<table><tr><td style="">graesslin added a comment.
</td><a style="text-decoration: none; padding: 4px 8px; margin: 0 8px 8px; float: right; color: #464C5C; font-weight: bold; border-radius: 3px; background-color: #F7F7F9; background-image: linear-gradient(to bottom,#fff,#f1f0f1); display: inline-block; border: 1px solid rgba(71,87,120,.2);" href="https://phabricator.kde.org/D6630" rel="noreferrer">View Revision</a></tr></table><br /><div><div><blockquote style="border-left: 3px solid #8C98B8;
color: #6B748C;
font-style: italic;
margin: 4px 0 12px 0;
padding: 8px 12px;
background-color: #F8F9FC;">
<div style="font-style: normal;
padding-bottom: 4px;">In <a href="https://phabricator.kde.org/D6630#124201" style="background-color: #e7e7e7;
border-color: #e7e7e7;
border-radius: 3px;
padding: 0 4px;
font-weight: bold;
color: black;text-decoration: none;" rel="noreferrer">D6630#124201</a>, <a href="https://phabricator.kde.org/p/davidedmundson/" style="
border-color: #f1f7ff;
color: #19558d;
background-color: #f1f7ff;
border: 1px solid transparent;
border-radius: 3px;
font-weight: bold;
padding: 0 4px;" rel="noreferrer">@davidedmundson</a> wrote:</div>
<div style="margin: 0;
padding: 0;
border: 0;
color: rgb(107, 116, 140);"><p>Whilst this does make sense based on the current design we are effectively building up dead objects during the lifespan of a window doing show/hide/show.</p></div>
</blockquote>
<p>Well it was designed when Qt didn't behave like that :-(</p>
<blockquote style="border-left: 3px solid #a7b5bf; color: #464c5c; font-style: italic; margin: 4px 0 12px 0; padding: 4px 12px; background-color: #f8f9fc;"><p>Someone somewhere should delete it. Assuming everyone follows the same design pattern of following QWindow::hideEvent everyone calling deleteLater() would be safe, but it relies on all parties dealing with surfaces to do that.</p></blockquote>
<p>No it wouldn't, because KWin doesn't behave like Qt. KWin does not delete a surface when a window gets hidden, but reuses it. Basically KWin behaves exactly as Qt used to, the pattern was taken from QtWayland. Now this diverged.</p>
<p>A possibility could be QSharedPointer, so that every user can discard it's own instance, but that requires also changes all over the place.</p></div></div><br /><div><strong>REPOSITORY</strong><div><div>R31 Breeze</div></div></div><br /><div><strong>BRANCH</strong><div><div>master</div></div></div><br /><div><strong>REVISION DETAIL</strong><div><a href="https://phabricator.kde.org/D6630" rel="noreferrer">https://phabricator.kde.org/D6630</a></div></div><br /><div><strong>To: </strong>graesslin, Plasma, mart, davidedmundson<br /><strong>Cc: </strong>plasma-devel, ZrenBot, progwolff, lesliezhai, ali-mohamed, jensreuterberg, abetts, sebas, apol, mart, lukas<br /></div>