App.stop(): clear window children only if window exists
App.stop(): clear window children only if window exists
kived/kivy,rafalo1333/kivy,darkopevec/kivy,KeyWeeUsr/kivy,LogicalDash/kivy,aron-bordin/kivy,rnixx/kivy,inclement/kivy,kivy/kivy,janssen/kivy,darkopevec/kivy,KeyWeeUsr/kivy,rafalo1333/kivy,jkankiewicz/kivy,jegger/kivy,autosportlabs/kivy,rafalo1333/kivy,Cheaterman/kivy,autosportlabs/kivy,bionoid/kivy,matham/kivy,manthansharma/kivy,kivy/kivy,bionoid/kivy,KeyWeeUsr/kivy,jegger/kivy,LogicalDash/kivy,janssen/kivy,bionoid/kivy,jegger/kivy,aron-bordin/kivy,bionoid/kivy,Cheaterman/kivy,Cheaterman/kivy,tony/kivy,jkankiewicz/kivy,darkopevec/kivy,akshayaurora/kivy,LogicalDash/kivy,rnixx/kivy,kived/kivy,aron-bordin/kivy,akshayaurora/kivy,kived/kivy,jegger/kivy,matham/kivy,tony/kivy,darkopevec/kivy,LogicalDash/kivy,tony/kivy,inclement/kivy,akshayaurora/kivy,manthansharma/kivy,autosportlabs/kivy,manthansharma/kivy,jkankiewicz/kivy,Cheaterman/kivy,manthansharma/kivy,janssen/kivy,matham/kivy,matham/kivy,inclement/kivy,kivy/kivy,jkankiewicz/kivy,aron-bordin/kivy,janssen/kivy,rnixx/kivy,KeyWeeUsr/kivy