[Qt-interest] Building an image from raw unsigned char array

[Cole, Derek]

Hello,

I have image data coming in from a C++ function as an unsigned char**

It was defined to he H*W*3 in size, so there are 3 values for each pixel - a Red Green and Blue 

How is the best way to pull this data in to Qt so taht it can be displayed in a label?

I thought I could use 

        QImage *qi = new QImage(imwidth, imheight, QImage::Format_ARGB32);
            for (int i = 0 ; i < imheight ; i++)
                for (int j = 0 ; j < imwidth ; j++)
                {
                       qi->setPixel(j,i,qRgb(imageData[i][j],imageData[i][j+1],imageData[i][j+2]));
                       j+=3;

                   }

       QPixmap p(QPixmap::fromImage(*qi,Qt::AutoColor));
       QPixmap p1(p.scaled(ui->menuBar->width(),ui->menuBar->width(), Qt::KeepAspectRatio, Qt::SmoothTransformation ));
       ui->viewLabel->setPixmap(p1);
       ui->viewLabel->setFixedHeight(p1.height());
       ui->viewLabel->setFixedWidth(p1.width());

But this gives me distorted results. imageData is what holds the unsigned char** passed back from the other function.

Thanks in advance

derek
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