dlls/comctl32/header.c

   1 /*
   2  *  Header control
   3  *
   4  *  Copyright 1998 Eric Kohl
   5  *
   6  *  TODO:
   7  *   - Imagelist support (partially).
   8  *   - Callback items (under construction).
   9  *   - Order list support.
  10  *   - Control specific cursors (over dividers).
  11  *   - Hottrack support (partially).
  12  *   - Custom draw support (including Notifications).
  13  *   - Drag and Drop support (including Notifications).
  14  *   - Unicode support.
  15  *
  16  *  FIXME:
  17  *   - Replace DrawText32A by DrawTextEx32A(...|DT_ENDELLIPSIS) in
  18  *     HEADER_DrawItem.
  19  *   - Little flaw when drawing a bitmap on the right side of the text.
  20  */
  21
  22 #include <string.h>
  23
  24 #include "winbase.h"
  25 #include "commctrl.h"
  26 #include "header.h"
  27 #include "debug.h"
  28
  29 DEFAULT_DEBUG_CHANNEL(header)
  30
  31
  32 #define __HDM_LAYOUT_HACK__
  33
  34
  35 #define VERT_BORDER     4
  36 #define DIVIDER_WIDTH  10
  37
  38 #define HEADER_GetInfoPtr(hwnd) ((HEADER_INFO *)GetWindowLongA(hwnd,0))
  39
  40
  41 static INT
  42 HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack)
  43 {
  44     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
  45     HEADER_ITEM *phdi = &infoPtr->items[iItem];
  46     RECT r;
  47     INT  oldBkMode;
  48
  49     r = phdi->rect;
  50     if (r.right - r.left == 0)
  51         return phdi->rect.right;
  52
  53     if (GetWindowLongA (hwnd, GWL_STYLE) & HDS_BUTTONS) {
  54         if (phdi->bDown) {
  55             DrawEdge (hdc, &r, BDR_RAISEDOUTER,
  56                         BF_RECT | BF_FLAT | BF_MIDDLE | BF_ADJUST);
  57             r.left += 2;
  58             r.top  += 2;
  59         }
  60         else
  61             DrawEdge (hdc, &r, EDGE_RAISED,
  62                         BF_RECT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
  63     }
  64     else
  65         DrawEdge (hdc, &r, EDGE_ETCHED, BF_BOTTOM | BF_RIGHT | BF_ADJUST);
  66
  67     if (phdi->fmt & HDF_OWNERDRAW) {
  68         DRAWITEMSTRUCT dis;
  69         dis.CtlType    = ODT_HEADER;
  70         dis.CtlID      = GetWindowLongA (hwnd, GWL_ID);
  71         dis.itemID     = iItem;
  72         dis.itemAction = ODA_DRAWENTIRE;
  73         dis.itemState  = phdi->bDown ? ODS_SELECTED : 0;
  74         dis.hwndItem   = hwnd;
  75         dis.hDC        = hdc;
  76         dis.rcItem     = r;
  77         dis.itemData   = phdi->lParam;
  78         SendMessageA (GetParent (hwnd), WM_DRAWITEM,
  79                         (WPARAM)dis.CtlID, (LPARAM)&dis);
  80     }
  81     else {
  82         UINT uTextJustify = DT_LEFT;
  83
  84         if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_CENTER)
  85             uTextJustify = DT_CENTER;
  86         else if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_RIGHT)
  87             uTextJustify = DT_RIGHT;
  88
  89         if ((phdi->fmt & HDF_BITMAP) && (phdi->hbm)) {
  90             BITMAP bmp;
  91             HDC    hdcBitmap;
  92             INT    yD, yS, cx, cy, rx, ry;
  93
  94             GetObjectA (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
  95
  96             ry = r.bottom - r.top;
  97             rx = r.right - r.left;
  98
  99             if (ry >= bmp.bmHeight) {
 100                 cy = bmp.bmHeight;
 101                 yD = r.top + (ry - bmp.bmHeight) / 2;
 102                 yS = 0;
 103             }
 104             else {
 105                 cy = ry;
 106                 yD = r.top;
 107                 yS = (bmp.bmHeight - ry) / 2;
 108
 109             }
 110
 111             if (rx >= bmp.bmWidth + 6) {
 112                 cx = bmp.bmWidth;
 113             }
 114             else {
 115                 cx = rx - 6;
 116             }
 117
 118             hdcBitmap = CreateCompatibleDC (hdc);
 119             SelectObject (hdcBitmap, phdi->hbm);
 120             BitBlt (hdc, r.left + 3, yD, cx, cy, hdcBitmap, 0, yS, SRCCOPY);
 121             DeleteDC (hdcBitmap);
 122
 123             r.left += (bmp.bmWidth + 3);
 124         }
 125
 126
 127         if ((phdi->fmt & HDF_BITMAP_ON_RIGHT) && (phdi->hbm)) {
 128             BITMAP bmp;
 129             HDC    hdcBitmap;
 130             INT    xD, yD, yS, cx, cy, rx, ry, tx;
 131             RECT   textRect;
 132
 133             GetObjectA (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
 134
 135             textRect = r;
 136             DrawTextW (hdc, phdi->pszText, lstrlenW (phdi->pszText),
 137                   &textRect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_CALCRECT);
 138             tx = textRect.right - textRect.left;
 139             ry = r.bottom - r.top;
 140             rx = r.right - r.left;
 141
 142             if (ry >= bmp.bmHeight) {
 143                 cy = bmp.bmHeight;
 144                 yD = r.top + (ry - bmp.bmHeight) / 2;
 145                 yS = 0;
 146             }
 147             else {
 148                 cy = ry;
 149                 yD = r.top;
 150                 yS = (bmp.bmHeight - ry) / 2;
 151
 152             }
 153
 154             if (r.left + tx + bmp.bmWidth + 9 <= r.right) {
 155                 cx = bmp.bmWidth;
 156                 xD = r.left + tx + 6;
 157             }
 158             else {
 159                 if (rx >= bmp.bmWidth + 6) {
 160                     cx = bmp.bmWidth;
 161                     xD = r.right - bmp.bmWidth - 3;
 162                     r.right = xD - 3;
 163                 }
 164                 else {
 165                     cx = rx - 3;
 166                     xD = r.left;
 167                     r.right = r.left;
 168                 }
 169             }
 170
 171             hdcBitmap = CreateCompatibleDC (hdc);
 172             SelectObject (hdcBitmap, phdi->hbm);
 173             BitBlt (hdc, xD, yD, cx, cy, hdcBitmap, 0, yS, SRCCOPY);
 174             DeleteDC (hdcBitmap);
 175         }
 176
 177         if (phdi->fmt & HDF_IMAGE) {
 178
 179
 180 /*          ImageList_Draw (infoPtr->himl, phdi->iImage,...); */
 181         }
 182
 183         if ((phdi->fmt & HDF_STRING) && (phdi->pszText)) {
 184             oldBkMode = SetBkMode(hdc, TRANSPARENT);
 185             r.left += 3;
 186             r.right -= 3;
 187             SetTextColor (hdc, bHotTrack ? COLOR_HIGHLIGHT : COLOR_BTNTEXT);
 188             DrawTextW (hdc, phdi->pszText, lstrlenW (phdi->pszText),
 189                   &r, uTextJustify|DT_VCENTER|DT_SINGLELINE);
 190             if (oldBkMode != TRANSPARENT)
 191                 SetBkMode(hdc, oldBkMode);
 192         }
 193     }
 194
 195     return phdi->rect.right;
 196 }
 197
 198
 199 static void
 200 HEADER_Refresh (HWND hwnd, HDC hdc)
 201 {
 202     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 203     HFONT hFont, hOldFont;
 204     RECT rect;
 205     HBRUSH hbrBk;
 206     INT i, x;
 207
 208     /* get rect for the bar, adjusted for the border */
 209     GetClientRect (hwnd, &rect);
 210
 211     hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
 212     hOldFont = SelectObject (hdc, hFont);
 213
 214     /* draw Background */
 215     hbrBk = GetSysColorBrush(COLOR_3DFACE);
 216     FillRect(hdc, &rect, hbrBk);
 217
 218     x = rect.left;
 219     for (i = 0; i < infoPtr->uNumItem; i++) {
 220         x = HEADER_DrawItem (hwnd, hdc, i, FALSE);
 221     }
 222
 223     if ((x <= rect.right) && (infoPtr->uNumItem > 0)) {
 224         rect.left = x;
 225         if (GetWindowLongA (hwnd, GWL_STYLE) & HDS_BUTTONS)
 226             DrawEdge (hdc, &rect, EDGE_RAISED, BF_TOP|BF_LEFT|BF_BOTTOM|BF_SOFT);
 227         else
 228             DrawEdge (hdc, &rect, EDGE_ETCHED, BF_BOTTOM);
 229     }
 230
 231     SelectObject (hdc, hOldFont);
 232 }
 233
 234
 235 static void
 236 HEADER_RefreshItem (HWND hwnd, HDC hdc, INT iItem)
 237 {
 238     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 239     HFONT hFont, hOldFont;
 240
 241     hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
 242     hOldFont = SelectObject (hdc, hFont);
 243     HEADER_DrawItem (hwnd, hdc, iItem, FALSE);
 244     SelectObject (hdc, hOldFont);
 245 }
 246
 247
 248 static void
 249 HEADER_SetItemBounds (HWND hwnd)
 250 {
 251     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 252     HEADER_ITEM *phdi;
 253     RECT rect;
 254     int i, x;
 255
 256     if (infoPtr->uNumItem == 0)
 257         return;
 258
 259     GetClientRect (hwnd, &rect);
 260
 261     x = rect.left;
 262     for (i = 0; i < infoPtr->uNumItem; i++) {
 263         phdi = &infoPtr->items[i];
 264         phdi->rect.top = rect.top;
 265         phdi->rect.bottom = rect.bottom;
 266         phdi->rect.left = x;
 267         phdi->rect.right = phdi->rect.left + phdi->cxy;
 268         x = phdi->rect.right;
 269     }
 270 }
 271
 272
 273 static void
 274 HEADER_ForceItemBounds (HWND hwnd, INT cy)
 275 {
 276     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 277     HEADER_ITEM *phdi;
 278     int i, x;
 279
 280     if (infoPtr->uNumItem == 0)
 281         return;
 282
 283     x = 0;
 284     for (i = 0; i < infoPtr->uNumItem; i++) {
 285         phdi = &infoPtr->items[i];
 286         phdi->rect.top = 0;
 287         phdi->rect.bottom = cy;
 288         phdi->rect.left = x;
 289         phdi->rect.right = phdi->rect.left + phdi->cxy;
 290         x = phdi->rect.right;
 291     }
 292 }
 293
 294
 295 static void
 296 HEADER_InternalHitTest (HWND hwnd, LPPOINT lpPt, UINT *pFlags, INT *pItem)
 297 {
 298     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 299     RECT rect, rcTest;
 300     INT  iCount, width;
 301     BOOL bNoWidth;
 302
 303     GetClientRect (hwnd, &rect);
 304
 305     *pFlags = 0;
 306     bNoWidth = FALSE;
 307     if (PtInRect (&rect, *lpPt))
 308     {
 309         if (infoPtr->uNumItem == 0) {
 310             *pFlags |= HHT_NOWHERE;
 311             *pItem = 1;
 312             TRACE (header, "NOWHERE\n");
 313             return;
 314         }
 315         else {
 316             /* somewhere inside */
 317             for (iCount = 0; iCount < infoPtr->uNumItem; iCount++) {
 318                 rect = infoPtr->items[iCount].rect;
 319                 width = rect.right - rect.left;
 320                 if (width == 0) {
 321                     bNoWidth = TRUE;
 322                     continue;
 323                 }
 324                 if (PtInRect (&rect, *lpPt)) {
 325                     if (width <= 2 * DIVIDER_WIDTH) {
 326                         *pFlags |= HHT_ONHEADER;
 327                         *pItem = iCount;
 328                         TRACE (header, "ON HEADER %d\n", iCount);
 329                         return;
 330                     }
 331                     if (iCount > 0) {
 332                         rcTest = rect;
 333                         rcTest.right = rcTest.left + DIVIDER_WIDTH;
 334                         if (PtInRect (&rcTest, *lpPt)) {
 335                             if (bNoWidth) {
 336                                 *pFlags |= HHT_ONDIVOPEN;
 337                                 *pItem = iCount - 1;
 338                                 TRACE (header, "ON DIVOPEN %d\n", *pItem);
 339                                 return;
 340                             }
 341                             else {
 342                                 *pFlags |= HHT_ONDIVIDER;
 343                                 *pItem = iCount - 1;
 344                                 TRACE (header, "ON DIVIDER %d\n", *pItem);
 345                                 return;
 346                             }
 347                         }
 348                     }
 349                     rcTest = rect;
 350                     rcTest.left = rcTest.right - DIVIDER_WIDTH;
 351                     if (PtInRect (&rcTest, *lpPt)) {
 352                         *pFlags |= HHT_ONDIVIDER;
 353                         *pItem = iCount;
 354                         TRACE (header, "ON DIVIDER %d\n", *pItem);
 355                         return;
 356                     }
 357
 358                     *pFlags |= HHT_ONHEADER;
 359                     *pItem = iCount;
 360                     TRACE (header, "ON HEADER %d\n", iCount);
 361                     return;
 362                 }
 363             }
 364
 365             /* check for last divider part (on nowhere) */
 366             rect = infoPtr->items[infoPtr->uNumItem-1].rect;
 367             rect.left = rect.right;
 368             rect.right += DIVIDER_WIDTH;
 369             if (PtInRect (&rect, *lpPt)) {
 370                 if (bNoWidth) {
 371                     *pFlags |= HHT_ONDIVOPEN;
 372                     *pItem = infoPtr->uNumItem - 1;
 373                     TRACE (header, "ON DIVOPEN %d\n", *pItem);
 374                     return;
 375                 }
 376                 else {
 377                     *pFlags |= HHT_ONDIVIDER;
 378                     *pItem = infoPtr->uNumItem-1;
 379                     TRACE (header, "ON DIVIDER %d\n", *pItem);
 380                     return;
 381                 }
 382             }
 383
 384             *pFlags |= HHT_NOWHERE;
 385             *pItem = 1;
 386             TRACE (header, "NOWHERE\n");
 387             return;
 388         }
 389     }
 390     else {
 391         if (lpPt->x < rect.left) {
 392            TRACE (header, "TO LEFT\n");
 393            *pFlags |= HHT_TOLEFT;
 394         }
 395         else if (lpPt->x > rect.right) {
 396             TRACE (header, "TO LEFT\n");
 397             *pFlags |= HHT_TORIGHT;
 398         }
 399
 400         if (lpPt->y < rect.top) {
 401             TRACE (header, "ABOVE\n");
 402             *pFlags |= HHT_ABOVE;
 403         }
 404         else if (lpPt->y > rect.bottom) {
 405             TRACE (header, "BELOW\n");
 406             *pFlags |= HHT_BELOW;
 407         }
 408     }
 409
 410     *pItem = 1;
 411     TRACE (header, "flags=0x%X\n", *pFlags);
 412     return;
 413 }
 414
 415
 416 static void
 417 HEADER_DrawTrackLine (HWND hwnd, HDC hdc, INT x)
 418 {
 419     RECT rect;
 420     HPEN hOldPen;
 421     INT  oldRop;
 422
 423     GetClientRect (hwnd, &rect);
 424
 425     hOldPen = SelectObject (hdc, GetStockObject (BLACK_PEN));
 426     oldRop = SetROP2 (hdc, R2_XORPEN);
 427     MoveToEx (hdc, x, rect.top, NULL);
 428     LineTo (hdc, x, rect.bottom);
 429     SetROP2 (hdc, oldRop);
 430     SelectObject (hdc, hOldPen);
 431 }
 432
 433
 434 static BOOL
 435 HEADER_SendSimpleNotify (HWND hwnd, UINT code)
 436 {
 437     NMHDR nmhdr;
 438
 439     nmhdr.hwndFrom = hwnd;
 440     nmhdr.idFrom   = GetWindowLongA (hwnd, GWL_ID);
 441     nmhdr.code     = code;
 442
 443     return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
 444                                    (WPARAM)nmhdr.idFrom, (LPARAM)&nmhdr);
 445 }
 446
 447
 448 static BOOL
 449 HEADER_SendHeaderNotify (HWND hwnd, UINT code, INT iItem)
 450 {
 451     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 452     NMHEADERA nmhdr;
 453     HDITEMA nmitem;
 454
 455     nmhdr.hdr.hwndFrom = hwnd;
 456     nmhdr.hdr.idFrom   = GetWindowLongA (hwnd, GWL_ID);
 457     nmhdr.hdr.code = code;
 458     nmhdr.iItem = iItem;
 459     nmhdr.iButton = 0;
 460     nmhdr.pitem = &nmitem;
 461     nmitem.mask = 0;
 462     nmitem.cxy = infoPtr->items[iItem].cxy;
 463     nmitem.hbm = infoPtr->items[iItem].hbm;
 464     nmitem.pszText = NULL;
 465     nmitem.cchTextMax = 0;
 466 /*    nmitem.pszText = infoPtr->items[iItem].pszText; */
 467 /*    nmitem.cchTextMax = infoPtr->items[iItem].cchTextMax; */
 468     nmitem.fmt = infoPtr->items[iItem].fmt;
 469     nmitem.lParam = infoPtr->items[iItem].lParam;
 470     nmitem.iOrder = infoPtr->items[iItem].iOrder;
 471     nmitem.iImage = infoPtr->items[iItem].iImage;
 472
 473     return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
 474                                (WPARAM)nmhdr.hdr.idFrom, (LPARAM)&nmhdr);
 475 }
 476
 477
 478 static BOOL
 479 HEADER_SendClickNotify (HWND hwnd, UINT code, INT iItem)
 480 {
 481     NMHEADERA nmhdr;
 482
 483     nmhdr.hdr.hwndFrom = hwnd;
 484     nmhdr.hdr.idFrom   = GetWindowLongA (hwnd, GWL_ID);
 485     nmhdr.hdr.code = code;
 486     nmhdr.iItem = iItem;
 487     nmhdr.iButton = 0;
 488     nmhdr.pitem = NULL;
 489
 490     return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
 491                                (WPARAM)nmhdr.hdr.idFrom, (LPARAM)&nmhdr);
 492 }
 493
 494
 495 static LRESULT
 496 HEADER_CreateDragImage (HWND hwnd, WPARAM wParam)
 497 {
 498     FIXME (header, "empty stub!\n");
 499     return 0;
 500 }
 501
 502
 503 static LRESULT
 504 HEADER_DeleteItem (HWND hwnd, WPARAM wParam)
 505 {
 506     HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
 507     INT iItem = (INT)wParam;
 508     HDC hdc;
 509
 510     TRACE(header, "[iItem=%d]\n", iItem);
 511
 512     if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
 513         return FALSE;
 514
 515     if (infoPtr->uNumItem == 1) {
 516         TRACE(header, "Simple delete!\n");
 517         if (infoPtr->items[0].pszText)
 518             COMCTL32_Free (infoPtr->items[0].pszText);
 519         COMCTL32_Free (infoPtr->items);
 520         infoPtr->items = 0;
 521         infoPtr->uNumItem = 0;
 522     }
 523     else {
 524         HEADER_ITEM *oldItems = infoPtr->items;
 525         TRACE(header, "Complex delete! [iItem=%d]\n", iItem);
 526
 527         if (infoPtr->items[iItem].pszText)
 528             COMCTL32_Free (infoPtr->items[iItem].pszText);
 529
 530         infoPtr->uNumItem--;
 531         infoPtr->items = COMCTL32_Alloc (sizeof (HEADER_ITEM) * infoPtr->uNumItem);
 532         /* pre delete copy */
 533         if (iItem > 0) {
 534             memcpy (&infoPtr->items[0], &oldItems[0],
 535                     iItem * sizeof(HEADER_ITEM));
 536         }
 537
 538         /* post delete copy */
 539         if (iItem < infoPtr->uNumItem) {
 540             memcpy (&infoPtr->items[iItem], &oldItems[iItem+1],
 541                     (infoPtr->uNumItem - iItem) * sizeof(HEADER_ITEM));
 542         }
 543
 544         COMCTL32_Free (oldItems);
 545     }
 546
 547     HEADER_SetItemBounds (hwnd);
 548
 549     hdc = GetDC (hwnd);
 550     HEADER_Refresh (hwnd, hdc);
 551     ReleaseDC (hwnd, hdc);
 552
 553     return TRUE;
 554 }
 555
 556
 557 static LRESULT
 558 HEADER_GetImageList (HWND hwnd)
 559 {
 560     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 561
 562     return (LRESULT)infoPtr->himl;
 563 }
 564
 565
 566 static LRESULT
 567 HEADER_GetItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
 568 {
 569     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 570     HDITEMA   *phdi = (HDITEMA*)lParam;
 571     INT       nItem = (INT)wParam;
 572     HEADER_ITEM *lpItem;
 573
 574     if (!phdi)
 575         return FALSE;
 576     if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
 577         return FALSE;
 578
 579     TRACE (header, "[nItem=%d]\n", nItem);
 580
 581     if (phdi->mask == 0)
 582         return TRUE;
 583
 584     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
 585     if (phdi->mask & HDI_BITMAP)
 586         phdi->hbm = lpItem->hbm;
 587
 588     if (phdi->mask & HDI_FORMAT)
 589         phdi->fmt = lpItem->fmt;
 590
 591     if (phdi->mask & HDI_WIDTH)
 592         phdi->cxy = lpItem->cxy;
 593
 594     if (phdi->mask & HDI_LPARAM)
 595         phdi->lParam = lpItem->lParam;
 596
 597     if (phdi->mask & HDI_TEXT) {
 598         if (lpItem->pszText != LPSTR_TEXTCALLBACKW)
 599             lstrcpynWtoA (phdi->pszText, lpItem->pszText, phdi->cchTextMax);
 600         else
 601             phdi->pszText = LPSTR_TEXTCALLBACKA;
 602     }
 603
 604     if (phdi->mask & HDI_IMAGE)
 605         phdi->iImage = lpItem->iImage;
 606
 607     if (phdi->mask & HDI_ORDER)
 608         phdi->iOrder = lpItem->iOrder;
 609
 610     return TRUE;
 611 }
 612
 613
 614 static LRESULT
 615 HEADER_GetItemW (HWND hwnd, WPARAM wParam, LPARAM lParam)
 616 {
 617     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 618     HDITEMW   *phdi = (HDITEMW*)lParam;
 619     INT       nItem = (INT)wParam;
 620     HEADER_ITEM *lpItem;
 621
 622     if (!phdi)
 623         return FALSE;
 624     if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
 625         return FALSE;
 626
 627     TRACE (header, "[nItem=%d]\n", nItem);
 628
 629     if (phdi->mask == 0)
 630         return TRUE;
 631
 632     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
 633     if (phdi->mask & HDI_BITMAP)
 634         phdi->hbm = lpItem->hbm;
 635
 636     if (phdi->mask & HDI_FORMAT)
 637         phdi->fmt = lpItem->fmt;
 638
 639     if (phdi->mask & HDI_WIDTH)
 640         phdi->cxy = lpItem->cxy;
 641
 642     if (phdi->mask & HDI_LPARAM)
 643         phdi->lParam = lpItem->lParam;
 644
 645     if (phdi->mask & HDI_TEXT) {
 646         if (lpItem->pszText != LPSTR_TEXTCALLBACKW)
 647             lstrcpynW (phdi->pszText, lpItem->pszText, phdi->cchTextMax);
 648         else
 649             phdi->pszText = LPSTR_TEXTCALLBACKW;
 650     }
 651
 652     if (phdi->mask & HDI_IMAGE)
 653         phdi->iImage = lpItem->iImage;
 654
 655     if (phdi->mask & HDI_ORDER)
 656         phdi->iOrder = lpItem->iOrder;
 657
 658     return TRUE;
 659 }
 660
 661
 662 __inline__ static LRESULT
 663 HEADER_GetItemCount (HWND hwnd)
 664 {
 665     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 666     return infoPtr->uNumItem;
 667 }
 668
 669
 670 static LRESULT
 671 HEADER_GetItemRect (HWND hwnd, WPARAM wParam, LPARAM lParam)
 672 {
 673     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 674     INT iItem = (INT)wParam;
 675     LPRECT lpRect = (LPRECT)lParam;
 676
 677     if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
 678         return FALSE;
 679
 680     lpRect->left   = infoPtr->items[iItem].rect.left;
 681     lpRect->right  = infoPtr->items[iItem].rect.right;
 682     lpRect->top    = infoPtr->items[iItem].rect.top;
 683     lpRect->bottom = infoPtr->items[iItem].rect.bottom;
 684
 685     return TRUE;
 686 }
 687
 688
 689 /* << HEADER_GetOrderArray >> */
 690
 691
 692 __inline__ static LRESULT
 693 HEADER_GetUnicodeFormat (HWND hwnd)
 694 {
 695     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 696     return infoPtr->bUnicode;
 697 }
 698
 699
 700 static LRESULT
 701 HEADER_HitTest (HWND hwnd, WPARAM wParam, LPARAM lParam)
 702 {
 703     LPHDHITTESTINFO phti = (LPHDHITTESTINFO)lParam;
 704
 705     HEADER_InternalHitTest (hwnd, &phti->pt, &phti->flags, &phti->iItem);
 706
 707     return phti->flags;
 708 }
 709
 710
 711 static LRESULT
 712 HEADER_InsertItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
 713 {
 714     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 715     HDITEMA   *phdi = (HDITEMA*)lParam;
 716     INT       nItem = (INT)wParam;
 717     HEADER_ITEM *lpItem;
 718     HDC       hdc;
 719     INT       len;
 720
 721     if ((phdi == NULL) || (nItem < 0))
 722         return -1;
 723
 724     if (nItem > infoPtr->uNumItem)
 725         nItem = infoPtr->uNumItem;
 726
 727     if (infoPtr->uNumItem == 0) {
 728         infoPtr->items = COMCTL32_Alloc (sizeof (HEADER_ITEM));
 729         infoPtr->uNumItem++;
 730     }
 731     else {
 732         HEADER_ITEM *oldItems = infoPtr->items;
 733
 734         infoPtr->uNumItem++;
 735         infoPtr->items = COMCTL32_Alloc (sizeof (HEADER_ITEM) * infoPtr->uNumItem);
 736         if (nItem == 0) {
 737             memcpy (&infoPtr->items[1], &oldItems[0],
 738                     (infoPtr->uNumItem-1) * sizeof(HEADER_ITEM));
 739         }
 740         else
 741         {
 742               /* pre insert copy */
 743             if (nItem > 0) {
 744                  memcpy (&infoPtr->items[0], &oldItems[0],
 745                          nItem * sizeof(HEADER_ITEM));
 746             }
 747
 748             /* post insert copy */
 749             if (nItem < infoPtr->uNumItem - 1) {
 750                 memcpy (&infoPtr->items[nItem+1], &oldItems[nItem],
 751                         (infoPtr->uNumItem - nItem) * sizeof(HEADER_ITEM));
 752             }
 753         }
 754
 755         COMCTL32_Free (oldItems);
 756     }
 757
 758     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
 759     lpItem->bDown = FALSE;
 760
 761     if (phdi->mask & HDI_WIDTH)
 762         lpItem->cxy = phdi->cxy;
 763
 764     if (phdi->mask & HDI_TEXT) {
 765         if (!phdi->pszText) /* null pointer check */
 766         {
 767             lpItem->pszText = COMCTL32_Alloc(sizeof(WCHAR));
 768             lstrcpyAtoW(lpItem->pszText, "");
 769         }
 770         else if (phdi->pszText != LPSTR_TEXTCALLBACKA) {
 771             len = lstrlenA (phdi->pszText);
 772             lpItem->pszText = COMCTL32_Alloc ((len+1)*sizeof(WCHAR));
 773             lstrcpyAtoW (lpItem->pszText, phdi->pszText);
 774         }
 775         else
 776             lpItem->pszText = LPSTR_TEXTCALLBACKW;
 777     }
 778
 779     if (phdi->mask & HDI_FORMAT)
 780         lpItem->fmt = phdi->fmt;
 781
 782     if (lpItem->fmt == 0)
 783         lpItem->fmt = HDF_LEFT;
 784
 785     if (phdi->mask & HDI_BITMAP)
 786         lpItem->hbm = phdi->hbm;
 787
 788     if (phdi->mask & HDI_LPARAM)
 789         lpItem->lParam = phdi->lParam;
 790
 791     if (phdi->mask & HDI_IMAGE)
 792         lpItem->iImage = phdi->iImage;
 793
 794     if (phdi->mask & HDI_ORDER)
 795         lpItem->iOrder = phdi->iOrder;
 796
 797     HEADER_SetItemBounds (hwnd);
 798
 799     hdc = GetDC (hwnd);
 800     HEADER_Refresh (hwnd, hdc);
 801     ReleaseDC (hwnd, hdc);
 802
 803     return nItem;
 804 }
 805
 806
 807 static LRESULT
 808 HEADER_InsertItemW (HWND hwnd, WPARAM wParam, LPARAM lParam)
 809 {
 810     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 811     HDITEMW   *phdi = (HDITEMW*)lParam;
 812     INT       nItem = (INT)wParam;
 813     HEADER_ITEM *lpItem;
 814     HDC       hdc;
 815     INT       len;
 816
 817     if ((phdi == NULL) || (nItem < 0))
 818         return -1;
 819
 820     if (nItem > infoPtr->uNumItem)
 821         nItem = infoPtr->uNumItem;
 822
 823     if (infoPtr->uNumItem == 0) {
 824         infoPtr->items = COMCTL32_Alloc (sizeof (HEADER_ITEM));
 825         infoPtr->uNumItem++;
 826     }
 827     else {
 828         HEADER_ITEM *oldItems = infoPtr->items;
 829
 830         infoPtr->uNumItem++;
 831         infoPtr->items = COMCTL32_Alloc (sizeof (HEADER_ITEM) * infoPtr->uNumItem);
 832         /* pre insert copy */
 833         if (nItem > 0) {
 834             memcpy (&infoPtr->items[0], &oldItems[0],
 835                     nItem * sizeof(HEADER_ITEM));
 836         }
 837
 838         /* post insert copy */
 839         if (nItem < infoPtr->uNumItem - 1) {
 840             memcpy (&infoPtr->items[nItem+1], &oldItems[nItem],
 841                     (infoPtr->uNumItem - nItem) * sizeof(HEADER_ITEM));
 842         }
 843
 844         COMCTL32_Free (oldItems);
 845     }
 846
 847     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
 848     lpItem->bDown = FALSE;
 849
 850     if (phdi->mask & HDI_WIDTH)
 851         lpItem->cxy = phdi->cxy;
 852
 853     if (phdi->mask & HDI_TEXT) {
 854         if (!phdi->pszText) /* null pointer check */
 855         {
 856             lpItem->pszText = COMCTL32_Alloc(sizeof(WCHAR));
 857             lstrcpyAtoW(lpItem->pszText, "");
 858         }
 859         else if (phdi->pszText != LPSTR_TEXTCALLBACKW) {
 860             len = lstrlenW (phdi->pszText);
 861             lpItem->pszText = COMCTL32_Alloc ((len+1)*sizeof(WCHAR));
 862             lstrcpyW (lpItem->pszText, phdi->pszText);
 863         }
 864         else
 865             lpItem->pszText = LPSTR_TEXTCALLBACKW;
 866     }
 867
 868     if (phdi->mask & HDI_FORMAT)
 869         lpItem->fmt = phdi->fmt;
 870
 871     if (lpItem->fmt == 0)
 872         lpItem->fmt = HDF_LEFT;
 873
 874     if (phdi->mask & HDI_BITMAP)
 875         lpItem->hbm = phdi->hbm;
 876
 877     if (phdi->mask & HDI_LPARAM)
 878         lpItem->lParam = phdi->lParam;
 879
 880     if (phdi->mask & HDI_IMAGE)
 881         lpItem->iImage = phdi->iImage;
 882
 883     if (phdi->mask & HDI_ORDER)
 884         lpItem->iOrder = phdi->iOrder;
 885
 886     HEADER_SetItemBounds (hwnd);
 887
 888     hdc = GetDC (hwnd);
 889     HEADER_Refresh (hwnd, hdc);
 890     ReleaseDC (hwnd, hdc);
 891
 892     return nItem;
 893 }
 894
 895
 896 static LRESULT
 897 HEADER_Layout (HWND hwnd, WPARAM wParam, LPARAM lParam)
 898 {
 899     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 900     LPHDLAYOUT lpLayout = (LPHDLAYOUT)lParam;
 901
 902     lpLayout->pwpos->hwnd = hwnd;
 903     lpLayout->pwpos->hwndInsertAfter = 0;
 904     lpLayout->pwpos->x = lpLayout->prc->left;
 905     lpLayout->pwpos->y = lpLayout->prc->top;
 906     lpLayout->pwpos->cx = lpLayout->prc->right - lpLayout->prc->left;
 907     if (GetWindowLongA (hwnd, GWL_STYLE) & HDS_HIDDEN)
 908         lpLayout->pwpos->cy = 0;
 909     else
 910         lpLayout->pwpos->cy = infoPtr->nHeight;
 911     lpLayout->pwpos->flags = SWP_NOZORDER;
 912
 913     TRACE (header, "Layout x=%d y=%d cx=%d cy=%d\n",
 914            lpLayout->pwpos->x, lpLayout->pwpos->y,
 915            lpLayout->pwpos->cx, lpLayout->pwpos->cy);
 916
 917     HEADER_ForceItemBounds (hwnd, lpLayout->pwpos->cy);
 918
 919     /* hack */
 920 #ifdef __HDM_LAYOUT_HACK__
 921     MoveWindow (lpLayout->pwpos->hwnd, lpLayout->pwpos->x, lpLayout->pwpos->y,
 922                   lpLayout->pwpos->cx, lpLayout->pwpos->cy, TRUE);
 923 #endif
 924
 925     return TRUE;
 926 }
 927
 928
 929 static LRESULT
 930 HEADER_SetImageList (HWND hwnd, WPARAM wParam, LPARAM lParam)
 931 {
 932     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 933     HIMAGELIST himlOld;
 934
 935     himlOld = infoPtr->himl;
 936     infoPtr->himl = (HIMAGELIST)lParam;
 937
 938     /* FIXME: Refresh needed??? */
 939
 940     return (LRESULT)himlOld;
 941 }
 942
 943
 944 static LRESULT
 945 HEADER_SetItemA (HWND hwnd, WPARAM wParam, LPARAM lParam)
 946 {
 947     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
 948     HDITEMA *phdi = (HDITEMA*)lParam;
 949     INT nItem = (INT)wParam;
 950     HEADER_ITEM *lpItem;
 951     HDC hdc;
 952
 953     if (phdi == NULL)
 954         return FALSE;
 955     if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
 956         return FALSE;
 957
 958     TRACE (header, "[nItem=%d]\n", nItem);
 959
 960     if (HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGINGA, nItem))
 961         return FALSE;
 962
 963     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
 964     if (phdi->mask & HDI_BITMAP)
 965         lpItem->hbm = phdi->hbm;
 966
 967     if (phdi->mask & HDI_FORMAT)
 968         lpItem->fmt = phdi->fmt;
 969
 970     if (phdi->mask & HDI_LPARAM)
 971         lpItem->lParam = phdi->lParam;
 972
 973     if (phdi->mask & HDI_TEXT) {
 974         if (phdi->pszText != LPSTR_TEXTCALLBACKA) {
 975             if (lpItem->pszText) {
 976                 COMCTL32_Free (lpItem->pszText);
 977                 lpItem->pszText = NULL;
 978             }
 979             if (phdi->pszText) {
 980                 INT len = lstrlenA (phdi->pszText);
 981                 lpItem->pszText = COMCTL32_Alloc ((len+1)*sizeof(WCHAR));
 982                 lstrcpyAtoW (lpItem->pszText, phdi->pszText);
 983             }
 984         }
 985         else
 986             lpItem->pszText = LPSTR_TEXTCALLBACKW;
 987     }
 988
 989     if (phdi->mask & HDI_WIDTH)
 990         lpItem->cxy = phdi->cxy;
 991
 992     if (phdi->mask & HDI_IMAGE)
 993         lpItem->iImage = phdi->iImage;
 994
 995     if (phdi->mask & HDI_ORDER)
 996         lpItem->iOrder = phdi->iOrder;
 997
 998     HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGEDA, nItem);
 999
1000     HEADER_SetItemBounds (hwnd);
1001     hdc = GetDC (hwnd);
1002     HEADER_Refresh (hwnd, hdc);
1003     ReleaseDC (hwnd, hdc);
1004
1005     return TRUE;
1006 }
1007
1008
1009 static LRESULT
1010 HEADER_SetItemW (HWND hwnd, WPARAM wParam, LPARAM lParam)
1011 {
1012     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1013     HDITEMW *phdi = (HDITEMW*)lParam;
1014     INT nItem = (INT)wParam;
1015     HEADER_ITEM *lpItem;
1016     HDC hdc;
1017
1018     if (phdi == NULL)
1019         return FALSE;
1020     if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
1021         return FALSE;
1022
1023     TRACE (header, "[nItem=%d]\n", nItem);
1024
1025     if (HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGINGA, nItem))
1026         return FALSE;
1027
1028     lpItem = (HEADER_ITEM*)&infoPtr->items[nItem];
1029     if (phdi->mask & HDI_BITMAP)
1030         lpItem->hbm = phdi->hbm;
1031
1032     if (phdi->mask & HDI_FORMAT)
1033         lpItem->fmt = phdi->fmt;
1034
1035     if (phdi->mask & HDI_LPARAM)
1036         lpItem->lParam = phdi->lParam;
1037
1038     if (phdi->mask & HDI_TEXT) {
1039         if (phdi->pszText != LPSTR_TEXTCALLBACKW) {
1040             if (lpItem->pszText) {
1041                 COMCTL32_Free (lpItem->pszText);
1042                 lpItem->pszText = NULL;
1043             }
1044             if (phdi->pszText) {
1045                 INT len = lstrlenW (phdi->pszText);
1046                 lpItem->pszText = COMCTL32_Alloc ((len+1)*sizeof(WCHAR));
1047                 lstrcpyW (lpItem->pszText, phdi->pszText);
1048             }
1049         }
1050         else
1051             lpItem->pszText = LPSTR_TEXTCALLBACKW;
1052     }
1053
1054     if (phdi->mask & HDI_WIDTH)
1055         lpItem->cxy = phdi->cxy;
1056
1057     if (phdi->mask & HDI_IMAGE)
1058         lpItem->iImage = phdi->iImage;
1059
1060     if (phdi->mask & HDI_ORDER)
1061         lpItem->iOrder = phdi->iOrder;
1062
1063     HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGEDA, nItem);
1064
1065     HEADER_SetItemBounds (hwnd);
1066     hdc = GetDC (hwnd);
1067     HEADER_Refresh (hwnd, hdc);
1068     ReleaseDC (hwnd, hdc);
1069
1070     return TRUE;
1071 }
1072
1073
1074 /* << HEADER_SetOrderArray >> */
1075
1076
1077 __inline__ static LRESULT
1078 HEADER_SetUnicodeFormat (HWND hwnd, WPARAM wParam)
1079 {
1080     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1081     BOOL bTemp = infoPtr->bUnicode;
1082
1083     infoPtr->bUnicode = (BOOL)wParam;
1084
1085     return bTemp;
1086 }
1087
1088
1089 static LRESULT
1090 HEADER_Create (HWND hwnd, WPARAM wParam, LPARAM lParam)
1091 {
1092     HEADER_INFO *infoPtr;
1093     TEXTMETRICA tm;
1094     HFONT hOldFont;
1095     HDC   hdc;
1096
1097     infoPtr = (HEADER_INFO *)COMCTL32_Alloc (sizeof(HEADER_INFO));
1098     SetWindowLongA (hwnd, 0, (DWORD)infoPtr);
1099
1100     infoPtr->uNumItem = 0;
1101     infoPtr->nHeight = 20;
1102     infoPtr->hFont = 0;
1103     infoPtr->items = 0;
1104     infoPtr->hcurArrow = LoadCursorA (0, IDC_ARROWA);
1105     infoPtr->hcurDivider = LoadCursorA (0, IDC_SIZEWEA);
1106     infoPtr->hcurDivopen = LoadCursorA (0, IDC_SIZENSA);
1107     infoPtr->bPressed  = FALSE;
1108     infoPtr->bTracking = FALSE;
1109     infoPtr->iMoveItem = 0;
1110     infoPtr->himl = 0;
1111     infoPtr->iHotItem = -1;
1112     infoPtr->bUnicode = IsWindowUnicode (hwnd);
1113
1114     hdc = GetDC (0);
1115     hOldFont = SelectObject (hdc, GetStockObject (SYSTEM_FONT));
1116     GetTextMetricsA (hdc, &tm);
1117     infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1118     SelectObject (hdc, hOldFont);
1119     ReleaseDC (0, hdc);
1120
1121     return 0;
1122 }
1123
1124
1125 static LRESULT
1126 HEADER_Destroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
1127 {
1128     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1129     HEADER_ITEM *lpItem;
1130     INT nItem;
1131
1132     if (infoPtr->items) {
1133         lpItem = (HEADER_ITEM*)infoPtr->items;
1134         for (nItem = 0; nItem < infoPtr->uNumItem; nItem++, lpItem++) {
1135             if ((lpItem->pszText) && (lpItem->pszText != LPSTR_TEXTCALLBACKW))
1136                 COMCTL32_Free (lpItem->pszText);
1137         }
1138         COMCTL32_Free (infoPtr->items);
1139     }
1140
1141     if (infoPtr->himl)
1142         ImageList_Destroy (infoPtr->himl);
1143
1144     COMCTL32_Free (infoPtr);
1145
1146     return 0;
1147 }
1148
1149
1150 static __inline__ LRESULT
1151 HEADER_GetFont (HWND hwnd)
1152 {
1153     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1154
1155     return (LRESULT)infoPtr->hFont;
1156 }
1157
1158
1159 static LRESULT
1160 HEADER_LButtonDblClk (HWND hwnd, WPARAM wParam, LPARAM lParam)
1161 {
1162     POINT pt;
1163     UINT  flags;
1164     INT   nItem;
1165
1166     pt.x = (INT)LOWORD(lParam);
1167     pt.y = (INT)HIWORD(lParam);
1168     HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1169
1170     if ((GetWindowLongA (hwnd, GWL_STYLE) & HDS_BUTTONS) && (flags == HHT_ONHEADER))
1171         HEADER_SendHeaderNotify (hwnd, HDN_ITEMDBLCLICKA, nItem);
1172     else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN))
1173         HEADER_SendHeaderNotify (hwnd, HDN_DIVIDERDBLCLICKA, nItem);
1174
1175     return 0;
1176 }
1177
1178
1179 static LRESULT
1180 HEADER_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
1181 {
1182     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1183     DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
1184     POINT pt;
1185     UINT  flags;
1186     INT   nItem;
1187     HDC   hdc;
1188
1189     pt.x = (INT)LOWORD(lParam);
1190     pt.y = (INT)HIWORD(lParam);
1191     HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1192
1193     if ((dwStyle & HDS_BUTTONS) && (flags == HHT_ONHEADER)) {
1194         SetCapture (hwnd);
1195         infoPtr->bCaptured = TRUE;
1196         infoPtr->bPressed  = TRUE;
1197         infoPtr->iMoveItem = nItem;
1198
1199         infoPtr->items[nItem].bDown = TRUE;
1200
1201         /* Send WM_CUSTOMDRAW */
1202         hdc = GetDC (hwnd);
1203         HEADER_RefreshItem (hwnd, hdc, nItem);
1204         ReleaseDC (hwnd, hdc);
1205
1206         TRACE (header, "Pressed item %d!\n", nItem);
1207     }
1208     else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN)) {
1209         if (!(HEADER_SendHeaderNotify (hwnd, HDN_BEGINTRACKA, nItem))) {
1210             SetCapture (hwnd);
1211             infoPtr->bCaptured = TRUE;
1212             infoPtr->bTracking = TRUE;
1213             infoPtr->iMoveItem = nItem;
1214             infoPtr->nOldWidth = infoPtr->items[nItem].cxy;
1215             infoPtr->xTrackOffset = infoPtr->items[nItem].rect.right - pt.x;
1216
1217             if (!(dwStyle & HDS_FULLDRAG)) {
1218                 infoPtr->xOldTrack = infoPtr->items[nItem].rect.right;
1219                 hdc = GetDC (hwnd);
1220                 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1221                 ReleaseDC (hwnd, hdc);
1222             }
1223
1224             TRACE (header, "Begin tracking item %d!\n", nItem);
1225         }
1226     }
1227
1228     return 0;
1229 }
1230
1231
1232 static LRESULT
1233 HEADER_LButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1234 {
1235     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1236     DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
1237     POINT pt;
1238     UINT  flags;
1239     INT   nItem, nWidth;
1240     HDC   hdc;
1241
1242     pt.x = (INT)LOWORD(lParam);
1243     pt.y = (INT)HIWORD(lParam);
1244     HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1245
1246     if (infoPtr->bPressed) {
1247         if ((nItem == infoPtr->iMoveItem) && (flags == HHT_ONHEADER)) {
1248             infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1249             hdc = GetDC (hwnd);
1250             HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1251             ReleaseDC (hwnd, hdc);
1252
1253             HEADER_SendClickNotify (hwnd, HDN_ITEMCLICKA, infoPtr->iMoveItem);
1254         }
1255         TRACE (header, "Released item %d!\n", infoPtr->iMoveItem);
1256         infoPtr->bPressed = FALSE;
1257     }
1258     else if (infoPtr->bTracking) {
1259         TRACE (header, "End tracking item %d!\n", infoPtr->iMoveItem);
1260         infoPtr->bTracking = FALSE;
1261
1262         HEADER_SendHeaderNotify (hwnd, HDN_ENDTRACKA, infoPtr->iMoveItem);
1263
1264         if (!(dwStyle & HDS_FULLDRAG)) {
1265             hdc = GetDC (hwnd);
1266             HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1267             ReleaseDC (hwnd, hdc);
1268             if (HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGINGA, infoPtr->iMoveItem))
1269                 infoPtr->items[infoPtr->iMoveItem].cxy = infoPtr->nOldWidth;
1270             else {
1271                 nWidth = pt.x - infoPtr->items[infoPtr->iMoveItem].rect.left + infoPtr->xTrackOffset;
1272                 if (nWidth < 0)
1273                     nWidth = 0;
1274                 infoPtr->items[infoPtr->iMoveItem].cxy = nWidth;
1275                 HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGEDA, infoPtr->iMoveItem);
1276             }
1277
1278             HEADER_SetItemBounds (hwnd);
1279             hdc = GetDC (hwnd);
1280             HEADER_Refresh (hwnd, hdc);
1281             ReleaseDC (hwnd, hdc);
1282         }
1283     }
1284
1285     if (infoPtr->bCaptured) {
1286         infoPtr->bCaptured = FALSE;
1287         ReleaseCapture ();
1288         HEADER_SendSimpleNotify (hwnd, NM_RELEASEDCAPTURE);
1289     }
1290
1291     return 0;
1292 }
1293
1294
1295 static LRESULT
1296 HEADER_MouseMove (HWND hwnd, WPARAM wParam, LPARAM lParam)
1297 {
1298     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1299     DWORD dwStyle = GetWindowLongA (hwnd, GWL_STYLE);
1300     POINT pt;
1301     UINT  flags;
1302     INT   nItem, nWidth;
1303     HDC   hdc;
1304
1305     pt.x = (INT)LOWORD(lParam);
1306     pt.y = (INT)HIWORD(lParam);
1307     HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1308
1309     if ((dwStyle & HDS_BUTTONS) && (dwStyle & HDS_HOTTRACK)) {
1310         if (flags & (HHT_ONHEADER | HHT_ONDIVIDER | HHT_ONDIVOPEN))
1311             infoPtr->iHotItem = nItem;
1312         else
1313             infoPtr->iHotItem = -1;
1314         hdc = GetDC (hwnd);
1315         HEADER_Refresh (hwnd, hdc);
1316         ReleaseDC (hwnd, hdc);
1317     }
1318
1319     if (infoPtr->bCaptured) {
1320         if (infoPtr->bPressed) {
1321             if ((nItem == infoPtr->iMoveItem) && (flags == HHT_ONHEADER))
1322                 infoPtr->items[infoPtr->iMoveItem].bDown = TRUE;
1323             else
1324                 infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1325             hdc = GetDC (hwnd);
1326             HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1327             ReleaseDC (hwnd, hdc);
1328
1329             TRACE (header, "Moving pressed item %d!\n", infoPtr->iMoveItem);
1330         }
1331         else if (infoPtr->bTracking) {
1332             if (dwStyle & HDS_FULLDRAG) {
1333                 if (HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGINGA, infoPtr->iMoveItem))
1334                     infoPtr->items[infoPtr->iMoveItem].cxy = infoPtr->nOldWidth;
1335                 else {
1336                     nWidth = pt.x - infoPtr->items[infoPtr->iMoveItem].rect.left + infoPtr->xTrackOffset;
1337                     if (nWidth < 0)
1338                         nWidth = 0;
1339                     infoPtr->items[infoPtr->iMoveItem].cxy = nWidth;
1340                     HEADER_SendHeaderNotify (hwnd, HDN_ITEMCHANGEDA,
1341                                              infoPtr->iMoveItem);
1342                 }
1343                 HEADER_SetItemBounds (hwnd);
1344                 hdc = GetDC (hwnd);
1345                 HEADER_Refresh (hwnd, hdc);
1346                 ReleaseDC (hwnd, hdc);
1347             }
1348             else {
1349                 hdc = GetDC (hwnd);
1350                 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1351                 infoPtr->xOldTrack = pt.x + infoPtr->xTrackOffset;
1352                 if (infoPtr->xOldTrack < infoPtr->items[infoPtr->iMoveItem].rect.left)
1353                     infoPtr->xOldTrack = infoPtr->items[infoPtr->iMoveItem].rect.left;
1354                 infoPtr->items[infoPtr->iMoveItem].cxy =
1355                     infoPtr->xOldTrack - infoPtr->items[infoPtr->iMoveItem].rect.left;
1356                 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1357                 ReleaseDC (hwnd, hdc);
1358             }
1359
1360             HEADER_SendHeaderNotify (hwnd, HDN_TRACKA, infoPtr->iMoveItem);
1361             TRACE (header, "Tracking item %d!\n", infoPtr->iMoveItem);
1362         }
1363     }
1364
1365     if ((dwStyle & HDS_BUTTONS) && (dwStyle & HDS_HOTTRACK)) {
1366         FIXME (header, "hot track support!\n");
1367     }
1368
1369     return 0;
1370 }
1371
1372
1373 static LRESULT
1374 HEADER_Paint (HWND hwnd, WPARAM wParam)
1375 {
1376     HDC hdc;
1377     PAINTSTRUCT ps;
1378
1379     hdc = wParam==0 ? BeginPaint (hwnd, &ps) : (HDC)wParam;
1380     HEADER_Refresh (hwnd, hdc);
1381     if(!wParam)
1382         EndPaint (hwnd, &ps);
1383     return 0;
1384 }
1385
1386
1387 static LRESULT
1388 HEADER_RButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1389 {
1390     return HEADER_SendSimpleNotify (hwnd, NM_RCLICK);
1391 }
1392
1393
1394 static LRESULT
1395 HEADER_SetCursor (HWND hwnd, WPARAM wParam, LPARAM lParam)
1396 {
1397     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1398     POINT pt;
1399     UINT  flags;
1400     INT   nItem;
1401
1402     TRACE (header, "code=0x%X  id=0x%X\n", LOWORD(lParam), HIWORD(lParam));
1403
1404     GetCursorPos (&pt);
1405     ScreenToClient (hwnd, &pt);
1406
1407     HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1408
1409     if (flags == HHT_ONDIVIDER)
1410         SetCursor (infoPtr->hcurDivider);
1411     else if (flags == HHT_ONDIVOPEN)
1412         SetCursor (infoPtr->hcurDivopen);
1413     else
1414         SetCursor (infoPtr->hcurArrow);
1415
1416     return 0;
1417 }
1418
1419
1420 static LRESULT
1421 HEADER_SetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)
1422 {
1423     HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1424     TEXTMETRICA tm;
1425     HFONT hFont, hOldFont;
1426     HDC hdc;
1427
1428     infoPtr->hFont = (HFONT)wParam;
1429
1430     hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
1431
1432     hdc = GetDC (0);
1433     hOldFont = SelectObject (hdc, hFont);
1434     GetTextMetricsA (hdc, &tm);
1435     infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1436     SelectObject (hdc, hOldFont);
1437     ReleaseDC (0, hdc);
1438
1439     if (lParam) {
1440         HEADER_ForceItemBounds (hwnd, infoPtr->nHeight);
1441         hdc = GetDC (hwnd);
1442         HEADER_Refresh (hwnd, hdc);
1443         ReleaseDC (hwnd, hdc);
1444     }
1445
1446     return 0;
1447 }
1448
1449
1450 LRESULT WINAPI
1451 HEADER_WindowProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
1452 {
1453     switch (msg) {
1454         case HDM_CREATEDRAGIMAGE:
1455             return HEADER_CreateDragImage (hwnd, wParam);
1456
1457         case HDM_DELETEITEM:
1458             return HEADER_DeleteItem (hwnd, wParam);
1459
1460         case HDM_GETIMAGELIST:
1461             return HEADER_GetImageList (hwnd);
1462
1463         case HDM_GETITEMA:
1464             return HEADER_GetItemA (hwnd, wParam, lParam);
1465
1466         case HDM_GETITEMW:
1467             return HEADER_GetItemW (hwnd, wParam, lParam);
1468
1469         case HDM_GETITEMCOUNT:
1470             return HEADER_GetItemCount (hwnd);
1471
1472         case HDM_GETITEMRECT:
1473             return HEADER_GetItemRect (hwnd, wParam, lParam);
1474
1475 /*      case HDM_GETORDERARRAY: */
1476
1477         case HDM_GETUNICODEFORMAT:
1478             return HEADER_GetUnicodeFormat (hwnd);
1479
1480         case HDM_HITTEST:
1481             return HEADER_HitTest (hwnd, wParam, lParam);
1482
1483         case HDM_INSERTITEMA:
1484             return HEADER_InsertItemA (hwnd, wParam, lParam);
1485
1486         case HDM_INSERTITEMW:
1487             return HEADER_InsertItemW (hwnd, wParam, lParam);
1488
1489         case HDM_LAYOUT:
1490             return HEADER_Layout (hwnd, wParam, lParam);
1491
1492         case HDM_SETIMAGELIST:
1493             return HEADER_SetImageList (hwnd, wParam, lParam);
1494
1495         case HDM_SETITEMA:
1496             return HEADER_SetItemA (hwnd, wParam, lParam);
1497
1498         case HDM_SETITEMW:
1499             return HEADER_SetItemW (hwnd, wParam, lParam);
1500
1501 /*      case HDM_SETORDERARRAY: */
1502
1503         case HDM_SETUNICODEFORMAT:
1504             return HEADER_SetUnicodeFormat (hwnd, wParam);
1505
1506
1507         case WM_CREATE:
1508             return HEADER_Create (hwnd, wParam, lParam);
1509
1510         case WM_DESTROY:
1511             return HEADER_Destroy (hwnd, wParam, lParam);
1512
1513         case WM_ERASEBKGND:
1514             return 1;
1515
1516         case WM_GETDLGCODE:
1517             return DLGC_WANTTAB | DLGC_WANTARROWS;
1518
1519         case WM_GETFONT:
1520             return HEADER_GetFont (hwnd);
1521
1522         case WM_LBUTTONDBLCLK:
1523             return HEADER_LButtonDblClk (hwnd, wParam, lParam);
1524
1525         case WM_LBUTTONDOWN:
1526             return HEADER_LButtonDown (hwnd, wParam, lParam);
1527
1528         case WM_LBUTTONUP:
1529             return HEADER_LButtonUp (hwnd, wParam, lParam);
1530
1531         case WM_MOUSEMOVE:
1532             return HEADER_MouseMove (hwnd, wParam, lParam);
1533
1534 /*      case WM_NOTIFYFORMAT: */
1535
1536         case WM_PAINT:
1537             return HEADER_Paint (hwnd, wParam);
1538
1539         case WM_RBUTTONUP:
1540             return HEADER_RButtonUp (hwnd, wParam, lParam);
1541
1542         case WM_SETCURSOR:
1543             return HEADER_SetCursor (hwnd, wParam, lParam);
1544
1545         case WM_SETFONT:
1546             return HEADER_SetFont (hwnd, wParam, lParam);
1547
1548         default:
1549             if (msg >= WM_USER)
1550                 ERR (header, "unknown msg %04x wp=%04x lp=%08lx\n",
1551                      msg, wParam, lParam );
1552             return DefWindowProcA (hwnd, msg, wParam, lParam);
1553     }
1554     return 0;
1555 }
1556
1557
1558 VOID
1559 HEADER_Register (VOID)
1560 {
1561     WNDCLASSA wndClass;
1562
1563     if (GlobalFindAtomA (WC_HEADERA)) return;
1564
1565     ZeroMemory (&wndClass, sizeof(WNDCLASSA));
1566     wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS;
1567     wndClass.lpfnWndProc   = (WNDPROC)HEADER_WindowProc;
1568     wndClass.cbClsExtra    = 0;
1569     wndClass.cbWndExtra    = sizeof(HEADER_INFO *);
1570     wndClass.hCursor       = LoadCursorA (0, IDC_ARROWA);
1571     wndClass.lpszClassName = WC_HEADERA;
1572
1573     RegisterClassA (&wndClass);
1574 }
1575
1576
1577 VOID
1578 HEADER_Unregister (VOID)
1579 {
1580     if (GlobalFindAtomA (WC_HEADERA))
1581         UnregisterClassA (WC_HEADERA, (HINSTANCE)NULL);
1582 }
1583