How to make QDialog transparent in windows 7/10 ?
I have below code
which gives me transparent window in linux. But the same gives black background in windows. How to achieve the transparency in windows also ?
It would only work for me on win 7 if i set
but then it looses its border/caption.
I don't know how we will solve this. I tried many solutions but all fails and partially fixed. Finally i reported an issue QTBUG-65969
I moved to linux so didn't try a lot but i also tried
palette but had no luck with Dialogs.
Now you can only use Win32 api with Qt for that.
I gave up.
I got this from support.
I wonder how I have never noticed that before. It seems to not clear the buffer after moving. Strange flickering that occurs while moving is because there is double (or triple) buffering where each buffer seems to have separate copy of the view. Note that transparency does not always work. Windows does not support transparent OpenGL windows and Qt achieves this through DWM effects. DWM effects can be disabled on some machines, which would lead to just a solid black background. I am thinking this could even be a side effect of DWM and maybe has nothing to do with Qt actually. How ever, is there a reason why you want frames and a transparent background? This does not happen if you do this to the Window (/ApplicationWindow and for widget, there is similar flag): flags: Qt.FramelessWindowHint
It got me thinking - no. I didn't need it that much.
It's a windows thing - I'm used to it disappointing me now.
I plan on supporting windows but pushing linux or linux/boot2qt solution.