Display QImage within main window
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I'm trying to display an image with Qt, I can get it to appear in a separate window, but I can't make it appear within the main window

    Qt_first w;
    w.show();

This shows the window I designed in Qt designer, how do I access the Qlabel(Image_Lbel) I put within the QWidget (centralWidget) of that window?

I generated a stripy image that shows correctly, just not within the correct window

    QSize size = QSize(640,480);
    QImage::Format format = QImage::Format_ARGB32;
    QImage image = QImage::QImage(size, format);
    //generate
    QLabel myLabel;
    myLabel.setPixmap(QPixmap::fromImage(image));
    myLabel.show();

I get the feeling it could be I haven't included the files from the creator or the namespaces any suggestion much appreciated