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Frequent, periodic blank lines in Application Output

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  • P Offline
    P Offline
    Patrick Wright
    wrote on last edited by
    #1

    Hello,

    I have an odd issue (at least I think it is an issue) with an application I am writing in Qt. When the program is running, a blank line is added to the Application Output window every half a second or so. I have no debug or print statements anywhere that would cause this nor any timers that would be performing actions at regular intervals. The only possible idea I have is the output is coming from QML debugging (since I am using a QML widget in my application) and when the program starts I have the output "QML debugging is enabled. Only use this in a safe environment."

    Has anyone seen an issue like this before? What could be the possible causes? Are there any debugging steps I could take to determine where this output is coming from?

    This is an application on Windows 10 using Qt Creator 4.7.0.

    Thanks in advance!

    aha_1980A 1 Reply Last reply
    0
    • D Offline
      D Offline
      davecotter
      wrote on last edited by
      #2

      yes i've seen this too and it drives my OCD need for declutter absolutely bananagrams

      1 Reply Last reply
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      • dheerendraD Offline
        dheerendraD Offline
        dheerendra
        Qt Champions 2022
        wrote on last edited by
        #3

        which version of Qt on Windows ? Is it mingw or vc libraries ?

        Dheerendra
        @Community Service
        Certified Qt Specialist
        http://www.pthinks.com

        1 Reply Last reply
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        • P Patrick Wright

          Hello,

          I have an odd issue (at least I think it is an issue) with an application I am writing in Qt. When the program is running, a blank line is added to the Application Output window every half a second or so. I have no debug or print statements anywhere that would cause this nor any timers that would be performing actions at regular intervals. The only possible idea I have is the output is coming from QML debugging (since I am using a QML widget in my application) and when the program starts I have the output "QML debugging is enabled. Only use this in a safe environment."

          Has anyone seen an issue like this before? What could be the possible causes? Are there any debugging steps I could take to determine where this output is coming from?

          This is an application on Windows 10 using Qt Creator 4.7.0.

          Thanks in advance!

          aha_1980A Offline
          aha_1980A Offline
          aha_1980
          Lifetime Qt Champion
          wrote on last edited by aha_1980
          #4

          @Patrick-Wright there has been a bug report about this and iirc, this bug has been fixed for 4.7.2: https://code.qt.io/cgit/qt-creator/qt-creator.git/tree/dist/changes-4.7.2.md?h=4.7

          could you try updating Creator?

          Qt has to stay free or it will die.

          P 1 Reply Last reply
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          • aha_1980A aha_1980

            @Patrick-Wright there has been a bug report about this and iirc, this bug has been fixed for 4.7.2: https://code.qt.io/cgit/qt-creator/qt-creator.git/tree/dist/changes-4.7.2.md?h=4.7

            could you try updating Creator?

            P Offline
            P Offline
            Patrick Wright
            wrote on last edited by
            #5

            @aha_1980 I updated to the latest Qt Creator and that seems to have fixed the problem.

            Thanks!

            1 Reply Last reply
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