Question

What does setScaledContents means ? Read Qt’s manual , I did not understand it well.. And when it we need to be set to true、 As follow:

        lbLogo = new QLabel(this);
        lbLogo->setFixedSize(BUTTON_SIZE);
        lbLogo->setPixmap(QPixmap(":/NotePad.png"));
        //lbLogo->setScaledContents(true);

Qt: libpng warning: Interlace handling should be turned on when using png_read_image

Thank you~

Answer:
This is a bug… information from: http://www.qtcentre.org/threads/44544-Qt-4-7-4-problem-with-libpng

Answer 1

It scales the image of the label so that the image fits the label, not bigger or smaller.