创建非模态属性表，有OK和Cancel按钮，没有应用按钮。关闭时保存属性表的位置，下次打开时不会出现在相同的位置，类似非模态对话框。-This Project Create ModelessPropertySheet which has OK and Cancel Button, and hasn t Apply Button. Save PropertySheet position when you clost it so that PropertySheet doesn t app