Qt助手里面是这样说的吧:
Note that if a widget is set as modified, all its ancestors will also be set as modified. However, if you call setWindowModified(false) on a widget, this will not propagate to its parent because other children of the parent might have been modified.
看看我有无理解错误:
注: 如果一个窗口部件设置为被修改,那么它所有的祖先也会被设置为被修改. 不过,如果你在这个部件上调用setWindowModified(false),那么它不会影响它的父对象,因为它的父亲还有其他子对象已经被改变...
按它的说法就是子对象call setWindowModified(true),那么父对象的windowModified属性也会改变吧?? 还是要怎么理解???
