<![CDATA[QWSServer : Changing background color]]>Hello,

I'm using Qt4.8 on an embedded platform and I would like to change the background color of the QWSServer to set it as transparent.
I tried to change the QWSServer's brush using the function qwsServer->setBackground(QBrush(Qt::transparent)); but it doesn't work.
I also tried Qt::red, Qt::white but the background color remains unchanged.

Does anyone have an idea ?

Thanks.

Here is my initialization code...
@int main(int argc, char *argv[])
{
QApplication a(argc, argv, QApplication::GuiServer);
qwsServer->setBackground(QBrush(Qt::transparent));

CustomWindow w;
w.setGeometry(50, 50, 500, 300);
w.show();
return a.exec();
}
@

]]>https://forum.qt.io/topic/15215/qwsserver-changing-background-colorRSS for NodeSun, 25 Oct 2026 09:58:14 GMTThu, 22 Mar 2012 11:30:05 GMT60<![CDATA[Reply to QWSServer : Changing background color on Mon, 26 Mar 2012 08:52:27 GMT]]>Thanks all,

The solution of timon works.

]]>https://forum.qt.io/post/133589https://forum.qt.io/post/133589Mon, 26 Mar 2012 08:52:27 GMT<![CDATA[Reply to QWSServer : Changing background color on Fri, 23 Mar 2012 15:46:13 GMT]]>I have same issue, and figured out it using /etc/directfbrc config. I added option bg-none or bg-color=000000 in config for transparent background. http://directfb.org/docs/directfbrc.5.html

]]>https://forum.qt.io/post/133447https://forum.qt.io/post/133447Fri, 23 Mar 2012 15:46:13 GMT<![CDATA[Reply to QWSServer : Changing background color on Thu, 22 Mar 2012 14:41:49 GMT]]>Sorry, I'm using 4.8. And not using Direct FB, using QWS_DISPLAY=LinuxFB.

]]>https://forum.qt.io/post/133327https://forum.qt.io/post/133327Thu, 22 Mar 2012 14:41:49 GMT<![CDATA[Reply to QWSServer : Changing background color on Thu, 22 Mar 2012 14:09:11 GMT]]>What Qt version do you use?

PS : I use Direct FB display driver.

]]>https://forum.qt.io/post/133320https://forum.qt.io/post/133320Thu, 22 Mar 2012 14:09:11 GMT<![CDATA[Reply to QWSServer : Changing background color on Thu, 22 Mar 2012 12:53:59 GMT]]>yes, setting it to white works as well

]]>https://forum.qt.io/post/133302https://forum.qt.io/post/133302Thu, 22 Mar 2012 12:53:59 GMT<![CDATA[Reply to QWSServer : Changing background color on Thu, 22 Mar 2012 12:43:03 GMT]]>Still doesn't work.

Does it work on your side?

Does your background change to black?

]]>https://forum.qt.io/post/133297https://forum.qt.io/post/133297Thu, 22 Mar 2012 12:43:03 GMT<![CDATA[Reply to QWSServer : Changing background color on Thu, 22 Mar 2012 12:38:03 GMT]]>try this

@#include <QWSServer>
int main(int argc, char *argv[])
{
QApplication app(argc, argv);

#ifdef Q_WS_QWS
app.setOverrideCursor( QCursor( Qt::BlankCursor ) );
QWSServer::setCursorVisible( false );
QWSServer::setBackground(QBrush(Qt::black));
//QWSServer::setBackground(QBrush(Qt::transparent));  // have not tested  
#endif

}@

]]>https://forum.qt.io/post/133296https://forum.qt.io/post/133296Thu, 22 Mar 2012 12:38:03 GMT