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  4. Error C2664: 'GetVolumeInformationW' : cannot convert parameter 1 from 'const char [4]' to 'LPCWSTR'

Error C2664: 'GetVolumeInformationW' : cannot convert parameter 1 from 'const char [4]' to 'LPCWSTR'

Scheduled Pinned Locked Moved C / C++ / MFC
helpcsharpc++visual-studioquestion
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  • R Rajesh R Subramanian

    Try this code:

    TCHAR volumeName\[MAX\_PATH\];
    DWORD volumeSerialNumber;
    DWORD maxNameLength;
    DWORD fileSystemFlags;
    TCHAR systemName\[MAX\_PATH\];
    
    // get the volume information for drive C
    GetHDDserialNo = GetVolumeInformation(\_T("c:\\\\"),
    	volumeName, MAX\_PATH,
    	&volumeSerialNumber,
    	&maxNameLength,
    	&fileSystemFlags,
    	systemName, MAX\_PATH); 
    

    Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

    J Offline
    J Offline
    J_E_D_I
    wrote on last edited by
    #3

    An absolute Genius! Thank you so much. But why is that?

    C R 2 Replies Last reply
    0
    • J J_E_D_I

      An absolute Genius! Thank you so much. But why is that?

      C Offline
      C Offline
      Cedric Moonen
      wrote on last edited by
      #4

      Because you have UNICODE enabled, so a lot of functions from the Win32 API expect strings in UNICODE and not in ANSI. I suggest you search for articles on that subject here on codeproject, it is a bit broad to explain in one single post.

      Cédric Moonen Software developer
      Charting control [v1.3]

      1 Reply Last reply
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      • J J_E_D_I

        An absolute Genius! Thank you so much. But why is that?

        R Offline
        R Offline
        Rajesh R Subramanian
        wrote on last edited by
        #5

        Hontesly no genius. Trust me, it is a simple thing. Read on Generic text mappings.

        Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

        CPalliniC J 2 Replies Last reply
        0
        • R Rajesh R Subramanian

          Hontesly no genius. Trust me, it is a simple thing. Read on Generic text mappings.

          Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

          CPalliniC Offline
          CPalliniC Offline
          CPallini
          wrote on last edited by
          #6

          Rajesh R Subramanian wrote:

          Hontesly no genius.

          Actually, you are a genius. Only geniuses swap not adjacent characters in a word the way you did. :laugh:

          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.
          This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

          In testa che avete, signor di Ceprano?

          R 1 Reply Last reply
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          • CPalliniC CPallini

            Rajesh R Subramanian wrote:

            Hontesly no genius.

            Actually, you are a genius. Only geniuses swap not adjacent characters in a word the way you did. :laugh:

            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.
            This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

            R Offline
            R Offline
            Rajesh R Subramanian
            wrote on last edited by
            #7

            Yuo wlil nto msis oen signle cahnce to mcok at me, wlil oyu? :laugh:

            Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

            CPalliniC 1 Reply Last reply
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            • R Rajesh R Subramanian

              Yuo wlil nto msis oen signle cahnce to mcok at me, wlil oyu? :laugh:

              Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

              CPalliniC Offline
              CPalliniC Offline
              CPallini
              wrote on last edited by
              #8

              Oh no, you reverted to common-man adjacent characters swapping! :sigh: :)

              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.
              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

              In testa che avete, signor di Ceprano?

              R 1 Reply Last reply
              0
              • CPalliniC CPallini

                Oh no, you reverted to common-man adjacent characters swapping! :sigh: :)

                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.
                This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                R Offline
                R Offline
                Rajesh R Subramanian
                wrote on last edited by
                #9

                Probably this[^] would give you an idea why such swapping happens while I type. :)

                Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                1 Reply Last reply
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                • R Rajesh R Subramanian

                  Hontesly no genius. Trust me, it is a simple thing. Read on Generic text mappings.

                  Nobody can give you wiser advice than yourself. - Cicero .·´¯`·->Rajesh<-·´¯`·. Codeproject.com: Visual C++ MVP

                  J Offline
                  J Offline
                  J_E_D_I
                  wrote on last edited by
                  #10

                  Well, thanks to both of you for the explanations anyway. It solved the problem.

                  M 1 Reply Last reply
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                  • J J_E_D_I

                    Well, thanks to both of you for the explanations anyway. It solved the problem.

                    M Offline
                    M Offline
                    Michael Dunn
                    wrote on last edited by
                    #11

                    Start here: The Complete Guide to C++ Strings, Part I - Win32 Character Encodings[^]

                    --Mike-- Visual C++ MVP :cool: LINKS~! CP SearchBar v3.0 | C++ Forum FAQ I work for Keyser Söze

                    J 1 Reply Last reply
                    0
                    • M Michael Dunn

                      Start here: The Complete Guide to C++ Strings, Part I - Win32 Character Encodings[^]

                      --Mike-- Visual C++ MVP :cool: LINKS~! CP SearchBar v3.0 | C++ Forum FAQ I work for Keyser Söze

                      J Offline
                      J Offline
                      J_E_D_I
                      wrote on last edited by
                      #12

                      Thanks!

                      1 Reply Last reply
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