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  1. Qt
  2. QTBUG-117521

Frameless window shows wrong size and view region if adjust the system display resolution scale from initial 100% to other scale.

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    • Icon: Bug Bug
    • Resolution: Unresolved
    • Icon: P1: Critical P1: Critical
    • None
    • 6.2, 6.5, 6.6.0 RC
    • GUI: High-DPI, Widgets: Layout
    • None
    • Windows

      step1: Set system display scale to 100%.

      step2: Add "setWindowFlag(Qt::FramelessWindowHint);" settings to top-level window with  QLayout (e.g Qt\Examples\Qt-x.x.x\widgets\layouts\basiclayouts)

      step3: Run this application.

      step4: Change system display scale option to another one.

      Then the  application's UI graphics will show wrong size and view region.

      (PS: It's fine if  system display scale was set other scale except 100% before run the QLayout application)

        1. image-2023-09-26-13-30-22-010.png
          30 kB
          liziqi
        For Gerrit Dashboard: QTBUG-117521
        # Subject Branch Project Status CR V
        516025,4 highdpi: don't use QHighDpiScaling::isActive() dev qt/qtbase Status: NEW +2 0

            sorvig Morten Sørvig
            liziqi liziqi
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                There is 1 open Gerrit change