dlls/comctl32/updown.c

   1 /*
   2  * Updown control
   3  *
   4  * Copyright 1997, 2002 Dimitrie O. Paun
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  *
  20  * NOTE
  21  *
  22  * This code was audited for completeness against the documented features
  23  * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
  24  *
  25  * Unless otherwise noted, we believe this code to be complete, as per
  26  * the specification mentioned above.
  27  * If you discover missing features, or bugs, please note them below.
  28  *
  29  */
  30
  31 #include <stdlib.h>
  32 #include <string.h>
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35
  36 #include "windef.h"
  37 #include "winbase.h"
  38 #include "wingdi.h"
  39 #include "winuser.h"
  40 #include "winnls.h"
  41 #include "commctrl.h"
  42 #include "comctl32.h"
  43 #include "wine/unicode.h"
  44 #include "wine/debug.h"
  45
  46 WINE_DEFAULT_DEBUG_CHANNEL(updown);
  47
  48 typedef struct
  49 {
  50     HWND      Self;            /* Handle to this up-down control */
  51     HWND      Notify;          /* Handle to the parent window */
  52     UINT      AccelCount;      /* Number of elements in AccelVect */
  53     UDACCEL*  AccelVect;       /* Vector containing AccelCount elements */
  54     INT       AccelIndex;      /* Current accel index, -1 if not accel'ing */
  55     INT       Base;            /* Base to display nr in the buddy window */
  56     INT       CurVal;          /* Current up-down value */
  57     INT       MinVal;          /* Minimum up-down value */
  58     INT       MaxVal;          /* Maximum up-down value */
  59     HWND      Buddy;           /* Handle to the buddy window */
  60     INT       BuddyType;       /* Remembers the buddy type BUDDY_TYPE_* */
  61     INT       Flags;           /* Internal Flags FLAG_* */
  62     BOOL      UnicodeFormat;   /* Marks the use of Unicode internally */
  63 } UPDOWN_INFO;
  64
  65 /* Control configuration constants */
  66
  67 #define INITIAL_DELAY   500    /* initial timer until auto-inc kicks in */
  68 #define AUTOPRESS_DELAY 250    /* time to keep arrow pressed on KEY_DOWN */
  69 #define REPEAT_DELAY    50     /* delay between auto-increments */
  70
  71 #define DEFAULT_WIDTH       14 /* default width of the ctrl */
  72 #define DEFAULT_XSEP         0 /* default separation between buddy and ctrl */
  73 #define DEFAULT_ADDTOP       0 /* amount to extend above the buddy window */
  74 #define DEFAULT_ADDBOT       0 /* amount to extend below the buddy window */
  75 #define DEFAULT_BUDDYBORDER  2 /* Width/height of the buddy border */
  76 #define DEFAULT_BUDDYSPACER  2 /* Spacer between the buddy and the ctrl */
  77
  78
  79 /* Work constants */
  80
  81 #define FLAG_INCR       0x01
  82 #define FLAG_DECR       0x02
  83 #define FLAG_MOUSEIN    0x04
  84 #define FLAG_PRESSED    0x08
  85 #define FLAG_ARROW      (FLAG_INCR | FLAG_DECR)
  86
  87 #define BUDDY_TYPE_UNKNOWN 0
  88 #define BUDDY_TYPE_LISTBOX 1
  89 #define BUDDY_TYPE_EDIT    2
  90
  91 #define TIMER_AUTOREPEAT   1
  92 #define TIMER_ACCEL        2
  93 #define TIMER_AUTOPRESS    3
  94
  95 #define BUDDY_UPDOWN_HWND        "buddyUpDownHWND"
  96 #define BUDDY_SUPERCLASS_WNDPROC "buddySupperClassWndProc"
  97
  98 #define UPDOWN_GetInfoPtr(hwnd) ((UPDOWN_INFO *)GetWindowLongA (hwnd,0))
  99 #define COUNT_OF(a) (sizeof(a)/sizeof(a[0]))
 100
 101 static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action);
 102
 103 /***********************************************************************
 104  *           UPDOWN_IsBuddyEdit
 105  * Tests if our buddy is an edit control.
 106  */
 107 static inline BOOL UPDOWN_IsBuddyEdit(UPDOWN_INFO *infoPtr)
 108 {
 109     return infoPtr->BuddyType == BUDDY_TYPE_EDIT;
 110 }
 111
 112 /***********************************************************************
 113  *           UPDOWN_IsBuddyListbox
 114  * Tests if our buddy is a listbox control.
 115  */
 116 static inline BOOL UPDOWN_IsBuddyListbox(UPDOWN_INFO *infoPtr)
 117 {
 118     return infoPtr->BuddyType == BUDDY_TYPE_LISTBOX;
 119 }
 120
 121 /***********************************************************************
 122  *           UPDOWN_InBounds
 123  * Tests if a given value 'val' is between the Min&Max limits
 124  */
 125 static BOOL UPDOWN_InBounds(UPDOWN_INFO *infoPtr, int val)
 126 {
 127     if(infoPtr->MaxVal > infoPtr->MinVal)
 128         return (infoPtr->MinVal <= val) && (val <= infoPtr->MaxVal);
 129     else
 130         return (infoPtr->MaxVal <= val) && (val <= infoPtr->MinVal);
 131 }
 132
 133 /***********************************************************************
 134  *           UPDOWN_OffsetVal
 135  * Change the current value by delta.
 136  * It returns TRUE is the value was changed successfuly, or FALSE
 137  * if the value was not changed, as it would go out of bounds.
 138  */
 139 static BOOL UPDOWN_OffsetVal(UPDOWN_INFO *infoPtr, int delta)
 140 {
 141     /* check if we can do the modification first */
 142     if(!UPDOWN_InBounds (infoPtr, infoPtr->CurVal+delta)) {
 143         if (GetWindowLongW (infoPtr->Self, GWL_STYLE) & UDS_WRAP) {
 144             delta += (delta < 0 ? -1 : 1) *
 145                      (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1) *
 146                      (infoPtr->MinVal - infoPtr->MaxVal) +
 147                      (delta < 0 ? 1 : -1);
 148         } else return FALSE;
 149     }
 150
 151     infoPtr->CurVal += delta;
 152     return TRUE;
 153 }
 154
 155 /***********************************************************************
 156  * UPDOWN_HasBuddyBorder
 157  *
 158  * When we have a buddy set and that we are aligned on our buddy, we
 159  * want to draw a sunken edge to make like we are part of that control.
 160  */
 161 static BOOL UPDOWN_HasBuddyBorder(UPDOWN_INFO* infoPtr)
 162 {
 163     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 164
 165     return  ( ((dwStyle & (UDS_ALIGNLEFT | UDS_ALIGNRIGHT)) != 0) &&
 166               UPDOWN_IsBuddyEdit(infoPtr) );
 167 }
 168
 169 /***********************************************************************
 170  *           UPDOWN_GetArrowRect
 171  * wndPtr   - pointer to the up-down wnd
 172  * rect     - will hold the rectangle
 173  * arrow    - FLAG_INCR to get the "increment" rect (up or right)
 174  *            FLAG_DECR to get the "decrement" rect (down or left)
 175  *            If both flags are pressent, the envelope is returned.
 176  */
 177 static void UPDOWN_GetArrowRect (UPDOWN_INFO* infoPtr, RECT *rect, int arrow)
 178 {
 179     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 180
 181     GetClientRect (infoPtr->Self, rect);
 182
 183     /*
 184      * Make sure we calculate the rectangle to fit even if we draw the
 185      * border.
 186      */
 187     if (UPDOWN_HasBuddyBorder(infoPtr)) {
 188         if (dwStyle & UDS_ALIGNLEFT)
 189             rect->left += DEFAULT_BUDDYBORDER;
 190         else
 191             rect->right -= DEFAULT_BUDDYBORDER;
 192
 193         InflateRect(rect, 0, -DEFAULT_BUDDYBORDER);
 194     }
 195
 196     /* now figure out if we need a space away from the buddy */
 197     if ( IsWindow(infoPtr->Buddy) ) {
 198         if (dwStyle & UDS_ALIGNLEFT) rect->right -= DEFAULT_BUDDYSPACER;
 199         else rect->left += DEFAULT_BUDDYSPACER;
 200     }
 201
 202     /*
 203      * We're calculating the midpoint to figure-out where the
 204      * separation between the buttons will lay. We make sure that we
 205      * round the uneven numbers by adding 1.
 206      */
 207     if (dwStyle & UDS_HORZ) {
 208         int len = rect->right - rect->left + 1; /* compute the width */
 209         if (arrow & FLAG_INCR)
 210             rect->left = rect->left + len/2;
 211         if (arrow & FLAG_DECR)
 212             rect->right =  rect->left + len/2 - 1;
 213     } else {
 214         int len = rect->bottom - rect->top + 1; /* compute the height */
 215         if (arrow & FLAG_INCR)
 216             rect->bottom =  rect->top + len/2 - 1;
 217         if (arrow & FLAG_DECR)
 218             rect->top =  rect->top + len/2;
 219     }
 220 }
 221
 222 /***********************************************************************
 223  *           UPDOWN_GetArrowFromPoint
 224  * Returns the rectagle (for the up or down arrow) that contains pt.
 225  * If it returns the up rect, it returns TRUE.
 226  * If it returns the down rect, it returns FALSE.
 227  */
 228 static BOOL UPDOWN_GetArrowFromPoint (UPDOWN_INFO* infoPtr, RECT *rect, POINT pt)
 229 {
 230     UPDOWN_GetArrowRect (infoPtr, rect, FLAG_INCR);
 231     if(PtInRect(rect, pt)) return FLAG_INCR;
 232
 233     UPDOWN_GetArrowRect (infoPtr, rect, FLAG_DECR);
 234     if(PtInRect(rect, pt)) return FLAG_DECR;
 235
 236     return 0;
 237 }
 238
 239
 240 /***********************************************************************
 241  *           UPDOWN_GetThousandSep
 242  * Returns the thousand sep. If an error occurs, it returns ','.
 243  */
 244 static WCHAR UPDOWN_GetThousandSep()
 245 {
 246     WCHAR sep[2];
 247
 248     if(GetLocaleInfoW(LOCALE_USER_DEFAULT, LOCALE_STHOUSAND, sep, 2) != 1)
 249         sep[0] = ',';
 250
 251     return sep[0];
 252 }
 253
 254 /***********************************************************************
 255  *           UPDOWN_GetBuddyInt
 256  * Tries to read the pos from the buddy window and if it succeeds,
 257  * it stores it in the control's CurVal
 258  * returns:
 259  *   TRUE  - if it read the integer from the buddy successfully
 260  *   FALSE - if an error occurred
 261  */
 262 static BOOL UPDOWN_GetBuddyInt (UPDOWN_INFO *infoPtr)
 263 {
 264     WCHAR txt[20], sep, *src, *dst;
 265     int newVal;
 266
 267     if (!IsWindow(infoPtr->Buddy))
 268         return FALSE;
 269
 270     /*if the buddy is a list window, we must set curr index */
 271     if (UPDOWN_IsBuddyListbox(infoPtr)) {
 272         newVal = SendMessageW(infoPtr->Buddy, LB_GETCARETINDEX, 0, 0);
 273         if(newVal < 0) return FALSE;
 274     } else {
 275         /* we have a regular window, so will get the text */
 276         if (!GetWindowTextW(infoPtr->Buddy, txt, COUNT_OF(txt))) return FALSE;
 277
 278         sep = UPDOWN_GetThousandSep();
 279
 280         /* now get rid of the separators */
 281         for(src = dst = txt; *src; src++)
 282             if(*src != sep) *dst++ = *src;
 283         *dst = 0;
 284
 285         /* try to convert the number and validate it */
 286         newVal = strtolW(txt, &src, infoPtr->Base);
 287         if(*src || !UPDOWN_InBounds (infoPtr, newVal)) return FALSE;
 288     }
 289
 290     TRACE("new value(%d) from buddy (old=%d)\n", newVal, infoPtr->CurVal);
 291     infoPtr->CurVal = newVal;
 292     return TRUE;
 293 }
 294
 295
 296 /***********************************************************************
 297  *           UPDOWN_SetBuddyInt
 298  * Tries to set the pos to the buddy window based on current pos
 299  * returns:
 300  *   TRUE  - if it set the caption of the  buddy successfully
 301  *   FALSE - if an error occurred
 302  */
 303 static BOOL UPDOWN_SetBuddyInt (UPDOWN_INFO *infoPtr)
 304 {
 305     WCHAR fmt[3] = { '%', 'd', '\0' };
 306     WCHAR txt[20];
 307     int len;
 308
 309     if (!IsWindow(infoPtr->Buddy)) return FALSE;
 310
 311     TRACE("set new value(%d) to buddy.\n", infoPtr->CurVal);
 312
 313     /*if the buddy is a list window, we must set curr index */
 314     if (UPDOWN_IsBuddyListbox(infoPtr)) {
 315         return SendMessageW(infoPtr->Buddy, LB_SETCURSEL, infoPtr->CurVal, 0) != LB_ERR;
 316     }
 317
 318     /* Regular window, so set caption to the number */
 319     if (infoPtr->Base == 16) fmt[1] = 'X';
 320     len = wsprintfW(txt, fmt, infoPtr->CurVal);
 321
 322
 323     /* Do thousands separation if necessary */
 324     if (!(GetWindowLongW (infoPtr->Self, GWL_STYLE) & UDS_NOTHOUSANDS) && (len > 3)) {
 325         WCHAR tmp[COUNT_OF(txt)], *src = tmp, *dst = txt;
 326         WCHAR sep = UPDOWN_GetThousandSep();
 327         int start = len % 3;
 328
 329         memcpy(tmp, txt, sizeof(txt));
 330         if (start == 0) start = 3;
 331         dst += start;
 332         src += start;
 333         for (len=0; *src; len++) {
 334             if (len % 3 == 0) *dst++ = sep;
 335             *dst++ = *src++;
 336         }
 337         *dst = 0;
 338     }
 339
 340     return SetWindowTextW(infoPtr->Buddy, txt);
 341 }
 342
 343 /***********************************************************************
 344  * UPDOWN_Draw
 345  *
 346  * Draw the arrows. The background need not be erased.
 347  */
 348 static LRESULT UPDOWN_Draw (UPDOWN_INFO *infoPtr, HDC hdc)
 349 {
 350     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 351     BOOL pressed, hot;
 352     RECT rect;
 353
 354     /* Draw the common border between ourselves and our buddy */
 355     if (UPDOWN_HasBuddyBorder(infoPtr)) {
 356         GetClientRect(infoPtr->Self, &rect);
 357         DrawEdge(hdc, &rect, EDGE_SUNKEN,
 358                  BF_BOTTOM | BF_TOP |
 359                  (dwStyle & UDS_ALIGNLEFT ? BF_LEFT : BF_RIGHT));
 360     }
 361
 362     /* Draw the incr button */
 363     UPDOWN_GetArrowRect (infoPtr, &rect, FLAG_INCR);
 364     pressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_INCR);
 365     hot = (infoPtr->Flags & FLAG_INCR) && (infoPtr->Flags & FLAG_MOUSEIN);
 366     DrawFrameControl(hdc, &rect, DFC_SCROLL,
 367         (dwStyle & UDS_HORZ ? DFCS_SCROLLRIGHT : DFCS_SCROLLUP) |
 368         ((dwStyle & UDS_HOTTRACK) && hot ? DFCS_HOT : 0) |
 369         (pressed ? DFCS_PUSHED : 0) |
 370         (dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
 371
 372     /* Draw the decr button */
 373     UPDOWN_GetArrowRect(infoPtr, &rect, FLAG_DECR);
 374     pressed = (infoPtr->Flags & FLAG_PRESSED) && (infoPtr->Flags & FLAG_DECR);
 375     hot = (infoPtr->Flags & FLAG_DECR) && (infoPtr->Flags & FLAG_MOUSEIN);
 376     DrawFrameControl(hdc, &rect, DFC_SCROLL,
 377         (dwStyle & UDS_HORZ ? DFCS_SCROLLLEFT : DFCS_SCROLLDOWN) |
 378         ((dwStyle & UDS_HOTTRACK) && hot ? DFCS_HOT : 0) |
 379         (pressed ? DFCS_PUSHED : 0) |
 380         (dwStyle & WS_DISABLED ? DFCS_INACTIVE : 0) );
 381
 382     return 0;
 383 }
 384
 385 /***********************************************************************
 386  * UPDOWN_Paint
 387  *
 388  * Asynchronous drawing (must ONLY be used in WM_PAINT).
 389  * Calls UPDOWN_Draw.
 390  */
 391 static LRESULT UPDOWN_Paint (UPDOWN_INFO *infoPtr, HDC hdc)
 392 {
 393     PAINTSTRUCT ps;
 394     if (hdc) return UPDOWN_Draw (infoPtr, hdc);
 395     hdc = BeginPaint (infoPtr->Self, &ps);
 396     UPDOWN_Draw (infoPtr, hdc);
 397     EndPaint (infoPtr->Self, &ps);
 398     return 0;
 399 }
 400
 401 /***********************************************************************
 402  * UPDOWN_KeyPressed
 403  *
 404  * Handle key presses (up & down) when we have to do so
 405  */
 406 static LRESULT UPDOWN_KeyPressed(UPDOWN_INFO *infoPtr, int key)
 407 {
 408     int arrow;
 409
 410     if (key == VK_UP) arrow = FLAG_INCR;
 411     else if (key == VK_DOWN) arrow = FLAG_DECR;
 412     else return 1;
 413
 414     UPDOWN_GetBuddyInt (infoPtr);
 415     infoPtr->Flags &= ~FLAG_ARROW;
 416     infoPtr->Flags |= FLAG_PRESSED | arrow;
 417     InvalidateRect (infoPtr->Self, NULL, FALSE);
 418     SetTimer(infoPtr->Self, TIMER_AUTOPRESS, AUTOPRESS_DELAY, 0);
 419     UPDOWN_DoAction (infoPtr, 1, arrow);
 420     return 0;
 421 }
 422
 423 /***********************************************************************
 424  * UPDOWN_Buddy_SubclassProc used to handle messages sent to the buddy
 425  *                           control.
 426  */
 427 static LRESULT CALLBACK
 428 UPDOWN_Buddy_SubclassProc(HWND  hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 429 {
 430     WNDPROC superClassWndProc = (WNDPROC)GetPropA(hwnd, BUDDY_SUPERCLASS_WNDPROC);
 431     TRACE("hwnd=%p, wndProc=%d, uMsg=%04x, wParam=%d, lParam=%d\n",
 432           hwnd, (INT)superClassWndProc, uMsg, wParam, (UINT)lParam);
 433
 434     if (uMsg == WM_KEYDOWN) {
 435         HWND upDownHwnd = GetPropA(hwnd, BUDDY_UPDOWN_HWND);
 436
 437         UPDOWN_KeyPressed(UPDOWN_GetInfoPtr(upDownHwnd), (int)wParam);
 438     }
 439
 440     return CallWindowProcW( superClassWndProc, hwnd, uMsg, wParam, lParam);
 441 }
 442
 443 /***********************************************************************
 444  *           UPDOWN_SetBuddy
 445  * Tests if 'bud' is a valid window handle. If not, returns FALSE.
 446  * Else, sets it as a new Buddy.
 447  * Then, it should subclass the buddy
 448  * If window has the UDS_ARROWKEYS, it subcalsses the buddy window to
 449  * process the UP/DOWN arrow keys.
 450  * If window has the UDS_ALIGNLEFT or UDS_ALIGNRIGHT style
 451  * the size/pos of the buddy and the control are adjusted accordingly.
 452  */
 453 static BOOL UPDOWN_SetBuddy (UPDOWN_INFO* infoPtr, HWND bud)
 454 {
 455     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 456     RECT  budRect;  /* new coord for the buddy */
 457     int   x, width;  /* new x position and width for the up-down */
 458     WNDPROC baseWndProc;
 459     CHAR buddyClass[40];
 460
 461     /* Is it a valid bud? */
 462     if(!IsWindow(bud)) return FALSE;
 463
 464     TRACE("(hwnd=%p, bud=%p)\n", infoPtr->Self, bud);
 465
 466     /* there is already a body assigned */
 467     if (infoPtr->Buddy)  RemovePropA(infoPtr->Buddy, BUDDY_UPDOWN_HWND);
 468
 469     /* Store buddy window handle */
 470     infoPtr->Buddy = bud;
 471
 472     /* keep upDown ctrl hwnd in a buddy property */
 473     SetPropA( bud, BUDDY_UPDOWN_HWND, infoPtr->Self);
 474
 475     /* Store buddy window class type */
 476     infoPtr->BuddyType = BUDDY_TYPE_UNKNOWN;
 477     if (GetClassNameA(bud, buddyClass, COUNT_OF(buddyClass))) {
 478         if (lstrcmpiA(buddyClass, "Edit") == 0)
 479             infoPtr->BuddyType = BUDDY_TYPE_EDIT;
 480         else if (lstrcmpiA(buddyClass, "Listbox") == 0)
 481             infoPtr->BuddyType = BUDDY_TYPE_LISTBOX;
 482     }
 483
 484     if(dwStyle & UDS_ARROWKEYS){
 485         /* Note that I don't clear the BUDDY_SUPERCLASS_WNDPROC property
 486            when we reset the upDown ctrl buddy to another buddy because it is not
 487            good to break the window proc chain. */
 488         if (!GetPropA(bud, BUDDY_SUPERCLASS_WNDPROC)) {
 489             baseWndProc = (WNDPROC)SetWindowLongW(bud, GWL_WNDPROC, (LPARAM)UPDOWN_Buddy_SubclassProc);
 490             SetPropA(bud, BUDDY_SUPERCLASS_WNDPROC, (HANDLE)baseWndProc);
 491         }
 492     }
 493
 494     /* Get the rect of the buddy relative to its parent */
 495     GetWindowRect(infoPtr->Buddy, &budRect);
 496     MapWindowPoints(HWND_DESKTOP, GetParent(infoPtr->Buddy), (POINT *)(&budRect.left), 2);
 497
 498     /* now do the positioning */
 499     if  (dwStyle & UDS_ALIGNLEFT) {
 500         x  = budRect.left;
 501         budRect.left += DEFAULT_WIDTH + DEFAULT_XSEP;
 502     } else if (dwStyle & UDS_ALIGNRIGHT) {
 503         budRect.right -= DEFAULT_WIDTH + DEFAULT_XSEP;
 504         x  = budRect.right+DEFAULT_XSEP;
 505     } else {
 506         x  = budRect.right+DEFAULT_XSEP;
 507     }
 508
 509     /* first adjust the buddy to accomodate the up/down */
 510     SetWindowPos(infoPtr->Buddy, 0, budRect.left, budRect.top,
 511                  budRect.right  - budRect.left, budRect.bottom - budRect.top,
 512                  SWP_NOACTIVATE|SWP_NOZORDER);
 513
 514     /* now position the up/down */
 515     /* Since the UDS_ALIGN* flags were used, */
 516     /* we will pick the position and size of the window. */
 517     width = DEFAULT_WIDTH;
 518
 519     /*
 520      * If the updown has a buddy border, it has to overlap with the buddy
 521      * to look as if it is integrated with the buddy control.
 522      * We nudge the control or change it size to overlap.
 523      */
 524     if (UPDOWN_HasBuddyBorder(infoPtr)) {
 525         if(dwStyle & UDS_ALIGNLEFT)
 526             width += DEFAULT_BUDDYBORDER;
 527         else
 528             x -= DEFAULT_BUDDYBORDER;
 529     }
 530
 531     SetWindowPos(infoPtr->Self, infoPtr->Buddy, x,
 532                  budRect.top - DEFAULT_ADDTOP, width,
 533                  budRect.bottom - budRect.top + DEFAULT_ADDTOP + DEFAULT_ADDBOT,
 534                  SWP_NOACTIVATE);
 535
 536     return TRUE;
 537 }
 538
 539 /***********************************************************************
 540  *           UPDOWN_DoAction
 541  *
 542  * This function increments/decrements the CurVal by the
 543  * 'delta' amount according to the 'action' flag which can be a
 544  * combination of FLAG_INCR and FLAG_DECR
 545  * It notifies the parent as required.
 546  * It handles wraping and non-wraping correctly.
 547  * It is assumed that delta>0
 548  */
 549 static void UPDOWN_DoAction (UPDOWN_INFO *infoPtr, int delta, int action)
 550 {
 551     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 552     NM_UPDOWN ni;
 553
 554     TRACE("%d by %d\n", action, delta);
 555
 556     /* check if we can do the modification first */
 557     delta *= (action & FLAG_INCR ? 1 : -1) * (infoPtr->MaxVal < infoPtr->MinVal ? -1 : 1);
 558     if ( (action & FLAG_INCR) && (action & FLAG_DECR) ) delta = 0;
 559
 560     /* We must notify parent now to obtain permission */
 561     ni.iPos = infoPtr->CurVal;
 562     ni.iDelta = delta;
 563     ni.hdr.hwndFrom = infoPtr->Self;
 564     ni.hdr.idFrom   = GetWindowLongW (infoPtr->Self, GWL_ID);
 565     ni.hdr.code = UDN_DELTAPOS;
 566     if (!SendMessageW(infoPtr->Notify, WM_NOTIFY, (WPARAM)ni.hdr.idFrom, (LPARAM)&ni)) {
 567         /* Parent said: OK to adjust */
 568
 569         /* Now adjust value with (maybe new) delta */
 570         if (UPDOWN_OffsetVal (infoPtr, ni.iDelta)) {
 571             /* Now take care about our buddy */
 572             if (dwStyle & UDS_SETBUDDYINT) UPDOWN_SetBuddyInt (infoPtr);
 573         }
 574     }
 575
 576     /* Also, notify it. This message is sent in any case. */
 577     SendMessageW( infoPtr->Notify, dwStyle & UDS_HORZ ? WM_HSCROLL : WM_VSCROLL,
 578                   MAKELONG(SB_THUMBPOSITION, infoPtr->CurVal), (LPARAM)infoPtr->Self);
 579 }
 580
 581 /***********************************************************************
 582  *           UPDOWN_IsEnabled
 583  *
 584  * Returns TRUE if it is enabled as well as its buddy (if any)
 585  *         FALSE otherwise
 586  */
 587 static BOOL UPDOWN_IsEnabled (UPDOWN_INFO *infoPtr)
 588 {
 589     if(GetWindowLongW (infoPtr->Self, GWL_STYLE) & WS_DISABLED)
 590         return FALSE;
 591     if(infoPtr->Buddy)
 592         return IsWindowEnabled(infoPtr->Buddy);
 593     return TRUE;
 594 }
 595
 596 /***********************************************************************
 597  *           UPDOWN_CancelMode
 598  *
 599  * Deletes any timers, releases the mouse and does  redraw if necessary.
 600  * If the control is not in "capture" mode, it does nothing.
 601  * If the control was not in cancel mode, it returns FALSE.
 602  * If the control was in cancel mode, it returns TRUE.
 603  */
 604 static BOOL UPDOWN_CancelMode (UPDOWN_INFO *infoPtr)
 605 {
 606     if (!(infoPtr->Flags & FLAG_PRESSED)) return FALSE;
 607
 608     KillTimer (infoPtr->Self, TIMER_AUTOREPEAT);
 609     KillTimer (infoPtr->Self, TIMER_ACCEL);
 610     KillTimer (infoPtr->Self, TIMER_AUTOPRESS);
 611
 612     if (GetCapture() == infoPtr->Self) {
 613         NMHDR hdr;
 614         hdr.hwndFrom = infoPtr->Self;
 615         hdr.idFrom   = GetWindowLongW (infoPtr->Self, GWL_ID);
 616         hdr.code = NM_RELEASEDCAPTURE;
 617         SendMessageW(infoPtr->Notify, WM_NOTIFY, hdr.idFrom, (LPARAM)&hdr);
 618         ReleaseCapture();
 619     }
 620
 621     infoPtr->Flags &= ~FLAG_PRESSED;
 622     InvalidateRect (infoPtr->Self, NULL, FALSE);
 623
 624     return TRUE;
 625 }
 626
 627 /***********************************************************************
 628  *           UPDOWN_HandleMouseEvent
 629  *
 630  * Handle a mouse event for the updown.
 631  * 'pt' is the location of the mouse event in client or
 632  * windows coordinates.
 633  */
 634 static void UPDOWN_HandleMouseEvent (UPDOWN_INFO *infoPtr, UINT msg, POINTS pts)
 635 {
 636     DWORD dwStyle = GetWindowLongW (infoPtr->Self, GWL_STYLE);
 637     POINT pt = { pts.x, pts.y };
 638     RECT rect;
 639     int temp, arrow;
 640
 641     switch(msg)
 642     {
 643         case WM_LBUTTONDOWN:  /* Initialise mouse tracking */
 644             /* If we are inside an arrow, then nothing to do */
 645             if(!(infoPtr->Flags & FLAG_MOUSEIN)) return;
 646
 647             /* If the buddy is an edit, will set focus to it */
 648             if (UPDOWN_IsBuddyEdit(infoPtr)) SetFocus(infoPtr->Buddy);
 649
 650             /* Now see which one is the 'active' arrow */
 651             if (infoPtr->Flags & FLAG_ARROW) {
 652
 653                 /* Update the CurVal if necessary */
 654                 if (dwStyle & UDS_SETBUDDYINT) UPDOWN_GetBuddyInt (infoPtr);
 655
 656                 /* Set up the correct flags */
 657                 infoPtr->Flags |= FLAG_PRESSED;
 658
 659                 /* repaint the control */
 660                 InvalidateRect (infoPtr->Self, NULL, FALSE);
 661
 662                 /* process the click */
 663                 UPDOWN_DoAction (infoPtr, 1, infoPtr->Flags & FLAG_ARROW);
 664
 665                 /* now capture all mouse messages */
 666                 SetCapture (infoPtr->Self);
 667
 668                 /* and startup the first timer */
 669                 SetTimer(infoPtr->Self, TIMER_AUTOREPEAT, INITIAL_DELAY, 0);
 670             }
 671             break;
 672
 673         case WM_MOUSEMOVE:
 674             /* save the flags to see if any got modified */
 675             temp = infoPtr->Flags;
 676
 677             /* Now see which one is the 'active' arrow */
 678             arrow = UPDOWN_GetArrowFromPoint (infoPtr, &rect, pt);
 679
 680             /* Update the flags if we are in/out */
 681             infoPtr->Flags &= ~(FLAG_MOUSEIN | FLAG_ARROW);
 682             if(arrow) {
 683                 infoPtr->Flags |=  FLAG_MOUSEIN | arrow;
 684             } else {
 685                 if(infoPtr->AccelIndex != -1) infoPtr->AccelIndex = 0;
 686             }
 687
 688             /* If state changed, redraw the control */
 689             if(temp != infoPtr->Flags)
 690                  InvalidateRect (infoPtr->Self, &rect, FALSE);
 691             break;
 692
 693         default:
 694             ERR("Impossible case (msg=%x)!\n", msg);
 695     }
 696
 697 }
 698
 699 /***********************************************************************
 700  *           UpDownWndProc
 701  */
 702 static LRESULT WINAPI UpDownWindowProc(HWND hwnd, UINT message, WPARAM wParam,
 703                                 LPARAM lParam)
 704 {
 705     UPDOWN_INFO *infoPtr = UPDOWN_GetInfoPtr (hwnd);
 706     DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
 707     int temp;
 708
 709     if (!infoPtr && (message != WM_CREATE))
 710         return DefWindowProcW (hwnd, message, wParam, lParam);
 711
 712     switch(message)
 713     {
 714         case WM_CREATE:
 715             SetWindowLongW (hwnd, GWL_STYLE, dwStyle & ~WS_BORDER);
 716             infoPtr = (UPDOWN_INFO*)Alloc (sizeof(UPDOWN_INFO));
 717             SetWindowLongW (hwnd, 0, (DWORD)infoPtr);
 718
 719             /* initialize the info struct */
 720             infoPtr->Self = hwnd;
 721             infoPtr->Notify = ((LPCREATESTRUCTA)lParam)->hwndParent;
 722             infoPtr->AccelCount = 0;
 723             infoPtr->AccelVect = 0;
 724             infoPtr->AccelIndex = -1;
 725             infoPtr->CurVal = 0;
 726             infoPtr->MinVal = 100;
 727             infoPtr->MaxVal = 0;
 728             infoPtr->Base  = 10; /* Default to base 10  */
 729             infoPtr->Buddy = 0;  /* No buddy window yet */
 730             infoPtr->Flags = 0;  /* And no flags        */
 731
 732             /* Do we pick the buddy win ourselves? */
 733             if (dwStyle & UDS_AUTOBUDDY)
 734                 UPDOWN_SetBuddy (infoPtr, GetWindow (hwnd, GW_HWNDPREV));
 735
 736             TRACE("UpDown Ctrl creation, hwnd=%p\n", hwnd);
 737             break;
 738
 739         case WM_DESTROY:
 740             if(infoPtr->AccelVect) Free (infoPtr->AccelVect);
 741
 742             if(infoPtr->Buddy) RemovePropA(infoPtr->Buddy, BUDDY_UPDOWN_HWND);
 743
 744             Free (infoPtr);
 745             SetWindowLongW (hwnd, 0, 0);
 746             TRACE("UpDown Ctrl destruction, hwnd=%p\n", hwnd);
 747             break;
 748
 749         case WM_ENABLE:
 750             if (dwStyle & WS_DISABLED) UPDOWN_CancelMode (infoPtr);
 751             InvalidateRect (infoPtr->Self, NULL, FALSE);
 752             break;
 753
 754         case WM_TIMER:
 755            /* is this the auto-press timer? */
 756            if(wParam == TIMER_AUTOPRESS) {
 757                 KillTimer(hwnd, TIMER_AUTOPRESS);
 758                 infoPtr->Flags &= ~(FLAG_PRESSED | FLAG_ARROW);
 759                 InvalidateRect(infoPtr->Self, NULL, FALSE);
 760            }
 761
 762            /* if initial timer, kill it and start the repeat timer */
 763            if(wParam == TIMER_AUTOREPEAT) {
 764                 KillTimer(hwnd, TIMER_AUTOREPEAT);
 765                 /* if no accel info given, used default timer */
 766                 if(infoPtr->AccelCount==0 || infoPtr->AccelVect==0) {
 767                     infoPtr->AccelIndex = -1;
 768                     temp = REPEAT_DELAY;
 769                 } else {
 770                     infoPtr->AccelIndex = 0; /* otherwise, use it */
 771                     temp = infoPtr->AccelVect[infoPtr->AccelIndex].nSec * 1000 + 1;
 772                 }
 773                 SetTimer(hwnd, TIMER_ACCEL, temp, 0);
 774             }
 775
 776             /* now, if the mouse is above us, do the thing...*/
 777             if(infoPtr->Flags & FLAG_MOUSEIN) {
 778                 temp = infoPtr->AccelIndex == -1 ? 1 : infoPtr->AccelVect[infoPtr->AccelIndex].nInc;
 779                 UPDOWN_DoAction(infoPtr, temp, infoPtr->Flags & FLAG_ARROW);
 780
 781                 if(infoPtr->AccelIndex != -1 && infoPtr->AccelIndex < infoPtr->AccelCount-1) {
 782                     KillTimer(hwnd, TIMER_ACCEL);
 783                     infoPtr->AccelIndex++; /* move to the next accel info */
 784                     temp = infoPtr->AccelVect[infoPtr->AccelIndex].nSec * 1000 + 1;
 785                     /* make sure we have at least 1ms intervals */
 786                     SetTimer(hwnd, TIMER_ACCEL, temp, 0);
 787                 }
 788             }
 789             break;
 790
 791         case WM_CANCELMODE:
 792           return UPDOWN_CancelMode (infoPtr);
 793
 794         case WM_LBUTTONUP:
 795             if (GetCapture() != infoPtr->Self) break;
 796
 797             if ( (infoPtr->Flags & FLAG_MOUSEIN) &&
 798                  (infoPtr->Flags & FLAG_ARROW) ) {
 799
 800                 SendMessageW( infoPtr->Notify,
 801                               dwStyle & UDS_HORZ ? WM_HSCROLL : WM_VSCROLL,
 802                               MAKELONG(SB_ENDSCROLL, infoPtr->CurVal),
 803                               (LPARAM)hwnd);
 804                 if (UPDOWN_IsBuddyEdit(infoPtr))
 805                     SendMessageW(infoPtr->Buddy, EM_SETSEL, 0, MAKELONG(0, -1));
 806             }
 807             UPDOWN_CancelMode(infoPtr);
 808             break;
 809
 810         case WM_LBUTTONDOWN:
 811         case WM_MOUSEMOVE:
 812             if(UPDOWN_IsEnabled(infoPtr))
 813                 UPDOWN_HandleMouseEvent (infoPtr, message, MAKEPOINTS(lParam));
 814             break;
 815
 816         case WM_KEYDOWN:
 817             if((dwStyle & UDS_ARROWKEYS) && UPDOWN_IsEnabled(infoPtr))
 818                 return UPDOWN_KeyPressed(infoPtr, (int)wParam);
 819             break;
 820
 821         case WM_PAINT:
 822             return UPDOWN_Paint (infoPtr, (HDC)wParam);
 823
 824         case UDM_GETACCEL:
 825             if (wParam==0 && lParam==0) return infoPtr->AccelCount;
 826             if (wParam && lParam) {
 827                 temp = min(infoPtr->AccelCount, wParam);
 828                 memcpy((void *)lParam, infoPtr->AccelVect, temp*sizeof(UDACCEL));
 829                 return temp;
 830             }
 831             return 0;
 832
 833         case UDM_SETACCEL:
 834             TRACE("UpDown Ctrl new accel info, hwnd=%p\n", hwnd);
 835             if(infoPtr->AccelVect) {
 836                 Free (infoPtr->AccelVect);
 837                 infoPtr->AccelCount = 0;
 838                 infoPtr->AccelVect  = 0;
 839             }
 840             if(wParam==0) return TRUE;
 841             infoPtr->AccelVect = Alloc (wParam*sizeof(UDACCEL));
 842             if(infoPtr->AccelVect == 0) return FALSE;
 843             memcpy(infoPtr->AccelVect, (void*)lParam, wParam*sizeof(UDACCEL));
 844             return TRUE;
 845
 846         case UDM_GETBASE:
 847             return infoPtr->Base;
 848
 849         case UDM_SETBASE:
 850             TRACE("UpDown Ctrl new base(%d), hwnd=%p\n", wParam, hwnd);
 851             if (wParam==10 || wParam==16) {
 852                 temp = infoPtr->Base;
 853                 infoPtr->Base = wParam;
 854                 return temp;
 855             }
 856             break;
 857
 858         case UDM_GETBUDDY:
 859             return (LRESULT)infoPtr->Buddy;
 860
 861         case UDM_SETBUDDY:
 862             temp = (int)infoPtr->Buddy;
 863             UPDOWN_SetBuddy (infoPtr, (HWND)wParam);
 864             return temp;
 865
 866         case UDM_GETPOS:
 867             temp = UPDOWN_GetBuddyInt (infoPtr);
 868             return MAKELONG(infoPtr->CurVal, temp ? 0 : 1);
 869
 870         case UDM_SETPOS:
 871             temp = (short)LOWORD(lParam);
 872             TRACE("UpDown Ctrl new value(%d), hwnd=%p\n", temp, hwnd);
 873             if(!UPDOWN_InBounds(infoPtr, temp)) {
 874                 if(temp < infoPtr->MinVal) temp = infoPtr->MinVal;
 875                 if(temp > infoPtr->MaxVal) temp = infoPtr->MaxVal;
 876             }
 877             wParam = infoPtr->CurVal;
 878             infoPtr->CurVal = temp;
 879             if(dwStyle & UDS_SETBUDDYINT) UPDOWN_SetBuddyInt (infoPtr);
 880             return wParam;            /* return prev value */
 881
 882         case UDM_GETRANGE:
 883             return MAKELONG(infoPtr->MaxVal, infoPtr->MinVal);
 884
 885         case UDM_SETRANGE:
 886                                                      /* we must have:     */
 887             infoPtr->MaxVal = (short)(lParam);       /* UD_MINVAL <= Max <= UD_MAXVAL */
 888             infoPtr->MinVal = (short)HIWORD(lParam); /* UD_MINVAL <= Min <= UD_MAXVAL */
 889                                                      /* |Max-Min| <= UD_MAXVAL        */
 890             TRACE("UpDown Ctrl new range(%d to %d), hwnd=%p\n",
 891                   infoPtr->MinVal, infoPtr->MaxVal, hwnd);
 892             break;
 893
 894         case UDM_GETRANGE32:
 895             if (wParam) *(LPINT)wParam = infoPtr->MinVal;
 896             if (lParam) *(LPINT)lParam = infoPtr->MaxVal;
 897             break;
 898
 899         case UDM_SETRANGE32:
 900             infoPtr->MinVal = (INT)wParam;
 901             infoPtr->MaxVal = (INT)lParam;
 902             if (infoPtr->MaxVal <= infoPtr->MinVal)
 903                 infoPtr->MaxVal = infoPtr->MinVal + 1;
 904             TRACE("UpDown Ctrl new range(%d to %d), hwnd=%p\n",
 905                   infoPtr->MinVal, infoPtr->MaxVal, hwnd);
 906             break;
 907
 908         case UDM_GETPOS32:
 909             if ((LPBOOL)lParam != NULL) *((LPBOOL)lParam) = TRUE;
 910             return infoPtr->CurVal;
 911
 912         case UDM_SETPOS32:
 913             if(!UPDOWN_InBounds(infoPtr, (int)lParam)) {
 914                 if((int)lParam < infoPtr->MinVal) lParam = infoPtr->MinVal;
 915                 if((int)lParam > infoPtr->MaxVal) lParam = infoPtr->MaxVal;
 916             }
 917             temp = infoPtr->CurVal;         /* save prev value   */
 918             infoPtr->CurVal = (int)lParam;  /* set the new value */
 919             if(dwStyle & UDS_SETBUDDYINT) UPDOWN_SetBuddyInt (infoPtr);
 920             return temp;                    /* return prev value */
 921
 922         case UDM_GETUNICODEFORMAT:
 923             /* we lie a bit here, we're always using Unicode internally */
 924             return infoPtr->UnicodeFormat;
 925
 926         case UDM_SETUNICODEFORMAT:
 927             /* do we really need to honour this flag? */
 928             temp = infoPtr->UnicodeFormat;
 929             infoPtr->UnicodeFormat = (BOOL)wParam;
 930             return temp;
 931
 932         default:
 933             if ((message >= WM_USER) && (message < WM_APP))
 934                 ERR("unknown msg %04x wp=%04x lp=%08lx\n", message, wParam, lParam);
 935             return DefWindowProcW (hwnd, message, wParam, lParam);
 936     }
 937
 938     return 0;
 939 }
 940
 941 /***********************************************************************
 942  *              UPDOWN_Register [Internal]
 943  *
 944  * Registers the updown window class.
 945  */
 946 void UPDOWN_Register(void)
 947 {
 948     WNDCLASSW wndClass;
 949
 950     ZeroMemory( &wndClass, sizeof( WNDCLASSW ) );
 951     wndClass.style         = CS_GLOBALCLASS | CS_VREDRAW;
 952     wndClass.lpfnWndProc   = (WNDPROC)UpDownWindowProc;
 953     wndClass.cbClsExtra    = 0;
 954     wndClass.cbWndExtra    = sizeof(UPDOWN_INFO*);
 955     wndClass.hCursor       = LoadCursorW( 0, (LPWSTR)IDC_ARROW );
 956     wndClass.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1);
 957     wndClass.lpszClassName = UPDOWN_CLASSW;
 958
 959     RegisterClassW( &wndClass );
 960 }
 961
 962
 963 /***********************************************************************
 964  *              UPDOWN_Unregister       [Internal]
 965  *
 966  * Unregisters the updown window class.
 967  */
 968 void UPDOWN_Unregister (void)
 969 {
 970     UnregisterClassW (UPDOWN_CLASSW, NULL);
 971 }