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  1. Qt
  2. QTBUG-46803

QCocoaScreen::grabWindow doesn't work with retina and if an area is specified

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Details

    • Bug
    • Resolution: Done
    • P3: Somewhat important
    • None
    • 5.4.2, 5.9.8, 5.11
    • QPA
    • None
    • OS X 10.10.3 on a MacBook Pro with Retina display.
    • macOS

    Description

      The following example program is run on a Mac with retina display:

      #include <QApplication>
      #include <QWindow>
      #include <QScreen>
      #include <QPixmap>
      
      int main(int argc, char** argv)
      {
          QApplication a(argc, argv);
          QWindow win;
          QPixmap pm = win.screen()->grabWindow(0, 0, 0, 20, 30);
          pm.save("/tmp/a.png");
      }
      

      The saved image is of size 40x60 pixels which seems to be correct. But the displayed area is not the retina content, but rather the content of the logical coordinates 40x60 instead of the logcial coordinates 20x30.

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        For Gerrit Dashboard: QTBUG-46803
        # Subject Branch Project Status CR V

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            sorvig Morten Sørvig
            rms@froglogic.com Rainer
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            Dates

              Created:
              Updated:
              Resolved:

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