Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
  • Search
  • Get Qt Extensions
  • Unsolved
Collapse
Brand Logo
  1. Home
  2. Qt Development
  3. General and Desktop
  4. From 5.2.1 to 5.3
Forum Updated to NodeBB v4.3 + New Features

From 5.2.1 to 5.3

Scheduled Pinned Locked Moved General and Desktop
10 Posts 4 Posters 2.7k Views 1 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.
  • mrdebugM Offline
    mrdebugM Offline
    mrdebug
    wrote on last edited by
    #1

    In a Debian machine without desktop environment, where a Qt 5.2 program worked, now I obtain the message QT_MESSAGE_PATTERN: Unknow placeholder.
    Do you know what it means?

    Need programmers to hire?
    www.labcsp.com
    www.denisgottardello.it
    GMT+1
    Skype: mrdebug

    1 Reply Last reply
    0
    • M Offline
      M Offline
      mcosta
      wrote on last edited by
      #2

      QT_MESSAGE_PATTERN defines how logging functions (qDebug(), and family) print out information.

      It's an evironment variable, read "here":http://qt-project.org/doc/qt-5/debug.html#environment-variables-recognized-by-qt to learn about it

      Once your problem is solved don't forget to:

      • Mark the thread as SOLVED using the Topic Tool menu
      • Vote up the answer(s) that helped you to solve the issue

      You can embed images using (http://imgur.com/) or (http://postimage.org/)

      1 Reply Last reply
      0
      • mrdebugM Offline
        mrdebugM Offline
        mrdebug
        wrote on last edited by
        #3

        I have readed without finding the solution.
        What I have to do exactly?
        Why Qt 5.2.1 worked correctly?

        Need programmers to hire?
        www.labcsp.com
        www.denisgottardello.it
        GMT+1
        Skype: mrdebug

        1 Reply Last reply
        0
        • M Offline
          M Offline
          mcosta
          wrote on last edited by
          #4

          Try to check the value of the QT_MESSAGE_PATTERN environment variable

          Once your problem is solved don't forget to:

          • Mark the thread as SOLVED using the Topic Tool menu
          • Vote up the answer(s) that helped you to solve the issue

          You can embed images using (http://imgur.com/) or (http://postimage.org/)

          1 Reply Last reply
          0
          • mrdebugM Offline
            mrdebugM Offline
            mrdebug
            wrote on last edited by
            #5

            In my pc the QT_MESSAGE_PATTERN environment variable is not defined but the programs work correctly. In the other machines The programs, compiled with Qt 5.2.1 worked well.
            I think is a problem related to Qt 5.3, some dependencies missed or similar.
            I have set the variable in more different modes without to resolve.
            Now I think to downgrade to Qt 5.2.1

            Need programmers to hire?
            www.labcsp.com
            www.denisgottardello.it
            GMT+1
            Skype: mrdebug

            1 Reply Last reply
            0
            • SGaistS Offline
              SGaistS Offline
              SGaist
              Lifetime Qt Champion
              wrote on last edited by
              #6

              Hi,

              Can you reproduce that with a dummy program ?

              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
              0
              • mrdebugM Offline
                mrdebugM Offline
                mrdebug
                wrote on last edited by
                #7

                It's very easy. Every program without GUI works but not with GUI.
                I have installed qtcreator. Qtcreator works (I see the GUI).
                Now I'm bringing up a virtual machine for other tests.

                Need programmers to hire?
                www.labcsp.com
                www.denisgottardello.it
                GMT+1
                Skype: mrdebug

                1 Reply Last reply
                0
                • M Offline
                  M Offline
                  mcosta
                  wrote on last edited by
                  #8

                  Are you used installer or compiled QT from sources?
                  I'm using 5.3 under Windows (at the moment I don't have a Linux Machine upgradable to 5.3) and all works well.

                  EDIT

                  I just tried with a Kubuntu.
                  I created a new Project using Qt 5.3 and I had no problem

                  Once your problem is solved don't forget to:

                  • Mark the thread as SOLVED using the Topic Tool menu
                  • Vote up the answer(s) that helped you to solve the issue

                  You can embed images using (http://imgur.com/) or (http://postimage.org/)

                  1 Reply Last reply
                  0
                  • C Offline
                    C Offline
                    clochydd
                    wrote on last edited by
                    #9

                    I can confirm mcosta's statement:

                    I've just updated to 5.3 from 5.2.1 on Kubuntu 14.04 using "this: ":http://download.qt-project.org/official_releases/qt/5.3/5.3.0/qt-opensource-linux-x64-5.3.0.run, tested most of my projects and had not a single problem.

                    1 Reply Last reply
                    0
                    • mrdebugM Offline
                      mrdebugM Offline
                      mrdebug
                      wrote on last edited by
                      #10

                      Very strange. In a virtual machine all works well. I'll format the machine.

                      Need programmers to hire?
                      www.labcsp.com
                      www.denisgottardello.it
                      GMT+1
                      Skype: mrdebug

                      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 Extensions
                      • Unsolved