EnableExplicit

If OpenWindow(0,0,0,500,250,"Window",#PB_Window_SystemMenu|#PB_Window_ScreenCentered)
  ExplorerComboGadget(1,10,10,100,20,"C:\",0)
  
  SendMessage_(GadgetID(1),#CB_SETITEMHEIGHT,0,50)
Repeat : Until WaitWindowEvent() = #PB_Event_CloseWindow
EndIf