Hi! I have rewritten my Qt->glib main event loop patch completely. It adds an optional "-glibmainloop" switch to the ./configure script of Qt, which integrates a modified QEventloop as a GSource into glib main loop. http://www.scheinwelt.at/~norbertf/common_main_loop/ I have tested lots of KDE applications with the patched Qt, including the whole KDE desktop. Seems to work quite well. Additionally there is the "QtGtk Crossover Demo", which runs both toolkits (Qt and GTK+) in the same process and the same main loop (without blocking each other). The main benefit of joining the mainloops would be * common asynchronous infrastructure libraries * in-process plugins or components (like having desktop adaptive file-dialogs). * linking with libraries which were developed for other toolkits Btw - I'm not sure if other frameworks have already been ported to glib-main-loop, like OpenOffice.org (UNO?) and Mozilla... regards, Norbert