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In fact there is a bug on my use of the dll (because of poor dll doc)

i have to write this

CallFunction( 0, "dll_Close",Handle)

in place of

CallFunction( 0, "dll_Close")

thanks to you (and to a delphi forum were the dll was implemented)

I have found that i i dont use the delete and close function of the dll it works.

Very strange. I think that the datas are store in memory and so are not destructed.

Bizarre.

Thanks, but this is not the solution. The problem was that all the operation executed on the procedure works : i can see the data returned by the dll. But i have error on the end of the procedure.

Do i have to release the handle ????

Hello. Sorry for the english but i dont have response for this question :

http://www.purebasic.fr/english/viewtopic.php?t=25336

I thank you all for your help.