I'd like to pop up a dialog on top of other widgets on iOS as if it's a
pop-up window (message box etc). My application is pure widgets and I'm
using Qt 5.4.0.
It seems that windows are always maximized on the iOS platform, so I put
everything inside a QFrame and positioned the frame where I want the
window to appear to be. However, I can't get the background of the
window to be transparent.
In Qt 4 it was possible by setting "background: transparent" in the
stylesheet for that element, and the WA_TranslucentBackground|| window
attribute. However this is not having any effect in Qt 5. I'm able to
set colours ok (and I can make the whole window translucent with
setOpacity), but I can't get the background itself to be transparent.
I'm creating the dialog as follows;
TMobileTopicInfo::TMobileTopicInfo(bool error, const QString& heading, const
QString& body, QWidget *parent)
: QDialog(parent, Qt::Dialog| Qt::FramelessWindowHint)
{
setAttribute(Qt::WA_TranslucentBackground, true);
//setAttribute(Qt::WA_NoSystemBackground, true); // tried - doesn't seem
helpful.
mUi.setupUi( this );
//...
}
The window background is black, on both iOS and on Windows.
There's suggestions on StackOverflow that the window flags should be
overriden to change the window type to QWidget instead of QDialog. This
actually seems to work (the background is transparent), but then there
seem to be widget focus issues on iOS.
Any suggestions?
Thanks
Hamish
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