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Bug
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Resolution: Unresolved
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P2: Important
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None
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5.3.2
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None
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Windows 8.1, Linux
I have an application that interactively moves objects derived from QWidget around the screen. Sometimes, they leave artifacts of the previous geometries which get cleaned up when I switch focus to another application, but stay on the screen until then.
Here is the paintEvent function:
void TestWidget::paintEvent(QPaintEvent *e)
{
QBrush b(QColor(55,200,55,190));
QPainter p(this);
p.setBrush(b);
//p.drawRect(QRect(QPoint,this->geometry().size()));
//p.drawRect(QRect(QPoint,geometry().size()));
if(thisRect().width() != 0 && thisRect().height() != 0)
{
p.drawRect(thisRect());
qDebug() << "painted rect is " << thisRect();
qDebug() << "painted geo is " << geometry();
}
}
There is a test case, pictures, and further discussion here:
http://stackoverflow.com/questions/27058165/qwidgets-leaving-artifacts-of-previous-paint