ok. I have changed it back again to use "cdecl" in function-variable, and i have talked to the guy who provided the "DllExport" attribute, and he suggested me to change some configuration stuff, and now atleast i get this:
(see image below)
why is the address 000000000?
now, indeed, the functionPointer gives back nill... I changed some stuff with his "Configurator-Tool" (u dont have controll over that sadly so u cant give me hints anyway^^) but curious...