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exe file replace using QProcess

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  • mrjjM mrjj

    @4j1th said:
    Ok. never tried to delete running exe :)
    I wonder about the name
    "mySoft.exe.tmp"

    Why .tmp?

    4 Offline
    4 Offline
    4j1th
    wrote on last edited by
    #6

    @mrjj download a new version from server and save it in mysoft.exe.tmp then remove mysoft.exe then rename mysoft.exe.tmp to mysoft.exe. I tried this method because in this way I don't want to create another program for updating.

    I just try to delete another file in the same dir but the same error, then try to delete an image file in home dir it also give the same error. I think 't's not about the permission. also tried using DEL /F /Q /A <File Path>

    Pardon my English
    Thank you.

    mrjjM 1 Reply Last reply
    0
    • 4 4j1th

      @mrjj download a new version from server and save it in mysoft.exe.tmp then remove mysoft.exe then rename mysoft.exe.tmp to mysoft.exe. I tried this method because in this way I don't want to create another program for updating.

      I just try to delete another file in the same dir but the same error, then try to delete an image file in home dir it also give the same error. I think 't's not about the permission. also tried using DEL /F /Q /A <File Path>

      mrjjM Offline
      mrjjM Offline
      mrjj
      Lifetime Qt Champion
      wrote on last edited by
      #7

      @4j1th
      Maybe its something basic ?
      Like spaces in file path ?

      4 1 Reply Last reply
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      • mrjjM mrjj

        @4j1th
        Maybe its something basic ?
        Like spaces in file path ?

        4 Offline
        4 Offline
        4j1th
        wrote on last edited by
        #8

        @mrjj use the out from qDebug() << currentpath; then run it on cmd works

        Pardon my English
        Thank you.

        mrjjM 1 Reply Last reply
        0
        • 4 4j1th

          @mrjj use the out from qDebug() << currentpath; then run it on cmd works

          mrjjM Offline
          mrjjM Offline
          mrjj
          Lifetime Qt Champion
          wrote on last edited by mrjj
          #9

          @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 ?

          kshegunovK 4 2 Replies Last reply
          1
          • mrjjM mrjj

            @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 ?

            kshegunovK Offline
            kshegunovK Offline
            kshegunov
            Moderators
            wrote on last edited by
            #10

            @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.

            Read and abide by the Qt Code of Conduct

            4 1 Reply Last reply
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            • mrjjM mrjj

              @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 ?

              4 Offline
              4 Offline
              4j1th
              wrote on last edited by
              #11

              @mrjj no luck it can't delete any file

              Pardon my English
              Thank you.

              1 Reply Last reply
              0
              • kshegunovK kshegunov

                @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.

                4 Offline
                4 Offline
                4j1th
                wrote on 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.

                mrjjM 1 Reply Last reply
                0
                • 4 4j1th

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

                  But this idea works on linux.

                  mrjjM Offline
                  mrjjM Offline
                  mrjj
                  Lifetime Qt Champion
                  wrote on 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
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                  • mrjjM mrjj

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

                    Linux will, i know. but Windows wont allow.

                    4 Offline
                    4 Offline
                    4j1th
                    wrote on last edited by
                    #14

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

                    Pardon my English
                    Thank you.

                    mrjjM 1 Reply Last reply
                    1
                    • 4 4j1th

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

                      mrjjM Offline
                      mrjjM Offline
                      mrjj
                      Lifetime Qt Champion
                      wrote on 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
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                      • mrjjM mrjj

                        @4j1th
                        hi

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

                        this delete the file i put on e:\

                        4 Offline
                        4 Offline
                        4j1th
                        wrote on 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.

                        mrjjM 1 Reply Last reply
                        1
                        • 4 4j1th

                          @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?

                          mrjjM Offline
                          mrjjM Offline
                          mrjj
                          Lifetime Qt Champion
                          wrote on 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
                          1
                          • mrjjM mrjj

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

                            4 Offline
                            4 Offline
                            4j1th
                            wrote on 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.

                            mrjjM 1 Reply Last reply
                            0
                            • 4 4j1th

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

                              Thank you

                              mrjjM Offline
                              mrjjM Offline
                              mrjj
                              Lifetime Qt Champion
                              wrote on 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
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                              • mrjjM mrjj

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

                                4 Offline
                                4 Offline
                                4j1th
                                wrote on last edited by
                                #20

                                @mrjj yes

                                Pardon my English
                                Thank you.

                                mrjjM 1 Reply Last reply
                                0
                                • 4 4j1th

                                  @mrjj yes

                                  mrjjM Offline
                                  mrjjM Offline
                                  mrjj
                                  Lifetime Qt Champion
                                  wrote on 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
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                                  • mrjjM mrjj

                                    @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 Offline
                                    4 Offline
                                    4j1th
                                    wrote on 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
                                    0
                                    • mrjjM mrjj

                                      @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 Offline
                                      4 Offline
                                      4j1th
                                      wrote on 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.

                                      mrjjM 1 Reply Last reply
                                      0
                                      • 4 4j1th

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

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

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

                                        1 Reply Last reply
                                        0
                                        • R Offline
                                          R Offline
                                          Rondog
                                          wrote on 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.

                                          kshegunovK 1 Reply Last reply
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