EnableExplicit Define EventID If OpenWindow(0,0,0,500,400,"Window",#PB_Window_SystemMenu|#PB_Window_ScreenCentered) CheckBoxGadget(1,10,10,100,20,"CheckBox",0) SetWindowLongPtr_(GadgetID(1),#GWL_EXSTYLE,GetWindowLongPtr_(GadgetID(1),#GWL_EXSTYLE)|#WS_EX_CLIENTEDGE) SetWindowPos_(GadgetID(1),0,0,0,0,0,#SWP_NOZORDER|#SWP_NOMOVE|#SWP_NOSIZE|#SWP_FRAMECHANGED) Repeat EventID=WaitWindowEvent() If EventID = #PB_Event_CloseWindow End EndIf ForEver EndIf