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what qwidget subclass?

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  • U user4592357

    thanks. i'll read a text file for that, but why does that matter?

    mrjjM Offline
    mrjjM Offline
    mrjj
    Lifetime Qt Champion
    wrote on last edited by
    #12

    @user4592357
    Well if inside the app you must escape

    c:\\xxx\\cyy\\
    

    But that is not valid if from text file so just asking to try to guess reason that is not shown :)

    U 1 Reply Last reply
    1
    • mrjjM mrjj

      @user4592357
      Well if inside the app you must escape

      c:\\xxx\\cyy\\
      

      But that is not valid if from text file so just asking to try to guess reason that is not shown :)

      U Offline
      U Offline
      user4592357
      wrote on last edited by
      #13

      @mrjj

      QFile::exists() gives false when i use a full path for the image (like, C:\Users\user\image.png). but the file sure exists. i've tried using \\ instead of \, also / but not much success. with resource system, however, everything is okay

      mrjjM 1 Reply Last reply
      0
      • U user4592357

        @mrjj

        QFile::exists() gives false when i use a full path for the image (like, C:\Users\user\image.png). but the file sure exists. i've tried using \\ instead of \, also / but not much success. with resource system, however, everything is okay

        mrjjM Offline
        mrjjM Offline
        mrjj
        Lifetime Qt Champion
        wrote on last edited by
        #14

        @user4592357
        if you take one of the paths from the file
        and start paintbrush, select file->open
        and paste the path into the filename area. and then press open.
        will it then open ?

        it sounds really, really wrong if QFile::exists() says false.

        U 1 Reply Last reply
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        • mrjjM mrjj

          @user4592357
          if you take one of the paths from the file
          and start paintbrush, select file->open
          and paste the path into the filename area. and then press open.
          will it then open ?

          it sounds really, really wrong if QFile::exists() says false.

          U Offline
          U Offline
          user4592357
          wrote on last edited by
          #15

          @mrjj

          yes it opens.

          this is weird, really.
          this works:

          QFileInfo file("C:\Users\user\image.png");
          setIcon(file.filePath());
          

          but when i get the SAME line from a file and set the icon to it... it doesn't work

          mrjjM 1 Reply Last reply
          0
          • U user4592357

            @mrjj

            yes it opens.

            this is weird, really.
            this works:

            QFileInfo file("C:\Users\user\image.png");
            setIcon(file.filePath());
            

            but when i get the SAME line from a file and set the icon to it... it doesn't work

            mrjjM Offline
            mrjjM Offline
            mrjj
            Lifetime Qt Champion
            wrote on last edited by
            #16

            Hi
            Did you try to qDebug() << file.filePath();
            to see if anything still 100% like the one in file?

            U 1 Reply Last reply
            1
            • mrjjM mrjj

              Hi
              Did you try to qDebug() << file.filePath();
              to see if anything still 100% like the one in file?

              U Offline
              U Offline
              user4592357
              wrote on last edited by
              #17

              @mrjj

              yes they're the same, actually i've copied them

              mrjjM 1 Reply Last reply
              0
              • U user4592357

                @mrjj

                yes they're the same, actually i've copied them

                mrjjM Offline
                mrjjM Offline
                mrjj
                Lifetime Qt Champion
                wrote on last edited by mrjj
                #18

                @user4592357
                Really cannot guess then.
                If path in text file truely are valid syntax, it should just work.
                and you are 100% sure you escape it ?
                ( which is needed when inside the code, but from text file)

                setIcon("C:\\Users\\user\\image.png");
                
                
                U 1 Reply Last reply
                0
                • mrjjM mrjj

                  @user4592357
                  Really cannot guess then.
                  If path in text file truely are valid syntax, it should just work.
                  and you are 100% sure you escape it ?
                  ( which is needed when inside the code, but from text file)

                  setIcon("C:\\Users\\user\\image.png");
                  
                  
                  U Offline
                  U Offline
                  user4592357
                  wrote on last edited by
                  #19

                  @mrjj

                  yes i've tried everything

                  okay, thanks anyways

                  mrjjM 1 Reply Last reply
                  0
                  • U user4592357

                    @mrjj

                    yes i've tried everything

                    okay, thanks anyways

                    mrjjM Offline
                    mrjjM Offline
                    mrjj
                    Lifetime Qt Champion
                    wrote on last edited by
                    #20

                    @user4592357
                    I have done it many times so I do
                    wonder what you do that is
                    different or if it really just is a path issue.

                    U 1 Reply Last reply
                    0
                    • mrjjM mrjj

                      @user4592357
                      I have done it many times so I do
                      wonder what you do that is
                      different or if it really just is a path issue.

                      U Offline
                      U Offline
                      user4592357
                      wrote on last edited by user4592357
                      #21

                      @mrjj

                      it's really just a path

                      i even tried to QDir::toNativeSeparators(). nothing works

                      1 Reply Last reply
                      0
                      • SGaistS Offline
                        SGaistS Offline
                        SGaist
                        Lifetime Qt Champion
                        wrote on last edited by
                        #22

                        Hi,

                        Since you are using Qt, why not use the Unix notation ? Qt handles the conversion when it calls the related platform specific functions.

                        So it should be C:/Users/user/image.png

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

                        U 1 Reply Last reply
                        0
                        • SGaistS SGaist

                          Hi,

                          Since you are using Qt, why not use the Unix notation ? Qt handles the conversion when it calls the related platform specific functions.

                          So it should be C:/Users/user/image.png

                          U Offline
                          U Offline
                          user4592357
                          wrote on last edited by
                          #23

                          @SGaist

                          i've tried that too, it doesn't work

                          1 Reply Last reply
                          0
                          • SGaistS Offline
                            SGaistS Offline
                            SGaist
                            Lifetime Qt Champion
                            wrote on last edited by
                            #24

                            Does that file have any permission issues ?
                            Are you 100% sure that it's there ?
                            Are you loading it from your own user account ?
                            Any special char in the path ? i.e is user really the account name ?

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

                            1 Reply Last reply
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