[Qt-interest] in fact, QImage::ARGB32 is BGRA32 ?

[James Yan]

hey all,

i need to access buff of QImage and modify them directly in ARGB32 format.
always, i found i just got error result, so i write a code to test like
following:

        //play with buff of theTest
        unsigned char* p = theTest.bits();
        int            w = theTest.width();
        int            h = theTest.height();
        int            s = theTest.bytesPerLine();
        for(int i=0;i<h;i++)
        {
            for(int j=0;j<w;j++)
            {
                int t = i*s + j*4;

                // it works in BGRA32
                p[t + 0] = 0;  // change B
                p[t + 1] = 0;  // change G
                p[t + 2] = 0;  // change R

                /* my original version
                p[t + 1] = 0;  // change R
                p[t + 2] = 0;  // change G
                p[t + 3] = 0;  // change B
               */
            }
        }

so, it looks like QImage::ARGB32 is BGRA32 actually?
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