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, const RECT *rect);
113 static const WCHAR themeClass[] = {'H','e','a','d','e','r',0};
114 static WCHAR emptyString[] = {0};
116 static void HEADER_StoreHDItemInHeader(HEADER_ITEM *lpItem, UINT mask, const HDITEMW *phdi, BOOL fUnicode)
118 if (mask & HDI_UNSUPPORTED_FIELDS)
119 FIXME("unsupported header fields %x\n", (mask & HDI_UNSUPPORTED_FIELDS));
121 if (mask & HDI_BITMAP)
122 lpItem->hbm = phdi->hbm;
124 if (mask & HDI_FORMAT)
125 lpItem->fmt = phdi->fmt;
127 if (mask & HDI_LPARAM)
128 lpItem->lParam = phdi->lParam;
130 if (mask & HDI_WIDTH)
131 lpItem->cxy = phdi->cxy;
133 if (mask & HDI_IMAGE)
135 lpItem->iImage = phdi->iImage;
136 if (phdi->iImage == I_IMAGECALLBACK)
137 lpItem->callbackMask |= HDI_IMAGE;
139 lpItem->callbackMask &= ~HDI_IMAGE;
144 Free(lpItem->pszText);
145 lpItem->pszText = NULL;
147 if (phdi->pszText != LPSTR_TEXTCALLBACKW) /* covers != TEXTCALLBACKA too */
149 LPWSTR pszText = (phdi->pszText != NULL ? phdi->pszText : emptyString);
151 Str_SetPtrW(&lpItem->pszText, pszText);
153 Str_SetPtrAtoW(&lpItem->pszText, (LPSTR)pszText);
154 lpItem->callbackMask &= ~HDI_TEXT;
158 lpItem->pszText = NULL;
159 lpItem->callbackMask |= HDI_TEXT;
164 static inline LRESULT
165 HEADER_IndexToOrder (HWND hwnd, INT iItem)
167 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
168 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
169 return lpItem->iOrder;
174 HEADER_OrderToIndex(HWND hwnd, WPARAM wParam)
176 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
177 INT iorder = (INT)wParam;
179 if ((iorder <0) || iorder >= infoPtr->uNumItem)
181 return infoPtr->order[iorder];
185 HEADER_ChangeItemOrder(const HEADER_INFO *infoPtr, INT iItem, INT iNewOrder)
187 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
190 TRACE("%d: %d->%d\n", iItem, lpItem->iOrder, iNewOrder);
191 if (lpItem->iOrder < iNewOrder)
193 memmove(&infoPtr->order[lpItem->iOrder],
194 &infoPtr->order[lpItem->iOrder + 1],
195 (iNewOrder - lpItem->iOrder) * sizeof(INT));
197 if (iNewOrder < lpItem->iOrder)
199 memmove(&infoPtr->order[iNewOrder + 1],
200 &infoPtr->order[iNewOrder],
201 (lpItem->iOrder - iNewOrder) * sizeof(INT));
203 infoPtr->order[iNewOrder] = iItem;
204 nMin = min(lpItem->iOrder, iNewOrder);
205 nMax = max(lpItem->iOrder, iNewOrder);
206 for (i = nMin; i <= nMax; i++)
207 infoPtr->items[infoPtr->order[i]].iOrder = i;
210 /* Note: if iItem is the last item then this function returns infoPtr->uNumItem */
212 HEADER_NextItem(HWND hwnd, INT iItem)
214 return HEADER_OrderToIndex(hwnd, HEADER_IndexToOrder(hwnd, iItem)+1);
218 HEADER_PrevItem(HWND hwnd, INT iItem)
220 return HEADER_OrderToIndex(hwnd, HEADER_IndexToOrder(hwnd, iItem)-1);
224 HEADER_SetItemBounds (HWND hwnd)
226 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
232 infoPtr->bRectsValid = TRUE;
234 if (infoPtr->uNumItem == 0)
237 GetClientRect (hwnd, &rect);
240 for (i = 0; i < infoPtr->uNumItem; i++) {
241 phdi = &infoPtr->items[HEADER_OrderToIndex(hwnd,i)];
242 phdi->rect.top = rect.top;
243 phdi->rect.bottom = rect.bottom;
245 phdi->rect.right = phdi->rect.left + ((phdi->cxy>0)?phdi->cxy:0);
246 x = phdi->rect.right;
251 HEADER_Size (HWND hwnd, WPARAM wParam)
253 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
255 infoPtr->bRectsValid = FALSE;
260 static void HEADER_GetHotDividerRect(HWND hwnd, const HEADER_INFO *infoPtr, RECT *r)
262 INT iDivider = infoPtr->iHotDivider;
263 if (infoPtr->uNumItem > 0)
267 if (iDivider < infoPtr->uNumItem)
269 lpItem = &infoPtr->items[iDivider];
270 r->left = lpItem->rect.left - HOT_DIVIDER_WIDTH/2;
271 r->right = lpItem->rect.left + HOT_DIVIDER_WIDTH/2;
275 lpItem = &infoPtr->items[HEADER_OrderToIndex(hwnd, infoPtr->uNumItem-1)];
276 r->left = lpItem->rect.right - HOT_DIVIDER_WIDTH/2;
277 r->right = lpItem->rect.right + HOT_DIVIDER_WIDTH/2;
279 r->top = lpItem->rect.top;
280 r->bottom = lpItem->rect.bottom;
285 GetClientRect(hwnd, &clientRect);
287 r->right = r->left + HOT_DIVIDER_WIDTH/2;
293 HEADER_DrawItem (HWND hwnd, HDC hdc, INT iItem, BOOL bHotTrack, LRESULT lCDFlags)
295 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
296 HEADER_ITEM *phdi = &infoPtr->items[iItem];
299 HTHEME theme = GetWindowTheme (hwnd);
302 TRACE("DrawItem(iItem %d bHotTrack %d unicode flag %d)\n", iItem, bHotTrack, (infoPtr->nNotifyFormat == NFR_UNICODE));
305 if (r.right - r.left == 0)
306 return phdi->rect.right;
308 /* Set the colors before sending NM_CUSTOMDRAW so that it can change them */
309 SetTextColor(hdc, (bHotTrack && !theme) ? COLOR_HIGHLIGHT : COLOR_BTNTEXT);
310 SetBkColor(hdc, GetSysColor(COLOR_3DFACE));
312 if (lCDFlags & CDRF_NOTIFYITEMDRAW && !(phdi->fmt & HDF_OWNERDRAW))
314 LRESULT lCDItemFlags;
316 nmcd.dwDrawStage = CDDS_PREPAINT | CDDS_ITEM;
318 nmcd.dwItemSpec = iItem;
320 nmcd.uItemState = phdi->bDown ? CDIS_SELECTED : 0;
321 nmcd.lItemlParam = phdi->lParam;
323 lCDItemFlags = HEADER_SendNotify(hwnd, NM_CUSTOMDRAW, (NMHDR *)&nmcd);
324 if (lCDItemFlags & CDRF_SKIPDEFAULT)
325 return phdi->rect.right;
329 int state = (phdi->bDown) ? HIS_PRESSED :
330 (bHotTrack ? HIS_HOT : HIS_NORMAL);
331 DrawThemeBackground (theme, hdc, HP_HEADERITEM, state,
333 GetThemeBackgroundContentRect (theme, hdc, HP_HEADERITEM, state,
339 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS) {
341 DrawEdge (hdc, &r, BDR_RAISEDOUTER,
342 BF_RECT | BF_FLAT | BF_MIDDLE | BF_ADJUST);
345 DrawEdge (hdc, &r, EDGE_RAISED,
346 BF_RECT | BF_SOFT | BF_MIDDLE | BF_ADJUST);
349 DrawEdge (hdc, &r, EDGE_ETCHED, BF_BOTTOM | BF_RIGHT | BF_ADJUST);
351 hbr = CreateSolidBrush(GetBkColor(hdc));
352 FillRect(hdc, &r, hbr);
360 if (phdi->fmt & HDF_OWNERDRAW) {
363 dis.CtlType = ODT_HEADER;
364 dis.CtlID = GetWindowLongPtrW (hwnd, GWLP_ID);
366 dis.itemAction = ODA_DRAWENTIRE;
367 dis.itemState = phdi->bDown ? ODS_SELECTED : 0;
370 dis.rcItem = phdi->rect;
371 dis.itemData = phdi->lParam;
372 oldBkMode = SetBkMode(hdc, TRANSPARENT);
373 SendMessageW (infoPtr->hwndNotify, WM_DRAWITEM,
374 (WPARAM)dis.CtlID, (LPARAM)&dis);
375 if (oldBkMode != TRANSPARENT)
376 SetBkMode(hdc, oldBkMode);
379 UINT rw, rh, /* width and height of r */
380 *x = NULL, *w = NULL; /* x and width of the pic (bmp or img) which is part of cnt */
381 /* cnt,txt,img,bmp */
386 HEADER_PrepareCallbackItems(hwnd, iItem, HDI_TEXT|HDI_IMAGE);
387 cw = tw = iw = bw = 0;
388 rw = r.right - r.left;
389 rh = r.bottom - r.top;
391 if (phdi->fmt & HDF_STRING) {
394 SetRectEmpty(&textRect);
395 DrawTextW (hdc, phdi->pszText, -1,
396 &textRect, DT_LEFT|DT_VCENTER|DT_SINGLELINE|DT_CALCRECT);
397 cw = textRect.right - textRect.left + 2 * infoPtr->iMargin;
400 if ((phdi->fmt & HDF_IMAGE) && (infoPtr->himl)) {
401 iw = infoPtr->himl->cx + 2 * infoPtr->iMargin;
406 if ((phdi->fmt & HDF_BITMAP) && (phdi->hbm)) {
407 GetObjectW (phdi->hbm, sizeof(BITMAP), (LPVOID)&bmp);
408 bw = bmp.bmWidth + 2 * infoPtr->iMargin;
418 /* align cx using the unclipped cw */
419 if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_LEFT)
421 else if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_CENTER)
422 cx = r.left + rw / 2 - cw / 2;
429 if (cx + cw > r.right)
432 tx = cx + infoPtr->iMargin;
433 /* since cw might have changed we have to recalculate tw */
434 tw = cw - infoPtr->iMargin * 2;
438 if (phdi->fmt & HDF_BITMAP_ON_RIGHT) {
439 /* put pic behind text */
440 *x = cx + tw + infoPtr->iMargin * 3;
442 *x = cx + infoPtr->iMargin;
443 /* move text behind pic */
449 /* since we're done with the layout we can
450 now calculate the position of bmp which
451 has no influence on alignment and layout
453 if ((phdi->fmt & HDF_JUSTIFYMASK) == HDF_RIGHT)
454 bx = cx - bw + infoPtr->iMargin;
456 bx = cx + cw + infoPtr->iMargin;
460 HDC hClipDC = GetDC(hwnd);
461 HRGN hClipRgn = CreateRectRgn(r.left, r.top, r.right, r.bottom);
462 SelectClipRgn(hClipDC, hClipRgn);
465 HDC hdcBitmap = CreateCompatibleDC (hClipDC);
466 SelectObject (hdcBitmap, phdi->hbm);
467 BitBlt (hClipDC, bx, r.top + ((INT)rh - bmp.bmHeight) / 2,
468 bmp.bmWidth, bmp.bmHeight, hdcBitmap, 0, 0, SRCCOPY);
469 DeleteDC (hdcBitmap);
473 ImageList_DrawEx (infoPtr->himl, phdi->iImage, hClipDC,
474 ix, r.top + ((INT)rh - infoPtr->himl->cy) / 2,
475 infoPtr->himl->cx, infoPtr->himl->cy, CLR_DEFAULT, CLR_DEFAULT, 0);
478 DeleteObject(hClipRgn);
479 ReleaseDC(hwnd, hClipDC);
482 if (((phdi->fmt & HDF_STRING)
483 || (!(phdi->fmt & (HDF_OWNERDRAW|HDF_STRING|HDF_BITMAP|
484 HDF_BITMAP_ON_RIGHT|HDF_IMAGE)))) /* no explicit format specified? */
485 && (phdi->pszText)) {
486 oldBkMode = SetBkMode(hdc, TRANSPARENT);
489 DrawTextW (hdc, phdi->pszText, -1,
490 &r, DT_LEFT|DT_END_ELLIPSIS|DT_VCENTER|DT_SINGLELINE);
491 if (oldBkMode != TRANSPARENT)
492 SetBkMode(hdc, oldBkMode);
494 HEADER_FreeCallbackItems(phdi);
497 return phdi->rect.right;
501 HEADER_DrawHotDivider(HWND hwnd, HDC hdc)
503 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
507 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
508 brush = CreateSolidBrush(GetSysColor(COLOR_HIGHLIGHT));
509 FillRect(hdc, &r, brush);
514 HEADER_Refresh (HWND hwnd, HDC hdc)
516 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
517 HFONT hFont, hOldFont;
523 HTHEME theme = GetWindowTheme (hwnd);
525 if (!infoPtr->bRectsValid)
526 HEADER_SetItemBounds(hwnd);
528 /* get rect for the bar, adjusted for the border */
529 GetClientRect (hwnd, &rect);
530 lCDFlags = HEADER_SendCtrlCustomDraw(hwnd, CDDS_PREPAINT, hdc, &rect);
532 if (infoPtr->bDragging)
533 ImageList_DragShowNolock(FALSE);
535 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
536 hOldFont = SelectObject (hdc, hFont);
538 /* draw Background */
539 if (infoPtr->uNumItem == 0 && theme == NULL) {
540 hbrBk = GetSysColorBrush(COLOR_3DFACE);
541 FillRect(hdc, &rect, hbrBk);
545 for (i = 0; x <= rect.right && i < infoPtr->uNumItem; i++) {
546 int idx = HEADER_OrderToIndex(hwnd,i);
547 if (RectVisible(hdc, &infoPtr->items[idx].rect))
548 HEADER_DrawItem(hwnd, hdc, idx, infoPtr->iHotItem == idx, lCDFlags);
549 x = infoPtr->items[idx].rect.right;
554 if ((x <= rect.right) && RectVisible(hdc, &rcRest) && (infoPtr->uNumItem > 0)) {
556 DrawThemeBackground(theme, hdc, HP_HEADERITEM, HIS_NORMAL, &rcRest, NULL);
559 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS)
560 DrawEdge (hdc, &rcRest, EDGE_RAISED, BF_TOP|BF_LEFT|BF_BOTTOM|BF_SOFT|BF_MIDDLE);
562 DrawEdge (hdc, &rcRest, EDGE_ETCHED, BF_BOTTOM|BF_MIDDLE);
566 if (infoPtr->iHotDivider != -1)
567 HEADER_DrawHotDivider(hwnd, hdc);
569 if (infoPtr->bDragging)
570 ImageList_DragShowNolock(TRUE);
571 SelectObject (hdc, hOldFont);
573 if (lCDFlags & CDRF_NOTIFYPOSTPAINT)
574 HEADER_SendCtrlCustomDraw(hwnd, CDDS_POSTPAINT, hdc, &rect);
579 HEADER_RefreshItem (HWND hwnd, HDC hdc, INT iItem)
581 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
583 if (!infoPtr->bRectsValid)
584 HEADER_SetItemBounds(hwnd);
586 InvalidateRect(hwnd, &infoPtr->items[iItem].rect, FALSE);
591 HEADER_InternalHitTest (HWND hwnd, const POINT *lpPt, UINT *pFlags, INT *pItem)
593 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
599 GetClientRect (hwnd, &rect);
603 if (PtInRect (&rect, *lpPt))
605 if (infoPtr->uNumItem == 0) {
606 *pFlags |= HHT_NOWHERE;
612 /* somewhere inside */
613 for (iCount = 0; iCount < infoPtr->uNumItem; iCount++) {
614 rect = infoPtr->items[iCount].rect;
615 width = rect.right - rect.left;
620 if (PtInRect (&rect, *lpPt)) {
621 if (width <= 2 * DIVIDER_WIDTH) {
622 *pFlags |= HHT_ONHEADER;
624 TRACE("ON HEADER %d\n", iCount);
627 if (HEADER_IndexToOrder(hwnd, iCount) > 0) {
629 rcTest.right = rcTest.left + DIVIDER_WIDTH;
630 if (PtInRect (&rcTest, *lpPt)) {
632 *pFlags |= HHT_ONDIVOPEN;
633 *pItem = HEADER_PrevItem(hwnd, iCount);
634 TRACE("ON DIVOPEN %d\n", *pItem);
638 *pFlags |= HHT_ONDIVIDER;
639 *pItem = HEADER_PrevItem(hwnd, iCount);
640 TRACE("ON DIVIDER %d\n", *pItem);
646 rcTest.left = rcTest.right - DIVIDER_WIDTH;
647 if (PtInRect (&rcTest, *lpPt)) {
648 *pFlags |= HHT_ONDIVIDER;
650 TRACE("ON DIVIDER %d\n", *pItem);
654 *pFlags |= HHT_ONHEADER;
656 TRACE("ON HEADER %d\n", iCount);
661 /* check for last divider part (on nowhere) */
662 rect = infoPtr->items[infoPtr->uNumItem-1].rect;
663 rect.left = rect.right;
664 rect.right += DIVIDER_WIDTH;
665 if (PtInRect (&rect, *lpPt)) {
667 *pFlags |= HHT_ONDIVOPEN;
668 *pItem = infoPtr->uNumItem - 1;
669 TRACE("ON DIVOPEN %d\n", *pItem);
673 *pFlags |= HHT_ONDIVIDER;
674 *pItem = infoPtr->uNumItem-1;
675 TRACE("ON DIVIDER %d\n", *pItem);
680 *pFlags |= HHT_NOWHERE;
687 if (lpPt->x < rect.left) {
689 *pFlags |= HHT_TOLEFT;
691 else if (lpPt->x > rect.right) {
693 *pFlags |= HHT_TORIGHT;
696 if (lpPt->y < rect.top) {
698 *pFlags |= HHT_ABOVE;
700 else if (lpPt->y > rect.bottom) {
702 *pFlags |= HHT_BELOW;
707 TRACE("flags=0x%X\n", *pFlags);
713 HEADER_DrawTrackLine (HWND hwnd, HDC hdc, INT x)
719 GetClientRect (hwnd, &rect);
721 hOldPen = SelectObject (hdc, GetStockObject (BLACK_PEN));
722 oldRop = SetROP2 (hdc, R2_XORPEN);
723 MoveToEx (hdc, x, rect.top, NULL);
724 LineTo (hdc, x, rect.bottom);
725 SetROP2 (hdc, oldRop);
726 SelectObject (hdc, hOldPen);
731 * Convert a HDITEM into the correct format (ANSI/Unicode) to send it in a notify
734 * [I] infoPtr : the header that wants to send the notify
735 * [O] dest : The buffer to store the HDITEM for notify. It may be set to a HDITEMA of HDITEMW
736 * [I] src : The source HDITEM. It may be a HDITEMA or HDITEMW
737 * [I] fSourceUnicode : is src a HDITEMW or HDITEMA
738 * [O] ppvScratch : a pointer to a scratch buffer that needs to be freed after
739 * the HDITEM is no longer in use or NULL if none was needed
741 * NOTE: We depend on HDITEMA and HDITEMW having the same structure
743 static void HEADER_CopyHDItemForNotify(const HEADER_INFO *infoPtr, HDITEMW *dest,
744 const HDITEMW *src, BOOL fSourceUnicode, LPVOID *ppvScratch)
749 if (src->mask & HDI_TEXT && src->pszText != LPSTR_TEXTCALLBACKW) /* covers TEXTCALLBACKA as well */
751 if (fSourceUnicode && infoPtr->nNotifyFormat != NFR_UNICODE)
753 dest->pszText = NULL;
754 Str_SetPtrWtoA((LPSTR *)&dest->pszText, src->pszText);
755 *ppvScratch = dest->pszText;
758 if (!fSourceUnicode && infoPtr->nNotifyFormat == NFR_UNICODE)
760 dest->pszText = NULL;
761 Str_SetPtrAtoW(&dest->pszText, (LPSTR)src->pszText);
762 *ppvScratch = dest->pszText;
767 static UINT HEADER_NotifyCodeWtoA(UINT code)
769 /* we use the fact that all the unicode messages are in HDN_FIRST_UNICODE..HDN_LAST*/
770 if (code >= HDN_LAST && code <= HDN_FIRST_UNICODE)
771 return code + HDN_UNICODE_OFFSET;
777 HEADER_SendNotify(HWND hwnd, UINT code, NMHDR *nmhdr)
779 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
781 nmhdr->hwndFrom = hwnd;
782 nmhdr->idFrom = GetWindowLongPtrW (hwnd, GWLP_ID);
785 return SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
786 (WPARAM)nmhdr->idFrom, (LPARAM)nmhdr);
790 HEADER_SendSimpleNotify (HWND hwnd, UINT code)
793 return (BOOL)HEADER_SendNotify(hwnd, code, &nmhdr);
797 HEADER_SendCtrlCustomDraw(HWND hwnd, DWORD dwDrawStage, HDC hdc, const RECT *rect)
800 nm.dwDrawStage = dwDrawStage;
807 return HEADER_SendNotify(hwnd, NM_CUSTOMDRAW, (NMHDR *)&nm);
811 HEADER_SendNotifyWithHDItemT(HWND hwnd, UINT code, INT iItem, HDITEMW *lpItem)
813 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
816 if (infoPtr->nNotifyFormat != NFR_UNICODE)
817 code = HEADER_NotifyCodeWtoA(code);
820 nmhdr.pitem = lpItem;
822 return (BOOL)HEADER_SendNotify(hwnd, code, (NMHDR *)&nmhdr);
826 HEADER_SendNotifyWithIntFieldT(HWND hwnd, UINT code, INT iItem, INT mask, INT iValue)
828 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
831 /* copying only the iValue should be ok but to make the code more robust we copy everything */
832 nmitem.cxy = infoPtr->items[iItem].cxy;
833 nmitem.hbm = infoPtr->items[iItem].hbm;
834 nmitem.pszText = NULL;
835 nmitem.cchTextMax = 0;
836 nmitem.fmt = infoPtr->items[iItem].fmt;
837 nmitem.lParam = infoPtr->items[iItem].lParam;
838 nmitem.iOrder = infoPtr->items[iItem].iOrder;
839 nmitem.iImage = infoPtr->items[iItem].iImage;
848 nmitem.iOrder = iValue;
851 ERR("invalid mask value 0x%x\n", iValue);
854 return HEADER_SendNotifyWithHDItemT(hwnd, code, iItem, &nmitem);
858 * Prepare callback items
859 * depends on NMHDDISPINFOW having same structure as NMHDDISPINFOA
860 * (so we handle the two cases only doing a specific cast for pszText).
861 * Checks if any of the required field are callback. If there are sends a
862 * NMHDISPINFO notify to retrieve these items. The items are stored in the
863 * HEADER_ITEM pszText and iImage fields. They should be freed with
864 * HEADER_FreeCallbackItems.
866 * @param hwnd : hwnd header container handler
867 * @param iItem : the header item id
868 * @param reqMask : required fields. If any of them is callback this function will fetch it
870 * @return TRUE on success, else FALSE
873 HEADER_PrepareCallbackItems(HWND hwnd, INT iItem, INT reqMask)
875 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
876 HEADER_ITEM *lpItem = &infoPtr->items[iItem];
877 DWORD mask = reqMask & lpItem->callbackMask;
878 NMHDDISPINFOW dispInfo;
879 void *pvBuffer = NULL;
883 if (mask&HDI_TEXT && lpItem->pszText != NULL)
885 ERR("(): function called without a call to FreeCallbackItems\n");
886 Free(lpItem->pszText);
887 lpItem->pszText = NULL;
890 memset(&dispInfo, 0, sizeof(NMHDDISPINFOW));
891 dispInfo.hdr.hwndFrom = hwnd;
892 dispInfo.hdr.idFrom = GetWindowLongPtrW (hwnd, GWLP_ID);
893 if (infoPtr->nNotifyFormat == NFR_UNICODE)
895 dispInfo.hdr.code = HDN_GETDISPINFOW;
897 pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(WCHAR));
901 dispInfo.hdr.code = HDN_GETDISPINFOA;
903 pvBuffer = Alloc(MAX_HEADER_TEXT_LEN * sizeof(CHAR));
905 dispInfo.pszText = (LPWSTR)pvBuffer;
906 dispInfo.cchTextMax = (pvBuffer!=NULL?MAX_HEADER_TEXT_LEN:0);
907 dispInfo.iItem = iItem;
908 dispInfo.mask = mask;
909 dispInfo.lParam = lpItem->lParam;
911 TRACE("Sending HDN_GETDISPINFO%c\n", infoPtr->nNotifyFormat == NFR_UNICODE?'W':'A');
912 SendMessageW(infoPtr->hwndNotify, WM_NOTIFY,
913 (WPARAM) dispInfo.hdr.idFrom,
916 TRACE("SendMessage returns(mask:0x%x,str:%s,lParam:%p)\n",
918 (infoPtr->nNotifyFormat == NFR_UNICODE ? debugstr_w(dispInfo.pszText) : (LPSTR) dispInfo.pszText),
919 (void*) dispInfo.lParam);
921 if (mask & HDI_IMAGE)
922 lpItem->iImage = dispInfo.iImage;
925 if (infoPtr->nNotifyFormat == NFR_UNICODE)
927 lpItem->pszText = (LPWSTR)pvBuffer;
929 /* the user might have used his own buffer */
930 if (dispInfo.pszText != lpItem->pszText)
931 Str_GetPtrW(dispInfo.pszText, lpItem->pszText, MAX_HEADER_TEXT_LEN);
935 Str_SetPtrAtoW(&lpItem->pszText, (LPSTR)dispInfo.pszText);
940 if (dispInfo.mask & HDI_DI_SETITEM)
942 /* make the items permanent */
943 lpItem->callbackMask &= ~dispInfo.mask;
951 * Free the items that might be allocated with HEADER_PrepareCallbackItems
954 * [I] lpItem : the item to free the data
958 HEADER_FreeCallbackItems(HEADER_ITEM *lpItem)
960 if (lpItem->callbackMask&HDI_TEXT)
962 Free(lpItem->pszText);
963 lpItem->pszText = NULL;
966 if (lpItem->callbackMask&HDI_IMAGE)
967 lpItem->iImage = I_IMAGECALLBACK;
971 HEADER_CreateDragImage (HWND hwnd, WPARAM wParam)
973 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
976 HBITMAP hMemory, hOldBitmap;
984 if (wParam < 0 || wParam >= infoPtr->uNumItem)
987 if (!infoPtr->bRectsValid)
988 HEADER_SetItemBounds(hwnd);
990 lpItem = &infoPtr->items[wParam];
991 width = lpItem->rect.right - lpItem->rect.left;
992 height = lpItem->rect.bottom - lpItem->rect.top;
994 hDeviceDC = GetDC(NULL);
995 hMemoryDC = CreateCompatibleDC(hDeviceDC);
996 hMemory = CreateCompatibleBitmap(hDeviceDC, width, height);
997 ReleaseDC(NULL, hDeviceDC);
998 hOldBitmap = SelectObject(hMemoryDC, hMemory);
999 SetViewportOrgEx(hMemoryDC, -lpItem->rect.left, -lpItem->rect.top, NULL);
1000 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject(SYSTEM_FONT);
1001 SelectObject(hMemoryDC, hFont);
1003 GetClientRect(hwnd, &rc);
1004 lCDFlags = HEADER_SendCtrlCustomDraw(hwnd, CDDS_PREPAINT, hMemoryDC, &rc);
1005 HEADER_DrawItem(hwnd, hMemoryDC, wParam, FALSE, lCDFlags);
1006 if (lCDFlags & CDRF_NOTIFYPOSTPAINT)
1007 HEADER_SendCtrlCustomDraw(hwnd, CDDS_POSTPAINT, hMemoryDC, &rc);
1009 hMemory = SelectObject(hMemoryDC, hOldBitmap);
1010 DeleteDC(hMemoryDC);
1012 if (hMemory == NULL) /* if anything failed */
1015 himl = ImageList_Create(width, height, ILC_COLORDDB, 1, 1);
1016 ImageList_Add(himl, hMemory, NULL);
1017 DeleteObject(hMemory);
1018 return (LRESULT)himl;
1022 HEADER_SetHotDivider(HWND hwnd, WPARAM wParam, LPARAM lParam)
1024 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1032 pt.x = (INT)(SHORT)LOWORD(lParam);
1034 HEADER_InternalHitTest (hwnd, &pt, &flags, &iDivider);
1036 if (flags & HHT_TOLEFT)
1038 else if (flags & HHT_NOWHERE || flags & HHT_TORIGHT)
1039 iDivider = infoPtr->uNumItem;
1042 HEADER_ITEM *lpItem = &infoPtr->items[iDivider];
1043 if (pt.x > (lpItem->rect.left+lpItem->rect.right)/2)
1044 iDivider = HEADER_NextItem(hwnd, iDivider);
1048 iDivider = (INT)lParam;
1050 /* Note; wParam==FALSE, lParam==-1 is valid and is used to clear the hot divider */
1051 if (iDivider<-1 || iDivider>(int)infoPtr->uNumItem)
1054 if (iDivider != infoPtr->iHotDivider)
1056 if (infoPtr->iHotDivider != -1)
1058 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
1059 InvalidateRect(hwnd, &r, FALSE);
1061 infoPtr->iHotDivider = iDivider;
1064 HEADER_GetHotDividerRect(hwnd, infoPtr, &r);
1065 InvalidateRect(hwnd, &r, FALSE);
1072 HEADER_DeleteItem (HWND hwnd, WPARAM wParam)
1074 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1075 INT iItem = (INT)wParam;
1079 TRACE("[iItem=%d]\n", iItem);
1081 if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
1084 for (i = 0; i < infoPtr->uNumItem; i++)
1085 TRACE("%d: order=%d, iOrder=%d, ->iOrder=%d\n", i, infoPtr->order[i], infoPtr->items[i].iOrder, infoPtr->items[infoPtr->order[i]].iOrder);
1087 iOrder = infoPtr->items[iItem].iOrder;
1088 Free(infoPtr->items[iItem].pszText);
1090 infoPtr->uNumItem--;
1091 memmove(&infoPtr->items[iItem], &infoPtr->items[iItem + 1],
1092 (infoPtr->uNumItem - iItem) * sizeof(HEADER_ITEM));
1093 memmove(&infoPtr->order[iOrder], &infoPtr->order[iOrder + 1],
1094 (infoPtr->uNumItem - iOrder) * sizeof(INT));
1095 infoPtr->items = ReAlloc(infoPtr->items, sizeof(HEADER_ITEM) * infoPtr->uNumItem);
1096 infoPtr->order = ReAlloc(infoPtr->order, sizeof(INT) * infoPtr->uNumItem);
1098 /* Correct the orders */
1099 for (i = 0; i < infoPtr->uNumItem; i++)
1101 if (infoPtr->order[i] > iItem)
1102 infoPtr->order[i]--;
1104 infoPtr->items[infoPtr->order[i]].iOrder = i;
1106 for (i = 0; i < infoPtr->uNumItem; i++)
1107 TRACE("%d: order=%d, iOrder=%d, ->iOrder=%d\n", i, infoPtr->order[i], infoPtr->items[i].iOrder, infoPtr->items[infoPtr->order[i]].iOrder);
1109 HEADER_SetItemBounds (hwnd);
1110 InvalidateRect(hwnd, NULL, FALSE);
1117 HEADER_GetImageList (HWND hwnd)
1119 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1121 return (LRESULT)infoPtr->himl;
1126 HEADER_GetItemT (HWND hwnd, INT nItem, LPHDITEMW phdi, BOOL bUnicode)
1128 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1129 HEADER_ITEM *lpItem;
1135 TRACE("[nItem=%d]\n", nItem);
1141 if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
1144 if (mask & HDI_UNKNOWN_FIELDS)
1146 TRACE("mask %x contains unknown fields. Using only comctl32 4.0 fields\n", mask);
1147 mask &= HDI_COMCTL32_4_0_FIELDS;
1150 lpItem = &infoPtr->items[nItem];
1151 HEADER_PrepareCallbackItems(hwnd, nItem, mask);
1153 if (mask & HDI_BITMAP)
1154 phdi->hbm = lpItem->hbm;
1156 if (mask & HDI_FORMAT)
1157 phdi->fmt = lpItem->fmt;
1159 if (mask & HDI_WIDTH)
1160 phdi->cxy = lpItem->cxy;
1162 if (mask & HDI_LPARAM)
1163 phdi->lParam = lpItem->lParam;
1165 if (mask & HDI_IMAGE)
1166 phdi->iImage = lpItem->iImage;
1168 if (mask & HDI_ORDER)
1169 phdi->iOrder = lpItem->iOrder;
1171 if (mask & HDI_TEXT)
1174 Str_GetPtrW (lpItem->pszText, phdi->pszText, phdi->cchTextMax);
1176 Str_GetPtrWtoA (lpItem->pszText, (LPSTR)phdi->pszText, phdi->cchTextMax);
1179 HEADER_FreeCallbackItems(lpItem);
1184 static inline LRESULT
1185 HEADER_GetItemCount (HWND hwnd)
1187 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1188 return infoPtr->uNumItem;
1193 HEADER_GetItemRect (HWND hwnd, WPARAM wParam, LPARAM lParam)
1195 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1196 INT iItem = (INT)wParam;
1197 LPRECT lpRect = (LPRECT)lParam;
1199 if ((iItem < 0) || (iItem >= (INT)infoPtr->uNumItem))
1202 lpRect->left = infoPtr->items[iItem].rect.left;
1203 lpRect->right = infoPtr->items[iItem].rect.right;
1204 lpRect->top = infoPtr->items[iItem].rect.top;
1205 lpRect->bottom = infoPtr->items[iItem].rect.bottom;
1212 HEADER_GetOrderArray(HWND hwnd, WPARAM wParam, LPARAM lParam)
1214 LPINT order = (LPINT) lParam;
1215 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1217 if ((unsigned int)wParam <infoPtr->uNumItem)
1220 memcpy(order, infoPtr->order, infoPtr->uNumItem * sizeof(INT));
1225 HEADER_SetOrderArray(HWND hwnd, WPARAM wParam, LPARAM lParam)
1228 LPINT order = (LPINT) lParam;
1229 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1230 HEADER_ITEM *lpItem;
1232 if ((unsigned int)wParam <infoPtr->uNumItem)
1234 memcpy(infoPtr->order, order, infoPtr->uNumItem * sizeof(INT));
1235 for (i=0; i<(int)wParam; i++)
1237 lpItem = &infoPtr->items[*order++];
1240 infoPtr->bRectsValid=0;
1241 InvalidateRect(hwnd, NULL, FALSE);
1245 static inline LRESULT
1246 HEADER_GetUnicodeFormat (HWND hwnd)
1248 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1249 return (infoPtr->nNotifyFormat == NFR_UNICODE);
1254 HEADER_HitTest (HWND hwnd, WPARAM wParam, LPARAM lParam)
1256 LPHDHITTESTINFO phti = (LPHDHITTESTINFO)lParam;
1258 HEADER_InternalHitTest (hwnd, &phti->pt, &phti->flags, &phti->iItem);
1260 if (phti->flags == HHT_NOWHERE)
1268 HEADER_InsertItemT (HWND hwnd, INT nItem, const HDITEMW *phdi, BOOL bUnicode)
1270 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1271 HEADER_ITEM *lpItem;
1276 if ((phdi == NULL) || (nItem < 0) || (phdi->mask == 0))
1279 if (nItem > infoPtr->uNumItem)
1280 nItem = infoPtr->uNumItem;
1282 iOrder = (phdi->mask & HDI_ORDER) ? phdi->iOrder : nItem;
1285 else if (infoPtr->uNumItem < iOrder)
1286 iOrder = infoPtr->uNumItem;
1288 infoPtr->uNumItem++;
1289 infoPtr->items = ReAlloc(infoPtr->items, sizeof(HEADER_ITEM) * infoPtr->uNumItem);
1290 infoPtr->order = ReAlloc(infoPtr->order, sizeof(INT) * infoPtr->uNumItem);
1292 /* make space for the new item */
1293 memmove(&infoPtr->items[nItem + 1], &infoPtr->items[nItem],
1294 (infoPtr->uNumItem - nItem - 1) * sizeof(HEADER_ITEM));
1295 memmove(&infoPtr->order[iOrder + 1], &infoPtr->order[iOrder],
1296 (infoPtr->uNumItem - iOrder - 1) * sizeof(INT));
1298 /* update the order array */
1299 infoPtr->order[iOrder] = nItem;
1300 for (i = 0; i < infoPtr->uNumItem; i++)
1302 if (i != iOrder && infoPtr->order[i] >= nItem)
1303 infoPtr->order[i]++;
1304 infoPtr->items[infoPtr->order[i]].iOrder = i;
1307 lpItem = &infoPtr->items[nItem];
1308 ZeroMemory(lpItem, sizeof(HEADER_ITEM));
1309 /* cxy, fmt and lParam are copied even if not in the HDITEM mask */
1310 copyMask = phdi->mask | HDI_WIDTH | HDI_FORMAT | HDI_LPARAM;
1311 HEADER_StoreHDItemInHeader(lpItem, copyMask, phdi, bUnicode);
1312 lpItem->iOrder = iOrder;
1314 /* set automatically some format bits */
1315 if (phdi->mask & HDI_TEXT)
1316 lpItem->fmt |= HDF_STRING;
1318 lpItem->fmt &= ~HDF_STRING;
1320 if (lpItem->hbm != NULL)
1321 lpItem->fmt |= HDF_BITMAP;
1323 lpItem->fmt &= ~HDF_BITMAP;
1325 if (phdi->mask & HDI_IMAGE)
1326 lpItem->fmt |= HDF_IMAGE;
1328 HEADER_SetItemBounds (hwnd);
1329 InvalidateRect(hwnd, NULL, FALSE);
1336 HEADER_Layout (HWND hwnd, WPARAM wParam, LPARAM lParam)
1338 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1339 LPHDLAYOUT lpLayout = (LPHDLAYOUT)lParam;
1341 lpLayout->pwpos->hwnd = hwnd;
1342 lpLayout->pwpos->hwndInsertAfter = 0;
1343 lpLayout->pwpos->x = lpLayout->prc->left;
1344 lpLayout->pwpos->y = lpLayout->prc->top;
1345 lpLayout->pwpos->cx = lpLayout->prc->right - lpLayout->prc->left;
1346 if (GetWindowLongW (hwnd, GWL_STYLE) & HDS_HIDDEN)
1347 lpLayout->pwpos->cy = 0;
1349 lpLayout->pwpos->cy = infoPtr->nHeight;
1350 lpLayout->prc->top += infoPtr->nHeight;
1352 lpLayout->pwpos->flags = SWP_NOZORDER;
1354 TRACE("Layout x=%d y=%d cx=%d cy=%d\n",
1355 lpLayout->pwpos->x, lpLayout->pwpos->y,
1356 lpLayout->pwpos->cx, lpLayout->pwpos->cy);
1358 infoPtr->bRectsValid = FALSE;
1365 HEADER_SetImageList (HWND hwnd, HIMAGELIST himl)
1367 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1370 TRACE("(himl %p)\n", himl);
1371 himlOld = infoPtr->himl;
1372 infoPtr->himl = himl;
1374 /* FIXME: Refresh needed??? */
1376 return (LRESULT)himlOld;
1381 HEADER_GetBitmapMargin(HWND hwnd)
1383 HEADER_INFO *infoPtr = HEADER_GetInfoPtr(hwnd);
1385 return infoPtr->iMargin;
1389 HEADER_SetBitmapMargin(HWND hwnd, WPARAM wParam)
1391 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1392 INT oldMargin = infoPtr->iMargin;
1394 infoPtr->iMargin = (INT)wParam;
1400 HEADER_SetItemT (HWND hwnd, INT nItem, const HDITEMW *phdi, BOOL bUnicode)
1402 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1403 HEADER_ITEM *lpItem;
1409 if ((nItem < 0) || (nItem >= (INT)infoPtr->uNumItem))
1412 TRACE("[nItem=%d]\n", nItem);
1414 HEADER_CopyHDItemForNotify(infoPtr, &hdNotify, phdi, bUnicode, &pvScratch);
1415 if (HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCHANGINGW, nItem, &hdNotify))
1421 lpItem = &infoPtr->items[nItem];
1422 HEADER_StoreHDItemInHeader(lpItem, phdi->mask, phdi, bUnicode);
1424 if (phdi->mask & HDI_ORDER)
1425 if (phdi->iOrder >= 0 && phdi->iOrder < infoPtr->uNumItem)
1426 HEADER_ChangeItemOrder(infoPtr, nItem, phdi->iOrder);
1428 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCHANGEDW, nItem, &hdNotify);
1430 HEADER_SetItemBounds (hwnd);
1432 InvalidateRect(hwnd, NULL, FALSE);
1438 static inline LRESULT
1439 HEADER_SetUnicodeFormat (HWND hwnd, WPARAM wParam)
1441 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1442 BOOL bTemp = (infoPtr->nNotifyFormat == NFR_UNICODE);
1444 infoPtr->nNotifyFormat = ((BOOL)wParam ? NFR_UNICODE : NFR_ANSI);
1451 HEADER_Create (HWND hwnd, WPARAM wParam, LPARAM lParam)
1453 HEADER_INFO *infoPtr;
1458 infoPtr = (HEADER_INFO *)Alloc (sizeof(HEADER_INFO));
1459 SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
1461 infoPtr->hwndNotify = ((LPCREATESTRUCTA)lParam)->hwndParent;
1462 infoPtr->uNumItem = 0;
1466 infoPtr->bRectsValid = FALSE;
1467 infoPtr->hcurArrow = LoadCursorW (0, (LPWSTR)IDC_ARROW);
1468 infoPtr->hcurDivider = LoadCursorW (COMCTL32_hModule, MAKEINTRESOURCEW(IDC_DIVIDER));
1469 infoPtr->hcurDivopen = LoadCursorW (COMCTL32_hModule, MAKEINTRESOURCEW(IDC_DIVIDEROPEN));
1470 infoPtr->bPressed = FALSE;
1471 infoPtr->bTracking = FALSE;
1472 infoPtr->iMoveItem = 0;
1474 infoPtr->iHotItem = -1;
1475 infoPtr->iHotDivider = -1;
1476 infoPtr->iMargin = 3*GetSystemMetrics(SM_CXEDGE);
1477 infoPtr->nNotifyFormat =
1478 SendMessageW (infoPtr->hwndNotify, WM_NOTIFYFORMAT, (WPARAM)hwnd, NF_QUERY);
1481 hOldFont = SelectObject (hdc, GetStockObject (SYSTEM_FONT));
1482 GetTextMetricsW (hdc, &tm);
1483 infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1484 SelectObject (hdc, hOldFont);
1487 OpenThemeData(hwnd, themeClass);
1494 HEADER_Destroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
1496 HTHEME theme = GetWindowTheme(hwnd);
1497 CloseThemeData(theme);
1502 HEADER_NCDestroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
1504 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1505 HEADER_ITEM *lpItem;
1508 if (infoPtr->items) {
1509 lpItem = infoPtr->items;
1510 for (nItem = 0; nItem < infoPtr->uNumItem; nItem++, lpItem++) {
1511 Free(lpItem->pszText);
1513 Free (infoPtr->items);
1516 Free(infoPtr->order);
1519 ImageList_Destroy (infoPtr->himl);
1521 SetWindowLongPtrW (hwnd, 0, 0);
1528 static inline LRESULT
1529 HEADER_GetFont (HWND hwnd)
1531 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1533 return (LRESULT)infoPtr->hFont;
1538 HEADER_IsDragDistance(const HEADER_INFO *infoPtr, const POINT *pt)
1540 /* Windows allows for a mouse movement before starting the drag. We use the
1541 * SM_CXDOUBLECLICK/SM_CYDOUBLECLICK as that distance.
1543 return (abs(infoPtr->ptLButtonDown.x - pt->x)>GetSystemMetrics(SM_CXDOUBLECLK) ||
1544 abs(infoPtr->ptLButtonDown.y - pt->y)>GetSystemMetrics(SM_CYDOUBLECLK));
1548 HEADER_LButtonDblClk (HWND hwnd, WPARAM wParam, LPARAM lParam)
1554 pt.x = (short)LOWORD(lParam);
1555 pt.y = (short)HIWORD(lParam);
1556 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1558 if ((GetWindowLongW (hwnd, GWL_STYLE) & HDS_BUTTONS) && (flags == HHT_ONHEADER))
1559 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMDBLCLICKW, nItem, NULL);
1560 else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN))
1561 HEADER_SendNotifyWithHDItemT(hwnd, HDN_DIVIDERDBLCLICKW, nItem, NULL);
1568 HEADER_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
1570 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1571 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1577 pt.x = (short)LOWORD(lParam);
1578 pt.y = (short)HIWORD(lParam);
1579 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1581 if ((dwStyle & HDS_BUTTONS) && (flags == HHT_ONHEADER)) {
1583 infoPtr->bCaptured = TRUE;
1584 infoPtr->bPressed = TRUE;
1585 infoPtr->bDragging = FALSE;
1586 infoPtr->iMoveItem = nItem;
1587 infoPtr->ptLButtonDown = pt;
1589 infoPtr->items[nItem].bDown = TRUE;
1591 /* Send WM_CUSTOMDRAW */
1593 HEADER_RefreshItem (hwnd, hdc, nItem);
1594 ReleaseDC (hwnd, hdc);
1596 TRACE("Pressed item %d!\n", nItem);
1598 else if ((flags == HHT_ONDIVIDER) || (flags == HHT_ONDIVOPEN)) {
1599 INT iCurrWidth = infoPtr->items[nItem].cxy;
1600 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_BEGINTRACKW, nItem, HDI_WIDTH, iCurrWidth))
1603 infoPtr->bCaptured = TRUE;
1604 infoPtr->bTracking = TRUE;
1605 infoPtr->iMoveItem = nItem;
1606 infoPtr->xTrackOffset = infoPtr->items[nItem].rect.right - pt.x;
1608 if (!(dwStyle & HDS_FULLDRAG)) {
1609 infoPtr->xOldTrack = infoPtr->items[nItem].rect.right;
1611 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1612 ReleaseDC (hwnd, hdc);
1615 TRACE("Begin tracking item %d!\n", nItem);
1624 HEADER_LButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1626 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1627 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1633 pt.x = (INT)(SHORT)LOWORD(lParam);
1634 pt.y = (INT)(SHORT)HIWORD(lParam);
1635 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1637 if (infoPtr->bPressed) {
1638 if (infoPtr->bDragging)
1640 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1643 ImageList_DragShowNolock(FALSE);
1644 ImageList_EndDrag();
1645 lpItem->bDown=FALSE;
1647 if (infoPtr->iHotDivider == -1)
1649 else if (infoPtr->iHotDivider == infoPtr->uNumItem)
1650 iNewOrder = infoPtr->uNumItem-1;
1653 iNewOrder = HEADER_IndexToOrder(hwnd, infoPtr->iHotDivider);
1654 if (iNewOrder > lpItem->iOrder)
1658 if (iNewOrder != -1 &&
1659 !HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ENDDRAG, infoPtr->iMoveItem, HDI_ORDER, iNewOrder))
1661 HEADER_ChangeItemOrder(infoPtr, infoPtr->iMoveItem, iNewOrder);
1662 infoPtr->bRectsValid = FALSE;
1663 InvalidateRect(hwnd, NULL, FALSE);
1666 InvalidateRect(hwnd, &infoPtr->items[infoPtr->iMoveItem].rect, FALSE);
1668 HEADER_SetHotDivider(hwnd, FALSE, -1);
1670 else if (!(dwStyle&HDS_DRAGDROP) || !HEADER_IsDragDistance(infoPtr, &pt))
1672 infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1674 HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1675 ReleaseDC (hwnd, hdc);
1677 HEADER_SendNotifyWithHDItemT(hwnd, HDN_ITEMCLICKW, infoPtr->iMoveItem, NULL);
1680 TRACE("Released item %d!\n", infoPtr->iMoveItem);
1681 infoPtr->bPressed = FALSE;
1683 else if (infoPtr->bTracking) {
1684 INT iNewWidth = pt.x - infoPtr->items[infoPtr->iMoveItem].rect.left + infoPtr->xTrackOffset;
1687 TRACE("End tracking item %d!\n", infoPtr->iMoveItem);
1688 infoPtr->bTracking = FALSE;
1690 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ENDTRACKW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth);
1692 if (!(dwStyle & HDS_FULLDRAG)) {
1694 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1695 ReleaseDC (hwnd, hdc);
1698 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGINGW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth))
1700 infoPtr->items[infoPtr->iMoveItem].cxy = iNewWidth;
1701 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGEDW, infoPtr->iMoveItem, HDI_WIDTH, iNewWidth);
1704 HEADER_SetItemBounds (hwnd);
1705 InvalidateRect(hwnd, NULL, TRUE);
1708 if (infoPtr->bCaptured) {
1709 infoPtr->bCaptured = FALSE;
1711 HEADER_SendSimpleNotify (hwnd, NM_RELEASEDCAPTURE);
1719 HEADER_NotifyFormat (HWND hwnd, WPARAM wParam, LPARAM lParam)
1721 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1726 return infoPtr->nNotifyFormat;
1729 infoPtr->nNotifyFormat =
1730 SendMessageW ((HWND)wParam, WM_NOTIFYFORMAT,
1731 (WPARAM)hwnd, (LPARAM)NF_QUERY);
1732 return infoPtr->nNotifyFormat;
1739 HEADER_MouseLeave (HWND hwnd, WPARAM wParam, LPARAM lParam)
1741 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1742 /* Reset hot-tracked item when mouse leaves control. */
1743 INT oldHotItem = infoPtr->iHotItem;
1744 HDC hdc = GetDC (hwnd);
1746 infoPtr->iHotItem = -1;
1747 if (oldHotItem != -1) HEADER_RefreshItem (hwnd, hdc, oldHotItem);
1748 ReleaseDC (hwnd, hdc);
1755 HEADER_MouseMove (HWND hwnd, WPARAM wParam, LPARAM lParam)
1757 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1758 DWORD dwStyle = GetWindowLongW (hwnd, GWL_STYLE);
1763 /* With theming, hottracking is always enabled */
1764 BOOL hotTrackEnabled =
1765 ((dwStyle & HDS_BUTTONS) && (dwStyle & HDS_HOTTRACK))
1766 || (GetWindowTheme (hwnd) != NULL);
1767 INT oldHotItem = infoPtr->iHotItem;
1769 pt.x = (INT)(SHORT)LOWORD(lParam);
1770 pt.y = (INT)(SHORT)HIWORD(lParam);
1771 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1773 if (hotTrackEnabled) {
1774 if (flags & (HHT_ONHEADER | HHT_ONDIVIDER | HHT_ONDIVOPEN))
1775 infoPtr->iHotItem = nItem;
1777 infoPtr->iHotItem = -1;
1780 if (infoPtr->bCaptured) {
1781 /* check if we should drag the header */
1782 if (infoPtr->bPressed && !infoPtr->bDragging && dwStyle&HDS_DRAGDROP
1783 && HEADER_IsDragDistance(infoPtr, &pt))
1785 if (!HEADER_SendNotifyWithHDItemT(hwnd, HDN_BEGINDRAG, infoPtr->iMoveItem, NULL))
1787 HIMAGELIST hDragItem = (HIMAGELIST)HEADER_CreateDragImage(hwnd, infoPtr->iMoveItem);
1788 if (hDragItem != NULL)
1790 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1791 TRACE("Starting item drag\n");
1792 ImageList_BeginDrag(hDragItem, 0, pt.x - lpItem->rect.left, 0);
1793 ImageList_DragShowNolock(TRUE);
1794 ImageList_Destroy(hDragItem);
1795 infoPtr->bDragging = TRUE;
1800 if (infoPtr->bDragging)
1805 ClientToScreen(hwnd, &drag);
1806 ImageList_DragMove(drag.x, drag.y);
1807 HEADER_SetHotDivider(hwnd, TRUE, lParam);
1810 if (infoPtr->bPressed && !infoPtr->bDragging) {
1811 BOOL oldState = infoPtr->items[infoPtr->iMoveItem].bDown;
1812 if ((nItem == infoPtr->iMoveItem) && (flags == HHT_ONHEADER))
1813 infoPtr->items[infoPtr->iMoveItem].bDown = TRUE;
1815 infoPtr->items[infoPtr->iMoveItem].bDown = FALSE;
1816 if (oldState != infoPtr->items[infoPtr->iMoveItem].bDown) {
1818 HEADER_RefreshItem (hwnd, hdc, infoPtr->iMoveItem);
1819 ReleaseDC (hwnd, hdc);
1822 TRACE("Moving pressed item %d!\n", infoPtr->iMoveItem);
1824 else if (infoPtr->bTracking) {
1825 if (dwStyle & HDS_FULLDRAG) {
1826 HEADER_ITEM *lpItem = &infoPtr->items[infoPtr->iMoveItem];
1827 nWidth = pt.x - lpItem->rect.left + infoPtr->xTrackOffset;
1828 if (!HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGINGW, infoPtr->iMoveItem, HDI_WIDTH, nWidth))
1830 INT nOldWidth = lpItem->rect.right - lpItem->rect.left;
1834 if (nWidth < 0) nWidth = 0;
1835 infoPtr->items[infoPtr->iMoveItem].cxy = nWidth;
1836 HEADER_SetItemBounds(hwnd);
1838 GetClientRect(hwnd, &rcClient);
1839 rcScroll = rcClient;
1840 rcScroll.left = lpItem->rect.left + nOldWidth;
1841 ScrollWindowEx(hwnd, nWidth - nOldWidth, 0, &rcScroll, &rcClient, NULL, NULL, 0);
1842 InvalidateRect(hwnd, &lpItem->rect, FALSE);
1845 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_ITEMCHANGEDW, infoPtr->iMoveItem, HDI_WIDTH, nWidth);
1851 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1852 infoPtr->xOldTrack = pt.x + infoPtr->xTrackOffset;
1853 if (infoPtr->xOldTrack < infoPtr->items[infoPtr->iMoveItem].rect.left)
1854 infoPtr->xOldTrack = infoPtr->items[infoPtr->iMoveItem].rect.left;
1855 HEADER_DrawTrackLine (hwnd, hdc, infoPtr->xOldTrack);
1856 ReleaseDC (hwnd, hdc);
1857 iTrackWidth = infoPtr->xOldTrack - infoPtr->items[infoPtr->iMoveItem].rect.left;
1858 /* FIXME: should stop tracking if HDN_TRACK returns TRUE */
1859 HEADER_SendNotifyWithIntFieldT(hwnd, HDN_TRACKW, infoPtr->iMoveItem, HDI_WIDTH, iTrackWidth);
1862 TRACE("Tracking item %d!\n", infoPtr->iMoveItem);
1866 if (hotTrackEnabled) {
1867 TRACKMOUSEEVENT tme;
1868 if (oldHotItem != infoPtr->iHotItem && !infoPtr->bDragging) {
1870 if (oldHotItem != -1) HEADER_RefreshItem (hwnd, hdc, oldHotItem);
1871 if (infoPtr->iHotItem != -1) HEADER_RefreshItem (hwnd, hdc, infoPtr->iHotItem);
1872 ReleaseDC (hwnd, hdc);
1874 tme.cbSize = sizeof( tme );
1875 tme.dwFlags = TME_LEAVE;
1876 tme.hwndTrack = hwnd;
1877 TrackMouseEvent( &tme );
1885 HEADER_Paint (HWND hwnd, WPARAM wParam)
1890 hdc = wParam==0 ? BeginPaint (hwnd, &ps) : (HDC)wParam;
1891 HEADER_Refresh (hwnd, hdc);
1893 EndPaint (hwnd, &ps);
1899 HEADER_RButtonUp (HWND hwnd, WPARAM wParam, LPARAM lParam)
1904 pt.x = (short)LOWORD(lParam);
1905 pt.y = (short)HIWORD(lParam);
1907 /* Send a Notify message */
1908 bRet = HEADER_SendSimpleNotify (hwnd, NM_RCLICK);
1910 /* Change to screen coordinate for WM_CONTEXTMENU */
1911 ClientToScreen(hwnd, &pt);
1913 /* Send a WM_CONTEXTMENU message in response to the RBUTTONUP */
1914 SendMessageW( hwnd, WM_CONTEXTMENU, (WPARAM) hwnd, MAKELPARAM(pt.x, pt.y));
1921 HEADER_SetCursor (HWND hwnd, WPARAM wParam, LPARAM lParam)
1923 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1928 TRACE("code=0x%X id=0x%X\n", LOWORD(lParam), HIWORD(lParam));
1931 ScreenToClient (hwnd, &pt);
1933 HEADER_InternalHitTest (hwnd, &pt, &flags, &nItem);
1935 if (flags == HHT_ONDIVIDER)
1936 SetCursor (infoPtr->hcurDivider);
1937 else if (flags == HHT_ONDIVOPEN)
1938 SetCursor (infoPtr->hcurDivopen);
1940 SetCursor (infoPtr->hcurArrow);
1947 HEADER_SetFont (HWND hwnd, WPARAM wParam, LPARAM lParam)
1949 HEADER_INFO *infoPtr = HEADER_GetInfoPtr (hwnd);
1951 HFONT hFont, hOldFont;
1954 infoPtr->hFont = (HFONT)wParam;
1956 hFont = infoPtr->hFont ? infoPtr->hFont : GetStockObject (SYSTEM_FONT);
1959 hOldFont = SelectObject (hdc, hFont);
1960 GetTextMetricsW (hdc, &tm);
1961 infoPtr->nHeight = tm.tmHeight + VERT_BORDER;
1962 SelectObject (hdc, hOldFont);
1965 infoPtr->bRectsValid = FALSE;
1968 InvalidateRect(hwnd, NULL, FALSE);
1974 static LRESULT HEADER_SetRedraw(HWND hwnd, WPARAM wParam, LPARAM lParam)
1976 /* ignoring the InvalidateRect calls is handled by user32. But some apps expect
1977 * that we invalidate the header and this has to be done manually */
1980 ret = DefWindowProcW(hwnd, WM_SETREDRAW, wParam, lParam);
1982 InvalidateRect(hwnd, NULL, TRUE);
1986 /* Update the theme handle after a theme change */
1987 static LRESULT HEADER_ThemeChanged(HWND hwnd)
1989 HTHEME theme = GetWindowTheme(hwnd);
1990 CloseThemeData(theme);
1991 OpenThemeData(hwnd, themeClass);
1992 InvalidateRect(hwnd, NULL, FALSE);
1997 static LRESULT WINAPI
1998 HEADER_WindowProc (HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
2000 TRACE("hwnd=%p msg=%x wparam=%lx lParam=%lx\n", hwnd, msg, wParam, lParam);
2001 if (!HEADER_GetInfoPtr (hwnd) && (msg != WM_CREATE))
2002 return DefWindowProcW (hwnd, msg, wParam, lParam);
2004 /* case HDM_CLEARFILTER: */
2006 case HDM_CREATEDRAGIMAGE:
2007 return HEADER_CreateDragImage (hwnd, wParam);
2009 case HDM_DELETEITEM:
2010 return HEADER_DeleteItem (hwnd, wParam);
2012 /* case HDM_EDITFILTER: */
2014 case HDM_GETBITMAPMARGIN:
2015 return HEADER_GetBitmapMargin(hwnd);
2017 case HDM_GETIMAGELIST:
2018 return HEADER_GetImageList (hwnd);
2022 return HEADER_GetItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_GETITEMW);
2024 case HDM_GETITEMCOUNT:
2025 return HEADER_GetItemCount (hwnd);
2027 case HDM_GETITEMRECT:
2028 return HEADER_GetItemRect (hwnd, wParam, lParam);
2030 case HDM_GETORDERARRAY:
2031 return HEADER_GetOrderArray(hwnd, wParam, lParam);
2033 case HDM_GETUNICODEFORMAT:
2034 return HEADER_GetUnicodeFormat (hwnd);
2037 return HEADER_HitTest (hwnd, wParam, lParam);
2039 case HDM_INSERTITEMA:
2040 case HDM_INSERTITEMW:
2041 return HEADER_InsertItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_INSERTITEMW);
2044 return HEADER_Layout (hwnd, wParam, lParam);
2046 case HDM_ORDERTOINDEX:
2047 return HEADER_OrderToIndex(hwnd, wParam);
2049 case HDM_SETBITMAPMARGIN:
2050 return HEADER_SetBitmapMargin(hwnd, wParam);
2052 /* case HDM_SETFILTERCHANGETIMEOUT: */
2054 case HDM_SETHOTDIVIDER:
2055 return HEADER_SetHotDivider(hwnd, wParam, lParam);
2057 case HDM_SETIMAGELIST:
2058 return HEADER_SetImageList (hwnd, (HIMAGELIST)lParam);
2062 return HEADER_SetItemT (hwnd, (INT)wParam, (LPHDITEMW)lParam, msg == HDM_SETITEMW);
2064 case HDM_SETORDERARRAY:
2065 return HEADER_SetOrderArray(hwnd, wParam, lParam);
2067 case HDM_SETUNICODEFORMAT:
2068 return HEADER_SetUnicodeFormat (hwnd, wParam);
2071 return HEADER_Create (hwnd, wParam, lParam);
2074 return HEADER_Destroy (hwnd, wParam, lParam);
2077 return HEADER_NCDestroy (hwnd, wParam, lParam);
2083 return DLGC_WANTTAB | DLGC_WANTARROWS;
2086 return HEADER_GetFont (hwnd);
2088 case WM_LBUTTONDBLCLK:
2089 return HEADER_LButtonDblClk (hwnd, wParam, lParam);
2091 case WM_LBUTTONDOWN:
2092 return HEADER_LButtonDown (hwnd, wParam, lParam);
2095 return HEADER_LButtonUp (hwnd, wParam, lParam);
2098 return HEADER_MouseLeave (hwnd, wParam, lParam);
2101 return HEADER_MouseMove (hwnd, wParam, lParam);
2103 case WM_NOTIFYFORMAT:
2104 return HEADER_NotifyFormat (hwnd, wParam, lParam);
2107 return HEADER_Size (hwnd, wParam);
2109 case WM_THEMECHANGED:
2110 return HEADER_ThemeChanged (hwnd);
2112 case WM_PRINTCLIENT:
2114 return HEADER_Paint (hwnd, wParam);
2117 return HEADER_RButtonUp (hwnd, wParam, lParam);
2120 return HEADER_SetCursor (hwnd, wParam, lParam);
2123 return HEADER_SetFont (hwnd, wParam, lParam);
2126 return HEADER_SetRedraw(hwnd, wParam, lParam);
2129 if ((msg >= WM_USER) && (msg < WM_APP))
2130 ERR("unknown msg %04x wp=%04lx lp=%08lx\n",
2131 msg, wParam, lParam );
2132 return DefWindowProcW(hwnd, msg, wParam, lParam);
2138 HEADER_Register (void)
2142 ZeroMemory (&wndClass, sizeof(WNDCLASSW));
2143 wndClass.style = CS_GLOBALCLASS | CS_DBLCLKS;
2144 wndClass.lpfnWndProc = HEADER_WindowProc;
2145 wndClass.cbClsExtra = 0;
2146 wndClass.cbWndExtra = sizeof(HEADER_INFO *);
2147 wndClass.hCursor = LoadCursorW (0, (LPWSTR)IDC_ARROW);
2148 wndClass.lpszClassName = WC_HEADERW;
2150 RegisterClassW (&wndClass);
2155 HEADER_Unregister (void)
2157 UnregisterClassW (WC_HEADERW, NULL);