4 * Copyright 1998 Eric Kohl
5 * Copyright 2000 Eric Kohl for CodeWeavers
6 * Copyright 2003 Maxime Bellenge
7 * Copyright 2006 Mikolaj Zalewski
9 * This library is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
14 * This library is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this library; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
24 * - Imagelist support (completed?)
25 * - Hottrack support (completed?)
26 * - Filters support (HDS_FILTER, HDI_FILTER, HDM_*FILTER*, HDN_*FILTER*)
27 * - New Windows Vista features
36 #include "wine/unicode.h"
42 #include "imagelist.h"
45 #include "wine/debug.h"
47 WINE_DEFAULT_DEBUG_CHANNEL(header);
57 INT iOrder; /* see documentation of HD_ITEM */
59 BOOL bDown; /* is item pressed? (used for drawing) */
60 RECT rect; /* bounding rectangle of the item */
61 DWORD callbackMask; /* HDI_* flags for items that are callback */
67 HWND hwndNotify; /* Owner window to send notifications to */
68 INT nNotifyFormat; /* format used for WM_NOTIFY messages */
69 UINT uNumItem; /* number of items (columns) */
70 INT nHeight; /* height of the header (pixels) */
71 HFONT hFont; /* handle to the current font */
72 HCURSOR hcurArrow; /* handle to the arrow cursor */
73 HCURSOR hcurDivider; /* handle to a cursor (used over dividers) <-|-> */
74 HCURSOR hcurDivopen; /* handle to a cursor (used over dividers) <-||-> */
75 BOOL bCaptured; /* Is the mouse captured? */
76 BOOL bPressed; /* Is a header item pressed (down)? */
77 BOOL bDragging; /* Are we dragging an item? */
78 BOOL bTracking; /* Is in tracking mode? */
79 POINT ptLButtonDown; /* The point where the left button was pressed */
80 INT iMoveItem; /* index of tracked item. (Tracking mode) */
81 INT xTrackOffset; /* distance between the right side of the tracked item and the cursor */
82 INT xOldTrack; /* track offset (see above) after the last WM_MOUSEMOVE */
83 INT iHotItem; /* index of hot item (cursor is over this item) */
84 INT iHotDivider; /* index of the hot divider (used while dragging an item or by HDM_SETHOTDIVIDER) */
85 INT iMargin; /* width of the margin that surrounds a bitmap */
87 HIMAGELIST himl; /* handle to an image list (may be 0) */
88 HEADER_ITEM *items; /* pointer to array of HEADER_ITEM's */
89 INT *order; /* array of item IDs indexed by order */
90 BOOL bRectsValid; /* validity flag for bounding rectangles */
95 #define DIVIDER_WIDTH 10
96 #define HOT_DIVIDER_WIDTH 2
97 #define MAX_HEADER_TEXT_LEN 260
98 #define HDN_UNICODE_OFFSET 20
99 #define HDN_FIRST_UNICODE (HDN_FIRST-HDN_UNICODE_OFFSET)
101 #define HDI_SUPPORTED_FIELDS (HDI_WIDTH|HDI_TEXT|HDI_FORMAT|HDI_LPARAM|HDI_BITMAP|HDI_IMAGE|HDI_ORDER)
102 #define HDI_UNSUPPORTED_FIELDS (HDI_FILTER)
103 #define HDI_UNKNOWN_FIELDS (~(HDI_SUPPORTED_FIELDS|HDI_UNSUPPORTED_FIELDS|HDI_DI_SETITEM))
104 #define HDI_COMCTL32_4_0_FIELDS (HDI_WIDTH|HDI_TEXT|HDI_FORMAT|HDI_LPARAM|HDI_BITMAP)
106 #define HEADER_GetInfoPtr(hwnd) ((HEADER_INFO *)GetWindowLongPtrW(hwnd,0))
108 static BOOL HEADER_PrepareCallbackItems(HWND hwnd, INT iItem, INT reqMask);
109 static void HEADER_FreeCallbackItems(HEADER_ITEM *lpItem);
110 static LRESULT HEADER_SendNotify(HWND hwnd, UINT code, NMHDR *hdr);
111 static LRESULT HEADER_SendCtrlCustomDraw(HWND hwnd, DWORD dwDrawStage, HDC hdc, RECT *rect);
113 static const WCHAR themeClass[] = {'H','e','a','d','e','r',0};
114 static WCHAR emptyString[] = {0};
116 static void HEADER_DisposeItem(HEADER_ITEM *lpItem)
120 Free(lpItem->pszText);
124 static void HEADER_StoreHDItemInHeader(HEADER_ITEM *lpItem, UINT mask, HDITEMW *phdi, BOOL fUnicode)
126 if (mask & HDI_UNSUPPORTED_FIELDS)
127 FIXME("unsupported header fields %x\n", (mask & HDI_UNSUPPORTED_FIELDS));
129 if (mask & HDI_BITMAP)
130 lpItem->hbm = phdi->hbm;
132 if (mask & HDI_FORMAT)
133 lpItem->fmt = phdi->fmt;
135 if (mask & HDI_LPARAM)
136 lpItem->lParam = phdi->lParam;
138 if (mask & HDI_WIDTH)
139 lpItem->cxy = phdi->cxy;
141 if (mask & HDI_IMAGE)
143 lpItem->iImage = phdi->iImage;
144 if (phdi->iImage == I_IMAGECALLBACK)
145 lpItem->callbackMask |= HDI_IMAGE;
147 lpItem->callbackMask &= ~HDI_IMAGE;
154 Free(lpItem->pszText);
155 lpItem->pszText = NULL;
158 if (phdi->pszText != LPSTR_TEXTCALLBACKW) /* covers != TEXTCALLBACKA too */
160 LPWSTR pszText = (phdi->pszText != NULL ? phdi->pszText : emptyString);
162 Str_SetPtrW(&lpItem->pszText, pszText);
164 Str_SetPtrAtoW(&lpItem->pszText, (LPSTR)pszText);
165 lpItem->callbackMask &= ~HDI_TEXT;
169 lpItem->pszText = NULL;
170 lpItem->callbackMask |= HDI_TEXT;
175 inline static LRESULT
176 HEADER_IndexToOrder (HWND hwnd, INT iItem)
178 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
179 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
180 return lpItem->iOrder;
185 HEADER_OrderToIndex(HWND hwnd, WPARAM wParam)
187 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
188 INT iorder = (INT)wParam;
190 if ((iorder <0) || iorder >= infoPtr->uNumItem)
192 return infoPtr->order[iorder];
196 HEADER_ChangeItemOrder(HEADER_INFO *infoPtr, INT iItem, INT iNewOrder)
198 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
201 TRACE("%d: %d->%d\n", iItem, lpItem->iOrder, iNewOrder);
202 if (lpItem->iOrder < iNewOrder)
204 memmove(&infoPtr->order[lpItem->iOrder],
205 &infoPtr->order[lpItem->iOrder + 1],
206 (iNewOrder - lpItem->iOrder) * sizeof(INT));
208 if (iNewOrder < lpItem->iOrder)
210 memmove(&infoPtr->order[iNewOrder + 1],
211 &infoPtr->order[iNewOrder],
212 (lpItem->iOrder - iNewOrder) * sizeof(INT));
214 infoPtr->order[iNewOrder] = iItem;
215 nMin = min(lpItem->iOrder, iNewOrder);
216 nMax = max(lpItem->iOrder, iNewOrder);
217 for (i = nMin; i <= nMax; i++)
218 infoPtr->items[infoPtr->order[i]].iOrder = i;
221 /* Note: if iItem is the last item then this function returns infoPtr->uNumItem */
223 HEADER_NextItem(HWND hwnd, INT iItem)
225 return HEADER_OrderToIndex(hwnd, HEADER_IndexToOrder(hwnd, iItem)+1);
229 HEADER_PrevItem(HWND hwnd, INT iItem)
231 return HEADER_OrderToIndex(hwnd, HEADER_IndexToOrder(hwnd, iItem)-1);
235 HEADER_SetItemBounds (HWND hwnd)
237 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
243 infoPtr->bRectsValid = TRUE;
245 if (infoPtr->uNumItem == 0)
248 GetClientRect (hwnd, &rect);
251 for (i = 0; i < infoPtr->uNumItem; i++) {
252 phdi = &infoPtr->items[HEADER_OrderToIndex(hwnd,i)];
253 phdi->rect.top = rect.top;
254 phdi->rect.bottom = rect.bottom;
256 phdi->rect.right = phdi->rect.left + ((phdi->cxy>0)?phdi->cxy:0);
257 x = phdi->rect.right;
262 HEADER_Size (HWND hwnd, WPARAM wParam)
264 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
266 infoPtr->bRectsValid = FALSE;
271 static void HEADER_GetHotDividerRect(HWND hwnd, HEADER_INFO *infoPtr, RECT *r)
273 INT iDivider = infoPtr->iHotDivider;
274 if (infoPtr->uNumItem > 0)
278 if (iDivider < infoPtr->uNumItem)
280 lpItem = &infoPtr->items[iDivider];
281 r->left = lpItem->rect.left - HOT_DIVIDER_WIDTH/2;
282 r->right = lpItem->rect.left + HOT_DIVIDER_WIDTH/2;
286 lpItem = &infoPtr->items[HEADER_OrderToIndex(hwnd, infoPtr->uNumItem-1)];
287 r->left = lpItem->rect.right - HOT_DIVIDER_WIDTH/2;
288 r->right = lpItem->rect.right + HOT_DIVIDER_WIDTH/2;
290 r->top = lpItem->rect.top;
291 r->bottom = lpItem->rect.bottom;
296 GetClientRect(hwnd, &clientRect);
298 r->right = r->left + HOT_DIVIDER_WIDTH/2;
304 HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack, LRESULT lCDFlags)
306 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
307 HEADER_ITEM *phdi = &infoPtr->items[iItem];
310 HTHEME theme = GetWindowTheme (hwnd);
313 TRACE("DrawItem(iItem %d bHotTrack %d unicode flag %d)\n", iItem, bHotTrack, (infoPtr->nNotifyFormat == NFR_UNICODE));
316 if (r.right - r.left == 0)
317 return phdi->rect.right;
319 /* Set the colors before sending NM_CUSTOMDRAW so that it can change them */
320 SetTextColor(hdc, (bHotTrack && !theme) ? COLOR_HIGHLIGHT : COLOR_BTNTEXT);
321 SetBkColor(hdc, GetSysColor(COLOR_3DFACE));
323 if (lCDFlags & CDRF_NOTIFYITEMDRAW && !(phdi->fmt & HDF_OWNERDRAW))
325 LRESULT lCDItemFlags;
327 nmcd.dwDrawStage = CDDS_PREPAINT | CDDS_ITEM;
329 nmcd.dwItemSpec = iItem;
331 nmcd.uItemState = phdi->bDown ? CDIS_SELECTED : 0;
332 nmcd.lItemlParam = phdi->lParam;
334 lCDItemFlags = HEADER_SendNotify(hwnd, NM_CUSTOMDRAW, (NMHDR *)&nmcd);
335 if (lCDItemFlags & CDRF_SKIPDEFAULT)
336 return phdi->rect.right;
340 int state = (phdi->bDown) ? HIS_PRESSED :
341 (bHotTrack ? HIS_HOT : HIS_NORMAL);
342 DrawThemeBackground (theme, hdc, HP_HEADERITEM, state,
344 GetThemeBackgroundContentRect (theme, hdc, HP_HEADERITEM, state,
350 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS) {
352 DrawEdge (hdc, &r, BDR_RAISEDOUTER,
353 BF_RECT | BF_FLAT | BF_MIDDLE | BF_ADJUST);
356 DrawEdge (hdc, &r, EDGE_RAISED,
357 BF_RECT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
360 DrawEdge (hdc, &r, EDGE_ETCHED, BF_BOTTOM | BF_RIGHT | BF_ADJUST);
362 hbr = CreateSolidBrush(GetBkColor(hdc));
363 FillRect(hdc, &r, hbr);
371 if (phdi->fmt & HDF_OWNERDRAW) {
374 dis.CtlType = ODT_HEADER;
375 dis.CtlID = GetWindowLongPtrW (hwnd, GWLP_ID);
377 dis.itemAction = ODA_DRAWENTIRE;
378 dis.itemState = phdi->bDown ? ODS_SELECTED : 0;
381 dis.rcItem = phdi->rect;
382 dis.itemData = phdi->lParam;
383 oldBkMode = SetBkMode(hdc, TRANSPARENT);
384 SendMessageW (infoPtr->hwndNotify, WM_DRAWITEM,
385 (WPARAM)dis.CtlID, (LPARAM)&dis);
386 if (oldBkMode != TRANSPARENT)
387 SetBkMode(hdc, oldBkMode);
390 UINT rw, rh, /* width and height of r */
391 *x = NULL, *w = NULL; /* x and width of the pic (bmp or img) which is part of cnt */
392 /* cnt,txt,img,bmp */
397 HEADER_PrepareCallbackItems(hwnd, iItem, HDI_TEXT|HDI_IMAGE);
398 cw = tw = iw = bw = 0;
399 rw = r.right - r.left;
400 rh = r.bottom - r.top;
402 if (phdi->fmt & HDF_STRING) {
405 DrawTextW (hdc, phdi->pszText, -1,
406 &textRect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_CALCRECT);
407 cw = textRect.right - textRect.left + 2 * infoPtr->iMargin;
410 if ((phdi->fmt & HDF_IMAGE) && (infoPtr->himl)) {
411 iw = infoPtr->himl->cx + 2 * infoPtr->iMargin;
416 if ((phdi->fmt & HDF_BITMAP) && (phdi->hbm)) {
417 GetObjectW (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
418 bw = bmp.bmWidth + 2 * infoPtr->iMargin;
428 /* align cx using the unclipped cw */
429 if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_LEFT)
431 else if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_CENTER)
432 cx = r.left + rw / 2 - cw / 2;
439 if (cx + cw > r.right)
442 tx = cx + infoPtr->iMargin;
443 /* since cw might have changed we have to recalculate tw */
444 tw = cw - infoPtr->iMargin * 2;
448 if (phdi->fmt & HDF_BITMAP_ON_RIGHT) {
449 /* put pic behind text */
450 *x = cx + tw + infoPtr->iMargin * 3;
452 *x = cx + infoPtr->iMargin;
453 /* move text behind pic */
459 /* since we're done with the layout we can
460 now calculate the position of bmp which
461 has no influence on alignment and layout
463 if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_RIGHT)
464 bx = cx - bw + infoPtr->iMargin;
466 bx = cx + cw + infoPtr->iMargin;
470 HDC hClipDC = GetDC(hwnd);
471 HRGN hClipRgn = CreateRectRgn(r.left, r.top, r.right, r.bottom);
472 SelectClipRgn(hClipDC, hClipRgn);
475 HDC hdcBitmap = CreateCompatibleDC (hClipDC);
476 SelectObject (hdcBitmap, phdi->hbm);
477 BitBlt (hClipDC, bx, r.top + ((INT)rh - bmp.bmHeight) / 2,
478 bmp.bmWidth, bmp.bmHeight, hdcBitmap, 0, 0, SRCCOPY);
479 DeleteDC (hdcBitmap);
483 ImageList_DrawEx (infoPtr->himl, phdi->iImage, hClipDC,
484 ix, r.top + ((INT)rh - infoPtr->himl->cy) / 2,
485 infoPtr->himl->cx, infoPtr->himl->cy, CLR_DEFAULT, CLR_DEFAULT, 0);
488 DeleteObject(hClipRgn);
489 ReleaseDC(hwnd, hClipDC);
492 if (((phdi->fmt & HDF_STRING)
493 || (!(phdi->fmt & (HDF_OWNERDRAW|HDF_STRING|HDF_BITMAP|
494 HDF_BITMAP_ON_RIGHT|HDF_IMAGE)))) /* no explicit format specified? */
495 && (phdi->pszText)) {
496 oldBkMode = SetBkMode(hdc, TRANSPARENT);
499 DrawTextW (hdc, phdi->pszText, -1,
500 &r, DT_LEFT|DT_END_ELLIPSIS|DT_VCENTER|DT_SINGLELINE);
501 if (oldBkMode != TRANSPARENT)
502 SetBkMode(hdc, oldBkMode);
504 HEADER_FreeCallbackItems(phdi);
507 return phdi->rect.right;
511 HEADER_DrawHotDivider(HWND hwnd, HDC hdc)
513 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
517 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
518 brush = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
519 FillRect(hdc, &r, brush);
524 HEADER_Refresh (HWND hwnd, HDC hdc)
526 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
527 HFONT hFont, hOldFont;
533 HTHEME theme = GetWindowTheme (hwnd);
535 if (!infoPtr->bRectsValid)
536 HEADER_SetItemBounds(hwnd);
538 /* get rect for the bar, adjusted for the border */
539 GetClientRect (hwnd, &rect);
540 lCDFlags = HEADER_SendCtrlCustomDraw(hwnd, CDDS_PREPAINT, hdc, &rect);
542 if (infoPtr->bDragging)
543 ImageList_DragShowNolock(FALSE);
545 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
546 hOldFont = SelectObject (hdc, hFont);
548 /* draw Background */
549 if (infoPtr->uNumItem == 0 && theme == NULL) {
550 hbrBk = GetSysColorBrush(COLOR_3DFACE);
551 FillRect(hdc, &rect, hbrBk);
555 for (i = 0; x <= rect.right && i < infoPtr->uNumItem; i++) {
556 int idx = HEADER_OrderToIndex(hwnd,i);
557 if (RectVisible(hdc, &infoPtr->items[idx].rect))
558 HEADER_DrawItem(hwnd, hdc, idx, infoPtr->iHotItem == idx, lCDFlags);
559 x = infoPtr->items[idx].rect.right;
564 if ((x <= rect.right) && RectVisible(hdc, &rcRest) && (infoPtr->uNumItem > 0)) {
566 DrawThemeBackground(theme, hdc, HP_HEADERITEM, HIS_NORMAL, &rcRest, NULL);
569 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS)
570 DrawEdge (hdc, &rcRest, EDGE_RAISED, BF_TOP|BF_LEFT|BF_BOTTOM|BF_SOFT|BF_MIDDLE);
572 DrawEdge (hdc, &rcRest, EDGE_ETCHED, BF_BOTTOM|BF_MIDDLE);
576 if (infoPtr->iHotDivider != -1)
577 HEADER_DrawHotDivider(hwnd, hdc);
579 if (infoPtr->bDragging)
580 ImageList_DragShowNolock(TRUE);
581 SelectObject (hdc, hOldFont);
583 if (lCDFlags & CDRF_NOTIFYPOSTPAINT)
584 HEADER_SendCtrlCustomDraw(hwnd, CDDS_POSTPAINT, hdc, &rect);
589 HEADER_RefreshItem (HWND hwnd, HDC hdc, INT iItem)
591 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
593 if (!infoPtr->bRectsValid)
594 HEADER_SetItemBounds(hwnd);
596 InvalidateRect(hwnd, &infoPtr->items[iItem].rect, FALSE);
601 HEADER_InternalHitTest (HWND hwnd, LPPOINT lpPt, UINT *pFlags, INT *pItem)
603 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
609 GetClientRect (hwnd, &rect);
613 if (PtInRect (&rect, *lpPt))
615 if (infoPtr->uNumItem == 0) {
616 *pFlags |= HHT_NOWHERE;
622 /* somewhere inside */
623 for (iCount = 0; iCount < infoPtr->uNumItem; iCount++) {
624 rect = infoPtr->items[iCount].rect;
625 width = rect.right - rect.left;
630 if (PtInRect (&rect, *lpPt)) {
631 if (width <= 2 * DIVIDER_WIDTH) {
632 *pFlags |= HHT_ONHEADER;
634 TRACE("ON HEADER %d\n", iCount);
637 if (HEADER_IndexToOrder(hwnd, iCount) > 0) {
639 rcTest.right = rcTest.left + DIVIDER_WIDTH;
640 if (PtInRect (&rcTest, *lpPt)) {
642 *pFlags |= HHT_ONDIVOPEN;
643 *pItem = HEADER_PrevItem(hwnd, iCount);
644 TRACE("ON DIVOPEN %d\n", *pItem);
648 *pFlags |= HHT_ONDIVIDER;
649 *pItem = HEADER_PrevItem(hwnd, iCount);
650 TRACE("ON DIVIDER %d\n", *pItem);
656 rcTest.left = rcTest.right - DIVIDER_WIDTH;
657 if (PtInRect (&rcTest, *lpPt)) {
658 *pFlags |= HHT_ONDIVIDER;
660 TRACE("ON DIVIDER %d\n", *pItem);
664 *pFlags |= HHT_ONHEADER;
666 TRACE("ON HEADER %d\n", iCount);
671 /* check for last divider part (on nowhere) */
672 rect = infoPtr->items[infoPtr->uNumItem-1].rect;
673 rect.left = rect.right;
674 rect.right += DIVIDER_WIDTH;
675 if (PtInRect (&rect, *lpPt)) {
677 *pFlags |= HHT_ONDIVOPEN;
678 *pItem = infoPtr->uNumItem - 1;
679 TRACE("ON DIVOPEN %d\n", *pItem);
683 *pFlags |= HHT_ONDIVIDER;
684 *pItem = infoPtr->uNumItem-1;
685 TRACE("ON DIVIDER %d\n", *pItem);
690 *pFlags |= HHT_NOWHERE;
697 if (lpPt->x < rect.left) {
699 *pFlags |= HHT_TOLEFT;
701 else if (lpPt->x > rect.right) {
703 *pFlags |= HHT_TORIGHT;
706 if (lpPt->y < rect.top) {
708 *pFlags |= HHT_ABOVE;
710 else if (lpPt->y > rect.bottom) {
712 *pFlags |= HHT_BELOW;
717 TRACE("flags=0x%X\n", *pFlags);
723 HEADER_DrawTrackLine (HWND hwnd, HDC hdc, INT x)
729 GetClientRect (hwnd, &rect);
731 hOldPen = SelectObject (hdc, GetStockObject (BLACK_PEN));
732 oldRop = SetROP2 (hdc, R2_XORPEN);
733 MoveToEx (hdc, x, rect.top, NULL);
734 LineTo (hdc, x, rect.bottom);
735 SetROP2 (hdc, oldRop);
736 SelectObject (hdc, hOldPen);
741 * Convert a HDITEM into the correct format (ANSI/Unicode) to send it in a notify
744 * [I] infoPtr : the header that wants to send the notify
745 * [O] dest : The buffer to store the HDITEM for notify. It may be set to a HDITEMA of HDITEMW
746 * [I] src : The source HDITEM. It may be a HDITEMA or HDITEMW
747 * [I] fSourceUnicode : is src a HDITEMW or HDITEMA
748 * [O] ppvScratch : a pointer to a scratch buffer that needs to be freed after
749 * the HDITEM is no longer in use or NULL if none was needed
751 * NOTE: We depend on HDITEMA and HDITEMW having the same structure
753 static void HEADER_CopyHDItemForNotify(HEADER_INFO *infoPtr, HDITEMW *dest,
754 HDITEMW *src, BOOL fSourceUnicode, LPVOID *ppvScratch)
759 if (src->mask & HDI_TEXT && src->pszText != LPSTR_TEXTCALLBACKW) /* covers TEXTCALLBACKA as well */
761 if (fSourceUnicode && infoPtr->nNotifyFormat != NFR_UNICODE)
763 dest->pszText = NULL;
764 Str_SetPtrWtoA((LPSTR *)&dest->pszText, src->pszText);
765 *ppvScratch = dest->pszText;
768 if (!fSourceUnicode && infoPtr->nNotifyFormat == NFR_UNICODE)
770 dest->pszText = NULL;
771 Str_SetPtrAtoW(&dest->pszText, (LPSTR)src->pszText);
772 *ppvScratch = dest->pszText;
777 static UINT HEADER_NotifyCodeWtoA(UINT code)
779 /* we use the fact that all the unicode messages are in HDN_FIRST_UNICODE..HDN_LAST*/
780 if (code >= HDN_LAST && code <= HDN_FIRST_UNICODE)
781 return code + HDN_UNICODE_OFFSET;
787 HEADER_SendNotify(HWND hwnd, UINT code, NMHDR *nmhdr)
789 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
791 nmhdr->hwndFrom = hwnd;
792 nmhdr->idFrom = GetWindowLongPtrW (hwnd, GWLP_ID);
795 return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
796 (WPARAM)nmhdr->idFrom, (LPARAM)nmhdr);
800 HEADER_SendSimpleNotify (HWND hwnd, UINT code)
803 return (BOOL)HEADER_SendNotify(hwnd, code, &nmhdr);
807 HEADER_SendCtrlCustomDraw(HWND hwnd, DWORD dwDrawStage, HDC hdc, RECT *rect)
810 nm.dwDrawStage = dwDrawStage;
817 return HEADER_SendNotify(hwnd, NM_CUSTOMDRAW, (NMHDR *)&nm);
821 HEADER_SendNotifyWithHDItemT(HWND hwnd, UINT code, INT iItem, HDITEMW *lpItem)
823 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
826 if (infoPtr->nNotifyFormat != NFR_UNICODE)
827 code = HEADER_NotifyCodeWtoA(code);
830 nmhdr.pitem = lpItem;
832 return (BOOL)HEADER_SendNotify(hwnd, code, (NMHDR *)&nmhdr);
836 HEADER_SendNotifyWithIntFieldT(HWND hwnd, UINT code, INT iItem, INT mask, INT iValue)
838 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
841 /* copying only the iValue should be ok but to make the code more robust we copy everything */
842 nmitem.cxy = infoPtr->items[iItem].cxy;
843 nmitem.hbm = infoPtr->items[iItem].hbm;
844 nmitem.pszText = NULL;
845 nmitem.cchTextMax = 0;
846 nmitem.fmt = infoPtr->items[iItem].fmt;
847 nmitem.lParam = infoPtr->items[iItem].lParam;
848 nmitem.iOrder = infoPtr->items[iItem].iOrder;
849 nmitem.iImage = infoPtr->items[iItem].iImage;
858 nmitem.iOrder = iValue;
861 ERR("invalid mask value 0x%x\n", iValue);
864 return HEADER_SendNotifyWithHDItemT(hwnd, code, iItem, &nmitem);
868 * Prepare callback items
869 * depends on NMHDDISPINFOW having same structure as NMHDDISPINFOA
870 * (so we handle the two cases only doing a specific cast for pszText).
871 * Checks if any of the required field are callback. If there are sends a
872 * NMHDISPINFO notify to retrieve these items. The items are stored in the
873 * HEADER_ITEM pszText and iImage fields. They should be freed with
874 * HEADER_FreeCallbackItems.
876 * @param hwnd : hwnd header container handler
877 * @param iItem : the header item id
878 * @param reqMask : required fields. If any of them is callback this function will fetch it
880 * @return TRUE on success, else FALSE
883 HEADER_PrepareCallbackItems(HWND hwnd, INT iItem, INT reqMask)
885 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
886 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
887 DWORD mask = reqMask & lpItem->callbackMask;
888 NMHDDISPINFOW dispInfo;
889 void *pvBuffer = NULL;
893 if (mask&HDI_TEXT && lpItem->pszText != NULL)
895 ERR("(): function called without a call to FreeCallbackItems\n");
896 Free(lpItem->pszText);
897 lpItem->pszText = NULL;
900 memset(&dispInfo, 0, sizeof(NMHDDISPINFOW));
901 dispInfo.hdr.hwndFrom = hwnd;
902 dispInfo.hdr.idFrom = GetWindowLongPtrW (hwnd, GWLP_ID);
903 if (infoPtr->nNotifyFormat == NFR_UNICODE)
905 dispInfo.hdr.code = HDN_GETDISPINFOW;
907 pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(WCHAR));
911 dispInfo.hdr.code = HDN_GETDISPINFOA;
913 pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(CHAR));
915 dispInfo.pszText = (LPWSTR)pvBuffer;
916 dispInfo.cchTextMax = (pvBuffer!=NULL?MAX_HEADER_TEXT_LEN:0);
917 dispInfo.iItem = iItem;
918 dispInfo.mask = mask;
919 dispInfo.lParam = lpItem->lParam;
921 TRACE("Sending HDN_GETDISPINFO%c\n", infoPtr->nNotifyFormat == NFR_UNICODE?'W':'A');
922 SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
923 (WPARAM) dispInfo.hdr.idFrom,
926 TRACE("SendMessage returns(mask:0x%x,str:%s,lParam:%p)\n",
928 (infoPtr->nNotifyFormat == NFR_UNICODE ? debugstr_w(dispInfo.pszText) : (LPSTR) dispInfo.pszText),
929 (void*) dispInfo.lParam);
931 if (mask & HDI_IMAGE)
932 lpItem->iImage = dispInfo.iImage;
935 if (infoPtr->nNotifyFormat == NFR_UNICODE)
937 lpItem->pszText = (LPWSTR)pvBuffer;
939 /* the user might have used his own buffer */
940 if (dispInfo.pszText != lpItem->pszText)
941 Str_GetPtrW(dispInfo.pszText, lpItem->pszText, MAX_HEADER_TEXT_LEN);
945 Str_SetPtrAtoW(&lpItem->pszText, (LPSTR)dispInfo.pszText);
950 if (dispInfo.mask & HDI_DI_SETITEM)
952 /* make the items permanent */
953 lpItem->callbackMask &= ~dispInfo.mask;
961 * Free the items that might be allocated with HEADER_PrepareCallbackItems
964 * [I] lpItem : the item to free the data
968 HEADER_FreeCallbackItems(HEADER_ITEM *lpItem)
970 if (lpItem->callbackMask&HDI_TEXT && lpItem->pszText != NULL)
972 Free(lpItem->pszText);
973 lpItem->pszText = NULL;
976 if (lpItem->callbackMask&HDI_IMAGE)
977 lpItem->iImage = I_IMAGECALLBACK;
981 HEADER_CreateDragImage (HWND hwnd, WPARAM wParam)
983 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
986 HBITMAP hMemory, hOldBitmap;
993 if (wParam < 0 || wParam >= infoPtr->uNumItem)
996 if (!infoPtr->bRectsValid)
997 HEADER_SetItemBounds(hwnd);
999 lpItem = &infoPtr->items[wParam];
1000 width = lpItem->rect.right - lpItem->rect.left;
1001 height = lpItem->rect.bottom - lpItem->rect.top;
1003 hDeviceDC = GetDC(NULL);
1004 hMemoryDC = CreateCompatibleDC(hDeviceDC);
1005 hMemory = CreateCompatibleBitmap(hDeviceDC, width, height);
1006 ReleaseDC(NULL, hDeviceDC);
1007 hOldBitmap = SelectObject(hMemoryDC, hMemory);
1008 SetViewportOrgEx(hMemoryDC, -lpItem->rect.left, -lpItem->rect.top, NULL);
1010 GetClientRect(hwnd, &rc);
1011 lCDFlags = HEADER_SendCtrlCustomDraw(hwnd, CDDS_PREPAINT, hMemoryDC, &rc);
1012 HEADER_DrawItem(hwnd, hMemoryDC, wParam, FALSE, lCDFlags);
1013 if (lCDFlags & CDRF_NOTIFYPOSTPAINT)
1014 HEADER_SendCtrlCustomDraw(hwnd, CDDS_POSTPAINT, hMemoryDC, &rc);
1016 hMemory = SelectObject(hMemoryDC, hOldBitmap);
1017 DeleteDC(hMemoryDC);
1019 if (hMemory == NULL) /* if anything failed */
1022 himl = ImageList_Create(width, height, ILC_COLORDDB, 1, 1);
1023 ImageList_Add(himl, hMemory, NULL);
1024 DeleteObject(hMemory);
1025 return (LRESULT)himl;
1029 HEADER_SetHotDivider(HWND hwnd, WPARAM wParam, LPARAM lParam)
1031 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1039 pt.x = (INT)(SHORT)LOWORD(lParam);
1041 HEADER_InternalHitTest (hwnd, &pt, &flags, &iDivider);
1043 if (flags & HHT_TOLEFT)
1045 else if (flags & HHT_NOWHERE || flags & HHT_TORIGHT)
1046 iDivider = infoPtr->uNumItem;
1049 HEADER_ITEM *lpItem = &infoPtr->items[iDivider];
1050 if (pt.x > (lpItem->rect.left+lpItem->rect.right)/2)
1051 iDivider = HEADER_NextItem(hwnd, iDivider);
1055 iDivider = (INT)lParam;
1057 /* Note; wParam==FALSE, lParam==-1 is valid and is used to clear the hot divider */
1058 if (iDivider<-1 || iDivider>(int)infoPtr->uNumItem)
1061 if (iDivider != infoPtr->iHotDivider)
1063 if (infoPtr->iHotDivider != -1)
1065 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
1066 InvalidateRect(hwnd, &r, FALSE);
1068 infoPtr->iHotDivider = iDivider;
1071 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
1072 InvalidateRect(hwnd, &r, FALSE);
1079 HEADER_DeleteItem (HWND hwnd, WPARAM wParam)
1081 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1082 INT iItem = (INT)wParam;
1086 TRACE("[iItem=%d]\n", iItem);
1088 if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
1091 for (i = 0; i < infoPtr->uNumItem; i++)
1092 TRACE("%d: order=%d, iOrder=%d, ->iOrder=%d\n", i, infoPtr->order[i], infoPtr->items[i].iOrder, infoPtr->items[infoPtr->order[i]].iOrder);
1094 iOrder = infoPtr->items[iItem].iOrder;
1095 HEADER_DisposeItem(&infoPtr->items[iItem]);
1097 infoPtr->uNumItem--;
1098 memmove(&infoPtr->items[iItem], &infoPtr->items[iItem + 1],
1099 (infoPtr->uNumItem - iItem) * sizeof(HEADER_ITEM));
1100 memmove(&infoPtr->order[iOrder], &infoPtr->order[iOrder + 1],
1101 (infoPtr->uNumItem - iOrder) * sizeof(INT));
1102 infoPtr->items = ReAlloc(infoPtr->items, sizeof(HEADER_ITEM) * infoPtr->uNumItem);
1103 infoPtr->order = ReAlloc(infoPtr->order, sizeof(INT) * infoPtr->uNumItem);
1105 /* Correct the orders */
1106 for (i = 0; i < infoPtr->uNumItem; i++)
1108 if (infoPtr->order[i] > iItem)
1109 infoPtr->order[i]--;
1111 infoPtr->items[infoPtr->order[i]].iOrder = i;
1113 for (i = 0; i < infoPtr->uNumItem; i++)
1114 TRACE("%d: order=%d, iOrder=%d, ->iOrder=%d\n", i, infoPtr->order[i], infoPtr->items[i].iOrder, infoPtr->items[infoPtr->order[i]].iOrder);
1116 HEADER_SetItemBounds (hwnd);
1117 InvalidateRect(hwnd, NULL, FALSE);
1124 HEADER_GetImageList (HWND hwnd)
1126 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1128 return (LRESULT)infoPtr->himl;
1133 HEADER_GetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
1135 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1136 HEADER_ITEM *lpItem;
1142 TRACE("[nItem=%d]\n", nItem);
1148 if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
1151 if (mask & HDI_UNKNOWN_FIELDS)
1153 TRACE("mask %x contains unknown fields. Using only comctl32 4.0 fields\n", mask);
1154 mask &= HDI_COMCTL32_4_0_FIELDS;
1157 lpItem = &infoPtr->items[nItem];
1158 HEADER_PrepareCallbackItems(hwnd, nItem, mask);
1160 if (mask & HDI_BITMAP)
1161 phdi->hbm = lpItem->hbm;
1163 if (mask & HDI_FORMAT)
1164 phdi->fmt = lpItem->fmt;
1166 if (mask & HDI_WIDTH)
1167 phdi->cxy = lpItem->cxy;
1169 if (mask & HDI_LPARAM)
1170 phdi->lParam = lpItem->lParam;
1172 if (mask & HDI_IMAGE)
1173 phdi->iImage = lpItem->iImage;
1175 if (mask & HDI_ORDER)
1176 phdi->iOrder = lpItem->iOrder;
1178 if (mask & HDI_TEXT)
1181 Str_GetPtrW (lpItem->pszText, phdi->pszText, phdi->cchTextMax);
1183 Str_GetPtrWtoA (lpItem->pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
1186 HEADER_FreeCallbackItems(lpItem);
1191 inline static LRESULT
1192 HEADER_GetItemCount (HWND hwnd)
1194 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1195 return infoPtr->uNumItem;
1200 HEADER_GetItemRect (HWND hwnd, WPARAM wParam, LPARAM lParam)
1202 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1203 INT iItem = (INT)wParam;
1204 LPRECT lpRect = (LPRECT)lParam;
1206 if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
1209 lpRect->left = infoPtr->items[iItem].rect.left;
1210 lpRect->right = infoPtr->items[iItem].rect.right;
1211 lpRect->top = infoPtr->items[iItem].rect.top;
1212 lpRect->bottom = infoPtr->items[iItem].rect.bottom;
1219 HEADER_GetOrderArray(HWND hwnd, WPARAM wParam, LPARAM lParam)
1221 LPINT order = (LPINT) lParam;
1222 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1224 if ((unsigned int)wParam <infoPtr->uNumItem)
1227 memcpy(order, infoPtr->order, infoPtr->uNumItem * sizeof(INT));
1232 HEADER_SetOrderArray(HWND hwnd, WPARAM wParam, LPARAM lParam)
1235 LPINT order = (LPINT) lParam;
1236 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1237 HEADER_ITEM *lpItem;
1239 if ((unsigned int)wParam <infoPtr->uNumItem)
1241 memcpy(infoPtr->order, order, infoPtr->uNumItem * sizeof(INT));
1242 for (i=0; i<(int)wParam; i++)
1244 lpItem = &infoPtr->items[*order++];
1247 infoPtr->bRectsValid=0;
1248 InvalidateRect(hwnd, NULL, FALSE);
1252 inline static LRESULT
1253 HEADER_GetUnicodeFormat (HWND hwnd)
1255 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1256 return (infoPtr->nNotifyFormat == NFR_UNICODE);
1261 HEADER_HitTest (HWND hwnd, WPARAM wParam, LPARAM lParam)
1263 LPHDHITTESTINFO phti = (LPHDHITTESTINFO)lParam;
1265 HEADER_InternalHitTest (hwnd, &phti->pt, &phti->flags, &phti->iItem);
1267 if (phti->flags == HHT_NOWHERE)
1275 HEADER_InsertItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
1277 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1278 HEADER_ITEM *lpItem;
1283 if ((phdi == NULL) || (nItem < 0) || (phdi->mask == 0))
1286 if (nItem > infoPtr->uNumItem)
1287 nItem = infoPtr->uNumItem;
1289 iOrder = (phdi->mask & HDI_ORDER) ? phdi->iOrder : nItem;
1292 else if (infoPtr->uNumItem < iOrder)
1293 iOrder = infoPtr->uNumItem;
1295 infoPtr->uNumItem++;
1296 infoPtr->items = ReAlloc(infoPtr->items, sizeof(HEADER_ITEM) * infoPtr->uNumItem);
1297 infoPtr->order = ReAlloc(infoPtr->order, sizeof(INT) * infoPtr->uNumItem);
1299 /* make space for the new item */
1300 memmove(&infoPtr->items[nItem + 1], &infoPtr->items[nItem],
1301 (infoPtr->uNumItem - nItem - 1) * sizeof(HEADER_ITEM));
1302 memmove(&infoPtr->order[iOrder + 1], &infoPtr->order[iOrder],
1303 (infoPtr->uNumItem - iOrder - 1) * sizeof(INT));
1305 /* update the order array */
1306 infoPtr->order[iOrder] = nItem;
1307 for (i = 0; i < infoPtr->uNumItem; i++)
1309 if (i != iOrder && infoPtr->order[i] >= nItem)
1310 infoPtr->order[i]++;
1311 infoPtr->items[infoPtr->order[i]].iOrder = i;
1314 lpItem = &infoPtr->items[nItem];
1315 ZeroMemory(lpItem, sizeof(HEADER_ITEM));
1316 /* cxy, fmt and lParam are copied even if not in the HDITEM mask */
1317 copyMask = phdi->mask | HDI_WIDTH | HDI_FORMAT | HDI_LPARAM;
1318 HEADER_StoreHDItemInHeader(lpItem, copyMask, phdi, bUnicode);
1319 lpItem->iOrder = iOrder;
1321 /* set automatically some format bits */
1322 if (phdi->mask & HDI_TEXT)
1323 lpItem->fmt |= HDF_STRING;
1325 lpItem->fmt &= ~HDF_STRING;
1327 if (lpItem->hbm != NULL)
1328 lpItem->fmt |= HDF_BITMAP;
1330 lpItem->fmt &= ~HDF_BITMAP;
1332 if (phdi->mask & HDI_IMAGE)
1333 lpItem->fmt |= HDF_IMAGE;
1335 HEADER_SetItemBounds (hwnd);
1336 InvalidateRect(hwnd, NULL, FALSE);
1343 HEADER_Layout (HWND hwnd, WPARAM wParam, LPARAM lParam)
1345 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1346 LPHDLAYOUT lpLayout = (LPHDLAYOUT)lParam;
1348 lpLayout->pwpos->hwnd = hwnd;
1349 lpLayout->pwpos->hwndInsertAfter = 0;
1350 lpLayout->pwpos->x = lpLayout->prc->left;
1351 lpLayout->pwpos->y = lpLayout->prc->top;
1352 lpLayout->pwpos->cx = lpLayout->prc->right - lpLayout->prc->left;
1353 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_HIDDEN)
1354 lpLayout->pwpos->cy = 0;
1356 lpLayout->pwpos->cy = infoPtr->nHeight;
1357 lpLayout->prc->top += infoPtr->nHeight;
1359 lpLayout->pwpos->flags = SWP_NOZORDER;
1361 TRACE("Layout x=%d y=%d cx=%d cy=%d\n",
1362 lpLayout->pwpos->x, lpLayout->pwpos->y,
1363 lpLayout->pwpos->cx, lpLayout->pwpos->cy);
1365 infoPtr->bRectsValid = FALSE;
1372 HEADER_SetImageList (HWND hwnd, HIMAGELIST himl)
1374 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1377 TRACE("(himl %p)\n", himl);
1378 himlOld = infoPtr->himl;
1379 infoPtr->himl = himl;
1381 /* FIXME: Refresh needed??? */
1383 return (LRESULT)himlOld;
1388 HEADER_GetBitmapMargin(HWND hwnd)
1390 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1392 return infoPtr->iMargin;
1396 HEADER_SetBitmapMargin(HWND hwnd, WPARAM wParam)
1398 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1399 INT oldMargin = infoPtr->iMargin;
1401 infoPtr->iMargin = (INT)wParam;
1407 HEADER_SetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
1409 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1410 HEADER_ITEM *lpItem;
1416 if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
1419 TRACE("[nItem=%d]\n", nItem);
1421 HEADER_CopyHDItemForNotify(infoPtr, &hdNotify, phdi, bUnicode, &pvScratch);
1422 if (HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCHANGINGW, nItem, &hdNotify))
1424 if (pvScratch) Free(pvScratch);
1428 lpItem = &infoPtr->items[nItem];
1429 HEADER_StoreHDItemInHeader(lpItem, phdi->mask, phdi, bUnicode);
1431 if (phdi->mask & HDI_ORDER)
1432 if (phdi->iOrder >= 0 && phdi->iOrder < infoPtr->uNumItem)
1433 HEADER_ChangeItemOrder(infoPtr, nItem, phdi->iOrder);
1435 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCHANGEDW, nItem, &hdNotify);
1437 HEADER_SetItemBounds (hwnd);
1439 InvalidateRect(hwnd, NULL, FALSE);
1441 if (pvScratch != NULL)
1446 inline static LRESULT
1447 HEADER_SetUnicodeFormat (HWND hwnd, WPARAM wParam)
1449 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1450 BOOL bTemp = (infoPtr->nNotifyFormat == NFR_UNICODE);
1452 infoPtr->nNotifyFormat = ((BOOL)wParam ? NFR_UNICODE : NFR_ANSI);
1459 HEADER_Create (HWND hwnd, WPARAM wParam, LPARAM lParam)
1461 HEADER_INFO *infoPtr;
1466 infoPtr = (HEADER_INFO *)Alloc (sizeof(HEADER_INFO));
1467 SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1469 infoPtr->hwndNotify = ((LPCREATESTRUCTA)lParam)->hwndParent;
1470 infoPtr->uNumItem = 0;
1474 infoPtr->bRectsValid = FALSE;
1475 infoPtr->hcurArrow = LoadCursorW (0, (LPWSTR)IDC_ARROW);
1476 infoPtr->hcurDivider = LoadCursorW (COMCTL32_hModule, MAKEINTRESOURCEW(IDC_DIVIDER));
1477 infoPtr->hcurDivopen = LoadCursorW (COMCTL32_hModule, MAKEINTRESOURCEW(IDC_DIVIDEROPEN));
1478 infoPtr->bPressed = FALSE;
1479 infoPtr->bTracking = FALSE;
1480 infoPtr->iMoveItem = 0;
1482 infoPtr->iHotItem = -1;
1483 infoPtr->iHotDivider = -1;
1484 infoPtr->iMargin = 3*GetSystemMetrics(SM_CXEDGE);
1485 infoPtr->nNotifyFormat =
1486 SendMessageW (infoPtr->hwndNotify, WM_NOTIFYFORMAT, (WPARAM)hwnd, NF_QUERY);
1489 hOldFont = SelectObject (hdc, GetStockObject (SYSTEM_FONT));
1490 GetTextMetricsW (hdc, &tm);
1491 infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1492 SelectObject (hdc, hOldFont);
1495 OpenThemeData(hwnd, themeClass);
1502 HEADER_Destroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
1504 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1505 HEADER_ITEM *lpItem;
1509 if (infoPtr->items) {
1510 lpItem = infoPtr->items;
1511 for (nItem = 0; nItem < infoPtr->uNumItem; nItem++, lpItem++) {
1512 HEADER_DisposeItem(lpItem);
1514 Free (infoPtr->items);
1518 Free(infoPtr->order);
1521 ImageList_Destroy (infoPtr->himl);
1523 SetWindowLongPtrW (hwnd, 0, 0);
1526 theme = GetWindowTheme(hwnd);
1527 CloseThemeData(theme);
1532 static inline LRESULT
1533 HEADER_GetFont (HWND hwnd)
1535 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1537 return (LRESULT)infoPtr->hFont;
1542 HEADER_IsDragDistance(HEADER_INFO *infoPtr, POINT *pt)
1544 /* Windows allows for a mouse movement before starting the drag. We use the
1545 * SM_CXDOUBLECLICK/SM_CYDOUBLECLICK as that distance.
1547 return (abs(infoPtr->ptLButtonDown.x - pt->x)>GetSystemMetrics(SM_CXDOUBLECLK) ||
1548 abs(infoPtr->ptLButtonDown.y - pt->y)>GetSystemMetrics(SM_CYDOUBLECLK));
1552 HEADER_LButtonDblClk (HWND hwnd, WPARAM wParam, LPARAM lParam)
1558 pt.x = (short)LOWORD(lParam);
1559 pt.y = (short)HIWORD(lParam);
1560 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1562 if ((GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS) && (flags == HHT_ONHEADER))
1563 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMDBLCLICKW, nItem, NULL);
1564 else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN))
1565 HEADER_SendNotifyWithHDItemT(hwnd, HDN_DIVIDERDBLCLICKW, nItem, NULL);
1572 HEADER_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
1574 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1575 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1581 pt.x = (short)LOWORD(lParam);
1582 pt.y = (short)HIWORD(lParam);
1583 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1585 if ((dwStyle & HDS_BUTTONS) && (flags == HHT_ONHEADER)) {
1587 infoPtr->bCaptured = TRUE;
1588 infoPtr->bPressed = TRUE;
1589 infoPtr->bDragging = FALSE;
1590 infoPtr->iMoveItem = nItem;
1591 infoPtr->ptLButtonDown = pt;
1593 infoPtr->items[nItem].bDown = TRUE;
1595 /* Send WM_CUSTOMDRAW */
1597 HEADER_RefreshItem (hwnd, hdc, nItem);
1598 ReleaseDC (hwnd, hdc);
1600 TRACE("Pressed item %d!\n", nItem);
1602 else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN)) {
1603 INT iCurrWidth = infoPtr->items[nItem].cxy;
1604 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_BEGINTRACKW, nItem, HDI_WIDTH, iCurrWidth))
1607 infoPtr->bCaptured = TRUE;
1608 infoPtr->bTracking = TRUE;
1609 infoPtr->iMoveItem = nItem;
1610 infoPtr->xTrackOffset = infoPtr->items[nItem].rect.right - pt.x;
1612 if (!(dwStyle & HDS_FULLDRAG)) {
1613 infoPtr->xOldTrack = infoPtr->items[nItem].rect.right;
1615 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1616 ReleaseDC (hwnd, hdc);
1619 TRACE("Begin tracking item %d!\n", nItem);
1628 HEADER_LButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1630 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1631 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1637 pt.x = (INT)(SHORT)LOWORD(lParam);
1638 pt.y = (INT)(SHORT)HIWORD(lParam);
1639 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1641 if (infoPtr->bPressed) {
1642 if (infoPtr->bDragging)
1644 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1647 ImageList_DragShowNolock(FALSE);
1648 ImageList_EndDrag();
1649 lpItem->bDown=FALSE;
1651 if (infoPtr->iHotDivider == -1)
1653 else if (infoPtr->iHotDivider == infoPtr->uNumItem)
1654 iNewOrder = infoPtr->uNumItem-1;
1657 iNewOrder = HEADER_IndexToOrder(hwnd, infoPtr->iHotDivider);
1658 if (iNewOrder > lpItem->iOrder)
1662 if (iNewOrder != -1 &&
1663 !HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ENDDRAG, infoPtr->iMoveItem, HDI_ORDER, iNewOrder))
1665 HEADER_ChangeItemOrder(infoPtr, infoPtr->iMoveItem, iNewOrder);
1666 infoPtr->bRectsValid = FALSE;
1667 InvalidateRect(hwnd, NULL, FALSE);
1670 InvalidateRect(hwnd, &infoPtr->items[infoPtr->iMoveItem].rect, FALSE);
1672 HEADER_SetHotDivider(hwnd, FALSE, -1);
1674 else if (!(dwStyle&HDS_DRAGDROP) || !HEADER_IsDragDistance(infoPtr, &pt))
1676 infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1678 HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1679 ReleaseDC (hwnd, hdc);
1681 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCLICKW, infoPtr->iMoveItem, NULL);
1684 TRACE("Released item %d!\n", infoPtr->iMoveItem);
1685 infoPtr->bPressed = FALSE;
1687 else if (infoPtr->bTracking) {
1688 INT iNewWidth = pt.x - infoPtr->items[infoPtr->iMoveItem].rect.left + infoPtr->xTrackOffset;
1691 TRACE("End tracking item %d!\n", infoPtr->iMoveItem);
1692 infoPtr->bTracking = FALSE;
1694 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ENDTRACKW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth);
1696 if (!(dwStyle & HDS_FULLDRAG)) {
1698 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1699 ReleaseDC (hwnd, hdc);
1702 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGINGW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth))
1704 infoPtr->items[infoPtr->iMoveItem].cxy = iNewWidth;
1705 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGEDW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth);
1708 HEADER_SetItemBounds (hwnd);
1709 InvalidateRect(hwnd, NULL, TRUE);
1712 if (infoPtr->bCaptured) {
1713 infoPtr->bCaptured = FALSE;
1715 HEADER_SendSimpleNotify (hwnd, NM_RELEASEDCAPTURE);
1723 HEADER_NotifyFormat (HWND hwnd, WPARAM wParam, LPARAM lParam)
1725 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1730 return infoPtr->nNotifyFormat;
1733 infoPtr->nNotifyFormat =
1734 SendMessageW ((HWND)wParam, WM_NOTIFYFORMAT,
1735 (WPARAM)hwnd, (LPARAM)NF_QUERY);
1736 return infoPtr->nNotifyFormat;
1743 HEADER_MouseLeave (HWND hwnd, WPARAM wParam, LPARAM lParam)
1745 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1746 /* Reset hot-tracked item when mouse leaves control. */
1747 INT oldHotItem = infoPtr->iHotItem;
1748 HDC hdc = GetDC (hwnd);
1750 infoPtr->iHotItem = -1;
1751 if (oldHotItem != -1) HEADER_RefreshItem (hwnd, hdc, oldHotItem);
1752 ReleaseDC (hwnd, hdc);
1759 HEADER_MouseMove (HWND hwnd, WPARAM wParam, LPARAM lParam)
1761 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1762 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1767 /* With theming, hottracking is always enabled */
1768 BOOL hotTrackEnabled =
1769 ((dwStyle & HDS_BUTTONS) && (dwStyle & HDS_HOTTRACK))
1770 || (GetWindowTheme (hwnd) != NULL);
1771 INT oldHotItem = infoPtr->iHotItem;
1773 pt.x = (INT)(SHORT)LOWORD(lParam);
1774 pt.y = (INT)(SHORT)HIWORD(lParam);
1775 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1777 if (hotTrackEnabled) {
1778 if (flags & (HHT_ONHEADER | HHT_ONDIVIDER | HHT_ONDIVOPEN))
1779 infoPtr->iHotItem = nItem;
1781 infoPtr->iHotItem = -1;
1784 if (infoPtr->bCaptured) {
1785 /* check if we should drag the header */
1786 if (infoPtr->bPressed && !infoPtr->bDragging && dwStyle&HDS_DRAGDROP
1787 && HEADER_IsDragDistance(infoPtr, &pt))
1789 if (!HEADER_SendNotifyWithHDItemT(hwnd, HDN_BEGINDRAG, infoPtr->iMoveItem, NULL))
1791 HIMAGELIST hDragItem = (HIMAGELIST)HEADER_CreateDragImage(hwnd, infoPtr->iMoveItem);
1792 if (hDragItem != NULL)
1794 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1795 TRACE("Starting item drag\n");
1796 ImageList_BeginDrag(hDragItem, 0, pt.x - lpItem->rect.left, 0);
1797 ImageList_DragShowNolock(TRUE);
1798 ImageList_Destroy(hDragItem);
1799 infoPtr->bDragging = TRUE;
1804 if (infoPtr->bDragging)
1809 ClientToScreen(hwnd, &drag);
1810 ImageList_DragMove(drag.x, drag.y);
1811 HEADER_SetHotDivider(hwnd, TRUE, lParam);
1814 if (infoPtr->bPressed && !infoPtr->bDragging) {
1815 BOOL oldState = infoPtr->items[infoPtr->iMoveItem].bDown;
1816 if ((nItem == infoPtr->iMoveItem) && (flags == HHT_ONHEADER))
1817 infoPtr->items[infoPtr->iMoveItem].bDown = TRUE;
1819 infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1820 if (oldState != infoPtr->items[infoPtr->iMoveItem].bDown) {
1822 HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1823 ReleaseDC (hwnd, hdc);
1826 TRACE("Moving pressed item %d!\n", infoPtr->iMoveItem);
1828 else if (infoPtr->bTracking) {
1829 if (dwStyle & HDS_FULLDRAG) {
1830 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1831 nWidth = pt.x - lpItem->rect.left + infoPtr->xTrackOffset;
1832 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGINGW, infoPtr->iMoveItem, HDI_WIDTH, nWidth))
1834 INT nOldWidth = lpItem->rect.right - lpItem->rect.left;
1838 if (nWidth < 0) nWidth = 0;
1839 infoPtr->items[infoPtr->iMoveItem].cxy = nWidth;
1840 HEADER_SetItemBounds(hwnd);
1842 GetClientRect(hwnd, &rcClient);
1843 rcScroll = rcClient;
1844 rcScroll.left = lpItem->rect.left + nOldWidth;
1845 ScrollWindowEx(hwnd, nWidth - nOldWidth, 0, &rcScroll, &rcClient, NULL, NULL, 0);
1846 InvalidateRect(hwnd, &lpItem->rect, FALSE);
1849 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGEDW, infoPtr->iMoveItem, HDI_WIDTH, nWidth);
1855 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1856 infoPtr->xOldTrack = pt.x + infoPtr->xTrackOffset;
1857 if (infoPtr->xOldTrack < infoPtr->items[infoPtr->iMoveItem].rect.left)
1858 infoPtr->xOldTrack = infoPtr->items[infoPtr->iMoveItem].rect.left;
1859 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1860 ReleaseDC (hwnd, hdc);
1861 iTrackWidth = infoPtr->xOldTrack - infoPtr->items[infoPtr->iMoveItem].rect.left;
1862 /* FIXME: should stop tracking if HDN_TRACK returns TRUE */
1863 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_TRACKW, infoPtr->iMoveItem, HDI_WIDTH, iTrackWidth);
1866 TRACE("Tracking item %d!\n", infoPtr->iMoveItem);
1870 if (hotTrackEnabled) {
1871 TRACKMOUSEEVENT tme;
1872 if (oldHotItem != infoPtr->iHotItem && !infoPtr->bDragging) {
1874 if (oldHotItem != -1) HEADER_RefreshItem (hwnd, hdc, oldHotItem);
1875 if (infoPtr->iHotItem != -1) HEADER_RefreshItem (hwnd, hdc, infoPtr->iHotItem);
1876 ReleaseDC (hwnd, hdc);
1878 tme.cbSize = sizeof( tme );
1879 tme.dwFlags = TME_LEAVE;
1880 tme.hwndTrack = hwnd;
1881 TrackMouseEvent( &tme );
1889 HEADER_Paint (HWND hwnd, WPARAM wParam)
1894 hdc = wParam==0 ? BeginPaint (hwnd, &ps) : (HDC)wParam;
1895 HEADER_Refresh (hwnd, hdc);
1897 EndPaint (hwnd, &ps);
1903 HEADER_RButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1908 pt.x = (short)LOWORD(lParam);
1909 pt.y = (short)HIWORD(lParam);
1911 /* Send a Notify message */
1912 bRet = HEADER_SendSimpleNotify (hwnd, NM_RCLICK);
1914 /* Change to screen coordinate for WM_CONTEXTMENU */
1915 ClientToScreen(hwnd, &pt);
1917 /* Send a WM_CONTEXTMENU message in response to the RBUTTONUP */
1918 SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM) hwnd, MAKELPARAM(pt.x, pt.y));
1925 HEADER_SetCursor (HWND hwnd, WPARAM wParam, LPARAM lParam)
1927 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1932 TRACE("code=0x%X id=0x%X\n", LOWORD(lParam), HIWORD(lParam));
1935 ScreenToClient (hwnd, &pt);
1937 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1939 if (flags == HHT_ONDIVIDER)
1940 SetCursor (infoPtr->hcurDivider);
1941 else if (flags == HHT_ONDIVOPEN)
1942 SetCursor (infoPtr->hcurDivopen);
1944 SetCursor (infoPtr->hcurArrow);
1951 HEADER_SetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)
1953 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1955 HFONT hFont, hOldFont;
1958 infoPtr->hFont = (HFONT)wParam;
1960 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
1963 hOldFont = SelectObject (hdc, hFont);
1964 GetTextMetricsW (hdc, &tm);
1965 infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1966 SelectObject (hdc, hOldFont);
1969 infoPtr->bRectsValid = FALSE;
1972 InvalidateRect(hwnd, NULL, FALSE);
1978 static LRESULT HEADER_SetRedraw(HWND hwnd, WPARAM wParam, LPARAM lParam)
1980 /* ignoring the InvalidateRect calls is handled by user32. But some apps expect
1981 * that we invalidate the header and this has to be done manually */
1984 ret = DefWindowProcW(hwnd, WM_SETREDRAW, wParam, lParam);
1986 InvalidateRect(hwnd, NULL, TRUE);
1990 /* Update the theme handle after a theme change */
1991 static LRESULT HEADER_ThemeChanged(HWND hwnd)
1993 HTHEME theme = GetWindowTheme(hwnd);
1994 CloseThemeData(theme);
1995 OpenThemeData(hwnd, themeClass);
1996 InvalidateRect(hwnd, NULL, FALSE);
2001 static LRESULT WINAPI
2002 HEADER_WindowProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
2004 TRACE("hwnd=%p msg=%x wparam=%x lParam=%lx\n", hwnd, msg, wParam, lParam);
2005 if (!HEADER_GetInfoPtr (hwnd) && (msg != WM_CREATE))
2006 return DefWindowProcW (hwnd, msg, wParam, lParam);
2008 /* case HDM_CLEARFILTER: */
2010 case HDM_CREATEDRAGIMAGE:
2011 return HEADER_CreateDragImage (hwnd, wParam);
2013 case HDM_DELETEITEM:
2014 return HEADER_DeleteItem (hwnd, wParam);
2016 /* case HDM_EDITFILTER: */
2018 case HDM_GETBITMAPMARGIN:
2019 return HEADER_GetBitmapMargin(hwnd);
2021 case HDM_GETIMAGELIST:
2022 return HEADER_GetImageList (hwnd);
2026 return HEADER_GetItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_GETITEMW);
2028 case HDM_GETITEMCOUNT:
2029 return HEADER_GetItemCount (hwnd);
2031 case HDM_GETITEMRECT:
2032 return HEADER_GetItemRect (hwnd, wParam, lParam);
2034 case HDM_GETORDERARRAY:
2035 return HEADER_GetOrderArray(hwnd, wParam, lParam);
2037 case HDM_GETUNICODEFORMAT:
2038 return HEADER_GetUnicodeFormat (hwnd);
2041 return HEADER_HitTest (hwnd, wParam, lParam);
2043 case HDM_INSERTITEMA:
2044 case HDM_INSERTITEMW:
2045 return HEADER_InsertItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_INSERTITEMW);
2048 return HEADER_Layout (hwnd, wParam, lParam);
2050 case HDM_ORDERTOINDEX:
2051 return HEADER_OrderToIndex(hwnd, wParam);
2053 case HDM_SETBITMAPMARGIN:
2054 return HEADER_SetBitmapMargin(hwnd, wParam);
2056 /* case HDM_SETFILTERCHANGETIMEOUT: */
2058 case HDM_SETHOTDIVIDER:
2059 return HEADER_SetHotDivider(hwnd, wParam, lParam);
2061 case HDM_SETIMAGELIST:
2062 return HEADER_SetImageList (hwnd, (HIMAGELIST)lParam);
2066 return HEADER_SetItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_SETITEMW);
2068 case HDM_SETORDERARRAY:
2069 return HEADER_SetOrderArray(hwnd, wParam, lParam);
2071 case HDM_SETUNICODEFORMAT:
2072 return HEADER_SetUnicodeFormat (hwnd, wParam);
2075 return HEADER_Create (hwnd, wParam, lParam);
2078 return HEADER_Destroy (hwnd, wParam, lParam);
2084 return DLGC_WANTTAB | DLGC_WANTARROWS;
2087 return HEADER_GetFont (hwnd);
2089 case WM_LBUTTONDBLCLK:
2090 return HEADER_LButtonDblClk (hwnd, wParam, lParam);
2092 case WM_LBUTTONDOWN:
2093 return HEADER_LButtonDown (hwnd, wParam, lParam);
2096 return HEADER_LButtonUp (hwnd, wParam, lParam);
2099 return HEADER_MouseLeave (hwnd, wParam, lParam);
2102 return HEADER_MouseMove (hwnd, wParam, lParam);
2104 case WM_NOTIFYFORMAT:
2105 return HEADER_NotifyFormat (hwnd, wParam, lParam);
2108 return HEADER_Size (hwnd, wParam);
2110 case WM_THEMECHANGED:
2111 return HEADER_ThemeChanged (hwnd);
2113 case WM_PRINTCLIENT:
2115 return HEADER_Paint (hwnd, wParam);
2118 return HEADER_RButtonUp (hwnd, wParam, lParam);
2121 return HEADER_SetCursor (hwnd, wParam, lParam);
2124 return HEADER_SetFont (hwnd, wParam, lParam);
2127 return HEADER_SetRedraw(hwnd, wParam, lParam);
2130 if ((msg >= WM_USER) && (msg < WM_APP))
2131 ERR("unknown msg %04x wp=%04x lp=%08lx\n",
2132 msg, wParam, lParam );
2133 return DefWindowProcW(hwnd, msg, wParam, lParam);
2139 HEADER_Register (void)
2143 ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2144 wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
2145 wndClass.lpfnWndProc = HEADER_WindowProc;
2146 wndClass.cbClsExtra = 0;
2147 wndClass.cbWndExtra = sizeof(HEADER_INFO *);
2148 wndClass.hCursor = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2149 wndClass.lpszClassName = WC_HEADERW;
2151 RegisterClassW (&wndClass);
2156 HEADER_Unregister (void)
2158 UnregisterClassW (WC_HEADERW, NULL);