/*****************************************************************************\
*                                                                             *
* windowsx.h -  Macro APIs, window message crackers, and control APIs         *
*                                                                             *
*               Version 3.10                                                  *
*                                                                             *
\*****************************************************************************/

#ifndef __WINDOWSX_H    /* prevent multiple includes */
#define __WINDOWSX_H

#ifndef __WINDOWS_H
#include <windows.h>    /* <windows.h> must be included */
#endif  /* __WINDOWS_H */

#ifndef RC_INVOKED
#pragma option -a-      /* Assume byte packing throughout */
#endif  /* RC_INVOKED */

#ifdef __cplusplus
extern "C" {            /* Assume C declarations for C++ */
#endif  /* __cplusplus */

/****** KERNEL Macro APIs ****************************************************/

#define     GetInstanceModule(hInstance) \
                GetModuleHandle((LPCSTR)MAKELP(0, hInstance))

#define     GlobalPtrHandle(lp)         \
                ((HGLOBAL)LOWORD(GlobalHandle(SELECTOROF(lp))))

#define     GlobalLockPtr(lp)           \
                ((BOOL)SELECTOROF(GlobalLock(GlobalPtrHandle(lp))))
#define     GlobalUnlockPtr(lp)         \
                GlobalUnlock(GlobalPtrHandle(lp))

#define     GlobalAllocPtr(flags, cb)   \
                (GlobalLock(GlobalAlloc((flags), (cb))))
#define     GlobalReAllocPtr(lp, cbNew, flags)  \
                (GlobalUnlockPtr(lp), GlobalLock(GlobalReAlloc(GlobalPtrHandle(lp) , (cbNew), (flags))))
#define     GlobalFreePtr(lp)           \
                (GlobalUnlockPtr(lp), (BOOL)GlobalFree(GlobalPtrHandle(lp)))

/****** GDI Macro APIs *******************************************************/

#define     DeletePen(hpen)         DeleteObject((HGDIOBJ)(HPEN)(hpen))
#define     SelectPen(hdc, hpen)    ((HPEN)SelectObject((hdc), (HGDIOBJ)(HPEN)(hpen)))
#define     GetStockPen(i)          ((HPEN)GetStockObject(i))

#define     DeleteBrush(hbr)        DeleteObject((HGDIOBJ)(HBRUSH)(hbr))
#define     SelectBrush(hdc, hbr)   ((HBRUSH)SelectObject((hdc), (HGDIOBJ)(HBRUSH)(hbr)))
#define     GetStockBrush(i)        ((HBRUSH)GetStockObject(i))

#define     DeleteRgn(hrgn)         DeleteObject((HGDIOBJ)(HRGN)(hrgn))

#define     CopyRgn(hrgnDst, hrgnSrc)               CombineRgn(hrgnDst, hrgnSrc, 0, RGN_COPY)
#define     IntersectRgn(hrgnResult, hrgnA, hrgnB)  CombineRgn(hrgnResult, hrgnA, hrgnB, RGN_AND)
#define     SubtractRgn(hrgnResult, hrgnA, hrgnB)   CombineRgn(hrgnResult, hrgnA, hrgnB, RGN_DIFF)
#define     UnionRgn(hrgnResult, hrgnA, hrgnB)      CombineRgn(hrgnResult, hrgnA, hrgnB, RGN_OR)
#define     XorRgn(hrgnResult, hrgnA, hrgnB)        CombineRgn(hrgnResult, hrgnA, hrgnB, RGN_XOR)

#define     DeletePalette(hpal)     DeleteObject((HGDIOBJ)(HPALETTE)(hpal))

#define     DeleteFont(hfont)       DeleteObject((HGDIOBJ)(HFONT)(hfont))
#define     SelectFont(hdc, hfont)  ((HFONT)SelectObject((hdc), (HGDIOBJ)(HFONT)(hfont)))
#define     GetStockFont(i)         ((HFONT)GetStockObject(i))

#define     DeleteBitmap(hbm)       DeleteObject((HGDIOBJ)(HBITMAP)(hbm))
#define     SelectBitmap(hdc, hbm)  ((HBITMAP)SelectObject((hdc), (HGDIOBJ)(HBITMAP)(hbm)))

#define     InsetRect(lprc, dx, dy) InflateRect((lprc), -(dx), -(dy))

/****** USER Macro APIs ******************************************************/

#define     GetWindowInstance(hwnd) ((HINSTANCE)GetWindowWord(hwnd, GWW_HINSTANCE))

#define     GetWindowStyle(hwnd)    ((DWORD)GetWindowLong(hwnd, GWL_STYLE))
#define     GetWindowExStyle(hwnd)  ((DWORD)GetWindowLong(hwnd, GWL_EXSTYLE))

#define     GetWindowOwner(hwnd)    GetWindow(hwnd, GW_OWNER)

#define     GetFirstChild(hwnd)     GetTopWindow(hwnd)
#define     GetFirstSibling(hwnd)   GetWindow(hwnd, GW_HWNDFIRST)
#define     GetLastSibling(hwnd)    GetWindow(hwnd, GW_HWNDLAST)
#define     GetNextSibling(hwnd)    GetWindow(hwnd, GW_HWNDNEXT)
#define     GetPrevSibling(hwnd)    GetWindow(hwnd, GW_HWNDPREV)

#define     GetWindowID(hwnd)       GetDlgCtrlID(hwnd)

#define     SetWindowRedraw(hwnd, fRedraw)  \
                    ((void)SendMessage(hwnd, WM_SETREDRAW, (WPARAM)(BOOL)(fRedraw), 0L))

#define     SubclassWindow(hwnd, lpfn)  \
                ((WNDPROC)SetWindowLong((hwnd), GWL_WNDPROC, (LPARAM)(WNDPROC)(lpfn)))

#define     IsMinimized(hwnd)   IsIconic(hwnd)
#define     IsMaximized(hwnd)   IsZoomed(hwnd)
#define     IsRestored(hwnd)    ((GetWindowStyle(hwnd) & (WS_MINIMIZE | WS_MAXIMIZE)) == 0L)

#define     SetWindowFont(hwnd, hfont, fRedraw) FORWARD_WM_SETFONT((hwnd), (hfont), (fRedraw), SendMessage)

#define     GetWindowFont(hwnd)                 FORWARD_WM_GETFONT((hwnd), SendMessage)

#if defined(WINVER) && (WINVER >= 0x030a)
#define     MapWindowRect(hwndFrom, hwndTo, lprc) \
                    MapWindowPoints((hwndFrom), (hwndTo), (POINT FAR*)(lprc), 2)
#endif  /* WINVER >= 0x030a */

#define     IsLButtonDown()     (GetKeyState(VK_LBUTTON) < 0)
#define     IsRButtonDown()     (GetKeyState(VK_RBUTTON) < 0)
#define     IsMButtonDown()     (GetKeyState(VK_MBUTTON) < 0)

#define     SubclassDialog(hwndDlg, lpfn) \
                ((DLGPROC)SetWindowLong(hwndDlg, DWL_DLGPROC, (LPARAM)(DLGPROC)(lpfn)))

#define     SetDlgMsgResult(hwnd, msg, result)   \
    (((msg) == WM_CTLCOLOR || (msg) == WM_COMPAREITEM || (msg) == WM_VKEYTOITEM ||  \
    (msg) == WM_CHARTOITEM || (msg) == WM_QUERYDRAGICON || (msg) == WM_INITDIALOG)  \
    ? (BOOL)LOWORD(result) : (SetWindowLong((hwnd), DWL_MSGRESULT, (LPARAM)(LRESULT)(result)), TRUE))

#define     DefDlgProcEx(hwnd, msg, wParam, lParam, pfRecursion) \
    (*(pfRecursion) = TRUE, DefDlgProc(hwnd, msg, wParam, lParam))

#define     CheckDefDlgRecursion(pfRecursion) \
    if (*(pfRecursion)) { *(pfRecursion) = FALSE; return FALSE; }

/****** Message crackers ****************************************************/

#define HANDLE_MSG(hwnd, message, fn)    \
    case (message): return HANDLE_##message((hwnd), (wParam), (lParam), (fn))

/* void Cls_OnCompacting(HWND hwnd, UINT compactRatio); */
#define HANDLE_WM_COMPACTING(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam)), 0L)
#define FORWARD_WM_COMPACTING(hwnd, compactRatio, fn) \
    (void)(fn)((hwnd), WM_COMPACTING, (WPARAM)(UINT)(compactRatio), 0L)

/* void Cls_OnWinIniChange(HWND hwnd, LPCSTR lpszSectionName); */
#define HANDLE_WM_WININICHANGE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (LPCSTR)(lParam)), 0L)
#define FORWARD_WM_WININICHANGE(hwnd, lpszSectionName, fn) \
    (void)(fn)((hwnd), WM_WININICHANGE, 0, (LPARAM)(LPCSTR)(lpszSectionName))

/* void Cls_OnSysColorChange(HWND hwnd); */
#define HANDLE_WM_SYSCOLORCHANGE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_SYSCOLORCHANGE(hwnd, fn) \
    (void)(fn)((hwnd), WM_SYSCOLORCHANGE, 0, 0L)

/* BOOL Cls_OnQueryNewPalette(HWND hwnd); */
#define HANDLE_WM_QUERYNEWPALETTE(hwnd, wParam, lParam, fn) \
    MAKELRESULT((BOOL)(fn)(hwnd), 0)
#define FORWARD_WM_QUERYNEWPALETTE(hwnd, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_QUERYNEWPALETTE, 0, 0L)

/* void Cls_OnPaletteIsChanging(HWND hwnd, HWND hwndPaletteChange); */
#define HANDLE_WM_PALETTEISCHANGING(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_PALETTEISCHANGING(hwnd, hwndPaletteChange, fn) \
    (void)(fn)((hwnd), WM_PALETTEISCHANGING, (WPARAM)(HWND)(hwndPaletteChange), 0L)

/* void Cls_OnPaletteChanged(HWND hwnd, HWND hwndPaletteChange); */
#define HANDLE_WM_PALETTECHANGED(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_PALETTECHANGED(hwnd, hwndPaletteChange, fn) \
    (void)(fn)((hwnd), WM_PALETTECHANGED, (WPARAM)(HWND)(hwndPaletteChange), 0L)

/* void Cls_OnFontChange(HWND hwnd); */
#define HANDLE_WM_FONTCHANGE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_FONTCHANGE(hwnd, fn) \
    (void)(fn)((hwnd), WM_FONTCHANGE, 0, 0L)

/* void Cls_OnSpoolerStatus(HWND hwnd, UINT status, int cJobInQueue); */
#define HANDLE_WM_SPOOLERSTATUS(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_SPOOLERSTATUS(hwnd, status, cJobInQueue, fn) \
    (void)(fn)((hwnd), WM_SPOOLERSTATUS, (WPARAM)(status), MAKELPARAM((UINT)(cJobInQueue), 0))

/* void Cls_OnDevModeChange(HWND hwnd, LPCSTR lpszDeviceName); */
#define HANDLE_WM_DEVMODECHANGE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (LPCSTR)(lParam)), 0L)
#define FORWARD_WM_DEVMODECHANGE(hwnd, lpszDeviceName, fn) \
    (void)(fn)((hwnd), WM_DEVMODECHANGE, 0,(LPARAM)(LPCSTR)(lpszDeviceName))

/* void Cls_OnTimeChange(HWND hwnd); */
#define HANDLE_WM_TIMECHANGE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_TIMECHANGE(hwnd, fn) \
    (void)(fn)((hwnd), WM_TIMECHANGE, 0, 0L)

/* void Cls_OnPower(HWND hwnd, int code); */
#define HANDLE_WM_POWER(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam)), 0L)
#define FORWARD_WM_POWER(hwnd, code, fn) \
    (void)(fn)((hwnd), WM_POWER, (WPARAM)(code), 0L)

/* BOOL Cls_OnQueryEndSession(HWND hwnd); */
#define HANDLE_WM_QUERYENDSESSION(hwnd, wParam, lParam, fn) \
    MAKELRESULT((BOOL)(fn)(hwnd), 0)
#define FORWARD_WM_QUERYENDSESSION(hwnd, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_QUERYENDSESSION, 0, 0L)

/* void Cls_OnEndSession(HWND hwnd, BOOL fEnding); */
#define HANDLE_WM_ENDSESSION(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam)), 0L)
#define FORWARD_WM_ENDSESSION(hwnd, fEnding, fn) \
    (void)(fn)((hwnd), WM_ENDSESSION, (WPARAM)(BOOL)(fEnding), 0L)

/* void Cls_OnQuit(HWND hwnd, int exitCode); */
#define HANDLE_WM_QUIT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam)), 0L)
#define FORWARD_WM_QUIT(hwnd, exitCode, fn) \
    (void)(fn)((hwnd), WM_QUIT, (WPARAM)(exitCode), 0L)

/* void Cls_OnSystemError(HWND hwnd, int errCode); */
#define HANDLE_WM_SYSTEMERROR(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam)), 0L)
#define FORWARD_WM_SYSTEMERROR(hwnd, errCode, fn) \
    (void)(fn)((hwnd), WM_SYSTEMERROR, (WPARAM)(errCode), 0L)

/* BOOL Cls_OnCreate(HWND hwnd, CREATESTRUCT FAR* lpCreateStruct) */
#define HANDLE_WM_CREATE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (CREATESTRUCT FAR*)(lParam)) ? 0L : (LRESULT)-1L)
#define FORWARD_WM_CREATE(hwnd, lpCreateStruct, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_CREATE, 0, (LPARAM)(CREATESTRUCT FAR*)(lpCreateStruct))

/* BOOL Cls_OnNCCreate(HWND hwnd, CREATESTRUCT FAR* lpCreateStruct) */
#define HANDLE_WM_NCCREATE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (CREATESTRUCT FAR*)(lParam))
#define FORWARD_WM_NCCREATE(hwnd, lpCreateStruct, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_NCCREATE, 0, (LPARAM)(CREATESTRUCT FAR*)(lpCreateStruct))

/* void Cls_OnDestroy(HWND hwnd); */
#define HANDLE_WM_DESTROY(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_DESTROY(hwnd, fn) \
    (void)(fn)((hwnd), WM_DESTROY, 0, 0L)

/* void Cls_OnNCDestroy(HWND hwnd); */
#define HANDLE_WM_NCDESTROY(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_NCDESTROY(hwnd, fn) \
    (void)(fn)((hwnd), WM_NCDESTROY, 0, 0L)

/* void Cls_OnShowWindow(HWND hwnd, BOOL fShow, UINT status); */
#define HANDLE_WM_SHOWWINDOW(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam), LOWORD(lParam)), 0L)
#define FORWARD_WM_SHOWWINDOW(hwnd, fShow, status, fn) \
    (void)(fn)((hwnd), WM_SHOWWINDOW, (WPARAM)(BOOL)(fShow), MAKELPARAM((UINT)(status), 0))

/* void Cls_OnSetRedraw(HWND hwnd, BOOL fRedraw); */
#define HANDLE_WM_SETREDRAW(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam)), 0L)
#define FORWARD_WM_SETREDRAW(hwnd, fRedraw, fn) \
    (void)(fn)((hwnd), WM_SETREDRAW, (WPARAM)(fRedraw), 0L)

/* void Cls_OnEnable(HWND hwnd, BOOL fEnable); */
#define HANDLE_WM_ENABLE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam)), 0L)
#define FORWARD_WM_ENABLE(hwnd, fEnable, fn) \
    (void)(fn)((hwnd), WM_ENABLE, (WPARAM)(BOOL)(fEnable), 0L)

/* void Cls_OnSetText(HWND hwnd, LPCSTR lpszText); */
#define HANDLE_WM_SETTEXT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (LPCSTR)(lParam)), 0L)
#define FORWARD_WM_SETTEXT(hwnd, lpszText, fn) \
    (void)(fn)((hwnd), WM_SETTEXT, 0, (LPARAM)(LPCSTR)(lpszText))

/* INT Cls_OnGetText(HWND hwnd, int cchTextMax, LPSTR lpszText) */
#define HANDLE_WM_GETTEXT(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)((hwnd), (int)(wParam), (LPSTR)(lParam))
#define FORWARD_WM_GETTEXT(hwnd, cchTextMax, lpszText, fn) \
    (int)(DWORD)(fn)((hwnd), WM_GETTEXT, (WPARAM)(int)(cchTextMax), (LPARAM)(LPSTR)(lpszText))

/* INT Cls_OnGetTextLength(HWND hwnd); */
#define HANDLE_WM_GETTEXTLENGTH(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)(hwnd)
#define FORWARD_WM_GETTEXTLENGTH(hwnd, fn) \
    (int)(DWORD)(fn)((hwnd), WM_GETTEXTLENGTH, 0, 0L)

/* BOOL Cls_OnWindowPosChanging(HWND hwnd, WINDOWPOS FAR* lpwpos); */
#define HANDLE_WM_WINDOWPOSCHANGING(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (WINDOWPOS FAR*)(lParam))
#define FORWARD_WM_WINDOWPOSCHANGING(hwnd, lpwpos, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_WINDOWPOSCHANGING, 0, (LPARAM)(WINDOWPOS FAR*)(lpwpos))

/* void Cls_OnWindowPosChanged(HWND hwnd, const WINDOWPOS FAR* lpwpos); */
#define HANDLE_WM_WINDOWPOSCHANGED(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (const WINDOWPOS FAR*)(lParam)), 0L)
#define FORWARD_WM_WINDOWPOSCHANGED(hwnd, lpwpos, fn) \
    (void)(fn)((hwnd), WM_WINDOWPOSCHANGED, 0, (LPARAM)(const WINDOWPOS FAR*)(lpwpos))

/* void Cls_OnMove(HWND hwnd, int x, int y); */
#define HANDLE_WM_MOVE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam)), 0L)
#define FORWARD_WM_MOVE(hwnd, x, y, fn) \
    (void)(fn)((hwnd), WM_MOVE, 0, MAKELPARAM((int)(x), (int)(y)))

/* void Cls_OnSize(HWND hwnd, UINT state, int cx, int cy); */
#define HANDLE_WM_SIZE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam), (int)HIWORD(lParam)), 0L)
#define FORWARD_WM_SIZE(hwnd, state, cx, cy, fn) \
    (void)(fn)((hwnd), WM_SIZE, (WPARAM)(UINT)(state), MAKELPARAM((int)(cx), (int)(cy)))

/* void Cls_OnClose(HWND hwnd); */
#define HANDLE_WM_CLOSE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_CLOSE(hwnd, fn) \
    (void)(fn)((hwnd), WM_CLOSE, 0, 0L)

/* BOOL Cls_OnQueryOpen(HWND hwnd); */
#define HANDLE_WM_QUERYOPEN(hwnd, wParam, lParam, fn) \
    MAKELRESULT((BOOL)(fn)(hwnd), 0)
#define FORWARD_WM_QUERYOPEN(hwnd, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_QUERYOPEN, 0, 0L)

/* void Cls_OnGetMinMaxInfo(HWND hwnd, MINMAXINFO FAR* lpMinMaxInfo); */
#define HANDLE_WM_GETMINMAXINFO(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (MINMAXINFO FAR*)(lParam)), 0L)
#define FORWARD_WM_GETMINMAXINFO(hwnd, lpMinMaxInfo, fn) \
    (void)(fn)((hwnd), WM_GETMINMAXINFO, 0, (LPARAM)(MINMAXINFO FAR*)(lpMinMaxInfo))

/* void Cls_OnPaint(HWND hwnd); */
#define HANDLE_WM_PAINT(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_PAINT(hwnd, fn) \
    (void)(fn)((hwnd), WM_PAINT, 0, 0L)

/* BOOL Cls_OnEraseBkgnd(HWND hwnd, HDC hdc); */
#define HANDLE_WM_ERASEBKGND(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (HDC)(wParam))
#define FORWARD_WM_ERASEBKGND(hwnd, hdc, fn) \
   (BOOL)(DWORD)(fn)((hwnd), WM_ERASEBKGND, (WPARAM)(HDC)(hdc), 0L)

/* BOOL Cls_OnIconEraseBkgnd(HWND hwnd, HDC hdc); */
#define HANDLE_WM_ICONERASEBKGND(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (HDC)(wParam))
#define FORWARD_WM_ICONERASEBKGND(hwnd, hdc, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_ICONERASEBKGND, (WPARAM)(HDC)(hdc), 0L)

/* void Cls_OnNCPaint(HWND hwnd, HRGN hrgn); */
#define HANDLE_WM_NCPAINT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HRGN)(wParam)), 0L)
#define FORWARD_WM_NCPAINT(hwnd, hrgn, fn) \
    (void)(fn)((hwnd), WM_NCPAINT, (WPARAM)(HRGN)(hrgn), 0L)

/* UINT Cls_OnNCCalcSize(HWND hwnd, BOOL fCalcValidRects, NCCALCSIZE_PARAMS FAR* lpcsp) */
#define HANDLE_WM_NCCALCSIZE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)((hwnd), (BOOL)(wParam), (NCCALCSIZE_PARAMS FAR*)(lParam))
#define FORWARD_WM_NCCALCSIZE(hwnd, fCalcValidRects, lpcsp, fn) \
    (UINT)(DWORD)(fn)((hwnd), WM_NCCALCSIZE, (WPARAM)(fCalcValidRects), (LPARAM)(NCCALCSIZE_PARAMS FAR*)(lpcsp))

/* UINT Cls_OnNCHitTest(HWND hwnd, int x, int y); */
#define HANDLE_WM_NCHITTEST(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam))
#define FORWARD_WM_NCHITTEST(hwnd, x, y, fn) \
    (UINT)(DWORD)(fn)((hwnd), WM_NCHITTEST, 0, MAKELPARAM((int)(x), (int)(y)))

/* HICON Cls_OnQueryDragIcon(HWND hwnd); */
#define HANDLE_WM_QUERYDRAGICON(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)(hwnd)
#define FORWARD_WM_QUERYDRAGICON(hwnd, fn) \
    (HICON)(UINT)(DWORD)(fn)((hwnd), WM_QUERYDRAGICON, 0, 0L)

#ifdef __SHELLAPI_H
/* void Cls_OnDropFiles(HWND hwnd, HDROP hdrop); */
#define HANDLE_WM_DROPFILES(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HDROP)(wParam)), 0L)
#define FORWARD_WM_DROPFILES(hwnd, hdrop, fn) \
    (void)(fn)((hwnd), WM_DROPFILES, (WPARAM)(hdrop), 0L)
#endif  /* __SHELLAPI_H */

/* void Cls_OnActivate(HWND hwnd, UINT state, HWND hwndActDeact, BOOL fMinimized); */
#define HANDLE_WM_ACTIVATE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (HWND)LOWORD(lParam), (BOOL)HIWORD(lParam)), 0L)
#define FORWARD_WM_ACTIVATE(hwnd, state, hwndActDeact, fMinimized, fn) \
    (void)(fn)((hwnd), WM_ACTIVATE, (WPARAM)(UINT)(state), MAKELPARAM((UINT)(HWND)(hwndActDeact), (UINT)(BOOL)(fMinimized)))

/* void Cls_OnActivateApp(HWND hwnd, BOOL fActivate, HTASK htaskActDeact); */
#define HANDLE_WM_ACTIVATEAPP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam), (HTASK)LOWORD(lParam)), 0L)
#define FORWARD_WM_ACTIVATEAPP(hwnd, fActivate, htaskActDeact, fn) \
    (void)(fn)((hwnd), WM_ACTIVATEAPP, (WPARAM)(BOOL)(fActivate), MAKELPARAM((htaskActDeact),0))

/* BOOL Cls_OnNCActivate(HWND hwnd, BOOL fActive, HWND hwndActDeact, BOOL fMinimized); */
#define HANDLE_WM_NCACTIVATE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (BOOL)(wParam), (HWND)LOWORD(lParam), (BOOL)HIWORD(lParam))
#define FORWARD_WM_NCACTIVATE(hwnd, fActive, hwndActDeact, fMinimized, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_NCACTIVATE, (WPARAM)(BOOL)(fActive), MAKELPARAM((UINT)(HWND)(hwndActDeact), (UINT)(BOOL)(fMinimized)))

/* void Cls_OnSetFocus(HWND hwnd, HWND hwndOldFocus) */
#define HANDLE_WM_SETFOCUS(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_SETFOCUS(hwnd, hwndOldFocus, fn) \
    (void)(fn)((hwnd), WM_SETFOCUS, (WPARAM)(HWND)(hwndOldFocus), 0L)

/* void Cls_OnKillFocus(HWND hwnd, HWND hwndNewFocus); */
#define HANDLE_WM_KILLFOCUS(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_KILLFOCUS(hwnd, hwndNewFocus, fn) \
    (void)(fn)((hwnd), WM_KILLFOCUS, (WPARAM)(HWND)(hwndNewFocus), 0L)

/* void Cls_OnKey(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags); */
#define HANDLE_WM_KEYDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), TRUE, (int)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_KEYDOWN(hwnd, vk, cRepeat, flags, fn) \
    (void)(fn)((hwnd), WM_KEYDOWN, (WPARAM)(UINT)(vk), MAKELPARAM((UINT)(cRepeat), (UINT)(flags)))

/* void Cls_OnKey(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags); */
#define HANDLE_WM_KEYUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), FALSE, (int)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_KEYUP(hwnd, vk, cRepeat, flags, fn) \
    (void)(fn)((hwnd), WM_KEYUP, (WPARAM)(UINT)(vk), MAKELPARAM((UINT)(cRepeat), (UINT)(flags)))

/* void Cls_OnChar(HWND hwnd, UINT ch, int cRepeat); */
#define HANDLE_WM_CHAR(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_CHAR(hwnd, ch, cRepeat, fn) \
    (void)(fn)((hwnd), WM_CHAR, (WPARAM)(UINT)(ch), MAKELPARAM((UINT)(cRepeat),0))

/* void Cls_OnDeadChar(HWND hwnd, UINT ch, int cRepeat); */
#define HANDLE_WM_DEADCHAR(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_DEADCHAR(hwnd, ch, cRepeat, fn) \
    (void)(fn)((hwnd), WM_DEADCHAR, (WPARAM)(UINT)(ch), MAKELPARAM((UINT)(cRepeat),0))

/* void Cls_OnSysKey(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags); */
#define HANDLE_WM_SYSKEYDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), TRUE, (int)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_SYSKEYDOWN(hwnd, vk, cRepeat, flags, fn) \
    (void)(fn)((hwnd), WM_SYSKEYDOWN, (WPARAM)(UINT)(vk), MAKELPARAM((UINT)(cRepeat), (UINT)(flags)))

/* void Cls_OnSysKey(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags); */
#define HANDLE_WM_SYSKEYUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), FALSE, (int)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_SYSKEYUP(hwnd, vk, cRepeat, flags, fn) \
    (void)(fn)((hwnd), WM_SYSKEYUP, (WPARAM)(UINT)(vk), MAKELPARAM((UINT)(cRepeat), (UINT)(flags)))

/* void Cls_OnSysChar(HWND hwnd, UINT ch, int cRepeat); */
#define HANDLE_WM_SYSCHAR(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_SYSCHAR(hwnd, ch, cRepeat, fn) \
    (void)(fn)((hwnd), WM_SYSCHAR, (WPARAM)(UINT)(ch), MAKELPARAM((UINT)(cRepeat), 0))

/* void Cls_OnSysDeadChar(HWND hwnd, UINT ch, int cRepeat); */
#define HANDLE_WM_SYSDEADCHAR(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_SYSDEADCHAR(hwnd, ch, cRepeat, fn) \
    (void)(fn)((hwnd), WM_SYSDEADCHAR, (WPARAM)(UINT)(ch), MAKELPARAM((UINT)(cRepeat), 0))

/* void Cls_OnMouseMove(HWND hwnd, int x, int y, UINT keyFlags); */
#define HANDLE_WM_MOUSEMOVE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_MOUSEMOVE(hwnd, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), WM_MOUSEMOVE, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnLButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_LBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_LBUTTONDOWN(hwnd, fDoubleClick, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_LBUTTONDBLCLK : WM_LBUTTONDOWN, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnLButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_LBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnLButtonUp(HWND hwnd, int x, int y, UINT keyFlags); */
#define HANDLE_WM_LBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_LBUTTONUP(hwnd, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), WM_LBUTTONUP, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnRButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_RBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_RBUTTONDOWN(hwnd, fDoubleClick, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_RBUTTONDBLCLK : WM_RBUTTONDOWN, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnRButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_RBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnRButtonUp(HWND hwnd, int x, int y, UINT flags); */
#define HANDLE_WM_RBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_RBUTTONUP(hwnd, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), WM_RBUTTONUP, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnMButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_MBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_MBUTTONDOWN(hwnd, fDoubleClick, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_MBUTTONDBLCLK : WM_MBUTTONDOWN, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnMButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT keyFlags); */
#define HANDLE_WM_MBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnMButtonUp(HWND hwnd, int x, int y, UINT flags); */
#define HANDLE_WM_MBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_MBUTTONUP(hwnd, x, y, keyFlags, fn) \
    (void)(fn)((hwnd), WM_MBUTTONUP, (WPARAM)(UINT)(keyFlags), MAKELPARAM((x), (y)))

/* void Cls_OnNCMouseMove(HWND hwnd, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCMOUSEMOVE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCMOUSEMOVE(hwnd, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), WM_NCMOUSEMOVE, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)))

/* void Cls_OnNCLButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCLBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCLBUTTONDOWN(hwnd, fDoubleClick, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_NCLBUTTONDBLCLK : WM_NCLBUTTONDOWN, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)))

/* void Cls_OnNCLButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCLBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnNCLButtonUp(HWND hwnd, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCLBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCLBUTTONUP(hwnd, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), WM_NCLBUTTONUP, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)) )

/* void Cls_OnNCRButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCRBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCRBUTTONDOWN(hwnd, fDoubleClick, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_NCRBUTTONDBLCLK : WM_NCRBUTTONDOWN, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)) )

/* void Cls_OnNCRButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCRBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnNCRButtonUp(HWND hwnd, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCRBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCRBUTTONUP(hwnd, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), WM_NCRBUTTONUP, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)) )

/* void Cls_OnNCMButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCMBUTTONDOWN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), FALSE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCMBUTTONDOWN(hwnd, fDoubleClick, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), (fDoubleClick) ? WM_NCMBUTTONDBLCLK : WM_NCMBUTTONDOWN, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)) )

/* void Cls_OnNCMButtonDown(HWND hwnd, BOOL fDoubleClick, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCMBUTTONDBLCLK(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), TRUE, (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)

/* void Cls_OnNCMButtonUp(HWND hwnd, int x, int y, UINT codeHitTest); */
#define HANDLE_WM_NCMBUTTONUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)LOWORD(lParam), (int)HIWORD(lParam), (UINT)(wParam)), 0L)
#define FORWARD_WM_NCMBUTTONUP(hwnd, x, y, codeHitTest, fn) \
    (void)(fn)((hwnd), WM_NCMBUTTONUP, (WPARAM)(UINT)(codeHitTest), MAKELPARAM((x), (y)) )

/* int Cls_OnMouseActivate(HWND hwnd, HWND hwndTopLevel, UINT codeHitTest, UINT msg); */
#define HANDLE_WM_MOUSEACTIVATE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)((hwnd), (HWND)(wParam), (UINT)LOWORD(lParam), (UINT)HIWORD(lParam))
#define FORWARD_WM_MOUSEACTIVATE(hwnd, hwndTopLevel, codeHitTest, msg, fn) \
    (int)(DWORD)(fn)((hwnd), WM_MOUSEACTIVATE, (WPARAM)(HWND)(hwndTopLevel), MAKELPARAM((codeHitTest), (msg)))

/* void Cls_OnCancelMode(HWND hwnd); */
#define HANDLE_WM_CANCELMODE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_CANCELMODE(hwnd, fn) \
    (void)(fn)((hwnd), WM_CANCELMODE, 0, 0L)

/* void Cls_OnTimer(HWND hwnd, UINT id); */
#define HANDLE_WM_TIMER(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam)), 0L)
#define FORWARD_WM_TIMER(hwnd, id, fn) \
    (void)(fn)((hwnd), WM_TIMER, (WPARAM)(UINT)(id), 0L)

/* void Cls_OnInitMenu(HWND hwnd, HMENU hMenu); */
#define HANDLE_WM_INITMENU(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HMENU)(wParam)), 0L)
#define FORWARD_WM_INITMENU(hwnd, hMenu, fn) \
    (void)(fn)((hwnd), WM_INITMENU, (WPARAM)(HMENU)(hMenu), 0L)

/* void Cls_OnInitMenuPopup(HWND hwnd, HMENU hMenu, int item, BOOL fSystemMenu); */
#define HANDLE_WM_INITMENUPOPUP(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HMENU)(wParam), (int)LOWORD(lParam), (BOOL)HIWORD(lParam)), 0L)
#define FORWARD_WM_INITMENUPOPUP(hwnd, hMenu, item, fSystemMenu, fn) \
    (void)(fn)((hwnd), WM_INITMENUPOPUP, (WPARAM)(HMENU)(hMenu), MAKELPARAM((item),(fSystemMenu)))

/* void Cls_OnMenuSelect(HWND hwnd, HMENU hmenu, int item, HMENU hmenuPopup, UINT flags); */
#define HANDLE_WM_MENUSELECT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HMENU)HIWORD(lParam), (LOWORD(lParam) & MF_POPUP) ? 0 : (int)(wParam), \
                            (LOWORD(lParam) & MF_POPUP) ? (HMENU)(wParam) : 0, LOWORD(lParam)), 0L)
#define FORWARD_WM_MENUSELECT(hwnd, hmenu, item, hmenuPopup, flags, fn) \
    (void)(fn)((hwnd), WM_MENUSELECT, ((flags) & MF_POPUP) ? (WPARAM)(HMENU)(hmenuPopup) : (WPARAM)(int)(item), MAKELPARAM((flags), (hmenu)))

/* DWORD Cls_OnMenuChar(HWND hwnd, UINT ch, UINT flags, HMENU hmenu); */
#define HANDLE_WM_MENUCHAR(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(fn)((hwnd), (UINT)(wParam), LOWORD(lParam), (HMENU)HIWORD(lParam));
#define FORWARD_WM_MENUCHAR(hwnd, ch, flags, hmenu, fn) \
    (DWORD)(fn)((hwnd), WM_MENUCHAR, (WPARAM)(UINT)(ch), MAKELPARAM((flags), (UINT)(hmenu)))

/* void Cls_OnCommand(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify); */
#define HANDLE_WM_COMMAND(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam), (HWND)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_COMMAND(hwnd, id, hwndCtl, codeNotify, fn) \
    (void)(fn)((hwnd), WM_COMMAND, (WPARAM)(int)(id), MAKELPARAM((UINT)(hwndCtl), (codeNotify)))

/* void Cls_OnHScroll(HWND hwnd, HWND hwndCtl, UINT code, int pos); */
#define HANDLE_WM_HSCROLL(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)HIWORD(lParam), (UINT)(wParam), (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_HSCROLL(hwnd, hwndCtl, code, pos, fn) \
    (void)(fn)((hwnd), WM_HSCROLL, (WPARAM)(UINT)(code), MAKELPARAM((pos), (UINT)(hwndCtl)))

/* void Cls_OnVScroll(HWND hwnd, HWND hwndCtl, UINT code, int pos); */
#define HANDLE_WM_VSCROLL(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)HIWORD(lParam), (UINT)(wParam),  (int)LOWORD(lParam)), 0L)
#define FORWARD_WM_VSCROLL(hwnd, hwndCtl, code, pos, fn) \
    (void)(fn)((hwnd), WM_VSCROLL, (WPARAM)(UINT)(code), MAKELPARAM((pos), (UINT)(hwndCtl)))

/* void Cls_OnCut(HWND hwnd); */
#define HANDLE_WM_CUT(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_CUT(hwnd, fn) \
    (void)(fn)((hwnd), WM_CUT, 0, 0L)

/* void Cls_OnCopy(HWND hwnd); */
#define HANDLE_WM_COPY(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_COPY(hwnd, fn) \
    (void)(fn)((hwnd), WM_COPY, 0, 0L)

/* void Cls_OnPaste(HWND hwnd); */
#define HANDLE_WM_PASTE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_PASTE(hwnd, fn) \
    (void)(fn)((hwnd), WM_PASTE, 0, 0L)

/* void Cls_OnClear(HWND hwnd); */
#define HANDLE_WM_CLEAR(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_CLEAR(hwnd, fn) \
    (void)(fn)((hwnd), WM_CLEAR, 0, 0L)

/* void Cls_OnUndo(HWND hwnd); */
#define HANDLE_WM_UNDO(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_UNDO(hwnd, fn) \
    (void)(fn)((hwnd), WM_UNDO, 0, 0L)

/* HANDLE Cls_OnRenderFormat(HWND hwnd, UINT fmt); */
#define HANDLE_WM_RENDERFORMAT(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(HANDLE)(fn)((hwnd), (UINT)(wParam))
#define FORWARD_WM_RENDERFORMAT(hwnd, fmt, fn) \
    (HANDLE)(UINT)(DWORD)(fn)((hwnd), WM_RENDERFORMAT, (WPARAM)(UINT)(fmt), 0L)

/* void Cls_OnRenderAllFormats(HWND hwnd); */
#define HANDLE_WM_RENDERALLFORMATS(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_RENDERALLFORMATS(hwnd, fn) \
    (void)(fn)((hwnd), WM_RENDERALLFORMATS, 0, 0L)

/* void Cls_OnDestroyClipboard(HWND hwnd); */
#define HANDLE_WM_DESTROYCLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_DESTROYCLIPBOARD(hwnd, fn) \
    (void)(fn)((hwnd), WM_DESTROYCLIPBOARD, 0, 0L)

/* void Cls_OnDrawClipboard(HWND hwnd); */
#define HANDLE_WM_DRAWCLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_DRAWCLIPBOARD(hwnd, fn) \
    (void)(fn)((hwnd), WM_DRAWCLIPBOARD, 0, 0L)

/* void Cls_OnPaintClipboard(HWND hwnd, HWND hwndCBViewer, const PAINTSTRUCT FAR* lpPaintStruct) */
#define HANDLE_WM_PAINTCLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), (const PAINTSTRUCT FAR*)GlobalLock((HGLOBAL)LOWORD(lParam))), GlobalUnlock((HGLOBAL)LOWORD(lParam)), 0L)
#define FORWARD_WM_PAINTCLIPBOARD(hwnd, hwndCBViewer, lpPaintStruct, fn) \
    (void)(fn)((hwnd), WM_PAINTCLIPBOARD, (WPARAM)(HWND)(hwndCBViewer), (LPARAM)(lpPaintStruct))

/* void Cls_OnSizeClipboard(HWND hwnd, HWND hwndCBViewer, const RECT FAR* lprc); */
#define HANDLE_WM_SIZECLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), (const RECT FAR*)GlobalLock((HGLOBAL)LOWORD(lParam))), GlobalUnlock((HGLOBAL)LOWORD(lParam)), 0L)
#define FORWARD_WM_SIZECLIPBOARD(hwnd, hwndCBViewer, lprc, fn) \
    (void)(fn)((hwnd), WM_SIZECLIPBOARD, (WPARAM)(HWND)(hwndCBViewer), (LPARAM)(lprc))

/* void Cls_OnVScrollClipboard(HWND hwnd, HWND hwndCBViewer, UINT code, int pos); */
#define HANDLE_WM_VSCROLLCLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), LOWORD(lParam), (int)HIWORD(lParam)), 0L)
#define FORWARD_WM_VSCROLLCLIPBOARD(hwnd, hwndCBViewer, code, pos, fn) \
    (void)(fn)((hwnd), WM_VSCROLLCLIPBOARD, (WPARAM)(HWND)(hwndCBViewer), MAKELPARAM((code), (pos)))

/* void Cls_OnHScrollClipboard(HWND hwnd, HWND hwndCBViewer, UINT code, int pos); */
#define HANDLE_WM_HSCROLLCLIPBOARD(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), LOWORD(lParam), (int)HIWORD(lParam)), 0L)
#define FORWARD_WM_HSCROLLCLIPBOARD(hwnd, hwndCBViewer, code, pos, fn) \
    (void)(fn)((hwnd), WM_HSCROLLCLIPBOARD, (WPARAM)(HWND)(hwndCBViewer), MAKELPARAM((code), (pos)))

/* void Cls_OnAskCBFormatName(HWND hwnd, int cchMax, LPSTR rgchName); */
#define HANDLE_WM_ASKCBFORMATNAME(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam), (LPSTR)(lParam)), 0L)
#define FORWARD_WM_ASKCBFORMATNAME(hwnd, cchMax, rgchName, fn) \
    (void)(fn)((hwnd), WM_ASKCBFORMATNAME, (WPARAM)(int)(cchMax), (LPARAM)(rgchName))

/* void Cls_OnChangeCBChain(HWND hwnd, HWND hwndRemove, HWND hwndNext); */
#define HANDLE_WM_CHANGECBCHAIN(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), (HWND)LOWORD(lParam)), 0L)
#define FORWARD_WM_CHANGECBCHAIN(hwnd, hwndRemove, hwndNext, fn) \
    (void)(fn)((hwnd), WM_CHANGECBCHAIN, (WPARAM)(HWND)(hwndRemove), MAKELPARAM((UINT)(hwndNext), 0))

/* BOOL Cls_OnSetCursor(HWND hwnd, HWND hwndCursor, UINT codeHitTest, UINT msg); */
#define HANDLE_WM_SETCURSOR(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(BOOL)(fn)((hwnd), (HWND)(wParam), (UINT)LOWORD(lParam), (UINT)HIWORD(lParam));
#define FORWARD_WM_SETCURSOR(hwnd, hwndCursor, codeHitTest, msg, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_SETCURSOR, (WPARAM)(HWND)(hwndCursor), MAKELPARAM((codeHitTest), (msg)))

/* void Cls_OnSysCommand(HWND hwnd, UINT cmd, int x, int y); */
#define HANDLE_WM_SYSCOMMAND(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (int)LOWORD(lParam), (int)HIWORD(lParam)), 0L)
#define FORWARD_WM_SYSCOMMAND(hwnd, cmd, x, y, fn) \
    (void)(fn)((hwnd), WM_SYSCOMMAND, (WPARAM)(UINT)(cmd), MAKELPARAM((x), (y)))

/* HWND Cls_MDICreate(HWND hwnd, const MDICREATESTRUCT FAR* lpmcs); */
#define HANDLE_WM_MDICREATE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)((hwnd), (MDICREATESTRUCT FAR*)(lParam))
#define FORWARD_WM_MDICREATE(hwnd, lpmcs, fn) \
    (HWND)(UINT)(DWORD)(fn)((hwnd), WM_MDICREATE, 0, (LPARAM)(lpmcs))

/* void Cls_MDIDestroy(HWND hwnd, HWND hwndDestroy); */
#define HANDLE_WM_MDIDESTROY(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_MDIDESTROY(hwnd, hwndDestroy, fn) \
    (void)(fn)((hwnd), WM_MDIDESTROY, (WPARAM)(hwndDestroy), 0L)

/* NOTE: Usable only by MDI client windows */
/* void Cls_MDIActivate(HWND hwnd, BOOL fActive, HWND hwndActivate, HWND hwndDeactivate); */
#define HANDLE_WM_MDIACTIVATE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (BOOL)(wParam), (HWND)LOWORD(lParam), (HWND)HIWORD(lParam)), 0L)
#define FORWARD_WM_MDIACTIVATE(hwnd, fActive, hwndActivate, hwndDeactivate, fn) \
    (void)(fn)(hwnd, WM_MDIACTIVATE, (WPARAM)(fActive), MAKELPARAM((hwndActivate), (hwndDeactivate)))

/* void Cls_MDIRestore(HWND hwnd, HWND hwndRestore); */
#define HANDLE_WM_MDIRESTORE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_MDIRESTORE(hwnd, hwndRestore, fn) \
    (void)(fn)((hwnd), WM_MDIRESTORE, (WPARAM)(hwndRestore), 0L)

/* HWND Cls_MDINext(HWND hwnd, HWND hwndCur, BOOL fPrev); */
#define HANDLE_WM_MDINEXT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam), (BOOL)LOWORD(lParam)), 0L)
#define FORWARD_WM_MDINEXT(hwnd, hwndCur, fPrev, fn) \
    (HWND)(UINT)(DWORD)(fn)((hwnd), WM_MDINEXT, (WPARAM)(hwndCur), MAKELPARAM((fPrev), 0))

/* void Cls_MDIMaximize(HWND hwnd, HWND hwndMaximize); */
#define HANDLE_WM_MDIMAXIMIZE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HWND)(wParam)), 0L)
#define FORWARD_WM_MDIMAXIMIZE(hwnd, hwndMaximize, fn) \
    (void)(fn)((hwnd), WM_MDIMAXIMIZE, (WPARAM)(hwndMaximize), 0L)

/* BOOL Cls_MDITile(HWND hwnd, UINT cmd); */
#define HANDLE_WM_MDITILE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(fn)((hwnd), (UINT)(wParam))
#define FORWARD_WM_MDITILE(hwnd, cmd, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_MDITILE, (WPARAM)(cmd), 0L)

/* BOOL Cls_MDICascade(HWND hwnd, UINT cmd); */
#define HANDLE_WM_MDICASCADE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(fn)((hwnd), (UINT)(wParam))
#define FORWARD_WM_MDICASCADE(hwnd, cmd, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_MDICASCADE, (WPARAM)(cmd), 0L)

/* void Cls_MDIIconArrange(HWND hwnd); */
#define HANDLE_WM_MDIICONARRANGE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_MDIICONARRANGE(hwnd, fn) \
    (void)(fn)((hwnd), WM_MDIICONARRANGE, 0, 0L)

/* HWND Cls_MDIGetActive(HWND hwnd); */
#define HANDLE_WM_MDIGETACTIVE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)(hwnd)
#define FORWARD_WM_MDIGETACTIVE(hwnd, fn) \
    (HWND)(UINT)(DWORD)(fn)((hwnd), WM_MDIGETACTIVE, 0, 0L)

/* HMENU Cls_MDISetMenu(HWND hwnd, BOOL fRefresh, HMENU hmenuFrame, HMENU hmenuWindow); */
#define HANDLE_WM_MDISETMENU(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)((hwnd), (BOOL)(wParam), (HMENU)LOWORD(lParam), (HMENU)HIWORD(lParam))
#define FORWARD_WM_MDISETMENU(hwnd, fRefresh, hmenuFrame, hmenuWindow, fn) \
    (HMENU)(UINT)(DWORD)(fn)((hwnd), WM_MDISETMENU, (WPARAM)(fRefresh), MAKELPARAM((hmenuFrame), (hmenuWindow)))

/* void Cls_OnChildActivate(HWND hwnd); */
#define HANDLE_WM_CHILDACTIVATE(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_CHILDACTIVATE(hwnd, fn) \
    (void)(fn)((hwnd), WM_CHILDACTIVATE, 0, 0L)

/* BOOL Cls_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam); */
#define HANDLE_WM_INITDIALOG(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(BOOL)(fn)((hwnd), (HWND)(wParam), lParam);
#define FORWARD_WM_INITDIALOG(hwnd, hwndFocus, lParam, fn) \
    (BOOL)(DWORD)(fn)((hwnd), WM_INITDIALOG, (WPARAM)(HWND)(hwndFocus), (lParam))

/* HWND Cls_OnNextDlgCtl(HWND hwnd, HWND hwndSetFocus, BOOL fNext) */
#define HANDLE_WM_NEXTDLGCTL(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(HWND)(fn)((hwnd), (HWND)(wParam), (BOOL)LOWORD(lParam))
#define FORWARD_WM_NEXTDLGCTL(hwnd, hwndSetFocus, fNext, fn) \
    (HWND)(UINT)(DWORD)(fn)((hwnd), WM_NEXTDLGCTL, (WPARAM)(HWND)(hwndSetFocus), MAKELPARAM((fNext), 0))

/* void Cls_OnParentNotify(HWND hwnd, UINT msg, HWND hwndChild, int idChild); */
#define HANDLE_WM_PARENTNOTIFY(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (HWND)LOWORD(lParam), (UINT)HIWORD(lParam)), 0L)
#define FORWARD_WM_PARENTNOTIFY(hwnd, msg, hwndChild, idChild, fn) \
    (void)(fn)((hwnd), WM_PARENTNOTIFY, (WPARAM)(UINT)(msg), MAKELPARAM((UINT)(HWND)(hwndChild), (UINT)(idChild)))

/* void Cls_OnEnterIdle(HWND hwnd, UINT source, HWND hwndSource); */
#define HANDLE_WM_ENTERIDLE(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (UINT)(wParam), (HWND)LOWORD(lParam)), 0L)
#define FORWARD_WM_ENTERIDLE(hwnd, source, hwndSource, fn) \
    (void)(fn)((hwnd), WM_ENTERIDLE, (WPARAM)(UINT)(source), MAKELPARAM((UINT)(HWND)(hwndSource), 0))

/* UINT Cls_OnGetDlgCode(HWND hwnd, MSG FAR* lpmsg); */
#define HANDLE_WM_GETDLGCODE(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(fn)(hwnd, (MSG FAR*)(lParam))
#define FORWARD_WM_GETDLGCODE(hwnd, lpmsg, fn) \
    (UINT)(DWORD)(fn)((hwnd), WM_GETDLGCODE, (SELECTOROF(lpmsg) ? lpmsg->wParam : 0), (LPARAM)(lpmsg))

/* HBRUSH Cls_OnCtlColor(HWND hwnd, HDC hdc, HWND hwndChild, int type); */
#define HANDLE_WM_CTLCOLOR(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(HBRUSH)(fn)((hwnd), (HDC)(wParam), (HWND)LOWORD(lParam), (int)(HIWORD(lParam)))
#define FORWARD_WM_CTLCOLOR(hwnd, hdc, hwndChild, type, fn) \
    (HBRUSH)(UINT)(DWORD)(fn)((hwnd), WM_CTLCOLOR, (WPARAM)(HDC)(hdc), MAKELPARAM((UINT)(HWND)(hwndChild), (UINT)(int)(type)))

/* void Cls_OnSetFont(HWND hwndCtl, HFONT hfont, BOOL fRedraw); */
#define HANDLE_WM_SETFONT(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (HFONT)(wParam), (BOOL)LOWORD(lParam)), 0L)
#define FORWARD_WM_SETFONT(hwnd, hfont, fRedraw, fn) \
    (void)(fn)((hwnd), WM_SETFONT, (WPARAM)(HFONT)(hfont), MAKELPARAM((UINT)(BOOL)(fRedraw), 0))

/* HFONT Cls_OnGetFont(HWND hwnd); */
#define HANDLE_WM_GETFONT(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(UINT)(HFONT)(fn)(hwnd)
#define FORWARD_WM_GETFONT(hwnd, fn) \
    (HFONT)(UINT)(DWORD)(fn)((hwnd), WM_GETFONT, 0, 0L)

/* void Cls_OnDrawItem(HWND hwnd, const DRAWITEMSTRUCT FAR* lpDrawItem); */
#define HANDLE_WM_DRAWITEM(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (const DRAWITEMSTRUCT FAR*)(lParam)), 0L)
#define FORWARD_WM_DRAWITEM(hwnd, lpDrawItem, fn) \
    (void)(fn)((hwnd), WM_DRAWITEM, 0, (LPARAM)(const DRAWITEMSTRUCT FAR*)(lpDrawItem))

/* void Cls_OnMeasureItem(HWND hwnd, MEASUREITEMSTRUCT FAR* lpMeasureItem); */
#define HANDLE_WM_MEASUREITEM(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (MEASUREITEMSTRUCT FAR*)(lParam)), 0L)
#define FORWARD_WM_MEASUREITEM(hwnd, lpMeasureItem, fn) \
    (void)(fn)((hwnd), WM_MEASUREITEM, 0, (LPARAM)(MEASUREITEMSTRUCT FAR*)(lpMeasureItem))

/* void Cls_OnDeleteItem(HWND hwnd, const DELETEITEMSTRUCT FAR* lpDeleteItem) */
#define HANDLE_WM_DELETEITEM(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (const DELETEITEMSTRUCT FAR*)(lParam)), 0L)
#define FORWARD_WM_DELETEITEM(hwnd, lpDeleteItem, fn) \
    (void)(fn)((hwnd), WM_DELETEITEM, 0, (LPARAM)(const DELETEITEMSTRUCT FAR*)(lpDeleteItem))

/* int Cls_OnCompareItem(HWND hwnd, const COMPAREITEMSTRUCT FAR* lpCompareItem); */
#define HANDLE_WM_COMPAREITEM(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)((hwnd), (const COMPAREITEMSTRUCT FAR*)(lParam))
#define FORWARD_WM_COMPAREITEM(hwnd, lpCompareItem, fn) \
    (int)(DWORD)(fn)((hwnd), WM_COMPAREITEM, 0, (LPARAM)(const COMPAREITEMSTRUCT FAR*)(lpCompareItem))

/* int Cls_OnVkeyToItem(HWND hwnd, UINT vk, HWND hwndListbox, int iCaret); */
#define HANDLE_WM_VKEYTOITEM(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)((hwnd), (UINT)(wParam), (HWND)LOWORD(lParam), (int)HIWORD(lParam))
#define FORWARD_WM_VKEYTOITEM(hwnd, vk, hwndListBox, iCaret, fn) \
    (int)(DWORD)(fn)((hwnd), WM_VKEYTOITEM, (WPARAM)(UINT)(vk), MAKELPARAM((UINT)(hwndListBox), (UINT)(iCaret)))

/* int Cls_OnCharToItem(HWND hwnd, UINT ch, HWND hwndListbox, int iCaret); */
#define HANDLE_WM_CHARTOITEM(hwnd, wParam, lParam, fn) \
    (LRESULT)(DWORD)(int)(fn)((hwnd), (UINT)(wParam), (HWND)LOWORD(lParam), (int)HIWORD(lParam))
#define FORWARD_WM_CHARTOITEM(hwnd, ch, hwndListBox, iCaret, fn) \
    (int)(DWORD)(fn)((hwnd), WM_CHARTOITEM, (WPARAM)(UINT)(ch), MAKELPARAM((UINT)(hwndListBox), (UINT)(iCaret)))

/* void Cls_OnQueueSync(HWND hwnd); */
#define HANDLE_WM_QUEUESYNC(hwnd, wParam, lParam, fn) \
    ((fn)(hwnd), 0L)
#define FORWARD_WM_QUEUESYNC(hwnd, fn) \
    (void)(fn)((hwnd), WM_QUEUESYNC, 0, 0L)

/* void Cls_OnCommNotify(HWND hwnd, int cid, UINT flags); */
#define HANDLE_WM_COMMNOTIFY(hwnd, wParam, lParam, fn) \
    ((fn)((hwnd), (int)(wParam), LOWORD(lParam)), 0L)
#define FORWARD_WM_COMMNOTIFY(hwnd, cid, flags, fn) \
    (void)(fn)((hwnd), WM_COMMNOTIFY, (WPARAM)(cid), MAKELPARAM((flags), 0))

/****** Static control message APIs ******************************************/

#define Static_Enable(hwndCtl, fEnable)         EnableWindow((hwndCtl), (fEnable))

#define Static_GetText(hwndCtl, lpch, cchMax)   GetWindowText((hwndCtl), (lpch), (cchMax))
#define Static_GetTextLength(hwndCtl)           GetWindowTextLength(hwndCtl)
#define Static_SetText(hwndCtl, lpsz)           SetWindowText((hwndCtl), (lpsz))

#define Static_SetIcon(hwndCtl, hIcon)          ((HICON)(UINT)(DWORD)SendMessage((hwndCtl), STM_SETICON, (WPARAM)(HICON)(hIcon), 0L))
#define Static_GetIcon(hwndCtl, hIcon)          ((HICON)(UINT)(DWORD)SendMessage((hwndCtl), STM_GETICON, 0, 0L))

/****** Button control message APIs ******************************************/

#define Button_Enable(hwndCtl, fEnable)         EnableWindow((hwndCtl), (fEnable))

#define Button_GetText(hwndCtl, lpch, cchMax)   GetWindowText((hwndCtl), (lpch), (cchMax))
#define Button_GetTextLength(hwndCtl)           GetWindowTextLength(hwndCtl)
#define Button_SetText(hwndCtl, lpsz)           SetWindowText((hwndCtl), (lpsz))

#define Button_GetCheck(hwndCtl)            ((int)(DWORD)SendMessage((hwndCtl), BM_GETCHECK, 0, 0L))
#define Button_SetCheck(hwndCtl, check)     ((void)SendMessage((hwndCtl), BM_SETCHECK, (WPARAM)(int)(check), 0L))

#define Button_GetState(hwndCtl)            ((int)(DWORD)SendMessage((hwndCtl), BM_GETSTATE, 0, 0L))
#define Button_SetState(hwndCtl, state)     ((UINT)(DWORD)SendMessage((hwndCtl), BM_SETSTATE, (WPARAM)(int)(state), 0L))

#define Button_SetStyle(hwndCtl, style, fRedraw) ((void)SendMessage((hwndCtl), BM_SETSTYLE, (WPARAM)LOWORD(style), MAKELPARAM(((fRedraw) ? TRUE : FALSE), 0)))

/****** Edit control message APIs ********************************************/

#define Edit_Enable(hwndCtl, fEnable)           EnableWindow((hwndCtl), (fEnable))

#define Edit_GetText(hwndCtl, lpch, cchMax)     GetWindowText((hwndCtl), (lpch), (cchMax))
#define Edit_GetTextLength(hwndCtl)             GetWindowTextLength(hwndCtl)
#define Edit_SetText(hwndCtl, lpsz)             SetWindowText((hwndCtl), (lpsz))

#define Edit_LimitText(hwndCtl, cchMax)         ((void)SendMessage((hwndCtl), EM_LIMITTEXT, (WPARAM)(cchMax), 0L))

#define Edit_GetLineCount(hwndCtl)              ((int)(DWORD)SendMessage((hwndCtl), EM_GETLINECOUNT, 0, 0L))
#define Edit_GetLine(hwndCtl, line, lpch, cchMax) ((*((int FAR*)(lpch)) = (cchMax)), ((int)(DWORD)SendMessage((hwndCtl), EM_GETLINE, (WPARAM)(int)(line), (LPARAM)(LPSTR)(lpch))))

#define Edit_GetRect(hwndCtl, lprc)             ((void)SendMessage((hwndCtl), EM_GETRECT, 0, (LPARAM)(RECT FAR*)(lprc)))
#define Edit_SetRect(hwndCtl, lprc)             ((void)SendMessage((hwndCtl), EM_SETRECT, 0, (LPARAM)(const RECT FAR*)(lprc)))
#define Edit_SetRectNoPaint(hwndCtl, lprc)      ((void)SendMessage((hwndCtl), EM_SETRECTNP, 0, (LPARAM)(const RECT FAR*)(lprc)))

#define Edit_GetSel(hwndCtl)                    ((DWORD)SendMessage((hwndCtl), EM_GETSEL, 0, 0L))
#define Edit_SetSel(hwndCtl, ichStart, ichEnd)  ((void)SendMessage((hwndCtl), EM_SETSEL, 0, MAKELPARAM((ichStart), (ichEnd))))
#define Edit_ReplaceSel(hwndCtl, lpszReplace)   ((void)SendMessage((hwndCtl), EM_REPLACESEL, 0, (LPARAM)(LPCSTR)(lpszReplace)))

#define Edit_GetModify(hwndCtl)                 ((BOOL)(DWORD)SendMessage((hwndCtl), EM_GETMODIFY, 0, 0L))
#define Edit_SetModify(hwndCtl, fModified)      ((void)SendMessage((hwndCtl), EM_SETMODIFY, (WPARAM)(UINT)(fModified), 0L))

#define Edit_LineFromChar(hwndCtl, ich)         ((int)(DWORD)SendMessage((hwndCtl), EM_LINEFROMCHAR, (WPARAM)(int)(ich), 0L))
#define Edit_LineIndex(hwndCtl, line)           ((int)(DWORD)SendMessage((hwndCtl), EM_LINEINDEX, (WPARAM)(int)(line), 0L))
#define Edit_LineLength(hwndCtl, line)          ((int)(DWORD)SendMessage((hwndCtl), EM_LINELENGTH, (WPARAM)(int)(line), 0L))

#define Edit_Scroll(hwndCtl, dv, dh)            ((void)SendMessage((hwndCtl), EM_LINESCROLL, 0, MAKELPARAM((dv), (dh))))

#define Edit_CanUndo(hwndCtl)                   ((BOOL)(DWORD)SendMessage((hwndCtl), EM_CANUNDO, 0, 0L))
#define Edit_Undo(hwndCtl)                      ((BOOL)(DWORD)SendMessage((hwndCtl), EM_UNDO, 0, 0L))
#define Edit_EmptyUndoBuffer(hwndCtl)           ((void)SendMessage((hwndCtl), EM_EMPTYUNDOBUFFER, 0, 0L))

#define Edit_SetPasswordChar(hwndCtl, ch)       ((void)SendMessage((hwndCtl), EM_SETPASSWORDCHAR, (WPARAM)(UINT)(ch), 0L))

#define Edit_SetTabStops(hwndCtl, cTabs, lpTabs) ((void)SendMessage((hwndCtl), EM_SETTABSTOPS, (WPARAM)(int)(cTabs), (LPARAM)(const int FAR*)(lpTabs)))

#define Edit_FmtLines(hwndCtl, fAddEOL)         ((BOOL)(DWORD)SendMessage((hwndCtl), EM_FMTLINES, (WPARAM)(BOOL)(fAddEOL), 0L))

#define Edit_GetHandle(hwndCtl)                 ((HLOCAL)(UINT)(DWORD)SendMessage((hwndCtl), EM_GETHANDLE, 0, 0L))
#define Edit_SetHandle(hwndCtl, h)              ((void)SendMessage((hwndCtl), EM_SETHANDLE, (WPARAM)(UINT)(HLOCAL)(h), 0L))

#if defined(WINVER) && (WINVER >= 0x030a)
#define Edit_GetFirstVisibleLine(hwndCtl)       ((int)(DWORD)SendMessage((hwndCtl), EM_GETFIRSTVISIBLELINE, 0, 0L))

#define Edit_SetReadOnly(hwndCtl, fReadOnly)    ((BOOL)(DWORD)SendMessage((hwndCtl), EM_SETREADONLY, (WPARAM)(BOOL)(fReadOnly), 0L))

#define Edit_GetPasswordChar(hwndCtl)           ((char)(DWORD)SendMessage((hwndCtl), EM_GETPASSWORDCHAR, 0, 0L))

#define Edit_SetWordBreakProc(hwndCtl, lpfnWordBreak) ((void)SendMessage((hwndCtl), EM_SETWORDBREAKPROC, 0, (LPARAM)(EDITWORDBREAKPROC)(lpfnWordBreak)))
#define Edit_GetWordBreakProc(hwndCtl)          ((EDITWORDBREAKPROC)SendMessage((hwndCtl), EM_GETWORDBREAKPROC, 0, 0L))
#endif  /* WINVER >= 0x030a */

/****** ScrollBar control message APIs ***************************************/

/* NOTE: flags parameter is a collection of ESB_* values, NOT a boolean! */
#define ScrollBar_Enable(hwndCtl, flags)            EnableScrollBar((hwndCtl), SB_CTL, (flags))

#define ScrollBar_Show(hwndCtl, fShow)              ShowWindow((hwndCtl), (fShow) ? SW_SHOWNORMAL : SW_HIDE)

#define ScrollBar_SetPos(hwndCtl, pos, fRedraw)     SetScrollPos((hwndCtl), SB_CTL, (pos), (fRedraw))
#define ScrollBar_GetPos(hwndCtl)                   GetScrollPos((hwndCtl), SB_CTL)

#define ScrollBar_SetRange(hwndCtl, posMin, posMax, fRedraw)    SetScrollRange((hwndCtl), SB_CTL, (posMin), (posMax), (fRedraw))
#define ScrollBar_GetRange(hwndCtl, lpposMin, lpposMax)         GetScrollRange((hwndCtl), SB_CTL, (lpposMin), (lpposMax))

/****** ListBox control message APIs *****************************************/

#define ListBox_Enable(hwndCtl, fEnable)            EnableWindow((hwndCtl), (fEnable))

#define ListBox_GetCount(hwndCtl)                   ((int)(DWORD)SendMessage((hwndCtl), LB_GETCOUNT, 0, 0L))
#define ListBox_ResetContent(hwndCtl)               ((BOOL)(DWORD)SendMessage((hwndCtl), LB_RESETCONTENT, 0, 0L))

#define ListBox_AddString(hwndCtl, lpsz)            ((int)(DWORD)SendMessage((hwndCtl), LB_ADDSTRING, 0, (LPARAM)(LPCSTR)(lpsz)))
#define ListBox_InsertString(hwndCtl, index, lpsz)  ((int)(DWORD)SendMessage((hwndCtl), LB_INSERTSTRING, (WPARAM)(int)(index), (LPARAM)(LPCSTR)(lpsz)))

#define ListBox_AddItemData(hwndCtl, data)          ((int)(DWORD)SendMessage((hwndCtl), LB_ADDSTRING, 0, (LPARAM)(data)))
#define ListBox_InsertItemData(hwndCtl, index, data) ((int)(DWORD)SendMessage((hwndCtl), LB_INSERTSTRING, (WPARAM)(int)(index), (LPARAM)(data)))

#define ListBox_DeleteString(hwndCtl, index)        ((int)(DWORD)SendMessage((hwndCtl), LB_DELETESTRING, (WPARAM)(int)(index), 0L))

#define ListBox_GetTextLen(hwndCtl, index)          ((int)(DWORD)SendMessage((hwndCtl), LB_GETTEXTLEN, (WPARAM)(int)(index), 0L))
#define ListBox_GetText(hwndCtl, index, lpszBuffer)  ((int)(DWORD)SendMessage((hwndCtl), LB_GETTEXT, (WPARAM)(int)(index), (LPARAM)(LPCSTR)(lpszBuffer)))

#define ListBox_GetItemData(hwndCtl, index)         ((LRESULT)(DWORD)SendMessage((hwndCtl), LB_GETITEMDATA, (WPARAM)(int)(index), 0L))
#define ListBox_SetItemData(hwndCtl, index, data)   ((int)(DWORD)SendMessage((hwndCtl), LB_SETITEMDATA, (WPARAM)(int)(index), (LPARAM)(data)))

#define ListBox_FindString(hwndCtl, indexStart, lpszFind) ((int)(DWORD)SendMessage((hwndCtl), LB_FINDSTRING, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszFind)))
#define ListBox_FindItemData(hwndCtl, indexStart, data) ((int)(DWORD)SendMessage((hwndCtl), LB_FINDSTRING, (WPARAM)(int)(indexStart), (LPARAM)(data)))

#define ListBox_SetSel(hwndCtl, fSelect, index)     ((int)(DWORD)SendMessage((hwndCtl), LB_SETSEL, (WPARAM)(BOOL)(fSelect), MAKELPARAM((index), 0)))
#define ListBox_SelItemRange(hwndCtl, fSelect, first, last)    ((int)(DWORD)SendMessage((hwndCtl), LB_SELITEMRANGE, (WPARAM)(BOOL)(fSelect), MAKELPARAM((first), (last))))

#define ListBox_GetCurSel(hwndCtl)                  ((int)(DWORD)SendMessage((hwndCtl), LB_GETCURSEL, 0, 0L))
#define ListBox_SetCurSel(hwndCtl, index)           ((int)(DWORD)SendMessage((hwndCtl), LB_SETCURSEL, (WPARAM)(int)(index), 0L))

#define ListBox_SelectString(hwndCtl, indexStart, lpszFind) ((int)(DWORD)SendMessage((hwndCtl), LB_SELECTSTRING, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszFind)))
#define ListBox_SelectItemData(hwndCtl, indexStart, data)   ((int)(DWORD)SendMessage((hwndCtl), LB_SELECTSTRING, (WPARAM)(int)(indexStart), (LPARAM)(data)))

#define ListBox_GetSel(hwndCtl, index)              ((int)(DWORD)SendMessage((hwndCtl), LB_GETSEL, (WPARAM)(int)(index), 0L))
#define ListBox_GetSelCount(hwndCtl)                ((int)(DWORD)SendMessage((hwndCtl), LB_GETSELCOUNT, 0, 0L))
#define ListBox_GetTopIndex(hwndCtl)                ((int)(DWORD)SendMessage((hwndCtl), LB_GETTOPINDEX, 0, 0L))
#define ListBox_GetSelItems(hwndCtl, cItems, lpItems) ((int)(DWORD)SendMessage((hwndCtl), LB_GETSELITEMS, (WPARAM)(int)(cItems), (LPARAM)(int FAR*)(lpItems)))

#define ListBox_SetTopIndex(hwndCtl, indexTop)      ((int)(DWORD)SendMessage((hwndCtl), LB_SETTOPINDEX, (WPARAM)(int)(indexTop), 0L))

#define ListBox_SetColumnWidth(hwndCtl, cxColumn)   ((void)SendMessage((hwndCtl), LB_SETCOLUMNWIDTH, (WPARAM)(int)(cxColumn), 0L))
#define ListBox_GetHorizontalExtent(hwndCtl)        ((int)(DWORD)SendMessage((hwndCtl), LB_GETHORIZONTALEXTENT, 0, 0L))
#define ListBox_SetHorizontalExtent(hwndCtl, cxExtent)     ((void)SendMessage((hwndCtl), LB_SETHORIZONTALEXTENT, (WPARAM)(int)(cxExtent), 0L))

#define ListBox_SetTabStops(hwndCtl, cTabs, lpTabs) ((BOOL)(DWORD)SendMessage((hwndCtl), LB_SETTABSTOPS, (WPARAM)(int)(cTabs), (LPARAM)(int FAR*)(lpTabs)))

#define ListBox_GetItemRect(hwndCtl, index, lprc)   ((int)(DWORD)SendMessage((hwndCtl), LB_GETITEMRECT, (WPARAM)(int)(index), (LPARAM)(RECT FAR*)(lprc)))

#define ListBox_SetCaretIndex(hwndCtl, index)       ((int)(DWORD)SendMessage((hwndCtl), LB_SETCARETINDEX, (WPARAM)(int)(index), 0L))
#define ListBox_GetCaretIndex(hwndCtl)              ((int)(DWORD)SendMessage((hwndCtl), LB_GETCARETINDEX, 0, 0L))


#if defined(WINVER) && (WINVER >= 0x030a)
#define ListBox_FindStringExact(hwndCtl, indexStart, lpszFind) ((int)(DWORD)SendMessage((hwndCtl), LB_FINDSTRINGEXACT, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszFind)))

#define ListBox_SetItemHeight(hwndCtl, index, cy)   ((int)(DWORD)SendMessage((hwndCtl), LB_SETITEMHEIGHT, (WPARAM)(int)(index), MAKELPARAM((cy), 0)))
#define ListBox_GetItemHeight(hwndCtl, index)       ((int)(DWORD)SendMessage((hwndCtl), LB_GETITEMHEIGHT, (WPARAM)(int)(index), 0L))
#endif  /* WINVER >= 0x030a */

#define ListBox_Dir(hwndCtl, attrs, lpszFileSpec)   ((int)(DWORD)SendMessage((hwndCtl), LB_DIR, (WPARAM)(UINT)(attrs), (LPARAM)(LPCSTR)(lpszFileSpec)))

/****** ComboBox control message APIs ****************************************/

#define ComboBox_Enable(hwndCtl, fEnable)       EnableWindow((hwndCtl), (fEnable))

#define ComboBox_GetText(hwndCtl, lpch, cchMax) GetWindowText((hwndCtl), (lpch), (cchMax))
#define ComboBox_GetTextLength(hwndCtl)         GetWindowTextLength(hwndCtl)
#define ComboBox_SetText(hwndCtl, lpsz)         SetWindowText((hwndCtl), (lpsz))

#define ComboBox_LimitText(hwndCtl, cchLimit)   ((int)(DWORD)SendMessage((hwndCtl), CB_LIMITTEXT, (WPARAM)(int)(cchLimit), 0L))

#define ComboBox_GetEditSel(hwndCtl)            ((DWORD)SendMessage((hwndCtl), CB_GETEDITSEL, 0, 0L))
#define ComboBox_SetEditSel(hwndCtl, ichStart, ichEnd) ((int)(DWORD)SendMessage((hwndCtl), CB_SETEDITSEL, 0, MAKELPARAM((ichStart), (ichEnd))))

#define ComboBox_GetCount(hwndCtl)              ((int)(DWORD)SendMessage((hwndCtl), CB_GETCOUNT, 0, 0L))
#define ComboBox_ResetContent(hwndCtl)          ((int)(DWORD)SendMessage((hwndCtl), CB_RESETCONTENT, 0, 0L))

#define ComboBox_AddString(hwndCtl, lpsz)       ((int)(DWORD)SendMessage((hwndCtl), CB_ADDSTRING, 0, (LPARAM)(LPCSTR)(lpsz)))
#define ComboBox_InsertString(hwndCtl, index, lpsz) ((int)(DWORD)SendMessage((hwndCtl), CB_INSERTSTRING, (WPARAM)(int)(index), (LPARAM)(LPCSTR)(lpsz)))

#define ComboBox_AddItemData(hwndCtl, data)     ((int)(DWORD)SendMessage((hwndCtl), CB_ADDSTRING, 0, (LPARAM)(data)))
#define ComboBox_InsertItemData(hwndCtl, index, data) ((int)(DWORD)SendMessage((hwndCtl), CB_INSERTSTRING, (WPARAM)(int)(index), (LPARAM)(data)))

#define ComboBox_DeleteString(hwndCtl, index)   ((int)(DWORD)SendMessage((hwndCtl), CB_DELETESTRING, (WPARAM)(int)(index), 0L))

#define ComboBox_GetLBTextLen(hwndCtl, index)           ((int)(DWORD)SendMessage((hwndCtl), CB_GETLBTEXTLEN, (WPARAM)(int)(index), 0L))
#define ComboBox_GetLBText(hwndCtl, index, lpszBuffer)  ((int)(DWORD)SendMessage((hwndCtl), CB_GETLBTEXT, (WPARAM)(int)(index), (LPARAM)(LPCSTR)(lpszBuffer)))

#define ComboBox_GetItemData(hwndCtl, index)        ((LRESULT)(DWORD)SendMessage((hwndCtl), CB_GETITEMDATA, (WPARAM)(int)(index), 0L))
#define ComboBox_SetItemData(hwndCtl, index, data)  ((int)(DWORD)SendMessage((hwndCtl), CB_SETITEMDATA, (WPARAM)(int)(index), (LPARAM)(data)))

#define ComboBox_FindString(hwndCtl, indexStart, lpszFind)  ((int)(DWORD)SendMessage((hwndCtl), CB_FINDSTRING, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszFind)))
#define ComboBox_FindItemData(hwndCtl, indexStart, data)    ((int)(DWORD)SendMessage((hwndCtl), CB_FINDSTRING, (WPARAM)(int)(indexStart), (LPARAM)(data)))

#define ComboBox_GetCurSel(hwndCtl)                 ((int)(DWORD)SendMessage((hwndCtl), CB_GETCURSEL, 0, 0L))
#define ComboBox_SetCurSel(hwndCtl, index)          ((int)(DWORD)SendMessage((hwndCtl), CB_SETCURSEL, (WPARAM)(int)(index), 0L))

#define ComboBox_SelectString(hwndCtl, indexStart, lpszSelect)  ((int)(DWORD)SendMessage((hwndCtl), CB_SELECTSTRING, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszSelect)))
#define ComboBox_SelectItemData(hwndCtl, indexStart, data)      ((int)(DWORD)SendMessage((hwndCtl), CB_SELECTSTRING, (WPARAM)(int)(indexStart), (LPARAM)(data)))

#define ComboBox_Dir(hwndCtl, attrs, lpszFileSpec)  ((int)(DWORD)SendMessage((hwndCtl), CB_DIR, (WPARAM)(UINT)(attrs), (LPARAM)(LPCSTR)(lpszFileSpec)))

#define ComboBox_ShowDropdown(hwndCtl, fShow)       ((BOOL)(DWORD)SendMessage((hwndCtl), CB_SHOWDROPDOWN, (WPARAM)(BOOL)(fShow), 0L))

#if defined(WINVER) && (WINVER >= 0x030a)
#define ComboBox_FindStringExact(hwndCtl, indexStart, lpszFind)  ((int)(DWORD)SendMessage((hwndCtl), CB_FINDSTRINGEXACT, (WPARAM)(int)(indexStart), (LPARAM)(LPCSTR)(lpszFind)))

#define ComboBox_GetDroppedState(hwndCtl)           ((BOOL)(DWORD)SendMessage((hwndCtl), CB_GETDROPPEDSTATE, 0, 0L))
#define ComboBox_GetDroppedControlRect(hwndCtl, lprc) ((void)SendMessage((hwndCtl), CB_GETDROPPEDCONTROLRECT, 0, (LPARAM)(RECT FAR*)(lprc)))

#define ComboBox_GetItemHeight(hwndCtl)             ((int)(DWORD)SendMessage((hwndCtl), CB_GETITEMHEIGHT, 0, 0L))
#define ComboBox_SetItemHeight(hwndCtl, cyItem)     ((int)(DWORD)SendMessage((hwndCtl), CB_SETITEMHEIGHT, (WPARAM)(int)(index), 0L))

#define ComboBox_GetExtendedUI(hwndCtl)             ((UINT)(DWORD)SendMessage((hwndCtl), CB_GETEXTENDEDUI, 0, 0L))
#define ComboBox_SetExtendedUI(hwndCtl, flags)      ((int)(DWORD)SendMessage((hwndCtl), CB_SETEXTENDEDUI, (WPARAM)(UINT)(flags), 0L))
#endif  /* WINVER >= 0x030a */

#ifdef __cplusplus
}                       /* End of extern "C" { */
#endif  /* __cplusplus */

#ifndef RC_INVOKED
#pragma option -a.      /* Revert to default packing */
#endif  /* RC_INVOKED */

#endif  /* __WINDOWSX_H */
