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  1. Qt
  2. QTBUG-87851

Performance : QLineEdit first typed caracters appear with approx 1s delay

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    • Windows

    Description

      Hello,

      I created a new project with a QMainWindow.
      I just added a QLineEdit (horizontal layout = fullwidth); and compiled into release.

      The first letters I type in the application appears with a delay of 1 second, then it reacts normally and keyboard input doesn't lag anymore. There seem to be a slow keyboard lazy initialization phase.

      I am quite surprised: usually Qt is really fast, I don't understand.

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        1. lineedit.PNG
          lineedit.PNG
          2 kB
        2. fontdatabase.PNG
          fontdatabase.PNG
          41 kB
        3. fontdatabase.PNG
          fontdatabase.PNG
          41 kB

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              esabraha Eskil Abrahamsen Blomfeldt
              kiruahxh kiruahxh
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