在学API，突然想用一些没用过的来学习了解下，在网上查到声明是这样的：
Private Declare Function CascadeWindows Lib "user32" (ByVal hwndParent As Long, ByVal wHow As Long, ByVal lpRect As RECT, ByVal cKids As Long, lpKids As Long) As Integer
但是实在用到例子上就不知道怎样下手了，有大手可以讲解下么，或者是针对CascadeWindows 给个简单的例子么？

层叠窗口，vb6的话有【MDIForm1.Arrange】可用。
Private Declare Function CascadeWindows Lib "user32" (ByVal hwndParent As Long, ByVal wHow As Long,  lpRect As any, ByVal cKids As Long, lpKids As Long) As Integer