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exe file replace using QProcess

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  • M mrjj
    14 Dec 2015, 18:46

    @4j1th
    Hmm. i think might need to run cmd also as del is part of command.exe.
    http://stackoverflow.com/questions/21596104/how-to-execute-a-cmd-command-using-qprocess
    he uses "cmd"
    something like
    process->start("cmd", QStringList() << "del " << currentpath);
    maybe ?

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    4j1th
    wrote on 14 Dec 2015, 19:07 last edited by
    #11

    @mrjj no luck it can't delete any file

    Pardon my English
    Thank you.

    1 Reply Last reply
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    • K kshegunov
      14 Dec 2015, 18:51

      @4j1th said:

      I am trying to update my soft. itself in windows, I can't replace a running exe itself with in so I try to do it by using QProcess.

      You can't, the OS will lock the file and will not allow you to modify it. It doesn't matter if you use QProcess or cmd, or explorer, it will not work.

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      4j1th
      wrote on 14 Dec 2015, 19:16 last edited by 4j1th
      #12

      @kshegunov so you're suggesting me to write another programme to run update

      But this idea works on linux.

      Pardon my English
      Thank you.

      M 1 Reply Last reply 14 Dec 2015, 19:19
      0
      • 4 4j1th
        14 Dec 2015, 19:16

        @kshegunov so you're suggesting me to write another programme to run update

        But this idea works on linux.

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        mrjj
        Lifetime Qt Champion
        wrote on 14 Dec 2015, 19:19 last edited by
        #13

        @4j1th
        Hi
        just tested in win 7.
        it wont allow to delete running exe.

        Linux will, i know. but Windows wont allow.

        4 1 Reply Last reply 14 Dec 2015, 19:26
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        • M mrjj
          14 Dec 2015, 19:19

          @4j1th
          Hi
          just tested in win 7.
          it wont allow to delete running exe.

          Linux will, i know. but Windows wont allow.

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          4j1th
          wrote on 14 Dec 2015, 19:26 last edited by
          #14

          @mrjj can you delete any other file, I can't do it either

          Pardon my English
          Thank you.

          M 1 Reply Last reply 14 Dec 2015, 19:31
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          • 4 4j1th
            14 Dec 2015, 19:26

            @mrjj can you delete any other file, I can't do it either

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            mrjj
            Lifetime Qt Champion
            wrote on 14 Dec 2015, 19:31 last edited by
            #15

            @4j1th
            hi

             QProcess process;
                process.start("cmd", QStringList() <<"/C" << "del" << "e:/test.txt " );
            

            this delete the file i put on e:\

            4 1 Reply Last reply 14 Dec 2015, 19:47
            1
            • M mrjj
              14 Dec 2015, 19:31

              @4j1th
              hi

               QProcess process;
                  process.start("cmd", QStringList() <<"/C" << "del" << "e:/test.txt " );
              

              this delete the file i put on e:\

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              4j1th
              wrote on 14 Dec 2015, 19:47 last edited by
              #16

              @mrjj @kshegunov

              you're right, can't replace running exe, so I think the best way to update is write an another app for updation right?

              Pardon my English
              Thank you.

              M 1 Reply Last reply 14 Dec 2015, 19:51
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              • 4 4j1th
                14 Dec 2015, 19:47

                @mrjj @kshegunov

                you're right, can't replace running exe, so I think the best way to update is write an another app for updation right?

                M Offline
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                mrjj
                Lifetime Qt Champion
                wrote on 14 Dec 2015, 19:51 last edited by
                #17

                @4j1th
                Well even another program cannot override the exe, so the updater must
                close the running version.

                4 1 Reply Last reply 14 Dec 2015, 19:57
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                • M mrjj
                  14 Dec 2015, 19:51

                  @4j1th
                  Well even another program cannot override the exe, so the updater must
                  close the running version.

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                  4j1th
                  wrote on 14 Dec 2015, 19:57 last edited by
                  #18

                  @mrjj Thank you for your help, this is the second time you help me like a guru

                  Thank you

                  Pardon my English
                  Thank you.

                  M 1 Reply Last reply 14 Dec 2015, 20:01
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                  • 4 4j1th
                    14 Dec 2015, 19:57

                    @mrjj Thank you for your help, this is the second time you help me like a guru

                    Thank you

                    M Offline
                    M Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on 14 Dec 2015, 20:01 last edited by
                    #19

                    @4j1th
                    You are most welcome :)
                    The exe you are trying to update. is it your own program?

                    4 1 Reply Last reply 14 Dec 2015, 20:02
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                    • M mrjj
                      14 Dec 2015, 20:01

                      @4j1th
                      You are most welcome :)
                      The exe you are trying to update. is it your own program?

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                      4j1th
                      wrote on 14 Dec 2015, 20:02 last edited by
                      #20

                      @mrjj yes

                      Pardon my English
                      Thank you.

                      M 1 Reply Last reply 14 Dec 2015, 20:04
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                      • 4 4j1th
                        14 Dec 2015, 20:02

                        @mrjj yes

                        M Offline
                        M Offline
                        mrjj
                        Lifetime Qt Champion
                        wrote on 14 Dec 2015, 20:04 last edited by
                        #21

                        @4j1th
                        Ok. that makes it easier to get it to close. :)
                        Will user check for update from inside the program or how will that happen?
                        (if i may ask)

                        4 2 Replies Last reply 14 Dec 2015, 20:10
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                        • M mrjj
                          14 Dec 2015, 20:04

                          @4j1th
                          Ok. that makes it easier to get it to close. :)
                          Will user check for update from inside the program or how will that happen?
                          (if i may ask)

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                          4j1th
                          wrote on 14 Dec 2015, 20:10 last edited by 4j1th
                          #22

                          @mrjj When the app starts it checks for update if available-> ask for update permission(user) -> invoke the updater using QProcess -> as you said close the app -> download and replace the exe

                          Pardon my English
                          Thank you.

                          1 Reply Last reply
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                          • M mrjj
                            14 Dec 2015, 20:04

                            @4j1th
                            Ok. that makes it easier to get it to close. :)
                            Will user check for update from inside the program or how will that happen?
                            (if i may ask)

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                            4j1th
                            wrote on 16 Dec 2015, 18:05 last edited by
                            #23

                            @mrjj Qt installer framework can replace a running exe and dll I don't know how!

                            Pardon my English
                            Thank you.

                            M 1 Reply Last reply 16 Dec 2015, 18:25
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                            • 4 4j1th
                              16 Dec 2015, 18:05

                              @mrjj Qt installer framework can replace a running exe and dll I don't know how!

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                              mrjj
                              Lifetime Qt Champion
                              wrote on 16 Dec 2015, 18:25 last edited by
                              #24

                              @4j1th said:
                              well on windows its not so hard using windows API.

                              1 Reply Last reply
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                              • R Offline
                                R Offline
                                Rondog
                                wrote on 16 Dec 2015, 19:19 last edited by
                                #25

                                There is a link to an article that talks about this problem and possible solutions. http://www.catch22.net/tuts/self-deleting-executables on Windows.

                                I, personally, would try to keep this sane. A separate updating utility that closes the original program and replaces or removes whatever should be replaced or removed is probably the safest thing to do.

                                K 1 Reply Last reply 16 Dec 2015, 23:50
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                                • R Rondog
                                  16 Dec 2015, 19:19

                                  There is a link to an article that talks about this problem and possible solutions. http://www.catch22.net/tuts/self-deleting-executables on Windows.

                                  I, personally, would try to keep this sane. A separate updating utility that closes the original program and replaces or removes whatever should be replaced or removed is probably the safest thing to do.

                                  K Offline
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                                  kshegunov
                                  Moderators
                                  wrote on 16 Dec 2015, 23:50 last edited by
                                  #26

                                  @Rondog

                                  I, personally, would try to keep this sane. A separate updating utility that closes the original program and replaces or removes whatever should be replaced or removed is probably the safest thing to do.

                                  I completely agree!

                                  Read and abide by the Qt Code of Conduct

                                  1 Reply Last reply
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                                  • S Offline
                                    S Offline
                                    SGaist
                                    Lifetime Qt Champion
                                    wrote on 17 Dec 2015, 00:03 last edited by
                                    #27

                                    Hi,

                                    One possibility would be to use the Qt Installer Framework that, AFAIK, has an updating functionality

                                    Interested in AI ? www.idiap.ch
                                    Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                                    4 1 Reply Last reply 17 Dec 2015, 15:42
                                    0
                                    • M Offline
                                      M Offline
                                      mrjj
                                      Lifetime Qt Champion
                                      wrote on 17 Dec 2015, 07:22 last edited by
                                      #28

                                      ;)
                                      Do not worry
                                      he is not planning on overwriting the exe from WITHIN the exe :)
                                      Even @Rondogs link is pretty interesting,
                                      it does indeed smell of a complex way of shooting your foot off :)

                                      1 Reply Last reply
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                                      • S SGaist
                                        17 Dec 2015, 00:03

                                        Hi,

                                        One possibility would be to use the Qt Installer Framework that, AFAIK, has an updating functionality

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                                        4j1th
                                        wrote on 17 Dec 2015, 15:42 last edited by 4j1th
                                        #29

                                        @SGaist
                                        tried qt installer framework but I don't think it can help the auto updating, launch a topic on this please see this link

                                        https://forum.qt.io/topic/61811/qt-installer-framework-auto-update

                                        Pardon my English
                                        Thank you.

                                        1 Reply Last reply
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