i write to ask information about how to create a client for a DLL written in c++. I have to instantiate and employ classes that are defined within the DLL. My development platform is mingw, the win32 porting of gnu g++. Can anyone help me? Thank you in advance for your kindness and availability.

Best regards,

You'll need a lib-file for the DLL to satisfy your linker. There should be a tool with your distribution to create that.
Then you're likely going to want a headerfile containing the declarations of the functions in the DLL, you're likely having to write that yourself (though some library importers I think spit them out for you).