How is qvariant implemented

Active Oldest Votes. Improve this answer. As additional overhead, it also needs to store what the underlying type is. At least as of now, it has a pimpl. At least, that is what sizeof tells me. I have not counted them by hand. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown. The Overflow Blog.

Thank you! Is there a possibility to add this functionality to list types. The conversion to List1 works. Is this possible? That information is currently not available, but may be made available in the future:. I was going berserk trying to read the correct object from Qvariant in a multi-object system, and what you described enabled me to solve my problem interfacing Qt4 and VTK.

You are commenting using your WordPress. You are commenting using your Google account. You are commenting using your Twitter account. You are commenting using your Facebook account. Notify me of new comments via email. Notify me of new posts via email. Blog at WordPress. Steveire's Blog Dreamer, but not the only one. ODR compromise ». Problem statement One issue was that when using custom types, the only type you can extract from a QVariant is the type you put in.

You can only use features you know about. Share this: Email. Like this: Like Loading Leave a Reply Cancel reply Enter your comment here Fill in your details below or click an icon to log in:. Email required Address never made public. Name required. Follow Following. QVariant :: Map ,. QVariant :: List ,. QVariant :: String ,.

QVariant :: StringList ,. QVariant :: Font ,. QVariant :: Pixmap ,. QVariant :: Brush ,. QVariant :: Rect ,. QVariant :: Size ,. QVariant :: Color ,. QVariant :: Palette ,. QVariant :: Icon ,. QVariant :: Point ,. QVariant :: Image ,. QVariant :: Int ,. QVariant :: UInt ,. QVariant :: Bool ,.

QVariant :: Double ,. QVariant :: Polygon ,. QVariant :: Region ,. QVariant :: Bitmap ,. QVariant :: Cursor ,. QVariant :: SizePolicy ,.