very useful tool on web for command-line use: ExifTool by Phil
Harvey
http://www.sno.phy.queensu.ca/~phil/exiftool/
This tool does all i need. I can get the imageNumber with
"exiftool -FileNumber" and other tags.
"Andre_Saller" <x@no.email> schrieb im Newsbeitrag
news:1181652019230-534859@exchange.ni.com...
>I found something on the web concerning EXIF data and ANSI C. There is no
>CVI funtion for what you want to do, so you will have to use ANSI C based
>functions and/or libraries instead...
> <a href="http://libexif.sourceforge.net/internals/main.html"
> target="_blank">http://libexif.sourceforge.net/internals/main.html</a>
>
> Hope this helps.