diff --git a/zconstants_windows_amd64.go b/zconstants_windows_amd64.go
new file mode 100644
index 0000000..f1b0060
--- /dev/null
+++ b/zconstants_windows_amd64.go
@@ -0,0 +1,158 @@
+// autogenerated by windowsconstgen; do not edit
+package ui
+const _AC_SRC_ALPHA = 1
+const _AC_SRC_OVER = 0
+const _BCM_GETIDEALSIZE = 5633
+const _BI_RGB = 0
+const _BM_GETCHECK = 240
+const _BN_CLICKED = 0
+const _BST_CHECKED = 1
+const _BS_AUTOCHECKBOX = 3
+const _BS_PUSHBUTTON = 0
+const _CBS_AUTOHSCROLL = 64
+const _CBS_DROPDOWN = 2
+const _CBS_DROPDOWNLIST = 3
+const _CB_ADDSTRING = 323
+const _CB_DELETESTRING = 324
+const _CB_ERR = -1
+const _CB_ERRSPACE = -2
+const _CB_GETCOUNT = 326
+const _CB_GETCURSEL = 327
+const _CB_INSERTSTRING = 330
+const _COLOR_BTNFACE = 15
+const _CS_HREDRAW = 2
+const _CS_VREDRAW = 1
+const _CW_USEDEFAULT = -2147483648
+const _DIB_RGB_COLORS = 0
+const _ERROR = 0
+const _ES_AUTOHSCROLL = 128
+const _ES_PASSWORD = 32
+const _FALSE = 0
+const _GWL_STYLE = -16
+const _ICC_PROGRESS_CLASS = 32
+const _LBS_EXTENDEDSEL = 2048
+const _LBS_NOINTEGRALHEIGHT = 256
+const _LBS_NOTIFY = 1
+const _LB_ADDSTRING = 384
+const _LB_DELETESTRING = 386
+const _LB_ERR = -1
+const _LB_ERRSPACE = -2
+const _LB_GETCOUNT = 395
+const _LB_GETCURSEL = 392
+const _LB_GETSELCOUNT = 400
+const _LB_GETSELITEMS = 401
+const _LB_GETTEXT = 393
+const _LB_GETTEXTLEN = 394
+const _LB_INSERTSTRING = 385
+const _LF_FACESIZE = 32
+const _MA_ACTIVATE = 1
+const _MB_ICONERROR = 16
+const _MB_OK = 0
+const _MK_LBUTTON = 1
+const _MK_MBUTTON = 16
+const _MK_RBUTTON = 2
+const _MK_XBUTTON1 = 32
+const _MK_XBUTTON2 = 64
+const _PBM_SETMARQUEE = 1034
+const _PBM_SETPOS = 1026
+const _PBS_MARQUEE = 8
+const _PBS_SMOOTH = 1
+const _SB_HORZ = 0
+const _SB_LEFT = 6
+const _SB_LINELEFT = 0
+const _SB_LINERIGHT = 1
+const _SB_PAGELEFT = 2
+const _SB_PAGERIGHT = 3
+const _SB_RIGHT = 7
+const _SB_THUMBPOSITION = 4
+const _SB_THUMBTRACK = 5
+const _SB_VERT = 1
+const _SIF_PAGE = 2
+const _SIF_POS = 4
+const _SIF_RANGE = 1
+const _SIF_TRACKPOS = 16
+const _SM_CXDOUBLECLK = 36
+const _SM_CYDOUBLECLK = 37
+const _SPI_GETNONCLIENTMETRICS = 41
+const _SRCCOPY = 13369376
+const _SS_LEFTNOWORDWRAP = 12
+const _SS_NOPREFIX = 128
+const _STARTF_USESHOWWINDOW = 1
+const _SW_ERASE = 4
+const _SW_HIDE = 0
+const _SW_INVALIDATE = 2
+const _SW_SHOW = 5
+const _SW_SHOWDEFAULT = 10
+const _TRUE = 1
+const _VK_ADD = 107
+const _VK_CONTROL = 17
+const _VK_DELETE = 46
+const _VK_DIVIDE = 111
+const _VK_DOWN = 40
+const _VK_END = 35
+const _VK_ESCAPE = 27
+const _VK_F1 = 112
+const _VK_F10 = 121
+const _VK_F11 = 122
+const _VK_F12 = 123
+const _VK_F2 = 113
+const _VK_F3 = 114
+const _VK_F4 = 115
+const _VK_F5 = 116
+const _VK_F6 = 117
+const _VK_F7 = 118
+const _VK_F8 = 119
+const _VK_F9 = 120
+const _VK_HOME = 36
+const _VK_INSERT = 45
+const _VK_LEFT = 37
+const _VK_LWIN = 91
+const _VK_MENU = 18
+const _VK_MULTIPLY = 106
+const _VK_NEXT = 34
+const _VK_PRIOR = 33
+const _VK_RETURN = 13
+const _VK_RIGHT = 39
+const _VK_RWIN = 92
+const _VK_SHIFT = 16
+const _VK_SUBTRACT = 109
+const _VK_UP = 38
+const _WM_ACTIVATE = 6
+const _WM_APP = 32768
+const _WM_CLOSE = 16
+const _WM_COMMAND = 273
+const _WM_ERASEBKGND = 20
+const _WM_GETMINMAXINFO = 36
+const _WM_GETTEXT = 13
+const _WM_GETTEXTLENGTH = 14
+const _WM_HSCROLL = 276
+const _WM_KEYDOWN = 256
+const _WM_KEYUP = 257
+const _WM_LBUTTONDOWN = 513
+const _WM_LBUTTONUP = 514
+const _WM_MBUTTONDOWN = 519
+const _WM_MBUTTONUP = 520
+const _WM_MOUSEACTIVATE = 33
+const _WM_MOUSEMOVE = 512
+const _WM_PAINT = 15
+const _WM_RBUTTONDOWN = 516
+const _WM_RBUTTONUP = 517
+const _WM_SETFONT = 48
+const _WM_SIZE = 5
+const _WM_SYSKEYDOWN = 260
+const _WM_SYSKEYUP = 261
+const _WM_VSCROLL = 277
+const _WM_XBUTTONDOWN = 523
+const _WM_XBUTTONUP = 524
+const _WS_CHILD = 1073741824
+const _WS_EX_CLIENTEDGE = 512
+const _WS_HSCROLL = 1048576
+const _WS_OVERLAPPEDWINDOW = 13565952
+const _WS_TABSTOP = 65536
+const _WS_VISIBLE = 268435456
+const _WS_VSCROLL = 2097152
+const _HWND_MESSAGE = 18446744073709551613
+const _IDC_ARROW = 32512
+const _IDI_APPLICATION = 32512
+const _INVALID_HANDLE_VALUE = 18446744073709551615
+const _NULL = 0