Semi transparent overlay with opaque child widgets

[y.s.bisht]

Hi All,

I want to create opaque child widget over semi transparent parent widget.

If I so setWindowOpacity(.4) parent become transparent and same is propagated to child, I tired with setstylesheet

QString qStrStyleSheet(QString("  QDialog {\
								   background-color: rgba(100,100,100,20%);\
								   }"));
 
	setStyleSheet(qStrStyleSheet);

QString qStrStyleSheet(QString("  QDialog {\
								   background-color: rgba(100,100,100,20%);\
								   }"));
	
	setStyleSheet(qStrStyleSheet);

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but was not able to draw it properly, what I saw was black parent (opaque).

I also tried using

setAttribute(Qt::WA_TranslucentBackground, true); 
setWindowFlags(Qt::FramelessWindowHint)

setAttribute(Qt::WA_TranslucentBackground, true); 
setWindowFlags(Qt::FramelessWindowHint)

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, this gives exact behavior but parent is transparent, however I want it to be semi-transparent (40%).

I have also tried overwriting paintEvent

QPalette palette;
palette.setColor(backgroundRole(), QColor(194,194,194,40));
setPalette(palette);

QPalette palette;
palette.setColor(backgroundRole(), QColor(194,194,194,40));
setPalette(palette);

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After searching in google I came across this link , still it's not working for me.

I am using Qt-4.6 with windows-7

Can anyone help me with this.