my first qt application, everythings ok, but background image get nothing. help me!!!

[Lykurg]

Hi,

what is

QPixmap p;
    qWarning() << p.load("demo.jpg");
    qWarning() << p.isNull();

QPixmap p;
    qWarning() << p.load("demo.jpg");
    qWarning() << p.isNull();

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telling you? I bet your path is wrong. As a solution use Qt's resource system to embed the image to your application or use a valid path...