[Qt-interest] only a part of a widget as transparent

[Nitin Mahajan]

--- On Tue, 15/12/09, Raja Rokkam <rokkamraja at gmail.com> wrote:

> From: Raja Rokkam <rokkamraja at gmail.com>
> Subject: Re: [Qt-interest] only a part of a widget as transparent
> To: nitinm76 at yahoo.com
> Cc: qt-interest at trolltech.com
> Date: Tuesday, 15 December, 2009, 1:42 PM
> well I havent tried it and so really cannot
> comment on using setMask(). But looking at documentation, I
> am not sure if it will be possible.

Just tried that and it is possible. Suppose you have two widgets w1 and w2 and say w1 is on top of w2.

Now if you want to punch a hole in w2,in the region where w1 and w2 intersect, take the xored region of the two widgets and set the xored region as mask on w2.

regards

-Nitin
> 
> Can you tell me your exact usecase as to why you need this
> ? 
> 
> -Raja.
> 
> 
> On Tue, Dec 15, 2009 at 1:27 PM,
> Nitin Mahajan <nitinm76 at yahoo.com>
> wrote:
> 
> 
> 
> 
> 
> --- On Tue, 15/12/09, Raja Rokkam <rokkamraja at gmail.com>
> wrote:
> 
> 
> 
> > From: Raja Rokkam <rokkamraja at gmail.com>
> 
> > Subject: Re: [Qt-interest] only a part of a widget as
> transparent
> 
> > To: nitinm76 at yahoo.com
> 
> > Cc: qt-interest at trolltech.com
> 
> > Date: Tuesday, 15 December, 2009, 12:39 PM
> 
> 
> 
> How to do it using QWidget::setMask()?
> 
> 
> 
> regards
> 
> 
> 
> -Nitin
> 
> 
> 
> > add another widget on part you want to make
> 
> > transparent and set the window flag
> 
> > setAttribute(Qt::WA_TranslucentBackground);
> 
> >
> 
> > On Tue, Dec 15, 2009 at 12:09 PM,
> 
> > Nitin Mahajan <nitinm76 at yahoo.com>
> 
> > wrote:
> 
> >
> 
> > How to make, only a part of a
> 
> > widget as transparent?
> 
> >
> 
> >
> 
> >
> 
> > regards
> 
> >
> 
> >
> 
> >
> 
> > -Nitin
> 
> >
> 
> >
> 
> >
> 
> >
> 
> >
> 
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> 
> > _______________________________________________
> 
> >
> 
> > Qt-interest mailing list
> 
> >
> 
> > Qt-interest at trolltech.com
> 
> >
> 
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> 
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> >
> 
> >
> 
> >
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> 
> 
> 
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