Transparent background support for QX11EmbedWidget

When embedding a QX11EmbedWidget with a transparent background into a QX11EmbedContainer, the transparency does not work.

// embedwidget.cpp code

#include <QtGui>
#include <QX11EmbedWidget>

int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QX11EmbedWidget w;
w.setStyleSheet("QX11EmbedWidget

{ background-color: transparent; }

");

QVBoxLayout *vLayout = new QVBoxLayout(&w);
w.setLayout(vLayout);
QTextEdit *edit = new QTextEdit(&w);
edit->setText("foobar");
vLayout->addWidget(edit);

qDebug() << "client id" << w.winId();

w.resize(100, 100);
w.show();
return app.exec();
}

// embedcontainer code

#include <QtGui>
#include <QX11EmbedContainer>

class X11EmbedContainer : public QX11EmbedContainer
{
Q_OBJECT
public:
X11EmbedContainer(QWidget *parent = NULL) : QX11EmbedContainer(parent)

{ connect(this, SIGNAL(clientIsEmbedded()), this, SLOT(onEmbedded())); }

void paintEvent(QPaintEvent *event)

{ QPainter painter(this); painter.fillRect(event->rect(), Qt::cyan); QX11EmbedContainer::paintEvent(event); }

public slots:
void onEmbedded()

{ qDebug() << "embedded"; }

};

#include "embedcontainer.moc"

int main(int argc, char *argv[])
{
QApplication app(argc, argv);

X11EmbedContainer container;
container.show();

if (argc > 1) {
bool ok;
int id = QString(argv[1]).toInt(&ok);
if (ok)

{ container.embedClient(id); }

}

return app.exec();
}

Update: This is not a bug; it's how the X11 embed support in Qt has always worked.