reactos/lib/comctl32/trackbar.c

   1 /*
   2  * Trackbar control
   3  *
   4  * Copyright 1998, 1999 Eric Kohl
   5  * Copyright 1998, 1999 Alex Priem
   6  * Copyright 2002 Dimitrie O. Paun
   7  *
   8  * This library is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU Lesser General Public
  10  * License as published by the Free Software Foundation; either
  11  * version 2.1 of the License, or (at your option) any later version.
  12  *
  13  * This library is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  * Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public
  19  * License along with this library; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  * NOTE
  23  *
  24  * This code was audited for completeness against the documented features
  25  * of Comctl32.dll version 6.0 on Sep. 12, 2002, by Dimitrie O. Paun.
  26  *
  27  * Unless otherwise noted, we believe this code to be complete, as per
  28  * the specification mentioned above.
  29  * If you discover missing features, or bugs, please note them below.
  30  *
  31  */
  32
  33 #include <stdarg.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37
  38 #include "windef.h"
  39 #include "winbase.h"
  40 #include "wingdi.h"
  41 #include "winuser.h"
  42 #include "winnls.h"
  43 #include "commctrl.h"
  44 #include "wine/debug.h"
  45
  46 #include "comctl32.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(trackbar);
  49
  50 typedef struct
  51 {
  52     HWND hwndSelf;
  53     LONG lRangeMin;
  54     LONG lRangeMax;
  55     LONG lLineSize;
  56     LONG lPageSize;
  57     LONG lSelMin;
  58     LONG lSelMax;
  59     LONG lPos;
  60     UINT uThumbLen;
  61     UINT uNumTics;
  62     UINT uTicFreq;
  63     HWND hwndNotify;
  64     HWND hwndToolTip;
  65     HWND hwndBuddyLA;
  66     HWND hwndBuddyRB;
  67     INT  fLocation;
  68     INT  flags;
  69     BOOL bUnicode;
  70     BOOL bFocussed;
  71     RECT rcChannel;
  72     RECT rcSelection;
  73     RECT rcThumb;
  74     LPLONG tics;
  75 } TRACKBAR_INFO;
  76
  77 #define TB_REFRESH_TIMER        1
  78 #define TB_REFRESH_DELAY        500
  79
  80 #define TOOLTIP_OFFSET          2     /* distance from ctrl edge to tooltip */
  81
  82 /* Used by TRACKBAR_Refresh to find out which parts of the control
  83    need to be recalculated */
  84
  85 #define TB_THUMBPOSCHANGED      1
  86 #define TB_THUMBSIZECHANGED     2
  87 #define TB_THUMBCHANGED         (TB_THUMBPOSCHANGED | TB_THUMBSIZECHANGED)
  88 #define TB_SELECTIONCHANGED     4
  89 #define TB_DRAG_MODE            8     /* we're dragging the slider */
  90 #define TB_AUTO_PAGE_LEFT       16
  91 #define TB_AUTO_PAGE_RIGHT      32
  92 #define TB_AUTO_PAGE            (TB_AUTO_PAGE_LEFT | TB_AUTO_PAGE_RIGHT)
  93
  94 /* helper defines for TRACKBAR_DrawTic */
  95 #define TIC_EDGE                0x20
  96 #define TIC_SELECTIONMARKMAX    0x80
  97 #define TIC_SELECTIONMARKMIN    0x100
  98 #define TIC_SELECTIONMARK       (TIC_SELECTIONMARKMAX | TIC_SELECTIONMARKMIN)
  99
 100 static inline int
 101 notify_customdraw(TRACKBAR_INFO *infoPtr, NMCUSTOMDRAW *pnmcd, int stage)
 102 {
 103     pnmcd->dwDrawStage = stage;
 104     return SendMessageW (infoPtr->hwndNotify, WM_NOTIFY,
 105                          pnmcd->hdr.idFrom, (LPARAM)pnmcd);
 106 }
 107
 108 static LRESULT notify_hdr(TRACKBAR_INFO *infoPtr, INT code, LPNMHDR pnmh)
 109 {
 110     LRESULT result;
 111
 112     TRACE("(code=%d)\n", code);
 113
 114     pnmh->hwndFrom = infoPtr->hwndSelf;
 115     pnmh->idFrom = GetWindowLongPtrW(infoPtr->hwndSelf, GWLP_ID);
 116     pnmh->code = code;
 117     result = SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
 118                           (WPARAM)pnmh->idFrom, (LPARAM)pnmh);
 119
 120     TRACE("  <= %ld\n", result);
 121
 122     return result;
 123 }
 124
 125 static inline int notify(TRACKBAR_INFO *infoPtr, INT code)
 126 {
 127     NMHDR nmh;
 128     return notify_hdr(infoPtr, code, &nmh);
 129 }
 130
 131 static BOOL
 132 notify_with_scroll (TRACKBAR_INFO *infoPtr, UINT code)
 133 {
 134     BOOL bVert = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_VERT;
 135
 136     TRACE("%x\n", code);
 137
 138     return (BOOL) SendMessageW (infoPtr->hwndNotify,
 139                                 bVert ? WM_VSCROLL : WM_HSCROLL,
 140                                 (WPARAM)code, (LPARAM)infoPtr->hwndSelf);
 141 }
 142
 143 static void TRACKBAR_RecalculateTics (TRACKBAR_INFO *infoPtr)
 144 {
 145     int i, tic, nrTics;
 146
 147     if (infoPtr->uTicFreq && infoPtr->lRangeMax >= infoPtr->lRangeMin)
 148         nrTics=(infoPtr->lRangeMax - infoPtr->lRangeMin)/infoPtr->uTicFreq;
 149     else {
 150         nrTics = 0;
 151         Free (infoPtr->tics);
 152         infoPtr->tics = NULL;
 153         infoPtr->uNumTics = 0;
 154         return;
 155     }
 156
 157     if (nrTics != infoPtr->uNumTics) {
 158         infoPtr->tics=ReAlloc (infoPtr->tics,
 159                                         (nrTics+1)*sizeof (DWORD));
 160         if (!infoPtr->tics) {
 161             infoPtr->uNumTics = 0;
 162             notify(infoPtr, NM_OUTOFMEMORY);
 163             return;
 164         }
 165         infoPtr->uNumTics = nrTics;
 166     }
 167
 168     tic = infoPtr->lRangeMin + infoPtr->uTicFreq;
 169     for (i = 0; i < nrTics; i++, tic += infoPtr->uTicFreq)
 170         infoPtr->tics[i] = tic;
 171 }
 172
 173 /* converts from physical (mouse) position to logical position
 174    (in range of trackbar) */
 175
 176 static inline LONG
 177 TRACKBAR_ConvertPlaceToPosition (TRACKBAR_INFO *infoPtr, int place,
 178                                  int vertical)
 179 {
 180     double range, width, pos, offsetthumb;
 181
 182     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 183     if (vertical) {
 184         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 185         width = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - (offsetthumb * 2) - 1;
 186         pos = (range*(place - infoPtr->rcChannel.top - offsetthumb)) / width;
 187     } else {
 188         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 189         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - (offsetthumb * 2) - 1;
 190         pos = (range*(place - infoPtr->rcChannel.left - offsetthumb)) / width;
 191     }
 192     pos += infoPtr->lRangeMin;
 193     if (pos > infoPtr->lRangeMax)
 194         pos = infoPtr->lRangeMax;
 195     else if (pos < infoPtr->lRangeMin)
 196         pos = infoPtr->lRangeMin;
 197
 198     TRACE("%.2f\n", pos);
 199     return (LONG)(pos + 0.5);
 200 }
 201
 202
 203 /* return: 0> prev, 0 none, >0 next */
 204 static LONG
 205 TRACKBAR_GetAutoPageDirection (TRACKBAR_INFO *infoPtr, POINT clickPoint)
 206 {
 207     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 208     RECT pageRect;
 209
 210     if (dwStyle & TBS_VERT) {
 211         pageRect.top = infoPtr->rcChannel.top;
 212         pageRect.bottom = infoPtr->rcChannel.bottom;
 213         pageRect.left = infoPtr->rcThumb.left;
 214         pageRect.right = infoPtr->rcThumb.right;
 215     } else {
 216         pageRect.top = infoPtr->rcThumb.top;
 217         pageRect.bottom = infoPtr->rcThumb.bottom;
 218         pageRect.left = infoPtr->rcChannel.left;
 219         pageRect.right = infoPtr->rcChannel.right;
 220     }
 221
 222
 223     if (PtInRect(&pageRect, clickPoint))
 224     {
 225         int clickPlace = (dwStyle & TBS_VERT) ? clickPoint.y : clickPoint.x;
 226
 227         LONG clickPos = TRACKBAR_ConvertPlaceToPosition(infoPtr, clickPlace,
 228                                                         dwStyle & TBS_VERT);
 229         return clickPos - infoPtr->lPos;
 230     }
 231
 232     return 0;
 233 }
 234
 235 static void inline
 236 TRACKBAR_PageDown (TRACKBAR_INFO *infoPtr)
 237 {
 238     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 239
 240     infoPtr->lPos += infoPtr->lPageSize;
 241     if (infoPtr->lPos > infoPtr->lRangeMax)
 242         infoPtr->lPos = infoPtr->lRangeMax;
 243     notify_with_scroll (infoPtr, TB_PAGEDOWN);
 244 }
 245
 246
 247 static void inline
 248 TRACKBAR_PageUp (TRACKBAR_INFO *infoPtr)
 249 {
 250     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 251
 252     infoPtr->lPos -= infoPtr->lPageSize;
 253     if (infoPtr->lPos < infoPtr->lRangeMin)
 254         infoPtr->lPos = infoPtr->lRangeMin;
 255     notify_with_scroll (infoPtr, TB_PAGEUP);
 256 }
 257
 258 static void inline TRACKBAR_LineUp(TRACKBAR_INFO *infoPtr)
 259 {
 260     if (infoPtr->lPos == infoPtr->lRangeMin) return;
 261     infoPtr->lPos -= infoPtr->lLineSize;
 262     if (infoPtr->lPos < infoPtr->lRangeMin)
 263         infoPtr->lPos = infoPtr->lRangeMin;
 264     notify_with_scroll (infoPtr, TB_LINEUP);
 265 }
 266
 267 static void inline TRACKBAR_LineDown(TRACKBAR_INFO *infoPtr)
 268 {
 269     if (infoPtr->lPos == infoPtr->lRangeMax) return;
 270     infoPtr->lPos += infoPtr->lLineSize;
 271     if (infoPtr->lPos > infoPtr->lRangeMax)
 272         infoPtr->lPos = infoPtr->lRangeMax;
 273     notify_with_scroll (infoPtr, TB_LINEDOWN);
 274 }
 275
 276 static void
 277 TRACKBAR_CalcChannel (TRACKBAR_INFO *infoPtr)
 278 {
 279     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 280     INT cyChannel, offsetthumb, offsetedge;
 281     RECT lpRect, *channel = & infoPtr->rcChannel;
 282
 283     GetClientRect (infoPtr->hwndSelf, &lpRect);
 284
 285     offsetthumb = infoPtr->uThumbLen / 4;
 286     offsetedge  = offsetthumb + 3;
 287     cyChannel   = (dwStyle & TBS_ENABLESELRANGE) ? offsetthumb*3 : 4;
 288     if (dwStyle & TBS_VERT) {
 289         channel->top    = lpRect.top + offsetedge;
 290         channel->bottom = lpRect.bottom - offsetedge;
 291         if (dwStyle & TBS_ENABLESELRANGE)
 292             channel->left = lpRect.left + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 293         else
 294             channel->left = lpRect.left + (infoPtr->uThumbLen / 2) - 1;
 295         if (dwStyle & TBS_BOTH) {
 296             if (dwStyle & TBS_NOTICKS)
 297                 channel->left += 1;
 298             else
 299                 channel->left += 9;
 300         }
 301         else if (dwStyle & TBS_TOP) {
 302             if (dwStyle & TBS_NOTICKS)
 303                 channel->left += 2;
 304             else
 305                 channel->left += 10;
 306         }
 307         channel->right = channel->left + cyChannel;
 308     } else {
 309         channel->left = lpRect.left + offsetedge;
 310         channel->right = lpRect.right - offsetedge;
 311         if (dwStyle & TBS_ENABLESELRANGE)
 312             channel->top = lpRect.top + ((infoPtr->uThumbLen - cyChannel + 2) / 2);
 313         else
 314             channel->top = lpRect.top + (infoPtr->uThumbLen / 2) - 1;
 315         if (dwStyle & TBS_BOTH) {
 316             if (dwStyle & TBS_NOTICKS)
 317                 channel->top += 1;
 318             else
 319                 channel->top += 9;
 320         }
 321         else if (dwStyle & TBS_TOP) {
 322             if (dwStyle & TBS_NOTICKS)
 323                 channel->top += 2;
 324             else
 325                 channel->top += 10;
 326         }
 327         channel->bottom   = channel->top + cyChannel;
 328     }
 329 }
 330
 331 static void
 332 TRACKBAR_CalcThumb (TRACKBAR_INFO *infoPtr, LONG lPos, RECT *thumb)
 333 {
 334     int range, width, height, thumbwidth;
 335     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 336     RECT lpRect;
 337
 338     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 339     thumbwidth = (infoPtr->uThumbLen / 2) | 1;
 340
 341     if (!range) range = 1;
 342
 343     GetClientRect(infoPtr->hwndSelf, &lpRect);
 344     if (dwStyle & TBS_VERT)
 345     {
 346         height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - thumbwidth;
 347
 348         if ((dwStyle & (TBS_BOTH | TBS_LEFT)) && !(dwStyle & TBS_NOTICKS))
 349             thumb->left = 10;
 350         else
 351             thumb->left = 2;
 352         thumb->right = thumb->left + infoPtr->uThumbLen;
 353         thumb->top = infoPtr->rcChannel.top +
 354                      (height*(lPos - infoPtr->lRangeMin))/range;
 355         thumb->bottom = thumb->top + thumbwidth;
 356     }
 357     else
 358     {
 359         width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - thumbwidth;
 360
 361         thumb->left = infoPtr->rcChannel.left +
 362                       (width*(lPos - infoPtr->lRangeMin))/range;
 363         thumb->right = thumb->left + thumbwidth;
 364         if ((dwStyle & (TBS_BOTH | TBS_TOP)) && !(dwStyle & TBS_NOTICKS))
 365             thumb->top = 10;
 366         else
 367             thumb->top = 2;
 368         thumb->bottom = thumb->top + infoPtr->uThumbLen;
 369     }
 370 }
 371
 372 inline static void
 373 TRACKBAR_UpdateThumb (TRACKBAR_INFO *infoPtr)
 374 {
 375     TRACKBAR_CalcThumb(infoPtr, infoPtr->lPos, &infoPtr->rcThumb);
 376 }
 377
 378 static inline void
 379 TRACKBAR_InvalidateAll(TRACKBAR_INFO * infoPtr)
 380 {
 381     InvalidateRect(infoPtr->hwndSelf, NULL, FALSE);
 382 }
 383
 384 static void
 385 TRACKBAR_InvalidateThumb (TRACKBAR_INFO *infoPtr, LONG thumbPos)
 386 {
 387     RECT rcThumb;
 388
 389     TRACKBAR_CalcThumb(infoPtr, thumbPos, &rcThumb);
 390     InflateRect(&rcThumb, 1, 1);
 391     InvalidateRect(infoPtr->hwndSelf, &rcThumb, FALSE);
 392 }
 393
 394 static inline void
 395 TRACKBAR_InvalidateThumbMove (TRACKBAR_INFO *infoPtr, LONG oldPos, LONG newPos)
 396 {
 397     TRACKBAR_InvalidateThumb (infoPtr, oldPos);
 398     if (newPos != oldPos)
 399         TRACKBAR_InvalidateThumb (infoPtr, newPos);
 400 }
 401
 402 static BOOL inline
 403 TRACKBAR_HasSelection (TRACKBAR_INFO *infoPtr)
 404 {
 405     return infoPtr->lSelMin != infoPtr->lSelMax;
 406 }
 407
 408 static void
 409 TRACKBAR_CalcSelection (TRACKBAR_INFO *infoPtr)
 410 {
 411     RECT *selection = &infoPtr->rcSelection;
 412     int range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 413     int offsetthumb, height, width;
 414
 415     if (range <= 0) {
 416         SetRectEmpty (selection);
 417     } else {
 418         if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_VERT) {
 419             offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 420             height = infoPtr->rcChannel.bottom - infoPtr->rcChannel.top - offsetthumb*2;
 421             selection->top    = infoPtr->rcChannel.top + offsetthumb +
 422                 (height*infoPtr->lSelMin)/range;
 423             selection->bottom = infoPtr->rcChannel.top + offsetthumb +
 424                 (height*infoPtr->lSelMax)/range;
 425             selection->left   = infoPtr->rcChannel.left + 3;
 426             selection->right  = infoPtr->rcChannel.right - 3;
 427         } else {
 428             offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 429             width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
 430             selection->left   = infoPtr->rcChannel.left + offsetthumb +
 431                 (width*infoPtr->lSelMin)/range;
 432             selection->right  = infoPtr->rcChannel.left + offsetthumb +
 433                 (width*infoPtr->lSelMax)/range;
 434             selection->top    = infoPtr->rcChannel.top + 3;
 435             selection->bottom = infoPtr->rcChannel.bottom - 3;
 436         }
 437     }
 438
 439     TRACE("selection[left=%ld, top=%ld, right=%ld, bottom=%ld]\n",
 440            selection->left, selection->top, selection->right, selection->bottom);
 441 }
 442
 443 static BOOL
 444 TRACKBAR_AutoPage (TRACKBAR_INFO *infoPtr, POINT clickPoint)
 445 {
 446     LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
 447     LONG prevPos = infoPtr->lPos;
 448
 449     TRACE("x=%ld, y=%ld, dir=%ld\n", clickPoint.x, clickPoint.y, dir);
 450
 451     if (dir > 0 && (infoPtr->flags & TB_AUTO_PAGE_RIGHT))
 452         TRACKBAR_PageDown(infoPtr);
 453     else if (dir < 0 && (infoPtr->flags & TB_AUTO_PAGE_LEFT))
 454         TRACKBAR_PageUp(infoPtr);
 455     else return FALSE;
 456
 457     infoPtr->flags |= TB_THUMBPOSCHANGED;
 458     TRACKBAR_InvalidateThumbMove (infoPtr, prevPos, infoPtr->lPos);
 459
 460     return TRUE;
 461 }
 462
 463 /* Trackbar drawing code. I like my spaghetti done milanese.  */
 464
 465 static void
 466 TRACKBAR_DrawChannel (TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 467 {
 468     RECT rcChannel = infoPtr->rcChannel;
 469
 470     DrawEdge (hdc, &rcChannel, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 471     if (dwStyle & TBS_ENABLESELRANGE) {          /* fill the channel */
 472         FillRect (hdc, &rcChannel, GetStockObject(WHITE_BRUSH));
 473         if (TRACKBAR_HasSelection(infoPtr))
 474             FillRect (hdc, &infoPtr->rcSelection, GetSysColorBrush(COLOR_HIGHLIGHT));
 475     }
 476 }
 477
 478 static void
 479 TRACKBAR_DrawOneTic (TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 480 {
 481     int x, y, ox, oy, range, side, indent = 0, len = 3;
 482     int offsetthumb;
 483     RECT rcTics;
 484
 485     if (flags & TBS_VERT) {
 486         offsetthumb = (infoPtr->rcThumb.bottom - infoPtr->rcThumb.top)/2;
 487         rcTics.left = infoPtr->rcThumb.left - 2;
 488         rcTics.right = infoPtr->rcThumb.right + 2;
 489         rcTics.top    = infoPtr->rcChannel.top + offsetthumb + 1;
 490         rcTics.bottom = infoPtr->rcChannel.bottom - offsetthumb;
 491     } else {
 492         offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
 493         rcTics.left   = infoPtr->rcChannel.left + offsetthumb + 1;
 494         rcTics.right  = infoPtr->rcChannel.right - offsetthumb;
 495         rcTics.top = infoPtr->rcThumb.top - 2;
 496         rcTics.bottom = infoPtr->rcThumb.bottom + 2;
 497     }
 498
 499     if (flags & (TBS_TOP | TBS_LEFT)) {
 500         x = rcTics.left;
 501         y = rcTics.top;
 502         side = -1;
 503     } else {
 504         x = rcTics.right;
 505         y = rcTics.bottom;
 506         side = 1;
 507     }
 508
 509     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
 510     if (range <= 0)
 511       range = 1; /* to avoid division by zero */
 512
 513     if (flags & TIC_SELECTIONMARK) {
 514         indent = (flags & TIC_SELECTIONMARKMIN) ? -1 : 1;
 515     } else if (flags & TIC_EDGE) {
 516         len++;
 517     }
 518
 519     if (flags & TBS_VERT) {
 520         int height = rcTics.bottom - rcTics.top;
 521         y = rcTics.top + (height*(ticPos - infoPtr->lRangeMin))/range;
 522     } else {
 523         int width = rcTics.right - rcTics.left;
 524         x = rcTics.left + (width*(ticPos - infoPtr->lRangeMin))/range;
 525     }
 526
 527     ox = x;
 528     oy = y;
 529     MoveToEx(hdc, x, y, 0);
 530     if (flags & TBS_VERT) x += len * side;
 531     else y += len * side;
 532     LineTo(hdc, x, y);
 533
 534     if (flags & TIC_SELECTIONMARK) {
 535         if (flags & TBS_VERT) {
 536             x -= side;
 537         } else {
 538             y -= side;
 539         }
 540         MoveToEx(hdc, x, y, 0);
 541         if (flags & TBS_VERT) {
 542             y += 2 * indent;
 543         } else {
 544             x += 2 * indent;
 545         }
 546
 547         LineTo(hdc, x, y);
 548         LineTo(hdc, ox, oy);
 549     }
 550 }
 551
 552
 553 static inline void
 554 TRACKBAR_DrawTic (TRACKBAR_INFO *infoPtr, HDC hdc, LONG ticPos, int flags)
 555 {
 556     if ((flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 557         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags | TBS_LEFT);
 558
 559     if (!(flags & (TBS_LEFT | TBS_TOP)) || (flags & TBS_BOTH))
 560         TRACKBAR_DrawOneTic (infoPtr, hdc, ticPos, flags & ~TBS_LEFT);
 561 }
 562
 563 static void
 564 TRACKBAR_DrawTics (TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 565 {
 566     unsigned int i;
 567     int ticFlags = dwStyle & 0x0f;
 568     LOGPEN ticPen = { PS_SOLID, {1, 0}, GetSysColor (COLOR_3DDKSHADOW) };
 569     HPEN hOldPen, hTicPen;
 570
 571     /* create the pen to draw the tics with */
 572     hTicPen = CreatePenIndirect(&ticPen);
 573     hOldPen = hTicPen ? SelectObject(hdc, hTicPen) : 0;
 574
 575     /* actually draw the tics */
 576     for (i=0; i<infoPtr->uNumTics; i++)
 577         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->tics[i], ticFlags);
 578
 579     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMin, ticFlags | TIC_EDGE);
 580     TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lRangeMax, ticFlags | TIC_EDGE);
 581
 582     if ((dwStyle & TBS_ENABLESELRANGE) && TRACKBAR_HasSelection(infoPtr)) {
 583         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMin,
 584                           ticFlags | TIC_SELECTIONMARKMIN);
 585         TRACKBAR_DrawTic (infoPtr, hdc, infoPtr->lSelMax,
 586                           ticFlags | TIC_SELECTIONMARKMAX);
 587     }
 588
 589     /* clean up the pen, if we created one */
 590     if (hTicPen) {
 591         SelectObject(hdc, hOldPen);
 592         DeleteObject(hTicPen);
 593     }
 594 }
 595
 596 static void
 597 TRACKBAR_DrawThumb(TRACKBAR_INFO *infoPtr, HDC hdc, DWORD dwStyle)
 598 {
 599     HBRUSH oldbr;
 600     HPEN  oldpen;
 601     RECT thumb = infoPtr->rcThumb;
 602     int BlackUntil = 3;
 603     int PointCount = 6;
 604     POINT points[6];
 605     int fillClr;
 606     int PointDepth;
 607
 608     fillClr = infoPtr->flags & TB_DRAG_MODE ? COLOR_BTNHILIGHT : COLOR_BTNFACE;
 609     oldbr = SelectObject (hdc, GetSysColorBrush(fillClr));
 610     SetPolyFillMode (hdc, WINDING);
 611
 612     if (dwStyle & TBS_BOTH)
 613     {
 614        points[0].x=thumb.right;
 615        points[0].y=thumb.top;
 616        points[1].x=thumb.right;
 617        points[1].y=thumb.bottom;
 618        points[2].x=thumb.left;
 619        points[2].y=thumb.bottom;
 620        points[3].x=thumb.left;
 621        points[3].y=thumb.top;
 622        points[4].x=points[0].x;
 623        points[4].y=points[0].y;
 624        PointCount = 5;
 625        BlackUntil = 3;
 626     }
 627     else
 628     {
 629         if (dwStyle & TBS_VERT)
 630         {
 631           PointDepth = (thumb.bottom - thumb.top) / 2;
 632           if (dwStyle & TBS_LEFT)
 633           {
 634             points[0].x=thumb.right;
 635             points[0].y=thumb.top;
 636             points[1].x=thumb.right;
 637             points[1].y=thumb.bottom;
 638             points[2].x=thumb.left + PointDepth;
 639             points[2].y=thumb.bottom;
 640             points[3].x=thumb.left;
 641             points[3].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 642             points[4].x=thumb.left + PointDepth;
 643             points[4].y=thumb.top;
 644             points[5].x=points[0].x;
 645             points[5].y=points[0].y;
 646             BlackUntil = 4;
 647           }
 648           else
 649           {
 650             points[0].x=thumb.right;
 651             points[0].y=(thumb.bottom - thumb.top) / 2 + thumb.top + 1;
 652             points[1].x=thumb.right - PointDepth;
 653             points[1].y=thumb.bottom;
 654             points[2].x=thumb.left;
 655             points[2].y=thumb.bottom;
 656             points[3].x=thumb.left;
 657             points[3].y=thumb.top;
 658             points[4].x=thumb.right - PointDepth;
 659             points[4].y=thumb.top;
 660             points[5].x=points[0].x;
 661             points[5].y=points[0].y;
 662           }
 663         }
 664         else
 665         {
 666           PointDepth = (thumb.right - thumb.left) / 2;
 667           if (dwStyle & TBS_TOP)
 668           {
 669             points[0].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 670             points[0].y=thumb.top;
 671             points[1].x=thumb.right;
 672             points[1].y=thumb.top + PointDepth;
 673             points[2].x=thumb.right;
 674             points[2].y=thumb.bottom;
 675             points[3].x=thumb.left;
 676             points[3].y=thumb.bottom;
 677             points[4].x=thumb.left;
 678             points[4].y=thumb.top + PointDepth;
 679             points[5].x=points[0].x;
 680             points[5].y=points[0].y;
 681             BlackUntil = 4;
 682           }
 683           else
 684           {
 685             points[0].x=thumb.right;
 686             points[0].y=thumb.top;
 687             points[1].x=thumb.right;
 688             points[1].y=thumb.bottom - PointDepth;
 689             points[2].x=(thumb.right - thumb.left) / 2 + thumb.left + 1;
 690             points[2].y=thumb.bottom;
 691             points[3].x=thumb.left;
 692             points[3].y=thumb.bottom - PointDepth;
 693             points[4].x=thumb.left;
 694             points[4].y=thumb.top;
 695             points[5].x=points[0].x;
 696             points[5].y=points[0].y;
 697           }
 698         }
 699
 700     }
 701
 702     /* Draw the thumb now */
 703     Polygon (hdc, points, PointCount);
 704     oldpen = SelectObject(hdc, GetStockObject(BLACK_PEN));
 705     Polyline(hdc,points, BlackUntil);
 706     SelectObject(hdc, GetStockObject(WHITE_PEN));
 707     Polyline(hdc, &points[BlackUntil-1], PointCount+1-BlackUntil);
 708     SelectObject(hdc, oldpen);
 709     SelectObject(hdc, oldbr);
 710 }
 711
 712
 713 static void inline
 714 TRACKBAR_ActivateToolTip (TRACKBAR_INFO *infoPtr, BOOL fShow)
 715 {
 716     TTTOOLINFOW ti;
 717
 718     if (!infoPtr->hwndToolTip) return;
 719
 720     ZeroMemory(&ti, sizeof(ti));
 721     ti.cbSize = sizeof(ti);
 722     ti.hwnd   = infoPtr->hwndSelf;
 723
 724     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKACTIVATE, fShow, (LPARAM)&ti);
 725 }
 726
 727
 728 static void
 729 TRACKBAR_UpdateToolTip (TRACKBAR_INFO *infoPtr)
 730 {
 731     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 732     WCHAR buf[80];
 733     static const WCHAR fmt[] = { '%', 'l', 'd', 0 };
 734     TTTOOLINFOW ti;
 735     POINT pt;
 736     RECT rcClient;
 737     LRESULT size;
 738
 739     if (!infoPtr->hwndToolTip) return;
 740
 741     ZeroMemory(&ti, sizeof(ti));
 742     ti.cbSize = sizeof(ti);
 743     ti.hwnd   = infoPtr->hwndSelf;
 744     ti.uFlags = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
 745
 746     wsprintfW (buf, fmt, infoPtr->lPos);
 747     ti.lpszText = buf;
 748     SendMessageW (infoPtr->hwndToolTip, TTM_UPDATETIPTEXTW, 0, (LPARAM)&ti);
 749
 750     GetClientRect (infoPtr->hwndSelf, &rcClient);
 751     size = SendMessageW (infoPtr->hwndToolTip, TTM_GETBUBBLESIZE, 0, (LPARAM)&ti);
 752     if (dwStyle & TBS_VERT) {
 753         if (infoPtr->fLocation == TBTS_LEFT)
 754             pt.x = 0 - LOWORD(size) - TOOLTIP_OFFSET;
 755         else
 756             pt.x = rcClient.right + TOOLTIP_OFFSET;
 757         pt.y = (infoPtr->rcThumb.top + infoPtr->rcThumb.bottom - HIWORD(size))/2;
 758     } else {
 759         if (infoPtr->fLocation == TBTS_TOP)
 760             pt.y = 0 - HIWORD(size) - TOOLTIP_OFFSET;
 761         else
 762             pt.y = rcClient.bottom + TOOLTIP_OFFSET;
 763         pt.x = (infoPtr->rcThumb.left + infoPtr->rcThumb.right - LOWORD(size))/2;
 764     }
 765     ClientToScreen(infoPtr->hwndSelf, &pt);
 766
 767     SendMessageW (infoPtr->hwndToolTip, TTM_TRACKPOSITION,
 768                   0, (LPARAM)MAKELPARAM(pt.x, pt.y));
 769 }
 770
 771
 772 static void
 773 TRACKBAR_Refresh (TRACKBAR_INFO *infoPtr, HDC hdcDst)
 774 {
 775     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 776     RECT rcClient;
 777     HDC hdc;
 778     HBITMAP hOldBmp = 0, hOffScreenBmp = 0;
 779     NMCUSTOMDRAW nmcd;
 780     int gcdrf, icdrf;
 781
 782     if (infoPtr->flags & TB_THUMBCHANGED) {
 783         TRACKBAR_UpdateThumb (infoPtr);
 784         if (infoPtr->flags & TB_THUMBSIZECHANGED)
 785             TRACKBAR_CalcChannel (infoPtr);
 786     }
 787     if (infoPtr->flags & TB_SELECTIONCHANGED)
 788         TRACKBAR_CalcSelection (infoPtr);
 789
 790     if (infoPtr->flags & TB_DRAG_MODE)
 791         TRACKBAR_UpdateToolTip (infoPtr);
 792
 793     infoPtr->flags &= ~ (TB_THUMBCHANGED | TB_SELECTIONCHANGED);
 794
 795     GetClientRect (infoPtr->hwndSelf, &rcClient);
 796
 797     /* try to render offscreen, if we fail, carrry onscreen */
 798     hdc = CreateCompatibleDC(hdcDst);
 799     if (hdc) {
 800         hOffScreenBmp = CreateCompatibleBitmap(hdcDst, rcClient.right, rcClient.bottom);
 801         if (hOffScreenBmp) {
 802             hOldBmp = SelectObject(hdc, hOffScreenBmp);
 803         } else {
 804             DeleteObject(hdc);
 805             hdc = hdcDst;
 806         }
 807     } else {
 808         hdc = hdcDst;
 809     }
 810
 811     ZeroMemory(&nmcd, sizeof(nmcd));
 812     nmcd.hdr.hwndFrom = infoPtr->hwndSelf;
 813     nmcd.hdr.idFrom = GetWindowLongPtrW (infoPtr->hwndSelf, GWLP_ID);
 814     nmcd.hdr.code = NM_CUSTOMDRAW;
 815     nmcd.hdc = hdc;
 816
 817     /* start the paint cycle */
 818     nmcd.rc = rcClient;
 819     gcdrf = notify_customdraw(infoPtr, &nmcd, CDDS_PREPAINT);
 820     if (gcdrf & CDRF_SKIPDEFAULT) goto cleanup;
 821
 822     /* Erase backbround */
 823     if (gcdrf == CDRF_DODEFAULT ||
 824         notify_customdraw(infoPtr, &nmcd, CDDS_PREERASE) != CDRF_SKIPDEFAULT) {
 825         FillRect (hdc, &rcClient, GetSysColorBrush(COLOR_BTNFACE));
 826         if (gcdrf != CDRF_DODEFAULT)
 827             notify_customdraw(infoPtr, &nmcd, CDDS_POSTERASE);
 828     }
 829
 830     /* draw channel */
 831     if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 832         nmcd.dwItemSpec = TBCD_CHANNEL;
 833         nmcd.uItemState = CDIS_DEFAULT;
 834         nmcd.rc = infoPtr->rcChannel;
 835         icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 836     } else icdrf = CDRF_DODEFAULT;
 837     if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 838         TRACKBAR_DrawChannel (infoPtr, hdc, dwStyle);
 839         if (icdrf & CDRF_NOTIFYPOSTPAINT)
 840             notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 841     }
 842
 843
 844     /* draw tics */
 845     if (!(dwStyle & TBS_NOTICKS)) {
 846         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 847             nmcd.dwItemSpec = TBCD_TICS;
 848             nmcd.uItemState = CDIS_DEFAULT;
 849             nmcd.rc = rcClient;
 850             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 851         } else icdrf = CDRF_DODEFAULT;
 852         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 853             TRACKBAR_DrawTics (infoPtr, hdc, dwStyle);
 854             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 855                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 856         }
 857     }
 858
 859     /* draw thumb */
 860     if (!(dwStyle & TBS_NOTHUMB)) {
 861         if (gcdrf & CDRF_NOTIFYITEMDRAW) {
 862             nmcd.dwItemSpec = TBCD_THUMB;
 863             nmcd.uItemState = infoPtr->flags & TB_DRAG_MODE ? CDIS_HOT : CDIS_DEFAULT;
 864             nmcd.rc = infoPtr->rcThumb;
 865             icdrf = notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPREPAINT);
 866         } else icdrf = CDRF_DODEFAULT;
 867         if ( !(icdrf & CDRF_SKIPDEFAULT) ) {
 868             TRACKBAR_DrawThumb(infoPtr, hdc, dwStyle);
 869             if (icdrf & CDRF_NOTIFYPOSTPAINT)
 870                 notify_customdraw(infoPtr, &nmcd, CDDS_ITEMPOSTPAINT);
 871         }
 872     }
 873
 874     /* draw focus rectangle */
 875     if (infoPtr->bFocussed) {
 876         DrawFocusRect(hdc, &rcClient);
 877     }
 878
 879     /* finish up the painting */
 880     if (gcdrf & CDRF_NOTIFYPOSTPAINT)
 881         notify_customdraw(infoPtr, &nmcd, CDDS_POSTPAINT);
 882
 883 cleanup:
 884     /* cleanup, if we rendered offscreen */
 885     if (hdc != hdcDst) {
 886         BitBlt(hdcDst, 0, 0, rcClient.right, rcClient.bottom, hdc, 0, 0, SRCCOPY);
 887         SelectObject(hdc, hOldBmp);
 888         DeleteObject(hOffScreenBmp);
 889         DeleteObject(hdc);
 890     }
 891 }
 892
 893
 894 static void
 895 TRACKBAR_AlignBuddies (TRACKBAR_INFO *infoPtr)
 896 {
 897     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
 898     HWND hwndParent = GetParent (infoPtr->hwndSelf);
 899     RECT rcSelf, rcBuddy;
 900     INT x, y;
 901
 902     GetWindowRect (infoPtr->hwndSelf, &rcSelf);
 903     MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcSelf, 2);
 904
 905     /* align buddy left or above */
 906     if (infoPtr->hwndBuddyLA) {
 907         GetWindowRect (infoPtr->hwndBuddyLA, &rcBuddy);
 908         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 909
 910         if (dwStyle & TBS_VERT) {
 911             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 912                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 913             y = rcSelf.top - (rcBuddy.bottom - rcBuddy.top);
 914         }
 915         else {
 916             x = rcSelf.left - (rcBuddy.right - rcBuddy.left);
 917             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 918                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 919         }
 920
 921         SetWindowPos (infoPtr->hwndBuddyLA, 0, x, y, 0, 0,
 922                       SWP_NOZORDER | SWP_NOSIZE);
 923     }
 924
 925
 926     /* align buddy right or below */
 927     if (infoPtr->hwndBuddyRB) {
 928         GetWindowRect (infoPtr->hwndBuddyRB, &rcBuddy);
 929         MapWindowPoints (HWND_DESKTOP, hwndParent, (LPPOINT)&rcBuddy, 2);
 930
 931         if (dwStyle & TBS_VERT) {
 932             x = (infoPtr->rcChannel.right + infoPtr->rcChannel.left) / 2 -
 933                 (rcBuddy.right - rcBuddy.left) / 2 + rcSelf.left;
 934             y = rcSelf.bottom;
 935         }
 936         else {
 937             x = rcSelf.right;
 938             y = (infoPtr->rcChannel.bottom + infoPtr->rcChannel.top) / 2 -
 939                 (rcBuddy.bottom - rcBuddy.top) / 2 + rcSelf.top;
 940         }
 941         SetWindowPos (infoPtr->hwndBuddyRB, 0, x, y, 0, 0,
 942                       SWP_NOZORDER | SWP_NOSIZE);
 943     }
 944 }
 945
 946
 947 static LRESULT
 948 TRACKBAR_ClearSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
 949 {
 950     infoPtr->lSelMin = 0;
 951     infoPtr->lSelMax = 0;
 952     infoPtr->flags |= TB_SELECTIONCHANGED;
 953
 954     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
 955
 956     return 0;
 957 }
 958
 959
 960 static LRESULT
 961 TRACKBAR_ClearTics (TRACKBAR_INFO *infoPtr, BOOL fRedraw)
 962 {
 963     if (infoPtr->tics) {
 964         Free (infoPtr->tics);
 965         infoPtr->tics = NULL;
 966         infoPtr->uNumTics = 0;
 967     }
 968
 969     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
 970
 971     return 0;
 972 }
 973
 974
 975 static LRESULT inline
 976 TRACKBAR_GetChannelRect (TRACKBAR_INFO *infoPtr, LPRECT lprc)
 977 {
 978     if (lprc == NULL) return 0;
 979
 980     lprc->left   = infoPtr->rcChannel.left;
 981     lprc->right  = infoPtr->rcChannel.right;
 982     lprc->bottom = infoPtr->rcChannel.bottom;
 983     lprc->top    = infoPtr->rcChannel.top;
 984
 985     return 0;
 986 }
 987
 988
 989 static LONG inline
 990 TRACKBAR_GetNumTics (TRACKBAR_INFO *infoPtr)
 991 {
 992     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_NOTICKS)
 993         return 0;
 994
 995     return infoPtr->uNumTics + 2;
 996 }
 997
 998
 999 static int comp_tics(const void *ap, const void *bp)
1000 {
1001     DWORD a = *((DWORD *)ap);
1002     DWORD b = *((DWORD *)bp);
1003
1004     TRACE("(a=%ld, b=%ld)\n", a, b);
1005     if (a < b) return -1;
1006     if (a > b) return 1;
1007     return 0;
1008 }
1009
1010
1011 static LONG inline
1012 TRACKBAR_GetTic (TRACKBAR_INFO *infoPtr, INT iTic)
1013 {
1014     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1015         return -1;
1016
1017     qsort(infoPtr->tics, infoPtr->uNumTics, sizeof(DWORD), comp_tics);
1018     return infoPtr->tics[iTic];
1019 }
1020
1021
1022 static LONG inline
1023 TRACKBAR_GetTicPos (TRACKBAR_INFO *infoPtr, INT iTic)
1024 {
1025     LONG range, width, pos, tic;
1026     int offsetthumb;
1027
1028     if ((iTic < 0) || (iTic >= infoPtr->uNumTics) || !infoPtr->tics)
1029         return -1;
1030
1031     tic   = TRACKBAR_GetTic (infoPtr, iTic);
1032     range = infoPtr->lRangeMax - infoPtr->lRangeMin;
1033     if (range <= 0) range = 1;
1034     offsetthumb = (infoPtr->rcThumb.right - infoPtr->rcThumb.left)/2;
1035     width = infoPtr->rcChannel.right - infoPtr->rcChannel.left - offsetthumb*2;
1036     pos   = infoPtr->rcChannel.left + offsetthumb + (width * tic) / range;
1037
1038     return pos;
1039 }
1040
1041
1042 static HWND
1043 TRACKBAR_SetBuddy (TRACKBAR_INFO *infoPtr, BOOL fLocation, HWND hwndBuddy)
1044 {
1045     HWND hwndTemp;
1046
1047     if (fLocation) {
1048         /* buddy is left or above */
1049         hwndTemp = infoPtr->hwndBuddyLA;
1050         infoPtr->hwndBuddyLA = hwndBuddy;
1051     }
1052     else {
1053         /* buddy is right or below */
1054         hwndTemp = infoPtr->hwndBuddyRB;
1055         infoPtr->hwndBuddyRB = hwndBuddy;
1056     }
1057
1058     TRACKBAR_AlignBuddies (infoPtr);
1059
1060     return hwndTemp;
1061 }
1062
1063
1064 static LONG inline
1065 TRACKBAR_SetLineSize (TRACKBAR_INFO *infoPtr, LONG lLineSize)
1066 {
1067     LONG lTemp = infoPtr->lLineSize;
1068
1069     infoPtr->lLineSize = lLineSize;
1070
1071     return lTemp;
1072 }
1073
1074
1075 static LONG inline
1076 TRACKBAR_SetPageSize (TRACKBAR_INFO *infoPtr, LONG lPageSize)
1077 {
1078     LONG lTemp = infoPtr->lPageSize;
1079
1080     infoPtr->lPageSize = lPageSize;
1081
1082     return lTemp;
1083 }
1084
1085
1086 static LRESULT inline
1087 TRACKBAR_SetPos (TRACKBAR_INFO *infoPtr, BOOL fPosition, LONG lPosition)
1088 {
1089     LONG oldPos = infoPtr->lPos;
1090     infoPtr->lPos = lPosition;
1091
1092     if (infoPtr->lPos < infoPtr->lRangeMin)
1093         infoPtr->lPos = infoPtr->lRangeMin;
1094
1095     if (infoPtr->lPos > infoPtr->lRangeMax)
1096         infoPtr->lPos = infoPtr->lRangeMax;
1097     infoPtr->flags |= TB_THUMBPOSCHANGED;
1098
1099     if (fPosition) TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, lPosition);
1100
1101     return 0;
1102 }
1103
1104
1105 static LRESULT inline
1106 TRACKBAR_SetRange (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lRange)
1107 {
1108     infoPtr->lRangeMin = (SHORT)LOWORD(lRange);
1109     infoPtr->lRangeMax = (SHORT)HIWORD(lRange);
1110
1111     if (infoPtr->lPos < infoPtr->lRangeMin) {
1112         infoPtr->lPos = infoPtr->lRangeMin;
1113         infoPtr->flags |= TB_THUMBPOSCHANGED;
1114     }
1115
1116     if (infoPtr->lPos > infoPtr->lRangeMax) {
1117         infoPtr->lPos = infoPtr->lRangeMax;
1118         infoPtr->flags |= TB_THUMBPOSCHANGED;
1119     }
1120
1121     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1122     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1123
1124     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1125
1126     return 0;
1127 }
1128
1129
1130 static LRESULT inline
1131 TRACKBAR_SetRangeMax (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lMax)
1132 {
1133     infoPtr->lRangeMax = lMax;
1134     if (infoPtr->lPos > infoPtr->lRangeMax) {
1135         infoPtr->lPos = infoPtr->lRangeMax;
1136         infoPtr->flags |= TB_THUMBPOSCHANGED;
1137     }
1138
1139     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1140     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1141
1142     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1143
1144     return 0;
1145 }
1146
1147
1148 static LRESULT inline
1149 TRACKBAR_SetRangeMin (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lMin)
1150 {
1151     infoPtr->lRangeMin = lMin;
1152     if (infoPtr->lPos < infoPtr->lRangeMin) {
1153         infoPtr->lPos = infoPtr->lRangeMin;
1154         infoPtr->flags |= TB_THUMBPOSCHANGED;
1155     }
1156
1157     infoPtr->lPageSize = (infoPtr->lRangeMax - infoPtr->lRangeMin) / 5;
1158     if (infoPtr->lPageSize == 0) infoPtr->lPageSize = 1;
1159
1160     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1161
1162     return 0;
1163 }
1164
1165
1166 static LRESULT inline
1167 TRACKBAR_SetSel (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lSel)
1168 {
1169     if (!GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)
1170         return 0;
1171
1172     infoPtr->lSelMin = (SHORT)LOWORD(lSel);
1173     infoPtr->lSelMax = (SHORT)HIWORD(lSel);
1174     infoPtr->flags |= TB_SELECTIONCHANGED;
1175
1176     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1177         infoPtr->lSelMin = infoPtr->lRangeMin;
1178     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1179         infoPtr->lSelMax = infoPtr->lRangeMax;
1180
1181     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1182
1183     return 0;
1184 }
1185
1186
1187 static LRESULT inline
1188 TRACKBAR_SetSelEnd (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lEnd)
1189 {
1190     if (!GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)
1191         return 0;
1192
1193     infoPtr->lSelMax = lEnd;
1194     infoPtr->flags |= TB_SELECTIONCHANGED;
1195
1196     if (infoPtr->lSelMax > infoPtr->lRangeMax)
1197         infoPtr->lSelMax = infoPtr->lRangeMax;
1198
1199     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1200
1201     return 0;
1202 }
1203
1204
1205 static LRESULT inline
1206 TRACKBAR_SetSelStart (TRACKBAR_INFO *infoPtr, BOOL fRedraw, LONG lStart)
1207 {
1208     if (!GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_ENABLESELRANGE)
1209         return 0;
1210
1211     infoPtr->lSelMin = lStart;
1212     infoPtr->flags  |=TB_SELECTIONCHANGED;
1213
1214     if (infoPtr->lSelMin < infoPtr->lRangeMin)
1215         infoPtr->lSelMin = infoPtr->lRangeMin;
1216
1217     if (fRedraw) TRACKBAR_InvalidateAll(infoPtr);
1218
1219     return 0;
1220 }
1221
1222
1223 static LRESULT inline
1224 TRACKBAR_SetThumbLength (TRACKBAR_INFO *infoPtr, UINT iLength)
1225 {
1226     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_FIXEDLENGTH) {
1227         infoPtr->uThumbLen = iLength;
1228         infoPtr->flags |= TB_THUMBSIZECHANGED;
1229         InvalidateRect (infoPtr->hwndSelf, &infoPtr->rcThumb, FALSE);
1230     }
1231
1232     return 0;
1233 }
1234
1235
1236 static LRESULT inline
1237 TRACKBAR_SetTic (TRACKBAR_INFO *infoPtr, LONG lPos)
1238 {
1239     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_AUTOTICKS)
1240         return FALSE;
1241
1242     if ((lPos < infoPtr->lRangeMin) || (lPos> infoPtr->lRangeMax))
1243         return FALSE;
1244
1245     TRACE("lPos=%ld\n", lPos);
1246
1247     infoPtr->uNumTics++;
1248     infoPtr->tics=ReAlloc( infoPtr->tics,
1249                                     (infoPtr->uNumTics)*sizeof (DWORD));
1250     if (!infoPtr->tics) {
1251         infoPtr->uNumTics = 0;
1252         notify(infoPtr, NM_OUTOFMEMORY);
1253         return FALSE;
1254     }
1255     infoPtr->tics[infoPtr->uNumTics-1] = lPos;
1256
1257     TRACKBAR_InvalidateAll(infoPtr);
1258
1259     return TRUE;
1260 }
1261
1262
1263 static LRESULT inline
1264 TRACKBAR_SetTicFreq (TRACKBAR_INFO *infoPtr, WORD wFreq)
1265 {
1266     if (GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE) & TBS_AUTOTICKS) {
1267         infoPtr->uTicFreq = wFreq;
1268         TRACKBAR_RecalculateTics (infoPtr);
1269         TRACKBAR_InvalidateAll(infoPtr);
1270     }
1271
1272     return 0;
1273 }
1274
1275
1276 static INT inline
1277 TRACKBAR_SetTipSide (TRACKBAR_INFO *infoPtr, INT fLocation)
1278 {
1279     INT fTemp = infoPtr->fLocation;
1280
1281     infoPtr->fLocation = fLocation;
1282
1283     return fTemp;
1284 }
1285
1286
1287 static LRESULT inline
1288 TRACKBAR_SetToolTips (TRACKBAR_INFO *infoPtr, HWND hwndTT)
1289 {
1290     infoPtr->hwndToolTip = hwndTT;
1291
1292     return 0;
1293 }
1294
1295
1296 static BOOL inline
1297 TRACKBAR_SetUnicodeFormat (TRACKBAR_INFO *infoPtr, BOOL fUnicode)
1298 {
1299     BOOL bTemp = infoPtr->bUnicode;
1300
1301     infoPtr->bUnicode = fUnicode;
1302
1303     return bTemp;
1304 }
1305
1306
1307 static LRESULT
1308 TRACKBAR_InitializeThumb (TRACKBAR_INFO *infoPtr)
1309 {
1310     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1311     RECT rect;
1312     int clientWidth, clientMetric;
1313
1314     /* initial thumb length */
1315     clientMetric = (dwStyle & TBS_ENABLESELRANGE) ? 23 : 21;
1316     GetClientRect(infoPtr->hwndSelf,&rect);
1317     if (dwStyle & TBS_VERT) {
1318         clientWidth = rect.right - rect.left;
1319     } else {
1320         clientWidth = rect.bottom - rect.top;
1321     }
1322     if (clientWidth >= clientMetric)
1323         infoPtr->uThumbLen = clientMetric;
1324     else
1325         infoPtr->uThumbLen = clientWidth > 9 ? clientWidth - 6 : 4;
1326
1327     TRACKBAR_CalcChannel (infoPtr);
1328     TRACKBAR_UpdateThumb (infoPtr);
1329     infoPtr->flags &= ~TB_SELECTIONCHANGED;
1330
1331     return 0;
1332 }
1333
1334
1335 static LRESULT
1336 TRACKBAR_Create (HWND hwnd, LPCREATESTRUCTW lpcs)
1337 {
1338     TRACKBAR_INFO *infoPtr;
1339     DWORD dwStyle;
1340
1341     infoPtr = (TRACKBAR_INFO *)Alloc (sizeof(TRACKBAR_INFO));
1342     if (!infoPtr) return -1;
1343     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1344
1345     /* set default values */
1346     infoPtr->hwndSelf  = hwnd;
1347     infoPtr->lRangeMin = 0;
1348     infoPtr->lRangeMax = 100;
1349     infoPtr->lLineSize = 1;
1350     infoPtr->lPageSize = 20;
1351     infoPtr->lSelMin   = 0;
1352     infoPtr->lSelMax   = 0;
1353     infoPtr->lPos      = 0;
1354     infoPtr->fLocation = -1;
1355     infoPtr->uNumTics  = 0;    /* start and end tic are not included in count*/
1356     infoPtr->uTicFreq  = 1;
1357     infoPtr->tics      = NULL;
1358     infoPtr->hwndNotify= lpcs->hwndParent;
1359
1360     TRACKBAR_InitializeThumb (infoPtr);
1361
1362     dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1363
1364     /* Create tooltip control */
1365     if (dwStyle & TBS_TOOLTIPS) {
1366
1367         infoPtr->hwndToolTip =
1368             CreateWindowExW (0, TOOLTIPS_CLASSW, NULL, 0,
1369                              CW_USEDEFAULT, CW_USEDEFAULT,
1370                              CW_USEDEFAULT, CW_USEDEFAULT,
1371                              hwnd, 0, 0, 0);
1372
1373         if (infoPtr->hwndToolTip) {
1374             TTTOOLINFOW ti;
1375             ZeroMemory (&ti, sizeof(ti));
1376             ti.cbSize   = sizeof(ti);
1377             ti.uFlags   = TTF_IDISHWND | TTF_TRACK | TTF_ABSOLUTE;
1378             ti.hwnd     = hwnd;
1379
1380             SendMessageW (infoPtr->hwndToolTip, TTM_ADDTOOLW, 0, (LPARAM)&ti);
1381          }
1382     }
1383
1384     return 0;
1385 }
1386
1387
1388 static LRESULT
1389 TRACKBAR_Destroy (TRACKBAR_INFO *infoPtr)
1390 {
1391     /* delete tooltip control */
1392     if (infoPtr->hwndToolTip)
1393         DestroyWindow (infoPtr->hwndToolTip);
1394
1395     Free (infoPtr);
1396     SetWindowLongPtrW (infoPtr->hwndSelf, 0, 0);
1397     return 0;
1398 }
1399
1400
1401 static LRESULT
1402 TRACKBAR_KillFocus (TRACKBAR_INFO *infoPtr, HWND hwndGetFocus)
1403 {
1404     TRACE("\n");
1405     infoPtr->bFocussed = FALSE;
1406     TRACKBAR_InvalidateAll(infoPtr);
1407
1408     return 0;
1409 }
1410
1411 static LRESULT
1412 TRACKBAR_LButtonDown (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1413 {
1414     POINT clickPoint;
1415
1416     clickPoint.x = x;
1417     clickPoint.y = y;
1418
1419     SetFocus(infoPtr->hwndSelf);
1420
1421     if (PtInRect(&infoPtr->rcThumb, clickPoint)) {
1422         infoPtr->flags |= TB_DRAG_MODE;
1423         SetCapture (infoPtr->hwndSelf);
1424         TRACKBAR_UpdateToolTip (infoPtr);
1425         TRACKBAR_ActivateToolTip (infoPtr, TRUE);
1426         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1427     } else {
1428         LONG dir = TRACKBAR_GetAutoPageDirection(infoPtr, clickPoint);
1429         if (dir == 0) return 0;
1430         infoPtr->flags |= (dir < 0) ? TB_AUTO_PAGE_LEFT : TB_AUTO_PAGE_RIGHT;
1431         TRACKBAR_AutoPage (infoPtr, clickPoint);
1432         SetCapture (infoPtr->hwndSelf);
1433         SetTimer(infoPtr->hwndSelf, TB_REFRESH_TIMER, TB_REFRESH_DELAY, 0);
1434     }
1435
1436     return 0;
1437 }
1438
1439
1440 static LRESULT
1441 TRACKBAR_LButtonUp (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1442 {
1443     if (infoPtr->flags & TB_DRAG_MODE) {
1444         notify_with_scroll (infoPtr, TB_THUMBPOSITION | (infoPtr->lPos<<16));
1445         notify_with_scroll (infoPtr, TB_ENDTRACK);
1446         infoPtr->flags &= ~TB_DRAG_MODE;
1447         ReleaseCapture ();
1448         notify(infoPtr, NM_RELEASEDCAPTURE);
1449         TRACKBAR_ActivateToolTip(infoPtr, FALSE);
1450         TRACKBAR_InvalidateThumb(infoPtr, infoPtr->lPos);
1451     }
1452     if (infoPtr->flags & TB_AUTO_PAGE) {
1453         KillTimer (infoPtr->hwndSelf, TB_REFRESH_TIMER);
1454         infoPtr->flags &= ~TB_AUTO_PAGE;
1455         notify_with_scroll (infoPtr, TB_ENDTRACK);
1456         ReleaseCapture ();
1457         notify(infoPtr, NM_RELEASEDCAPTURE);
1458     }
1459
1460     return 0;
1461 }
1462
1463
1464 static LRESULT
1465 TRACKBAR_CaptureChanged (TRACKBAR_INFO *infoPtr)
1466 {
1467     notify_with_scroll (infoPtr, TB_ENDTRACK);
1468     return 0;
1469 }
1470
1471
1472 static LRESULT
1473 TRACKBAR_Paint (TRACKBAR_INFO *infoPtr, HDC hdc)
1474 {
1475     if (hdc) {
1476         TRACKBAR_Refresh(infoPtr, hdc);
1477     } else {
1478         PAINTSTRUCT ps;
1479         hdc = BeginPaint (infoPtr->hwndSelf, &ps);
1480         TRACKBAR_Refresh (infoPtr, hdc);
1481         EndPaint (infoPtr->hwndSelf, &ps);
1482     }
1483
1484     return 0;
1485 }
1486
1487
1488 static LRESULT
1489 TRACKBAR_SetFocus (TRACKBAR_INFO *infoPtr, HWND hwndLoseFocus)
1490 {
1491     TRACE("\n");
1492     infoPtr->bFocussed = TRUE;
1493     TRACKBAR_InvalidateAll(infoPtr);
1494
1495     return 0;
1496 }
1497
1498
1499 static LRESULT
1500 TRACKBAR_Size (TRACKBAR_INFO *infoPtr, DWORD fwSizeType, INT nWidth, INT nHeight)
1501 {
1502     TRACKBAR_InitializeThumb (infoPtr);
1503     TRACKBAR_AlignBuddies (infoPtr);
1504
1505     return 0;
1506 }
1507
1508
1509 static LRESULT
1510 TRACKBAR_Timer (TRACKBAR_INFO *infoPtr, INT wTimerID, TIMERPROC *tmrpc)
1511 {
1512     if (infoPtr->flags & TB_AUTO_PAGE) {
1513         POINT pt;
1514         if (GetCursorPos(&pt))
1515             if (ScreenToClient(infoPtr->hwndSelf, &pt))
1516                 TRACKBAR_AutoPage(infoPtr, pt);
1517     }
1518     return 0;
1519 }
1520
1521
1522 static LRESULT
1523 TRACKBAR_MouseMove (TRACKBAR_INFO *infoPtr, DWORD fwKeys, INT x, INT y)
1524 {
1525     DWORD dwStyle = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1526     INT clickPlace = (dwStyle & TBS_VERT) ? y : x;
1527     LONG dragPos, oldPos = infoPtr->lPos;
1528
1529     TRACE("(x=%d. y=%d)\n", x, y);
1530
1531     if (infoPtr->flags & TB_AUTO_PAGE) {
1532         POINT pt;
1533         pt.x = x;
1534         pt.y = y;
1535         TRACKBAR_AutoPage (infoPtr, pt);
1536         return TRUE;
1537     }
1538
1539     if (!(infoPtr->flags & TB_DRAG_MODE)) return TRUE;
1540
1541     dragPos = TRACKBAR_ConvertPlaceToPosition (infoPtr, clickPlace,
1542                                                dwStyle & TBS_VERT);
1543     if (dragPos == oldPos) return TRUE;
1544
1545     infoPtr->lPos = dragPos;
1546
1547     infoPtr->flags |= TB_THUMBPOSCHANGED;
1548     notify_with_scroll (infoPtr, TB_THUMBTRACK | (infoPtr->lPos<<16));
1549
1550
1551     TRACKBAR_InvalidateThumbMove(infoPtr, oldPos, dragPos);
1552     UpdateWindow (infoPtr->hwndSelf);
1553
1554     return TRUE;
1555 }
1556
1557 static BOOL
1558 TRACKBAR_KeyDown (TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
1559 {
1560     DWORD style = GetWindowLongW (infoPtr->hwndSelf, GWL_STYLE);
1561     BOOL downIsLeft = style & TBS_DOWNISLEFT;
1562     BOOL vert = style & TBS_VERT;
1563     LONG pos = infoPtr->lPos;
1564
1565     TRACE("%x\n", nVirtKey);
1566
1567     switch (nVirtKey) {
1568     case VK_UP:
1569         if (!vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1570         else TRACKBAR_LineUp(infoPtr);
1571         break;
1572     case VK_LEFT:
1573         if (vert && downIsLeft) TRACKBAR_LineDown(infoPtr);
1574         else TRACKBAR_LineUp(infoPtr);
1575         break;
1576     case VK_DOWN:
1577         if (!vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1578         else TRACKBAR_LineDown(infoPtr);
1579         break;
1580     case VK_RIGHT:
1581         if (vert && downIsLeft) TRACKBAR_LineUp(infoPtr);
1582         else TRACKBAR_LineDown(infoPtr);
1583         break;
1584     case VK_NEXT:
1585         if (!vert && downIsLeft) TRACKBAR_PageUp(infoPtr);
1586         else TRACKBAR_PageDown(infoPtr);
1587         break;
1588     case VK_PRIOR:
1589         if (!vert && downIsLeft) TRACKBAR_PageDown(infoPtr);
1590         else TRACKBAR_PageUp(infoPtr);
1591         break;
1592     case VK_HOME:
1593         if (infoPtr->lPos == infoPtr->lRangeMin) return FALSE;
1594         infoPtr->lPos = infoPtr->lRangeMin;
1595         notify_with_scroll (infoPtr, TB_TOP);
1596         break;
1597     case VK_END:
1598         if (infoPtr->lPos == infoPtr->lRangeMax) return FALSE;
1599         infoPtr->lPos = infoPtr->lRangeMax;
1600         notify_with_scroll (infoPtr, TB_BOTTOM);
1601         break;
1602     }
1603
1604     if (pos != infoPtr->lPos) {
1605         infoPtr->flags |=TB_THUMBPOSCHANGED;
1606         TRACKBAR_InvalidateThumbMove (infoPtr, pos, infoPtr->lPos);
1607     }
1608
1609     return TRUE;
1610 }
1611
1612
1613 static BOOL inline
1614 TRACKBAR_KeyUp (TRACKBAR_INFO *infoPtr, INT nVirtKey, DWORD lKeyData)
1615 {
1616     switch (nVirtKey) {
1617     case VK_LEFT:
1618     case VK_UP:
1619     case VK_RIGHT:
1620     case VK_DOWN:
1621     case VK_NEXT:
1622     case VK_PRIOR:
1623     case VK_HOME:
1624     case VK_END:
1625         notify_with_scroll (infoPtr, TB_ENDTRACK);
1626     }
1627     return TRUE;
1628 }
1629
1630
1631 static LRESULT WINAPI
1632 TRACKBAR_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
1633 {
1634     TRACKBAR_INFO *infoPtr = (TRACKBAR_INFO *)GetWindowLongPtrW (hwnd, 0);
1635
1636     TRACE("hwnd=%p msg=%x wparam=%x lparam=%lx\n", hwnd, uMsg, wParam, lParam);
1637
1638     if (!infoPtr && (uMsg != WM_CREATE))
1639         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1640
1641     switch (uMsg)
1642     {
1643     case TBM_CLEARSEL:
1644         return TRACKBAR_ClearSel (infoPtr, (BOOL)wParam);
1645
1646     case TBM_CLEARTICS:
1647         return TRACKBAR_ClearTics (infoPtr, (BOOL)wParam);
1648
1649     case TBM_GETBUDDY:
1650         return (LRESULT)(wParam ? infoPtr->hwndBuddyLA : infoPtr->hwndBuddyRB);
1651
1652     case TBM_GETCHANNELRECT:
1653         return TRACKBAR_GetChannelRect (infoPtr, (LPRECT)lParam);
1654
1655     case TBM_GETLINESIZE:
1656         return infoPtr->lLineSize;
1657
1658     case TBM_GETNUMTICS:
1659         return TRACKBAR_GetNumTics (infoPtr);
1660
1661     case TBM_GETPAGESIZE:
1662         return infoPtr->lPageSize;
1663
1664     case TBM_GETPOS:
1665         return infoPtr->lPos;
1666
1667     case TBM_GETPTICS:
1668         return (LRESULT)infoPtr->tics;
1669
1670     case TBM_GETRANGEMAX:
1671         return infoPtr->lRangeMax;
1672
1673     case TBM_GETRANGEMIN:
1674         return infoPtr->lRangeMin;
1675
1676     case TBM_GETSELEND:
1677         return infoPtr->lSelMax;
1678
1679     case TBM_GETSELSTART:
1680         return infoPtr->lSelMin;
1681
1682     case TBM_GETTHUMBLENGTH:
1683         return infoPtr->uThumbLen;
1684
1685     case TBM_GETTHUMBRECT:
1686         return CopyRect((LPRECT)lParam, &infoPtr->rcThumb);
1687
1688     case TBM_GETTIC:
1689         return TRACKBAR_GetTic (infoPtr, (INT)wParam);
1690
1691     case TBM_GETTICPOS:
1692         return TRACKBAR_GetTicPos (infoPtr, (INT)wParam);
1693
1694     case TBM_GETTOOLTIPS:
1695         return (LRESULT)infoPtr->hwndToolTip;
1696
1697     case TBM_GETUNICODEFORMAT:
1698         return infoPtr->bUnicode;
1699
1700     case TBM_SETBUDDY:
1701         return (LRESULT) TRACKBAR_SetBuddy(infoPtr, (BOOL)wParam, (HWND)lParam);
1702
1703     case TBM_SETLINESIZE:
1704         return TRACKBAR_SetLineSize (infoPtr, (LONG)lParam);
1705
1706     case TBM_SETPAGESIZE:
1707         return TRACKBAR_SetPageSize (infoPtr, (LONG)lParam);
1708
1709     case TBM_SETPOS:
1710         return TRACKBAR_SetPos (infoPtr, (BOOL)wParam, (LONG)lParam);
1711
1712     case TBM_SETRANGE:
1713         return TRACKBAR_SetRange (infoPtr, (BOOL)wParam, (LONG)lParam);
1714
1715     case TBM_SETRANGEMAX:
1716         return TRACKBAR_SetRangeMax (infoPtr, (BOOL)wParam, (LONG)lParam);
1717
1718     case TBM_SETRANGEMIN:
1719         return TRACKBAR_SetRangeMin (infoPtr, (BOOL)wParam, (LONG)lParam);
1720
1721     case TBM_SETSEL:
1722         return TRACKBAR_SetSel (infoPtr, (BOOL)wParam, (LONG)lParam);
1723
1724     case TBM_SETSELEND:
1725         return TRACKBAR_SetSelEnd (infoPtr, (BOOL)wParam, (LONG)lParam);
1726
1727     case TBM_SETSELSTART:
1728         return TRACKBAR_SetSelStart (infoPtr, (BOOL)wParam, (LONG)lParam);
1729
1730     case TBM_SETTHUMBLENGTH:
1731         return TRACKBAR_SetThumbLength (infoPtr, (UINT)wParam);
1732
1733     case TBM_SETTIC:
1734         return TRACKBAR_SetTic (infoPtr, (LONG)lParam);
1735
1736     case TBM_SETTICFREQ:
1737         return TRACKBAR_SetTicFreq (infoPtr, (WORD)wParam);
1738
1739     case TBM_SETTIPSIDE:
1740         return TRACKBAR_SetTipSide (infoPtr, (INT)wParam);
1741
1742     case TBM_SETTOOLTIPS:
1743         return TRACKBAR_SetToolTips (infoPtr, (HWND)wParam);
1744
1745     case TBM_SETUNICODEFORMAT:
1746         return TRACKBAR_SetUnicodeFormat (infoPtr, (BOOL)wParam);
1747
1748
1749     case WM_CAPTURECHANGED:
1750         return TRACKBAR_CaptureChanged (infoPtr);
1751
1752     case WM_CREATE:
1753         return TRACKBAR_Create (hwnd, (LPCREATESTRUCTW)lParam);
1754
1755     case WM_DESTROY:
1756         return TRACKBAR_Destroy (infoPtr);
1757
1758 /*      case WM_ENABLE: */
1759
1760     case WM_ERASEBKGND:
1761         return 0;
1762
1763     case WM_GETDLGCODE:
1764         return DLGC_WANTARROWS;
1765
1766     case WM_KEYDOWN:
1767         return TRACKBAR_KeyDown (infoPtr, (INT)wParam, (DWORD)lParam);
1768
1769     case WM_KEYUP:
1770         return TRACKBAR_KeyUp (infoPtr, (INT)wParam, (DWORD)lParam);
1771
1772     case WM_KILLFOCUS:
1773         return TRACKBAR_KillFocus (infoPtr, (HWND)wParam);
1774
1775     case WM_LBUTTONDOWN:
1776         return TRACKBAR_LButtonDown (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1777
1778     case WM_LBUTTONUP:
1779         return TRACKBAR_LButtonUp (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1780
1781     case WM_MOUSEMOVE:
1782         return TRACKBAR_MouseMove (infoPtr, wParam, (SHORT)LOWORD(lParam), (SHORT)HIWORD(lParam));
1783
1784     case WM_PAINT:
1785         return TRACKBAR_Paint (infoPtr, (HDC)wParam);
1786
1787     case WM_SETFOCUS:
1788         return TRACKBAR_SetFocus (infoPtr, (HWND)wParam);
1789
1790     case WM_SIZE:
1791         return TRACKBAR_Size (infoPtr, wParam, LOWORD(lParam), HIWORD(lParam));
1792
1793     case WM_TIMER:
1794         return TRACKBAR_Timer (infoPtr, (INT)wParam, (TIMERPROC *)lParam);
1795
1796     case WM_WININICHANGE:
1797         return TRACKBAR_InitializeThumb (infoPtr);
1798
1799     default:
1800         if ((uMsg >= WM_USER) && (uMsg < WM_APP))
1801             ERR("unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
1802         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
1803     }
1804 }
1805
1806
1807 void TRACKBAR_Register (void)
1808 {
1809     WNDCLASSW wndClass;
1810
1811     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
1812     wndClass.style         = CS_GLOBALCLASS;
1813     wndClass.lpfnWndProc   = TRACKBAR_WindowProc;
1814     wndClass.cbClsExtra    = 0;
1815     wndClass.cbWndExtra    = sizeof(TRACKBAR_INFO *);
1816     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_ARROW);
1817     wndClass.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
1818     wndClass.lpszClassName = TRACKBAR_CLASSW;
1819
1820     RegisterClassW (&wndClass);
1821 }
1822
1823
1824 void TRACKBAR_Unregister (void)
1825 {
1826     UnregisterClassW (TRACKBAR_CLASSW, NULL);
1827 }