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  4. How to return parameters from DLL ?

How to return parameters from DLL ?

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  • N Offline
    N Offline
    Nikhil Trivedi
    wrote on last edited by
    #1

    Hi All, I have developed an HTTPS request DLL. I want to return the headers and message body to the calling application. The prototype of my DLL function is int. How can I pass the returned headers and message body ? Please help me. Thanks for your prompt reply. Nikhs Nikhil Trivedi

    CPalliniC 1 Reply Last reply
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    • N Nikhil Trivedi

      Hi All, I have developed an HTTPS request DLL. I want to return the headers and message body to the calling application. The prototype of my DLL function is int. How can I pass the returned headers and message body ? Please help me. Thanks for your prompt reply. Nikhs Nikhil Trivedi

      CPalliniC Offline
      CPalliniC Offline
      CPallini
      wrote on last edited by
      #2

      Usually it's not a big problem, just return char pointers. :)

      Nikhil Trivedi wrote:

      The prototype of my DLL function is int

      What do you mean? Cannot you change the function prototype, can you? :confused:

      If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.

      In testa che avete, signor di Ceprano?

      N 1 Reply Last reply
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      • CPalliniC CPallini

        Usually it's not a big problem, just return char pointers. :)

        Nikhil Trivedi wrote:

        The prototype of my DLL function is int

        What do you mean? Cannot you change the function prototype, can you? :confused:

        If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.

        N Offline
        N Offline
        Nikhil Trivedi
        wrote on last edited by
        #3

        Is there any other way except changing the function prototype ? Thanks for your reply. Nikhs Nikhil Trivedi

        CPalliniC 1 Reply Last reply
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        • N Nikhil Trivedi

          Is there any other way except changing the function prototype ? Thanks for your reply. Nikhs Nikhil Trivedi

          CPalliniC Offline
          CPalliniC Offline
          CPallini
          wrote on last edited by
          #4

          Oh yes, a bit contrived yet. If you function returns a 32-bit integer then you can interpeter it as a pointer (at least on 32-bit systems...). That stated, you may arrange the two buffer pointers in a struct and return the struct address to the caller. However, IMHO it's better to change the function prototype. :)

          If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.

          In testa che avete, signor di Ceprano?

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