; USER32.DLL structures and constants

struc POINT
 {
   .x dd ?
   .y dd ?
 }

struc RECT
 {
   .left   dd ?
   .top    dd ?
   .right  dd ?
   .bottom dd ?
 }

struc WNDCLASS
 {
   .style	  dd ?
   .lpfnWndProc   dd ?
   .cbClsExtra	  dd ?
   .cbWndExtra	  dd ?
   .hInstance	  dd ?
   .hIcon	  dd ?
   .hCursor	  dd ?
   .hbrBackground dd ?
   .lpszMenuName  dd ?
   .lpszClassName dd ?
 }

struc WNDCLASSEX
 {
   .cbSize	  dd ?
   .style	  dd ?
   .lpfnWndProc   dd ?
   .cbClsExtra	  dd ?
   .cbWndExtra	  dd ?
   .hInstance	  dd ?
   .hIcon	  dd ?
   .hCursor	  dd ?
   .hbrBackground dd ?
   .lpszMenuName  dd ?
   .lpszClassName dd ?
   .hIconSm	  dd ?
   .size	  = $-.cbSize
 }

struc CREATESTRUCT
 {
   .lpCreateParams dd ?
   .hInstance	   dd ?
   .hMenu	   dd ?
   .hwndParent	   dd ?
   .cy		   dd ?
   .cx		   dd ?
   .y		   dd ?
   .x		   dd ?
   .style	   dd ?
   .lpszName	   dd ?
   .lpszClass	   dd ?
   .dwExStyle	   dd ?
 }

struc CLIENTCREATESTRUCT
 {
   .hWindowMenu  dd ?
   .idFirstChild dd ?
 }

struc MDICREATESTRUCT
 {
   .szClass dd ?
   .szTitle dd ?
   .hOwner  dd ?
   .x	    dd ?
   .y	    dd ?
   .cx	    dd ?
   .cy	    dd ?
   .style   dd ?
   .lParam  dd ?
 }

struc SCROLLINFO
 {
   .cbSize    dd ?
   .fMask     dd ?
   .nMin      dd ?
   .nMax      dd ?
   .nPage     dd ?
   .nPos      dd ?
   .nTrackPos dd ?
   .size      = $-.cbSize
 }

struc MSG
 {
   .hwnd    dd ?
   .message dd ?
   .wParam  dd ?
   .lParam  dd ?
   .time    dd ?
   .pt	    POINT
 }

struc MINMAXINFO
 {
   .ptReserved	   POINT
   .ptMaxSize	   POINT
   .ptMaxPosition  POINT
   .ptMinTrackSize POINT
   .ptMaxTrackSize POINT
 }

struc WINDOWPLACEMENT
 {
   .length	     dd ?
   .flags	     dd ?
   .showCmd	     dd ?
   .ptMinPosition    POINT
   .ptMaxPosition    POINT
   .rcNormalPosition RECT
   .size	     = $-.length
 }

struc WINDOWPOS
 {
   .hwnd	    dd ?
   .hwndInsertAfter dd ?
   .x		    dd ?
   .y		    dd ?
   .cx		    dd ?
   .cy		    dd ?
   .flags	    dd ?
 }

struc NMHDR
 {
   .hwndFrom dd ?
   .idFrom   dd ?
   .code     dd ?
 }

struc COPYDATASTRUCT
 {
   .dwData dd ?
   .cbData dd ?
   .lpData dd ?
 }

struc ACCEL
 {
    fVirt dw ?
    key   dw ?
    cmd   dw ?
 }

struc PAINTSTRUCT
 {
   .hdc 	dd ?
   .fErase	dd ?
   .rcPaint	RECT
   .fRestore	dd ?
   .fIncUpdate	dd ?
   .rgbReserved rb 32
 }

struc DRAWTEXTPARAMS
 {
   .cbSize	  dd ?
   .iTabLength	  dd ?
   .iLeftMargin   dd ?
   .iRightMargin  dd ?
   .uiLengthDrawn dd ?
   .size	  = $-.cbSize
 }

struc DRAWITEMSTRUCT
 {
   .CtlType    dd ?
   .CtlID      dd ?
   .itemID     dd ?
   .itemAction dd ?
   .itemState  dd ?
   .hwndItem   dd ?
   .hDC        dd ?
   .rcItem     RECT
   .itemData   dd ?
 }

; MessageBox type flags

MB_OK			= 000000h
MB_OKCANCEL		= 000001h
MB_ABORTRETRYIGNORE	= 000002h
MB_YESNOCANCEL		= 000003h
MB_YESNO		= 000004h
MB_RETRYCANCEL		= 000005h
MB_ICONHAND		= 000010h
MB_ICONQUESTION 	= 000020h
MB_ICONEXCLAMATION	= 000030h
MB_ICONASTERISK 	= 000040h
MB_USERICON		= 000080h
MB_ICONWARNING		= MB_ICONEXCLAMATION
MB_ICONERROR		= MB_ICONHAND
MB_ICONINFORMATION	= MB_ICONASTERISK
MB_ICONSTOP		= MB_ICONHAND
MB_DEFBUTTON1		= 000000h
MB_DEFBUTTON2		= 000100h
MB_DEFBUTTON3		= 000200h
MB_DEFBUTTON4		= 000300h
MB_APPLMODAL		= 000000h
MB_SYSTEMMODAL		= 001000h
MB_TASKMODAL		= 002000h
MB_HELP 		= 004000h
MB_NOFOCUS		= 008000h
MB_SETFOREGROUND	= 010000h
MB_DEFAULT_DESKTOP_ONLY = 020000h
MB_TOPMOST		= 040000h
MB_RIGHT		= 080000h
MB_RTLREADING		= 100000h
MB_SERVICE_NOTIFICATION = 200000h

; Conventional dialog box and message box command IDs

IDOK	 = 1
IDCANCEL = 2
IDABORT  = 3
IDRETRY  = 4
IDIGNORE = 5
IDYES	 = 6
IDNO	 = 7
IDCLOSE  = 8
IDHELP	 = 9

; Class styles

CS_VREDRAW	   = 00001h
CS_HREDRAW	   = 00002h
CS_KEYCVTWINDOW    = 00004h
CS_DBLCLKS	   = 00008h
CS_OWNDC	   = 00020h
CS_CLASSDC	   = 00040h
CS_PARENTDC	   = 00080h
CS_NOKEYCVT	   = 00100h
CS_SAVEBITS	   = 00800h
CS_NOCLOSE	   = 00200h
CS_BYTEALIGNCLIENT = 01000h
CS_BYTEALIGNWINDOW = 02000h
CS_PUBLICCLASS	   = 04000h
CS_GLOBALCLASS	   = CS_PUBLICCLASS
CS_IME		   = 10000h

; Windows styles

WS_OVERLAPPED	= 000000000h
WS_ICONICPOPUP	= 0C0000000h
WS_POPUP	= 080000000h
WS_CHILD	= 040000000h
WS_MINIMIZE	= 020000000h
WS_VISIBLE	= 010000000h
WS_DISABLED	= 008000000h
WS_CLIPSIBLINGS = 004000000h
WS_CLIPCHILDREN = 002000000h
WS_MAXIMIZE	= 001000000h
WS_CAPTION	= 000C00000h
WS_BORDER	= 000800000h
WS_DLGFRAME	= 000400000h
WS_VSCROLL	= 000200000h
WS_HSCROLL	= 000100000h
WS_SYSMENU	= 000080000h
WS_THICKFRAME	= 000040000h
WS_HREDRAW	= 000020000h
WS_VREDRAW	= 000010000h
WS_GROUP	= 000020000h
WS_TABSTOP	= 000010000h
WS_MINIMIZEBOX	= 000020000h
WS_MAXIMIZEBOX	= 000010000h

; Common Window Styles

WS_OVERLAPPEDWINDOW = WS_OVERLAPPED or WS_CAPTION or WS_SYSMENU or WS_THICKFRAME or WS_MINIMIZEBOX or WS_MAXIMIZEBOX
WS_POPUPWINDOW	    = WS_POPUP or WS_BORDER or WS_SYSMENU
WS_CHILDWINDOW	    = WS_CHILD
WS_TILEDWINDOW	    = WS_OVERLAPPEDWINDOW
WS_TILED	    = WS_OVERLAPPED
WS_ICONIC	    = WS_MINIMIZE
WS_SIZEBOX	    = WS_THICKFRAME

; Extended Window Styles

WS_EX_DLGMODALFRAME    = 00001h
WS_EX_DRAGOBJECT       = 00002h
WS_EX_NOPARENTNOTIFY   = 00004h
WS_EX_TOPMOST	       = 00008h
WS_EX_ACCEPTFILES      = 00010h
WS_EX_TRANSPARENT      = 00020h
WS_EX_MDICHILD	       = 00040h
WS_EX_TOOLWINDOW       = 00080h
WS_EX_WINDOWEDGE       = 00100h
WS_EX_CLIENTEDGE       = 00200h
WS_EX_CONTEXTHELP      = 00400h
WS_EX_RIGHT	       = 01000h
WS_EX_LEFT	       = 00000h
WS_EX_RTLREADING       = 02000h
WS_EX_LTRREADING       = 00000h
WS_EX_LEFTSCROLLBAR    = 04000h
WS_EX_RIGHTSCROLLBAR   = 00000h
WS_EX_CONTROLPARENT    = 10000h
WS_EX_STATICEDGE       = 20000h
WS_EX_APPWINDOW        = 40000h
WS_EX_OVERLAPPEDWINDOW = WS_EX_WINDOWEDGE or WS_EX_CLIENTEDGE
WS_EX_PALETTEWINDOW    = WS_EX_WINDOWEDGE or WS_EX_TOOLWINDOW or WS_EX_TOPMOST

; MDI client style bits

MDIS_ALLCHILDSTYLES = 1

; Special CreateWindow position value

CW_USEDEFAULT = 8000h

; Predefined window handle

HWND_DESKTOP   = 0

; ShowWindow commands

SW_HIDE 	   = 0
SW_SHOWNORMAL	   = 1
SW_NORMAL	   = 1
SW_SHOWMINIMIZED   = 2
SW_SHOWMAXIMIZED   = 3
SW_MAXIMIZE	   = 3
SW_SHOWNOACTIVATE  = 4
SW_SHOW 	   = 5
SW_MINIMIZE	   = 6
SW_SHOWMINNOACTIVE = 7
SW_SHOWNA	   = 8
SW_RESTORE	   = 9
SW_SHOWDEFAULT	   = 10

; SetWindowPos flags

SWP_NOSIZE	   = 0001h
SWP_NOMOVE	   = 0002h
SWP_NOZORDER	   = 0004h
SWP_NOREDRAW	   = 0008h
SWP_NOACTIVATE	   = 0010h
SWP_DRAWFRAME	   = 0020h
SWP_SHOWWINDOW	   = 0040h
SWP_HIDEWINDOW	   = 0080h
SWP_NOCOPYBITS	   = 0100h
SWP_NOREPOSITION   = 0200h
SWP_DEFERERASE	   = 2000h
SWP_ASYNCWINDOWPOS = 4000h

; SetWindowPos special handle values

HWND_TOP       = 0
HWND_BOTTOM    = 1
HWND_TOPMOST   = -1
HWND_NOTOPMOST = -2

; GetWindow flags

GW_HWNDFIRST = 0
GW_HWNDLAST  = 1
GW_HWNDNEXT  = 2
GW_HWNDPREV  = 3
GW_OWNER     = 4
GW_CHILD     = 5

; RedrawWindow flags

RDW_INVALIDATE	    = 0001h
RDW_INTERNALPAINT   = 0002h
RDW_ERASE	    = 0004h
RDW_VALIDATE	    = 0008h
RDW_NOINTERNALPAINT = 0010h
RDW_NOERASE	    = 0020h
RDW_NOCHILDREN	    = 0040h
RDW_ALLCHILDREN     = 0080h
RDW_UPDATENOW	    = 0100h
RDW_ERASENOW	    = 0200h
RDW_FRAME	    = 0400h
RDW_NOFRAME	    = 0800h

; PeekMessage Options

PM_NOREMOVE = 0000h
PM_REMOVE   = 0001h
PM_NOYIELD  = 0002h

; Window state messages

WM_STATE		  = 0000h
WM_NULL 		  = 0000h
WM_CREATE		  = 0001h
WM_DESTROY		  = 0002h
WM_MOVE 		  = 0003h
WM_SIZE 		  = 0005h
WM_ACTIVATE		  = 0006h
WM_SETFOCUS		  = 0007h
WM_KILLFOCUS		  = 0008h
WM_ENABLE		  = 000Ah
WM_SETREDRAW		  = 000Bh
WM_SETTEXT		  = 000Ch
WM_GETTEXT		  = 000Dh
WM_GETTEXTLENGTH	  = 000Eh
WM_PAINT		  = 000Fh
WM_CLOSE		  = 0010h
WM_QUERYENDSESSION	  = 0011h
WM_QUIT 		  = 0012h
WM_QUERYOPEN		  = 0013h
WM_ERASEBKGND		  = 0014h
WM_SYSCOLORCHANGE	  = 0015h
WM_ENDSESSION		  = 0016h
WM_SYSTEMERROR		  = 0017h
WM_SHOWWINDOW		  = 0018h
WM_CTLCOLOR		  = 0019h
WM_WININICHANGE 	  = 001Ah
WM_DEVMODECHANGE	  = 001Bh
WM_ACTIVATEAPP		  = 001Ch
WM_FONTCHANGE		  = 001Dh
WM_TIMECHANGE		  = 001Eh
WM_CANCELMODE		  = 001Fh
WM_SETCURSOR		  = 0020h
WM_MOUSEACTIVATE	  = 0021h
WM_CHILDACTIVATE	  = 0022h
WM_QUEUESYNC		  = 0023h
WM_GETMINMAXINFO	  = 0024h
WM_PAINTICON		  = 0026h
WM_ICONERASEBKGND	  = 0027h
WM_NEXTDLGCTL		  = 0028h
WM_SPOOLERSTATUS	  = 002Ah
WM_DRAWITEM		  = 002Bh
WM_MEASUREITEM		  = 002Ch
WM_DELETEITEM		  = 002Dh
WM_VKEYTOITEM		  = 002Eh
WM_CHARTOITEM		  = 002Fh
WM_SETFONT		  = 0030h
WM_GETFONT		  = 0031h
WM_QUERYDRAGICON	  = 0037h
WM_COMPAREITEM		  = 0039h
WM_COMPACTING		  = 0041h
WM_COMMNOTIFY		  = 0044h
WM_WINDOWPOSCHANGING	  = 0046h
WM_WINDOWPOSCHANGED	  = 0047h
WM_POWER		  = 0048h
WM_COPYDATA		  = 004Ah
WM_CANCELJOURNAL	  = 004Bh
WM_NOTIFY		  = 004Eh
WM_INPUTLANGCHANGEREQUEST = 0050h
WM_INPUTLANGCHANGE	  = 0051h
WM_TCARD		  = 0052h
WM_HELP 		  = 0053h
WM_USERCHANGED		  = 0054h
WM_NOTIFYFORMAT 	  = 0055h
WM_CONTEXTMENU		  = 007Bh
WM_STYLECHANGING	  = 007Ch
WM_STYLECHANGED 	  = 007Dh
WM_DISPLAYCHANGE	  = 007Eh
WM_GETICON		  = 007Fh
WM_SETICON		  = 0080h
WM_NCCREATE		  = 0081h
WM_NCDESTROY		  = 0082h
WM_NCCALCSIZE		  = 0083h
WM_NCHITTEST		  = 0084h
WM_NCPAINT		  = 0085h
WM_NCACTIVATE		  = 0086h
WM_GETDLGCODE		  = 0087h
WM_NCMOUSEMOVE		  = 00A0h
WM_NCLBUTTONDOWN	  = 00A1h
WM_NCLBUTTONUP		  = 00A2h
WM_NCLBUTTONDBLCLK	  = 00A3h
WM_NCRBUTTONDOWN	  = 00A4h
WM_NCRBUTTONUP		  = 00A5h
WM_NCRBUTTONDBLCLK	  = 00A6h
WM_NCMBUTTONDOWN	  = 00A7h
WM_NCMBUTTONUP		  = 00A8h
WM_NCMBUTTONDBLCLK	  = 00A9h
WM_KEYFIRST		  = 0100h
WM_KEYDOWN		  = 0100h
WM_KEYUP		  = 0101h
WM_CHAR 		  = 0102h
WM_DEADCHAR		  = 0103h
WM_SYSKEYDOWN		  = 0104h
WM_SYSKEYUP		  = 0105h
WM_SYSCHAR		  = 0106h
WM_SYSDEADCHAR		  = 0107h
WM_KEYLAST		  = 0108h
WM_INITDIALOG		  = 0110h
WM_COMMAND		  = 0111h
WM_SYSCOMMAND		  = 0112h
WM_TIMER		  = 0113h
WM_HSCROLL		  = 0114h
WM_VSCROLL		  = 0115h
WM_INITMENU		  = 0116h
WM_INITMENUPOPUP	  = 0117h
WM_MENUSELECT		  = 011Fh
WM_MENUCHAR		  = 0120h
WM_ENTERIDLE		  = 0121h
WM_MENURBUTTONUP	  = 0122h
WM_MENUDRAG		  = 0123h
WM_MENUGETOBJECT	  = 0124h
WM_UNINITMENUPOPUP	  = 0125h
WM_MENUCOMMAND		  = 0126h
WM_CTLCOLORMSGBOX	  = 0132h
WM_CTLCOLOREDIT 	  = 0133h
WM_CTLCOLORLISTBOX	  = 0134h
WM_CTLCOLORBTN		  = 0135h
WM_CTLCOLORDLG		  = 0136h
WM_CTLCOLORSCROLLBAR	  = 0137h
WM_CTLCOLORSTATIC	  = 0138h
WM_MOUSEFIRST		  = 0200h
WM_MOUSEMOVE		  = 0200h
WM_LBUTTONDOWN		  = 0201h
WM_LBUTTONUP		  = 0202h
WM_LBUTTONDBLCLK	  = 0203h
WM_RBUTTONDOWN		  = 0204h
WM_RBUTTONUP		  = 0205h
WM_RBUTTONDBLCLK	  = 0206h
WM_MBUTTONDOWN		  = 0207h
WM_MBUTTONUP		  = 0208h
WM_MBUTTONDBLCLK	  = 0209h
WM_MOUSEWHEEL		  = 020Ah
WM_MOUSELAST		  = 020Ah
WM_PARENTNOTIFY 	  = 0210h
WM_ENTERMENULOOP	  = 0211h
WM_EXITMENULOOP 	  = 0212h
WM_NEXTMENU		  = 0213h
WM_SIZING		  = 0214h
WM_CAPTURECHANGED	  = 0215h
WM_MOVING		  = 0216h
WM_POWERBROADCAST	  = 0218h
WM_DEVICECHANGE 	  = 0219h
WM_MDICREATE		  = 0220h
WM_MDIDESTROY		  = 0221h
WM_MDIACTIVATE		  = 0222h
WM_MDIRESTORE		  = 0223h
WM_MDINEXT		  = 0224h
WM_MDIMAXIMIZE		  = 0225h
WM_MDITILE		  = 0226h
WM_MDICASCADE		  = 0227h
WM_MDIICONARRANGE	  = 0228h
WM_MDIGETACTIVE 	  = 0229h
WM_MDISETMENU		  = 0230h
WM_ENTERSIZEMOVE	  = 0231h
WM_EXITSIZEMOVE 	  = 0232h
WM_DROPFILES		  = 0233h
WM_MDIREFRESHMENU	  = 0234h
WM_IME_SETCONTEXT	  = 0281h
WM_IME_NOTIFY		  = 0282h
WM_IME_CONTROL		  = 0283h
WM_IME_COMPOSITIONFULL	  = 0284h
WM_IME_SELECT		  = 0285h
WM_IME_CHAR		  = 0286h
WM_IME_KEYDOWN		  = 0290h
WM_IME_KEYUP		  = 0291h
WM_MOUSEHOVER		  = 02A1h
WM_MOUSELEAVE		  = 02A3h
WM_CUT			  = 0300h
WM_COPY 		  = 0301h
WM_PASTE		  = 0302h