function long setwindowlonga(ulong hwnd, int nindex, long dwnewlong) library "user32" function long getwindowlonga(ulong hwnd, int nindex) library "user32"
2. 建立一个response类型的窗口, 记住: controlmenu属性必须为false.
3. 在窗口的open事件里:
constant long gwl_style = -16
constant long ws_sysmenu = 524288 constant long ws_thickframe = 262144
long dwstyle dwstyle = getwindowlonga(handle(this), gwl_style)
