[Interest] (no subject)

[王耀华]

Hi list ;)

I’m trying to change the brightness of a QPixmap, the basic idea is simple
as below:
1, convert the QPixmap into a QImage.
2, change every pixel of the QImage with the handy QColor::lighter and
QColor::setPixel function.
3, convert the QImage back to a QPixmap, done.

but the problem is that some white(semi-transparent) pixels are converted
to black !

there’s an example that can reproduce the problem, hope someone can give me
a

direction to go. Thanks!
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