Fix: set mainwindow as target of devtool button
Fix: set mainwindow as target of devtool button

syncsyncsynchalt/poi,syncsyncsynchalt/poi,syncsyncsynchalt/poi,yudachi/poi,gnattu/poi,syncsyncsynchalt/poi,PHELiOX/poi,poooi/poi,yudachi/poi,poooi/poi,poooi/poi,poooi/poi,yudachi/poi,PHELiOX/poi,gnattu/poi