MainForm上加PageControl1,把PageControl1的DockSite设为True, 把窗口FB_orderManage的DragKind设为dkDock, DragMode设为dmAuromatic
在MainForm中调用：
FB_orderManage:= TFB_orderManage.Create(self);
FB_orderManage.ManualDock(PageControl1,nil,alclient);
FB_orderManage.FormStyle:=fsStayOnTop;
FB_orderManage.Show;
FB_orderManage.Visible := True;标签：PageControl1,设为,窗口,delphi,orderManage,FB,True,页面 From： https://www.cnblogs.com/sixty-five/p/17220135.html