[Gtk] Fix calculation of screen coordinates
[Gtk] Fix calculation of screen coordinates
mminns/xwt,antmicro/xwt,steffenWi/xwt,mono/xwt,directhex/xwt,residuum/xwt,hamekoz/xwt,iainx/xwt,akrisiun/xwt,sevoku/xwt,hwthomas/xwt,lytico/xwt,mminns/xwt,cra0zy/xwt,TheBrainTech/xwt