Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt
  • Unsolved
Collapse
qtws26_logo

The Qt Event of the Year: Qt World Summit 2026

Save Your Spot >
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. QuaZip - Undefined Reference
Qt 6.12 LTS is out! See what's new in the release blog

QuaZip - Undefined Reference

Scheduled Pinned Locked Moved Solved General and Desktop
33 Posts 5 Posters 12.8k Views 2 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • FluentCodingF Offline
    FluentCodingF Offline
    FluentCoding
    wrote on last edited by
    #22
    This post is deleted!
    1 Reply Last reply
    0
    • mrjjM mrjj

      @FluentCoding
      Hi
      Yes it can be both memory and file-based
      see section
      Extract a zip entry into memory using callback.

      FluentCodingF Offline
      FluentCodingF Offline
      FluentCoding
      wrote on last edited by FluentCoding
      #23

      @mrjj Thanks but I meant from memory, not into memory.

      mrjjM 1 Reply Last reply
      0
      • FluentCodingF FluentCoding

        @mrjj Thanks but I meant from memory, not into memory.

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #24

        @FluentCoding
        if you mean
        Can i add a buffer to the zip file as was it a file then yes :)

                        auto bytes = QByteArray::fromRawData(reinterpret_cast<const char *>(memory), int(fileSize32Bit));
                        zip_entry_write(zip, bytes, fileSize32Bit);
        
        
        1 Reply Last reply
        1
        • FluentCodingF Offline
          FluentCodingF Offline
          FluentCoding
          wrote on last edited by FluentCoding
          #25

          @mrjj Alright - (hopefully the) last question: How can I create zip_t object without zip_open, so that i only use zip_entry_write to add the buffer? Should I just create an object of the struct zip_t? Also, should I replace fileSize32Bit with the size of the QByteArray?

          mrjjM 1 Reply Last reply
          0
          • FluentCodingF FluentCoding

            @mrjj Alright - (hopefully the) last question: How can I create zip_t object without zip_open, so that i only use zip_entry_write to add the buffer? Should I just create an object of the struct zip_t? Also, should I replace fileSize32Bit with the size of the QByteArray?

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #26

            Hi
            I have not tried that but look in zip.c and

            struct zip_t *zip_open(const char *zipname, int level, char mode) {
            
            

            I think you can init it up as you like if you follow that code and the various modes + flags.

            Yes, fileSize32Bit should be the QByteArray size.

            1 Reply Last reply
            0
            • FluentCodingF Offline
              FluentCodingF Offline
              FluentCoding
              wrote on last edited by FluentCoding
              #27

              Alright, but I think that I'll try another framework :/ It seems that I can run into problems - im neither sure if the zip files i wanna extract are 32 bit and maybe, I would need to extract a .rar or .7z later. I will give Zipper a try. But thank you very much for your support, @mrjj.

              mrjjM 1 Reply Last reply
              0
              • FluentCodingF FluentCoding

                Alright, but I think that I'll try another framework :/ It seems that I can run into problems - im neither sure if the zip files i wanna extract are 32 bit and maybe, I would need to extract a .rar or .7z later. I will give Zipper a try. But thank you very much for your support, @mrjj.

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by
                #28

                @FluentCoding
                Hi
                Ok. Please post if you find something good that is easy to compile on windows.
                Also, could you pos the link for the zlib you used ?
                I cannot find any MSI and Im still abit hooked on QuaZip :)

                1 Reply Last reply
                0
                • FluentCodingF Offline
                  FluentCodingF Offline
                  FluentCoding
                  wrote on last edited by
                  #29

                  Sure, @mrjj.

                  http://gnuwin32.sourceforge.net/packages/zlib.htm

                  This is the official download page. If you search good enough on the zlib homepage, you'll see that you have to download the binaries from this page.

                  mrjjM 1 Reply Last reply
                  0
                  • FluentCodingF FluentCoding

                    Sure, @mrjj.

                    http://gnuwin32.sourceforge.net/packages/zlib.htm

                    This is the official download page. If you search good enough on the zlib homepage, you'll see that you have to download the binaries from this page.

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #30

                    @FluentCoding
                    So you took one of these ?

                    alt text

                    1 Reply Last reply
                    0
                    • FluentCodingF Offline
                      FluentCodingF Offline
                      FluentCoding
                      wrote on last edited by FluentCoding
                      #31

                      @mrjj Yeah, the "Complete package, except sources" one.

                      mrjjM 1 Reply Last reply
                      0
                      • FluentCodingF FluentCoding

                        @mrjj Yeah, the "Complete package, except sources" one.

                        mrjjM Offline
                        mrjjM Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on last edited by
                        #32

                        @FluentCoding
                        Ok super. The DLL is from 2005.
                        Will try and see what visual studio thinks of it.

                        FluentCodingF 1 Reply Last reply
                        0
                        • mrjjM mrjj

                          @FluentCoding
                          Ok super. The DLL is from 2005.
                          Will try and see what visual studio thinks of it.

                          FluentCodingF Offline
                          FluentCodingF Offline
                          FluentCoding
                          wrote on last edited by
                          #33

                          @mrjj Alright.

                          1 Reply Last reply
                          0

                          • Login

                          • Login or register to search.
                          • First post
                            Last post
                          0
                          • Categories
                          • Recent
                          • Tags
                          • Popular
                          • Users
                          • Groups
                          • Search
                          • Get Qt
                          • Unsolved