Best way to display live raw RGB data

Sat, 08 Mar 2014 20:51:27 -0800 

I have a raw image buffer in xRGB format, 4 bytes per pixel, no row padding. 
I’m unsure as to how to display it on screen – I played around with Qimage, 
QPixmap and QLabel, but only got blank screens for my efforts :(

    QImage *img = new QImage(_data, _width, _height, QImage::Format_RGB32);
     
    pix =  QPixmap::fromImage(*img);
    ui->lbImage->setPixmap(pix);

I also tried QImage::Format_ARGB32

Also, the image buffer is live – I get events detailing rectangles on the 
image which need redrawing – is there a best (speedy) way to accommodate that?

For context on my question – the raw buffer is a remote desktop image from a 
qemu spice server.

Sorry for my graphics ignorance,

thanks.

-- 
Lindsay

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