text: /*
   * Updown control
   *
   * Copyright 1997, 2002 Dimitrie O. Paun
   *
   * This library is free software; you can redistribute it and/or
   * modify it under the terms of the GNU Lesser General Public
   * License as published by the Free Software Foundation; either
   * version 2.1 of the License, or (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public
   * License along with this library; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
   *
   * NOTE
   * 
   * This code was audited for completeness against the documented features
   * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
   * 
   * Unless otherwise noted, we believe this code to be complete, as per
   * the specification mentioned above.
   * If you discover missing features, or bugs, please note them below.
   * 
   */
  
  #include <stdlib.h>
  #include <string.h>
  #include <stdarg.h>
  #include <stdio.h>
  
  #include "windef.h"
  #include "winbase.h"
  #include "wingdi.h"
  #include "winuser.h"
  #include "winnls.h"
  #include "commctrl.h"
  #include "comctl32.h"
  #include "uxtheme.h"
  #include "vssym32.h"
  #include "wine/heap.h"
  #include "wine/unicode.h"
  #include "wine/debug.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(updown);
  
  typedef struct
  {
      HWND      Self;            /* Handle to this up-down control */
      HWND      Notify;          /* Handle to the parent window */
      DWORD     dwStyle;         /* The GWL_STYLE for this window */
      UINT      AccelCount;      /* Number of elements in AccelVect */
      UDACCEL*  AccelVect;       /* Vector containing AccelCount elements */
      INT       AccelIndex;      /* Current accel index, -1 if not accel'ing */
      INT       Base;            /* Base to display nr in the buddy window */
      INT       CurVal;          /* Current up-down value */
      INT       MinVal;          /* Minimum up-down value */
      INT       MaxVal;          /* Maximum up-down value */
      HWND      Buddy;           /* Handle to the buddy window */
      INT       BuddyType;       /* Remembers the buddy type BUDDY_TYPE_* */
      INT       Flags;           /* Internal Flags FLAG_* */
      BOOL      UnicodeFormat;   /* Marks the use of Unicode internally */
  } UPDOWN_INFO;
  
  /* Control configuration constants */
  
  #define INITIAL_DELAY	500    /* initial timer until auto-inc kicks in */
  #define AUTOPRESS_DELAY	250    /* time to keep arrow pressed on KEY_DOWN */
  #define REPEAT_DELAY	50     /* delay between auto-increments */
  
  #define DEFAULT_WIDTH	    16 /* default width of the ctrl */
  #define DEFAULT_XSEP         0 /* default separation between buddy and ctrl */
  #define DEFAULT_ADDTOP       0 /* amount to extend above the buddy window */
  #define DEFAULT_ADDBOT       0 /* amount to extend below the buddy window */
  #define DEFAULT_BUDDYBORDER  2 /* Width/height of the buddy border */
  #define DEFAULT_BUDDYSPACER  2 /* Spacer between the buddy and the ctrl */
  #define DEFAULT_BUDDYBORDER_THEMED  1 /* buddy border when theming is enabled */
  #define DEFAULT_BUDDYSPACER_THEMED  0 /* buddy spacer when theming is enabled */
  
  /* Work constants */
  
  #define FLAG_INCR	0x01
  #define FLAG_DECR	0x02
  #define FLAG_MOUSEIN	0x04
  #define FLAG_PRESSED	0x08
  #define FLAG_BUDDYINT	0x10 /* UDS_SETBUDDYINT was set on creation */
  #define FLAG_ARROW	(FLAG_INCR | FLAG_DECR)
  
  #define BUDDY_TYPE_UNKNOWN 0
  #define BUDDY_TYPE_LISTBOX 1
  #define BUDDY_TYPE_EDIT    2
  
  #define TIMER_AUTOREPEAT   1
  #define TIMER_ACCEL        2
  #define TIMER_AUTOPRESS    3
  
  #define UPDOWN_GetInfoPtr(hwnd) ((UPDOWN_INFO *)GetWindowLongPtrW (hwnd,0))
  #define COUNT_OF(a) (sizeof(a)/sizeof(a[0]))
  
  /* id used for SetWindowSubclass */
  #define BUDDY_SUBCLASSID   1
  
  static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action);
  
  /***********************************************************************
   *           UPDOWN_IsBuddyEdit
   * Tests if our buddy is an edit control.
   */
  static inline BOOL UPDOWN_IsBuddyEdit(const UPDOWN_INFO *infoPtr)
  {
      return infoPtr->BuddyType == BUDDY_TYPE_EDIT;
  }
  
  /***********************************************************************
   *           UPDOWN_IsBuddyListbox
   * Tests if our buddy is a listbox control.
   */
  static inline BOOL UPDOWN_IsBuddyListbox(const UPDOWN_INFO *infoPtr)
  {
      return infoPtr->BuddyType == BUDDY_TYPE_LISTBOX;
  }
  
  /***********************************************************************
   *           UPDOWN_InBounds
   * Tests if a given value 'val' is between the Min&Max limits
   */
  static BOOL UPDOWN_InBounds(const UPDOWN_INFO *infoPtr, int val)
  {
      if(infoPtr->MaxVal > infoPtr->MinVal)
          return (infoPtr->MinVal <= val) && (val <= infoPtr->MaxVal);
      else
          return (infoPtr->MaxVal <= val) && (val <= infoPtr->MinVal);
  }
  
  /***********************************************************************
   *           UPDOWN_OffsetVal
   * Change the current value by delta.
   * It returns TRUE is the value was changed successfully, or FALSE
   * if the value was not changed, as it would go out of bounds.
   */
  static BOOL UPDOWN_OffsetVal(UPDOWN_INFO *infoPtr, int delta)
  {
      /* check if we can do the modification first */
      if(!UPDOWN_InBounds (infoPtr, infoPtr->CurVal+delta)) {
          if (infoPtr->dwStyle & UDS_WRAP) {
              delta += (delta < 0 ? -1 : 1) *
  		     (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1) *
  		     (infoPtr->MinVal - infoPtr->MaxVal) +
  		     (delta < 0 ? 1 : -1);
          } else if ((infoPtr->MaxVal > infoPtr->MinVal && infoPtr->CurVal+delta > infoPtr->MaxVal)
                  || (infoPtr->MaxVal < infoPtr->MinVal && infoPtr->CurVal+delta < infoPtr->MaxVal)) {
              delta = infoPtr->MaxVal - infoPtr->CurVal;
          } else {
              delta = infoPtr->MinVal - infoPtr->CurVal;
          }
      }
  
      infoPtr->CurVal += delta;
      return delta != 0;
  }
  
  /***********************************************************************
   * UPDOWN_HasBuddyBorder
   *
   * When we have a buddy set and that we are aligned on our buddy, we
   * want to draw a sunken edge to make like we are part of that control.
   */
  static BOOL UPDOWN_HasBuddyBorder(const UPDOWN_INFO *infoPtr)
  {
      return  ( ((infoPtr->dwStyle & (UDS_ALIGNLEFT | UDS_ALIGNRIGHT)) != 0) &&
  	      UPDOWN_IsBuddyEdit(infoPtr) );
  }
  
  /***********************************************************************
   *           UPDOWN_GetArrowRect
   * wndPtr   - pointer to the up-down wnd
   * rect     - will hold the rectangle
   * arrow    - FLAG_INCR to get the "increment" rect (up or right)
   *            FLAG_DECR to get the "decrement" rect (down or left)
   *            If both flags are present, the envelope is returned.
   */
  static void UPDOWN_GetArrowRect (const UPDOWN_INFO* infoPtr, RECT *rect, int arrow)
  {
      HTHEME theme = GetWindowTheme (infoPtr->Self);
      const int border = theme ? DEFAULT_BUDDYBORDER_THEMED : DEFAULT_BUDDYBORDER;
      const int spacer = theme ? DEFAULT_BUDDYSPACER_THEMED : DEFAULT_BUDDYSPACER;
      GetClientRect (infoPtr->Self, rect);
  
      /*
       * Make sure we calculate the rectangle to fit even if we draw the
       * border.
       */
      if (UPDOWN_HasBuddyBorder(infoPtr)) {
          if (infoPtr->dwStyle & UDS_ALIGNLEFT)
              rect->left += border;
          else
              rect->right -= border;
  
          InflateRect(rect, 0, -border);
      }
  
      /* now figure out if we need a space away from the buddy */
      if (IsWindow(infoPtr->Buddy) ) {
  	if (infoPtr->dwStyle & UDS_ALIGNLEFT) rect->right -= spacer;
  	else if (infoPtr->dwStyle & UDS_ALIGNRIGHT) rect->left += spacer;
      }
  
      /*
       * We're calculating the midpoint to figure-out where the
       * separation between the buttons will lay. We make sure that we
       * round the uneven numbers by adding 1.
       */
      if (infoPtr->dwStyle & UDS_HORZ) {
          int len = rect->right - rect->left + 1; /* compute the width */
          if (arrow & FLAG_INCR)
              rect->left = rect->left + len/2;
          if (arrow & FLAG_DECR)
              rect->right =  rect->left + len/2 - (theme ? 0 : 1);
      } else {
          int len = rect->bottom - rect->top + 1; /* compute the height */
          if (arrow & FLAG_INCR)
              rect->bottom =  rect->top + len/2 - (theme ? 0 : 1);
          if (arrow & FLAG_DECR)
              rect->top =  rect->top + len/2;
      }
  }
  
  /***********************************************************************
   *           UPDOWN_GetArrowFromPoint
   * Returns the rectagle (for the up or down arrow) that contains pt.
   * If it returns the up rect, it returns FLAG_INCR.
   * If it returns the down rect, it returns FLAG_DECR.
   */
  static INT UPDOWN_GetArrowFromPoint (const UPDOWN_INFO *infoPtr, RECT *rect, POINT pt)
  {
      UPDOWN_GetArrowRect (infoPtr, rect, FLAG_INCR);
      if(PtInRect(rect, pt)) return FLAG_INCR;
  
      UPDOWN_GetArrowRect (infoPtr, rect, FLAG_DECR);
      if(PtInRect(rect, pt)) return FLAG_DECR;
  
      return 0;
  }
  
  
  /***********************************************************************
   *           UPDOWN_GetThousandSep
   * Returns the thousand sep. If an error occurs, it returns ','.
   */
  static WCHAR UPDOWN_GetThousandSep(void)
  {
      WCHAR sep[2];
  
      if(GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, sep, 2) != 1)
          sep[0] = ',';
  
      return sep[0];
  }
  
  /***********************************************************************
   *           UPDOWN_GetBuddyInt
   * Tries to read the pos from the buddy window and if it succeeds,
   * it stores it in the control's CurVal
   * returns:
   *   TRUE  - if it read the integer from the buddy successfully
   *   FALSE - if an error occurred
   */
  static BOOL UPDOWN_GetBuddyInt (UPDOWN_INFO *infoPtr)
  {
      WCHAR txt[20], sep, *src, *dst;
      int newVal;
  
      if (!((infoPtr->Flags & FLAG_BUDDYINT) && IsWindow(infoPtr->Buddy)))
          return FALSE;
  
      /*if the buddy is a list window, we must set curr index */
      if (UPDOWN_IsBuddyListbox(infoPtr)) {
          newVal = SendMessageW(infoPtr->Buddy, LB_GETCARETINDEX, 0, 0);
          if(newVal < 0) return FALSE;
      } else {
          /* we have a regular window, so will get the text */
          /* note that a zero-length string is a legitimate value for 'txt',
           * and ought to result in a successful conversion to '0'. */
          if (GetWindowTextW(infoPtr->Buddy, txt, COUNT_OF(txt)) < 0)
              return FALSE;
  
          sep = UPDOWN_GetThousandSep();
  
          /* now get rid of the separators */
          for(src = dst = txt; *src; src++)
              if(*src != sep) *dst++ = *src;
          *dst = 0;
  
          /* try to convert the number and validate it */
          newVal = strtolW(txt, &src, infoPtr->Base);
          if(*src || !UPDOWN_InBounds (infoPtr, newVal)) return FALSE;
      }
  
      TRACE("new value(%d) from buddy (old=%d)\n", newVal, infoPtr->CurVal);
      infoPtr->CurVal = newVal;
      return TRUE;
  }
  
  
  /***********************************************************************
   *           UPDOWN_SetBuddyInt
   * Tries to set the pos to the buddy window based on current pos
   * returns:
   *   TRUE  - if it set the caption of the  buddy successfully
   *   FALSE - if an error occurred
   */
  static BOOL UPDOWN_SetBuddyInt (const UPDOWN_INFO *infoPtr)
  {
      static const WCHAR fmt_hex[] = { '0', 'x', '%', '0', '4', 'X', 0 };
      static const WCHAR fmt_dec_oct[] = { '%', 'd', '\0' };
      const WCHAR *fmt;
      WCHAR txt[20], txt_old[20] = { 0 };
      int len;
  
      if (!((infoPtr->Flags & FLAG_BUDDYINT) && IsWindow(infoPtr->Buddy)))
          return FALSE;
  
      TRACE("set new value(%d) to buddy.\n", infoPtr->CurVal);
  
      /*if the buddy is a list window, we must set curr index */
      if (UPDOWN_IsBuddyListbox(infoPtr)) {
          return SendMessageW(infoPtr->Buddy, LB_SETCURSEL, infoPtr->CurVal, 0) != LB_ERR;
      }
  
      /* Regular window, so set caption to the number */
      fmt = (infoPtr->Base == 16) ? fmt_hex : fmt_dec_oct;
      len = wsprintfW(txt, fmt, infoPtr->CurVal);
  
  
      /* Do thousands separation if necessary */
      if ((infoPtr->Base == 10) && !(infoPtr->dwStyle & UDS_NOTHOUSANDS) && (len > 3)) {
          WCHAR tmp[COUNT_OF(txt)], *src = tmp, *dst = txt;
          WCHAR sep = UPDOWN_GetThousandSep();
  	int start = len % 3;
  
  	memcpy(tmp, txt, sizeof(txt));
  	if (start == 0) start = 3;
  	dst += start;
  	src += start;
          for (len=0; *src; len++) {
  	    if (len % 3 == 0) *dst++ = sep;
  	    *dst++ = *src++;
          }
          *dst = 0;
      }
  
      /* if nothing changed exit earlier */
      GetWindowTextW(infoPtr->Buddy, txt_old, sizeof(txt_old)/sizeof(WCHAR));
      if (lstrcmpiW(txt_old, txt) == 0) return FALSE;
  
      return SetWindowTextW(infoPtr->Buddy, txt);
  }
  
  /***********************************************************************
   * UPDOWN_DrawBuddyBackground
   *
   * Draw buddy background for visual integration.
   */
  static BOOL UPDOWN_DrawBuddyBackground (const UPDOWN_INFO *infoPtr, HDC hdc)
  {
      RECT br, r;
      HTHEME buddyTheme = GetWindowTheme (infoPtr->Buddy);
      if (!buddyTheme) return FALSE;
  
      GetWindowRect (infoPtr->Buddy, &br);
      MapWindowPoints (NULL, infoPtr->Self, (POINT*)&br, 2);
      GetClientRect (infoPtr->Self, &r);
  
      if (infoPtr->dwStyle & UDS_ALIGNLEFT)
          br.left = r.left;
      else if (infoPtr->dwStyle & UDS_ALIGNRIGHT)
          br.right = r.right;
      /* FIXME: take disabled etc. into account */
      DrawThemeBackground (buddyTheme, hdc, 0, 0, &br, NULL);
      return TRUE;
  }
  
  /***********************************************************************
   * UPDOWN_Draw
   *
   * Draw the arrows. The background need not be erased.
   */
  static LRESULT UPDOWN_Draw (const UPDOWN_INFO *infoPtr, HDC hdc)
  {
      BOOL uPressed, uHot, dPressed, dHot;
      RECT rect;
      HTHEME theme = GetWindowTheme (infoPtr->Self);
      int uPart = 0, uState = 0, dPart = 0, dState = 0;
      BOOL needBuddyBg = FALSE;
  
      uPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_INCR);
      uHot = (infoPtr->Flags & FLAG_INCR) && (infoPtr->Flags & FLAG_MOUSEIN);
      dPressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_DECR);
      dHot = (infoPtr->Flags & FLAG_DECR) && (infoPtr->Flags & FLAG_MOUSEIN);
      if (theme) {
          uPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_UPHORZ : SPNP_UP;
          uState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
              : (uPressed ? DNS_PRESSED : (uHot ? DNS_HOT : DNS_NORMAL));
          dPart = (infoPtr->dwStyle & UDS_HORZ) ? SPNP_DOWNHORZ : SPNP_DOWN;
          dState = (infoPtr->dwStyle & WS_DISABLED) ? DNS_DISABLED 
              : (dPressed ? DNS_PRESSED : (dHot ? DNS_HOT : DNS_NORMAL));
          needBuddyBg = IsWindow (infoPtr->Buddy)
              && (IsThemeBackgroundPartiallyTransparent (theme, uPart, uState)
                || IsThemeBackgroundPartiallyTransparent (theme, dPart, dState));
      }
  
      /* Draw the common border between ourselves and our buddy */
      if (UPDOWN_HasBuddyBorder(infoPtr) || needBuddyBg) {
          if (!theme || !UPDOWN_DrawBuddyBackground (infoPtr, hdc)) {
              GetClientRect(infoPtr->Self, &rect);
  	    DrawEdge(hdc, &rect, EDGE_SUNKEN,
  		     BF_BOTTOM | BF_TOP |
  		     (infoPtr->dwStyle & UDS_ALIGNLEFT ? BF_LEFT : BF_RIGHT));
          }
      }
  
      /* Draw the incr button */
      UPDOWN_GetArrowRect (infoPtr, &rect, FLAG_INCR);
      if (theme) {
          DrawThemeBackground(theme, hdc, uPart, uState, &rect, NULL);
      } else {
          DrawFrameControl(hdc, &rect, DFC_SCROLL,
              (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLRIGHT : DFCS_SCROLLUP) |
              ((infoPtr->dwStyle & UDS_HOTTRACK) && uHot ? DFCS_HOT : 0) |
              (uPressed ? DFCS_PUSHED : 0) |
              (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
      }
  
      /* Draw the decr button */
      UPDOWN_GetArrowRect(infoPtr, &rect, FLAG_DECR);
      if (theme) {
          DrawThemeBackground(theme, hdc, dPart, dState, &rect, NULL);
      } else {
          DrawFrameControl(hdc, &rect, DFC_SCROLL,
              (infoPtr->dwStyle & UDS_HORZ ? DFCS_SCROLLLEFT : DFCS_SCROLLDOWN) |
              ((infoPtr->dwStyle & UDS_HOTTRACK) && dHot ? DFCS_HOT : 0) |
              (dPressed ? DFCS_PUSHED : 0) |
              (infoPtr->dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
      }
  
      return 0;
  }
  
  /***********************************************************************
   * UPDOWN_Paint
   *
   * Asynchronous drawing (must ONLY be used in WM_PAINT).
   * Calls UPDOWN_Draw.
   */
  static LRESULT UPDOWN_Paint (const UPDOWN_INFO *infoPtr, HDC hdc)
  {
      PAINTSTRUCT ps;
      if (hdc) return UPDOWN_Draw (infoPtr, hdc);
      hdc = BeginPaint (infoPtr->Self, &ps);
      UPDOWN_Draw (infoPtr, hdc);
      EndPaint (infoPtr->Self, &ps);
      return 0;
  }
  
  /***********************************************************************
   * UPDOWN_KeyPressed
   *
   * Handle key presses (up & down) when we have to do so
   */
  static LRESULT UPDOWN_KeyPressed(UPDOWN_INFO *infoPtr, int key)
  {
      int arrow, accel;
  
      if (key == VK_UP) arrow = FLAG_INCR;
      else if (key == VK_DOWN) arrow = FLAG_DECR;
      else return 1;
  
      UPDOWN_GetBuddyInt (infoPtr);
      infoPtr->Flags &= ~FLAG_ARROW;
      infoPtr->Flags |= FLAG_PRESSED | arrow;
      InvalidateRect (infoPtr->Self, NULL, FALSE);
      SetTimer(infoPtr->Self, TIMER_AUTOPRESS, AUTOPRESS_DELAY, 0);
      accel = (infoPtr->AccelCount && infoPtr->AccelVect) ? infoPtr->AccelVect[0].nInc : 1;
      UPDOWN_DoAction (infoPtr, accel, arrow);
      return 0;
  }
  
  static int UPDOWN_GetPos(UPDOWN_INFO *infoPtr, BOOL *err)
  {
      BOOL succ = UPDOWN_GetBuddyInt(infoPtr);
      int val = infoPtr->CurVal;
  
      if(!UPDOWN_InBounds(infoPtr, val)) {
          if((infoPtr->MinVal < infoPtr->MaxVal && val < infoPtr->MinVal)
                  || (infoPtr->MinVal > infoPtr->MaxVal && val > infoPtr->MinVal))
              val = infoPtr->MinVal;
          else
              val = infoPtr->MaxVal;
  
          succ = FALSE;
      }
  
      if(err) *err = !succ;
      return val;
  }
  
  static int UPDOWN_SetPos(UPDOWN_INFO *infoPtr, int pos)
  {
      int ret = infoPtr->CurVal;
  
      if(!UPDOWN_InBounds(infoPtr, pos)) {
          if((infoPtr->MinVal < infoPtr->MaxVal && pos < infoPtr->MinVal)
                  || (infoPtr->MinVal > infoPtr->MaxVal && pos > infoPtr->MinVal))
              pos = infoPtr->MinVal;
          else
              pos = infoPtr->MaxVal;
      }
  
      infoPtr->CurVal = pos;
      UPDOWN_SetBuddyInt(infoPtr);
  
      if(!UPDOWN_InBounds(infoPtr, ret)) {
          if((infoPtr->MinVal < infoPtr->MaxVal && ret < infoPtr->MinVal)
                  || (infoPtr->MinVal > infoPtr->MaxVal && ret > infoPtr->MinVal))
              ret = infoPtr->MinVal;
          else
              ret = infoPtr->MaxVal;
      }
      return ret;
  }
  
  
  /***********************************************************************
   * UPDOWN_SetRange
   *
   * Handle UDM_SETRANGE, UDM_SETRANGE32
   *
   * FIXME: handle Max == Min properly:
   *        - arrows should be disabled (without WS_DISABLED set),
   *          visually they can't be pressed and don't respond;
   *        - all input messages should still pass in.
   */
  static LRESULT UPDOWN_SetRange(UPDOWN_INFO *infoPtr, INT Max, INT Min)
  {
      infoPtr->MaxVal = Max;
      infoPtr->MinVal = Min;
  
      TRACE("UpDown Ctrl new range(%d to %d), hwnd=%p\n",
             infoPtr->MinVal, infoPtr->MaxVal, infoPtr->Self);
  
      return 0;
  }
  
  /***********************************************************************
   * UPDOWN_MouseWheel
   *
   * Handle mouse wheel scrolling
   */
  static LRESULT UPDOWN_MouseWheel(UPDOWN_INFO *infoPtr, WPARAM wParam)
  {
      int iWheelDelta = GET_WHEEL_DELTA_WPARAM(wParam) / WHEEL_DELTA;
  
      if (wParam & (MK_SHIFT | MK_CONTROL))
          return 0;
  
      if (iWheelDelta != 0)
      {
          UPDOWN_GetBuddyInt(infoPtr);
          UPDOWN_DoAction(infoPtr, abs(iWheelDelta), iWheelDelta > 0 ? FLAG_INCR : FLAG_DECR);
      }
  
      return 1;
  }
  
  
  /***********************************************************************
   * UPDOWN_Buddy_SubclassProc used to handle messages sent to the buddy
   *                           control.
   */
  static LRESULT CALLBACK
  UPDOWN_Buddy_SubclassProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
                            UINT_PTR uId, DWORD_PTR ref_data)
  {
      UPDOWN_INFO *infoPtr = UPDOWN_GetInfoPtr((HWND)ref_data);
  
      TRACE("hwnd=%p, uMsg=%04x, wParam=%08lx, lParam=%08lx\n",
            hwnd, uMsg, wParam, lParam);
  
      switch(uMsg)
      {
      case WM_KEYDOWN:
          if (infoPtr)
          {
              UPDOWN_KeyPressed(infoPtr, (int)wParam);
              if (wParam == VK_UP || wParam == VK_DOWN)
                  return 0;
          }
          break;
  
      case WM_MOUSEWHEEL:
          if (infoPtr)
              UPDOWN_MouseWheel(infoPtr, (int)wParam);
          break;
  
      case WM_NCDESTROY:
          RemoveWindowSubclass(hwnd, UPDOWN_Buddy_SubclassProc, BUDDY_SUBCLASSID);
          break;
      default:
  	break;
      }
  
      return DefSubclassProc(hwnd, uMsg, wParam, lParam);
  }
  
  static void UPDOWN_ResetSubclass (UPDOWN_INFO *infoPtr)
  {
      SetWindowSubclass(infoPtr->Buddy, UPDOWN_Buddy_SubclassProc, BUDDY_SUBCLASSID, 0);
  }
  
  /***********************************************************************
   *           UPDOWN_SetBuddy
   *
   * Sets bud as a new Buddy.
   * Then, it should subclass the buddy
   * If window has the UDS_ARROWKEYS, it subclasses the buddy window to
   * process the UP/DOWN arrow keys.
   * If window has the UDS_ALIGNLEFT or UDS_ALIGNRIGHT style
   * the size/pos of the buddy and the control are adjusted accordingly.
   */
  static HWND UPDOWN_SetBuddy (UPDOWN_INFO* infoPtr, HWND bud)
  {
      RECT  budRect;  /* new coord for the buddy */
      int   x, width;  /* new x position and width for the up-down */
      WCHAR buddyClass[40];
      HWND old_buddy;
  
      TRACE("(hwnd=%p, bud=%p)\n", infoPtr->Self, bud);
  
      old_buddy = infoPtr->Buddy;
  
      UPDOWN_ResetSubclass (infoPtr);
  
      if (!IsWindow(bud)) bud = NULL;
  
      /* Store buddy window handle */
      infoPtr->Buddy = bud;
  
      if(bud) {
          /* Store buddy window class type */
          infoPtr->BuddyType = BUDDY_TYPE_UNKNOWN;
          if (GetClassNameW(bud, buddyClass, COUNT_OF(buddyClass))) {
              if (lstrcmpiW(buddyClass, WC_EDITW) == 0)
                  infoPtr->BuddyType = BUDDY_TYPE_EDIT;
              else if (lstrcmpiW(buddyClass, WC_LISTBOXW) == 0)
                  infoPtr->BuddyType = BUDDY_TYPE_LISTBOX;
          }
  
          if (infoPtr->dwStyle & UDS_ARROWKEYS)
              SetWindowSubclass(bud, UPDOWN_Buddy_SubclassProc, BUDDY_SUBCLASSID,
                                (DWORD_PTR)infoPtr->Self);
  
          /* Get the rect of the buddy relative to its parent */
          GetWindowRect(infoPtr->Buddy, &budRect);
          MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Buddy), (POINT *)(&budRect.left), 2);
  
          /* now do the positioning */
          if  (infoPtr->dwStyle & UDS_ALIGNLEFT) {
              x  = budRect.left;
              budRect.left += DEFAULT_WIDTH + DEFAULT_XSEP;
          } else if (infoPtr->dwStyle & UDS_ALIGNRIGHT) {
              budRect.right -= DEFAULT_WIDTH + DEFAULT_XSEP;
              x  = budRect.right+DEFAULT_XSEP;
          } else {
              /* nothing to do */
              return old_buddy;
          }
  
          /* first adjust the buddy to accommodate the up/down */
          SetWindowPos(infoPtr->Buddy, 0, budRect.left, budRect.top,
                       budRect.right  - budRect.left, budRect.bottom - budRect.top,
                       SWP_NOACTIVATE|SWP_NOZORDER);
  
          /* now position the up/down */
          /* Since the UDS_ALIGN* flags were used, */
          /* we will pick the position and size of the window. */
          width = DEFAULT_WIDTH;
  
          /*
           * If the updown has a buddy border, it has to overlap with the buddy
           * to look as if it is integrated with the buddy control.
           * We nudge the control or change its size to overlap.
           */
          if (UPDOWN_HasBuddyBorder(infoPtr)) {
              if(infoPtr->dwStyle & UDS_ALIGNLEFT)
                  width += DEFAULT_BUDDYBORDER;
              else
                  x -= DEFAULT_BUDDYBORDER;
          }
  
          SetWindowPos(infoPtr->Self, 0, x,
                       budRect.top - DEFAULT_ADDTOP, width,
                       budRect.bottom - budRect.top + DEFAULT_ADDTOP + DEFAULT_ADDBOT,
                       SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
      } else if (!(infoPtr->dwStyle & UDS_HORZ) && old_buddy != NULL) {
          RECT rect;
          GetWindowRect(infoPtr->Self, &rect);
          MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Self), (POINT *)&rect, 2);
          SetWindowPos(infoPtr->Self, 0, rect.left, rect.top, DEFAULT_WIDTH, rect.bottom - rect.top,
                       SWP_NOACTIVATE|SWP_FRAMECHANGED|SWP_NOZORDER);
      }
  
      return old_buddy;
  }
  
  /***********************************************************************
   *           UPDOWN_DoAction
   *
   * This function increments/decrements the CurVal by the
   * 'delta' amount according to the 'action' flag which can be a
   * combination of FLAG_INCR and FLAG_DECR
   * It notifies the parent as required.
   * It handles wrapping and non-wrapping correctly.
   * It is assumed that delta>0
   */
  static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action)
  {
      NM_UPDOWN ni;
  
      TRACE("%d by %d\n", action, delta);
  
      /* check if we can do the modification first */
      delta *= (action & FLAG_INCR ? 1 : -1) * (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1);
      if ( (action & FLAG_INCR) && (action & FLAG_DECR) ) delta = 0;
  
      TRACE("current %d, delta: %d\n", infoPtr->CurVal, delta);
  
      /* We must notify parent now to obtain permission */
      ni.iPos = infoPtr->CurVal;
      ni.iDelta = delta;
      ni.hdr.hwndFrom = infoPtr->Self;
      ni.hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
      ni.hdr.code = UDN_DELTAPOS;
      if (!SendMessageW(infoPtr->Notify, WM_NOTIFY, ni.hdr.idFrom, (LPARAM)&ni)) {
          /* Parent said: OK to adjust */
  
          /* Now adjust value with (maybe new) delta */
          if (UPDOWN_OffsetVal (infoPtr, ni.iDelta)) {
              TRACE("new %d, delta: %d\n", infoPtr->CurVal, ni.iDelta);
  
              /* Now take care about our buddy */
              UPDOWN_SetBuddyInt (infoPtr);
          }
      }
  
      /* Also, notify it. This message is sent in any case. */
      SendMessageW( infoPtr->Notify, (infoPtr->dwStyle & UDS_HORZ) ? WM_HSCROLL : WM_VSCROLL,
  		  MAKELONG(SB_THUMBPOSITION, infoPtr->CurVal), (LPARAM)infoPtr->Self);
  }
  
  /***********************************************************************
   *           UPDOWN_IsEnabled
   *
   * Returns TRUE if it is enabled as well as its buddy (if any)
   *         FALSE otherwise
   */
  static BOOL UPDOWN_IsEnabled (const UPDOWN_INFO *infoPtr)
  {
      if (!IsWindowEnabled(infoPtr->Self))
          return FALSE;
      if(infoPtr->Buddy)
          return IsWindowEnabled(infoPtr->Buddy);
      return TRUE;
  }
  
  /***********************************************************************
   *           UPDOWN_CancelMode
   *
   * Deletes any timers, releases the mouse and does  redraw if necessary.
   * If the control is not in "capture" mode, it does nothing.
   * If the control was not in cancel mode, it returns FALSE.
   * If the control was in cancel mode, it returns TRUE.
   */
  static BOOL UPDOWN_CancelMode (UPDOWN_INFO *infoPtr)
  {
      if (!(infoPtr->Flags & FLAG_PRESSED)) return FALSE;
  
      KillTimer (infoPtr->Self, TIMER_AUTOREPEAT);
      KillTimer (infoPtr->Self, TIMER_ACCEL);
      KillTimer (infoPtr->Self, TIMER_AUTOPRESS);
  
      if (GetCapture() == infoPtr->Self) {
  	NMHDR hdr;
  	hdr.hwndFrom = infoPtr->Self;
  	hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
  	hdr.code = NM_RELEASEDCAPTURE;
  	SendMessageW(infoPtr->Notify, WM_NOTIFY, hdr.idFrom, (LPARAM)&hdr);
  	ReleaseCapture();
      }
  
      infoPtr->Flags &= ~FLAG_PRESSED;
      InvalidateRect (infoPtr->Self, NULL, FALSE);
  
      return TRUE;
  }
  
  /***********************************************************************
   *           UPDOWN_HandleMouseEvent
   *
   * Handle a mouse event for the updown.
   * 'pt' is the location of the mouse event in client or
   * windows coordinates.
   */
  static void UPDOWN_HandleMouseEvent (UPDOWN_INFO *infoPtr, UINT msg, INT x, INT y)
  {
      POINT pt = { x, y };
      RECT rect;
      int temp, arrow;
      TRACKMOUSEEVENT tme;
  
      TRACE("msg %04x point %s\n", msg, wine_dbgstr_point(&pt));
  
      switch(msg)
      {
          case WM_LBUTTONDOWN:  /* Initialise mouse tracking */
  
              /* If the buddy is an edit, will set focus to it */
  	    if (UPDOWN_IsBuddyEdit(infoPtr)) SetFocus(infoPtr->Buddy);
  
              /* Now see which one is the 'active' arrow */
              arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);
  
              /* Update the flags if we are in/out */
              infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
              if (arrow)
                  infoPtr->Flags |= FLAG_MOUSEIN | arrow;
              else
                  if (infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;
  
  	    if (infoPtr->Flags & FLAG_ARROW) {
  
              	/* Update the CurVal if necessary */
              	UPDOWN_GetBuddyInt (infoPtr);
  
              	/* Set up the correct flags */
              	infoPtr->Flags |= FLAG_PRESSED;
  
              	/* repaint the control */
  	    	InvalidateRect (infoPtr->Self, NULL, FALSE);
  
              	/* process the click */
  		temp = (infoPtr->AccelCount && infoPtr->AccelVect) ? infoPtr->AccelVect[0].nInc : 1;
              	UPDOWN_DoAction (infoPtr, temp, infoPtr->Flags & FLAG_ARROW);
  
              	/* now capture all mouse messages */
              	SetCapture (infoPtr->Self);
  
              	/* and startup the first timer */
              	SetTimer(infoPtr->Self, TIMER_AUTOREPEAT, INITIAL_DELAY, 0);
  	    }
              break;
  
  	case WM_MOUSEMOVE:
              /* save the flags to see if any got modified */
              temp = infoPtr->Flags;
  
              /* Now see which one is the 'active' arrow */
              arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);
  
              /* Update the flags if we are in/out */
  	    infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
              if(arrow) {
  	        infoPtr->Flags |=  FLAG_MOUSEIN | arrow;
              } else {
  	        if(infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;
              }
  
              /* If state changed, redraw the control */
              if(temp != infoPtr->Flags)
  		 InvalidateRect (infoPtr->Self, NULL, FALSE);
  
              /* Set up tracking so the mousein flags can be reset when the 
               * mouse leaves the control */
              tme.cbSize = sizeof( tme );
              tme.dwFlags = TME_LEAVE;
              tme.hwndTrack = infoPtr->Self;
              TrackMouseEvent (&tme);
  
              break;
          case WM_MOUSELEAVE:
  	    infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
              InvalidateRect (infoPtr->Self, NULL, FALSE);
              break;
  
  	default:
  	    ERR("Impossible case (msg=%x)!\n", msg);
      }
  
  }
  
  /***********************************************************************
   *           UpDownWndProc
   */
  static LRESULT WINAPI UpDownWindowProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
  {
      UPDOWN_INFO *infoPtr = UPDOWN_GetInfoPtr (hwnd);
      static const WCHAR themeClass[] = {'S','p','i','n',0};
      HTHEME theme;
  
      TRACE("hwnd=%p msg=%04x wparam=%08lx lparam=%08lx\n", hwnd, message, wParam, lParam);
  
      if (!infoPtr && (message != WM_CREATE))
          return DefWindowProcW (hwnd, message, wParam, lParam);
  
      switch(message)
      {
          case WM_CREATE:
  	    {
  	    CREATESTRUCTW *pcs = (CREATESTRUCTW*)lParam;
  
              infoPtr = heap_alloc_zero(sizeof(*infoPtr));
  	    SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
  
  	    /* initialize the info struct */
  	    infoPtr->Self = hwnd;
  	    infoPtr->Notify  = pcs->hwndParent;
  	    infoPtr->dwStyle = pcs->style;
  	    infoPtr->AccelCount = 0;
  	    infoPtr->AccelVect = 0;
  	    infoPtr->AccelIndex = -1;
  	    infoPtr->CurVal = 0;
  	    infoPtr->MinVal = 100;
  	    infoPtr->MaxVal = 0;
  	    infoPtr->Base  = 10; /* Default to base 10  */
  	    infoPtr->Buddy = 0;  /* No buddy window yet */
  	    infoPtr->Flags = (infoPtr->dwStyle & UDS_SETBUDDYINT) ? FLAG_BUDDYINT : 0;
  
              SetWindowLongW (hwnd, GWL_STYLE, infoPtr->dwStyle & ~WS_BORDER);
  	    if (!(infoPtr->dwStyle & UDS_HORZ))
  	        SetWindowPos (hwnd, NULL, 0, 0, DEFAULT_WIDTH, pcs->cy,
  	                      SWP_NOOWNERZORDER | SWP_NOZORDER | SWP_NOMOVE);
  
              /* Do we pick the buddy win ourselves? */
  	    if (infoPtr->dwStyle & UDS_AUTOBUDDY)
  		UPDOWN_SetBuddy (infoPtr, GetWindow (hwnd, GW_HWNDPREV));
  
  	    OpenThemeData (hwnd, themeClass);
  
  	    TRACE("UpDown Ctrl creation, hwnd=%p\n", hwnd);
  	    }
  	    break;
  
  	case WM_DESTROY:
  	    heap_free (infoPtr->AccelVect);
              UPDOWN_ResetSubclass (infoPtr);
  	    heap_free (infoPtr);
  	    SetWindowLongPtrW (hwnd, 0, 0);
              theme = GetWindowTheme (hwnd);
              CloseThemeData (theme);
  	    TRACE("UpDown Ctrl destruction, hwnd=%p\n", hwnd);
  	    break;
  
  	case WM_ENABLE:
  	    if (wParam) {
  		infoPtr->dwStyle &= ~WS_DISABLED;
  	    } else {
  		infoPtr->dwStyle |= WS_DISABLED;
  	    	UPDOWN_CancelMode (infoPtr);
  	    }
  	    InvalidateRect (infoPtr->Self, NULL, FALSE);
  	    break;
  
          case WM_STYLECHANGED:
              if (wParam == GWL_STYLE) {
                  infoPtr->dwStyle = ((LPSTYLESTRUCT)lParam)->styleNew;
  	        InvalidateRect (infoPtr->Self, NULL, FALSE);
              }
              break;
  
          case WM_THEMECHANGED:
              theme = GetWindowTheme (hwnd);
              CloseThemeData (theme);
              OpenThemeData (hwnd, themeClass);
              InvalidateRect (hwnd, NULL, FALSE);
              break;
  
  	case WM_TIMER:
  	   /* is this the auto-press timer? */
  	   if(wParam == TIMER_AUTOPRESS) {
  		KillTimer(hwnd, TIMER_AUTOPRESS);
  		infoPtr->Flags &= ~(FLAG_PRESSED | FLAG_ARROW);
  		InvalidateRect(infoPtr->Self, NULL, FALSE);
  	   }
  
  	   /* if initial timer, kill it and start the repeat timer */
    	   if(wParam == TIMER_AUTOREPEAT) {
  		INT delay;
  
  		KillTimer(hwnd, TIMER_AUTOREPEAT);
  		/* if no accel info given, used default timer */
  		if(infoPtr->AccelCount==0 || infoPtr->AccelVect==0) {
  		    infoPtr->AccelIndex = -1;
  		    delay = REPEAT_DELAY;
  		} else {
  		    infoPtr->AccelIndex = 0; /* otherwise, use it */
  		    delay = infoPtr->AccelVect[infoPtr->AccelIndex].nSec * 1000 + 1;
  		}
  		SetTimer(hwnd, TIMER_ACCEL, delay, 0);
        	    }
  
  	    /* now, if the mouse is above us, do the thing...*/
  	    if(infoPtr->Flags & FLAG_MOUSEIN) {
  		int temp;
  
  		temp = infoPtr->AccelIndex == -1 ? 1 : infoPtr->AccelVect[infoPtr->AccelIndex].nInc;
  		UPDOWN_DoAction(infoPtr, temp, infoPtr->Flags & FLAG_ARROW);
  
  		if(infoPtr->AccelIndex != -1 && infoPtr->AccelIndex < infoPtr->AccelCount-1) {
  		    KillTimer(hwnd, TIMER_ACCEL);
  		    infoPtr->AccelIndex++; /* move to the next accel info */
  		    temp = infoPtr->AccelVect[infoPtr->AccelIndex].nSec * 1000 + 1;
  	  	    /* make sure we have at least 1ms intervals */
  		    SetTimer(hwnd, TIMER_ACCEL, temp, 0);
  		}
  	    }
  	    break;
  
  	case WM_CANCELMODE:
  	  return UPDOWN_CancelMode (infoPtr);
  
  	case WM_LBUTTONUP:
  	    if (GetCapture() != infoPtr->Self) break;
  
  	    if ( (infoPtr->Flags & FLAG_MOUSEIN) &&
  		 (infoPtr->Flags & FLAG_ARROW) ) {
  
  	    	SendMessageW( infoPtr->Notify,
  			      (infoPtr->dwStyle & UDS_HORZ) ? WM_HSCROLL : WM_VSCROLL,
                    	      MAKELONG(SB_ENDSCROLL, infoPtr->CurVal),
  			      (LPARAM)hwnd);
  		if (UPDOWN_IsBuddyEdit(infoPtr))
  		    SendMessageW(infoPtr->Buddy, EM_SETSEL, 0, MAKELONG(0, -1));
  	    }
  	    UPDOWN_CancelMode(infoPtr);
  	    break;
  
  	case WM_LBUTTONDOWN:
  	case WM_MOUSEMOVE:
          case WM_MOUSELEAVE:
  	    if(UPDOWN_IsEnabled(infoPtr))
  		UPDOWN_HandleMouseEvent (infoPtr, message, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
  	    break;
  
          case WM_MOUSEWHEEL:
              UPDOWN_MouseWheel(infoPtr, wParam);
              break;
  
  	case WM_KEYDOWN:
  	    if((infoPtr->dwStyle & UDS_ARROWKEYS) && UPDOWN_IsEnabled(infoPtr))
  		return UPDOWN_KeyPressed(infoPtr, (int)wParam);
  	    break;
  
  	case WM_PRINTCLIENT:
  	case WM_PAINT:
  	    return UPDOWN_Paint (infoPtr, (HDC)wParam);
  
  	case UDM_GETACCEL:
  	    if (wParam==0 && lParam==0) return infoPtr->AccelCount;
  	    if (wParam && lParam) {
  		int temp = min(infoPtr->AccelCount, wParam);
  	        memcpy((void *)lParam, infoPtr->AccelVect, temp*sizeof(UDACCEL));
  	        return temp;
        	    }
  	    return 0;
  
  	case UDM_SETACCEL:
  	{
  	    TRACE("UDM_SETACCEL\n");
  
  	    if(infoPtr->AccelVect) {
  		heap_free (infoPtr->AccelVect);
  		infoPtr->AccelCount = 0;
  		infoPtr->AccelVect  = 0;
        	    }
  	    if(wParam==0) return TRUE;
  	    infoPtr->AccelVect = heap_alloc(wParam*sizeof(UDACCEL));
  	    if(!infoPtr->AccelVect) return FALSE;
  	    memcpy(infoPtr->AccelVect, (void*)lParam, wParam*sizeof(UDACCEL));
              infoPtr->AccelCount = wParam;
  
              if (TRACE_ON(updown))
              {
                  UINT i;
  
                  for (i = 0; i < wParam; i++)
                      TRACE("%u: nSec %u nInc %u\n", i,
                          infoPtr->AccelVect[i].nSec, infoPtr->AccelVect[i].nInc);
              }
  
      	    return TRUE;
  	}
  	case UDM_GETBASE:
  	    return infoPtr->Base;
  
  	case UDM_SETBASE:
  	    TRACE("UpDown Ctrl new base(%ld), hwnd=%p\n", wParam, hwnd);
  	    if (wParam==10 || wParam==16) {
  		WPARAM old_base = infoPtr->Base;
  		infoPtr->Base = wParam;
  
  		if (old_base != infoPtr->Base)
  		    UPDOWN_SetBuddyInt(infoPtr);
  
  		return old_base;
  	    }
  	    break;
  
  	case UDM_GETBUDDY:
  	    return (LRESULT)infoPtr->Buddy;
  
  	case UDM_SETBUDDY:
  	    return (LRESULT)UPDOWN_SetBuddy (infoPtr, (HWND)wParam);
  
  	case UDM_GETPOS:
  	{
              BOOL err;
              int pos;
  
              pos = UPDOWN_GetPos(infoPtr, &err);
              return MAKELONG(pos, err);
  	}
  	case UDM_SETPOS:
  	{
              return UPDOWN_SetPos(infoPtr, (short)LOWORD(lParam));
  	}
  	case UDM_GETRANGE:
  	    return MAKELONG(infoPtr->MaxVal, infoPtr->MinVal);
  
  	case UDM_SETRANGE:
  	    /* we must have:
  	    UD_MINVAL <= Max <= UD_MAXVAL
  	    UD_MINVAL <= Min <= UD_MAXVAL
  	    |Max-Min| <= UD_MAXVAL */
  	    UPDOWN_SetRange(infoPtr, (short)lParam, (short)HIWORD(lParam));
  	    break;
  
  	case UDM_GETRANGE32:
  	    if (wParam) *(LPINT)wParam = infoPtr->MinVal;
  	    if (lParam) *(LPINT)lParam = infoPtr->MaxVal;
  	    break;
  
  	case UDM_SETRANGE32:
  	    UPDOWN_SetRange(infoPtr, (INT)lParam, (INT)wParam);
  	    break;
  
  	case UDM_GETPOS32:
  	{
              return UPDOWN_GetPos(infoPtr, (BOOL*)lParam);
  	}
  	case UDM_SETPOS32:
  	{
              return UPDOWN_SetPos(infoPtr, (int)lParam);
  	}
  	case UDM_GETUNICODEFORMAT:
  	    /* we lie a bit here, we're always using Unicode internally */
  	    return infoPtr->UnicodeFormat;
  
  	case UDM_SETUNICODEFORMAT:
  	{
  	    /* do we really need to honour this flag? */
  	    int temp = infoPtr->UnicodeFormat;
  	    infoPtr->UnicodeFormat = (BOOL)wParam;
  	    return temp;
  	}
  	default:
  	    if ((message >= WM_USER) && (message < WM_APP) && !COMCTL32_IsReflectedMessage(message))
  		ERR("unknown msg %04x wp=%04lx lp=%08lx\n", message, wParam, lParam);
  	    return DefWindowProcW (hwnd, message, wParam, lParam);
      }
  
      return 0;
  }
  
  /***********************************************************************
   *		UPDOWN_Register	[Internal]
   *
   * Registers the updown window class.
   */
  void UPDOWN_Register(void)
  {
      WNDCLASSW wndClass;
  
      ZeroMemory( &wndClass, sizeof( WNDCLASSW ) );
      wndClass.style         = CS_GLOBALCLASS | CS_VREDRAW | CS_HREDRAW;
      wndClass.lpfnWndProc   = UpDownWindowProc;
      wndClass.cbClsExtra    = 0;
      wndClass.cbWndExtra    = sizeof(UPDOWN_INFO*);
      wndClass.hCursor       = LoadCursorW( 0, (LPWSTR)IDC_ARROW );
      wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
      wndClass.lpszClassName = UPDOWN_CLASSW;
  
      RegisterClassW( &wndClass );
  }
  
  
  /***********************************************************************
   *		UPDOWN_Unregister	[Internal]
   *
   * Unregisters the updown window class.
   */
  void UPDOWN_Unregister (void)
  {
      UnregisterClassW (UPDOWN_CLASSW, NULL);
  }
  