@M4RZB4Ni Hi its all in here http://doc.qt.io/qt-5/qscrollbar.html#details But connecting to a random widget will do nothing. IF u have this case, user click on Tab In tab there are many widget so he need to scroll to see last of them, then u just use a scroll area and put all stuff inside. then it will just work. ScrollArea have scrollbars. U can control if both horz and vert or just horz.