child label alignment problem

[wysota]

This might be a stupid question, but why don't you compose a single pixmap out of the two pixmaps and set it to one label, so that you can get rid of the other?

[ht1]

All of your comments are very relevant (thanks wysota and jpn).
I have to use two pixmaps because I use a checkbox to turn different pixmaps on/off. Everything works really well except for the fact that two pixmaps of the same size won't align perfectly. I guess I could try converting both of them to files and then reload from the file. Problem is that that would slow things down and it wouldn't be as elegant.
Another thing I'm suspecting is that the scaled() function may work a bit differently when the background is transparent (as is the case the child label here). Anyway, I keep pushing because I'm very close to what I want to achieve. If any of you have some other ideas, I'm of course all eyes and ears!

[wysota]

All of your comments are very relevant (thanks wysota and jpn).
I have to use two pixmaps because I use a checkbox to turn different pixmaps on/off.

That doesn't determine you have to use two labels... You can have two pixmaps and then render them to a third pixmap which you can then show using the label.

[ht1]

Wysota, this is a great idea!
I didn't know you could automatically put two existing bitmaps together like that. How do you do it?

[wysota]

Sure you can.

QPixmap p1("px1.png");
QPixmap p2("px2.png");
QPixmap composite(p1.size());
QPainter p(&composite);
p.drawPixmap(p1);
p.drawPixmap(p2);
p.end();
QLabel *l = new QLabel(this);
l->setPixmap(composite);

QPixmap p1("px1.png");
QPixmap p2("px2.png");
QPixmap composite(p1.size());
QPainter p(&composite);
p.drawPixmap(p1);
p.drawPixmap(p2);
p.end();
QLabel *l = new QLabel(this);
l->setPixmap(composite);

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