Rename it to "Translucent Background", as that's what the example shows how to do. And modern applications shouldn't use a (binary) mask to create shaped windows. Instead, set the TranslucentBackground attribute, don't paint pixels that should be fully transparent and use anti-aliased or semi-opaque painting for pixels that should be translucent. Adjust the example and documentation accordingly. Move the statment that widget masks create coarse visual clipping to the QWidget::setMask documentation. Pick-to: 6.5 Change-Id: Id49d854093f2cb471afb178d32723081c7543543 Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>