WINDOW_LONG_PTR_INDEX
GWL_EXSTYLE = -20
GWL_HINSTANCE = -6
GWL_HWNDPARENT = -8
GWL_ID = -12
GWL_STYLE = -16
GWL_USERDATA = -21
GWL_WNDPROC = -4
GWLP_HINSTANCE = -6
GWLP_HWNDPARENT = -8
GWLP_ID = -12
GWLP_USERDATA = -21
GWLP_WNDPROC = -4