Qt 5.4.0 has broken inter-application drag and drop support as noted in the LXQt 0.9.0 release announcement[1][2]. There is a fix merged for Qt 5.4.1[3]. This is needed for expected functionality in x11-misc/pcmanfm-qt. Can we forward port this fix to our 5.4.0 ebuild? 1: http://sourceforge.net/p/lxde/mailman/message/33373317/ 2: http://bugreports.qt.io/browse/QTBUG-43436 3: https://codereview.qt-project.org/#/c/103221/
"Meeting minutes from Qt Release Team meeting 2nd Feb 2015 Qt 5.4.1 status * Plan is to put Qt5.4.1 out soon, hoping already during next week" http://lists.qt-project.org/pipermail/releasing/2015-February/001891.html
I suppose you mean *back* port. Feel free to apply the patch, but unless it's urgent, I suggest waiting for 5.4.1, it should be out next week.
5.4.1 is in tree now.