4 * Copyright 1997 Alex Korobka
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 * This code was audited for completeness against the documented features
23 * of Comctl32.dll version 6.0 on Oct. 4, 2004, by Dimitrie O. Paun.
25 * Unless otherwise noted, we believe this code to be complete, as per
26 * the specification mentioned above.
27 * If you discover missing features, or bugs, please note them below.
30 * - ComboBox_[GS]etMinVisible()
31 * - CB_GETMINVISIBLE, CB_SETMINVISIBLE
44 #include "wine/unicode.h"
45 #include "user_private.h"
49 #include "wine/debug.h"
51 WINE_DEFAULT_DEBUG_CHANNEL(combo);
53 /* bits in the dwKeyData */
54 #define KEYDATA_ALT 0x2000
55 #define KEYDATA_PREVSTATE 0x4000
58 * Additional combo box definitions
61 #define CB_NOTIFY( lphc, code ) \
62 (SendMessageW((lphc)->owner, WM_COMMAND, \
63 MAKEWPARAM(GetWindowLongPtrW((lphc)->self,GWLP_ID), (code)), (LPARAM)(lphc)->self))
65 #define CB_DISABLED( lphc ) (!IsWindowEnabled((lphc)->self))
66 #define CB_OWNERDRAWN( lphc ) ((lphc)->dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE))
67 #define CB_HASSTRINGS( lphc ) ((lphc)->dwStyle & CBS_HASSTRINGS)
68 #define CB_HWND( lphc ) ((lphc)->self)
69 #define CB_GETTYPE( lphc ) ((lphc)->dwStyle & (CBS_DROPDOWNLIST))
71 #define ISWIN31 (LOWORD(GetVersion()) == 0x0a03)
76 static HBITMAP hComboBmp = 0;
77 static UINT CBitHeight, CBitWidth;
80 * Look and feel dependent "constants"
83 #define COMBO_YBORDERGAP 5
84 #define COMBO_XBORDERSIZE() 2
85 #define COMBO_YBORDERSIZE() 2
86 #define COMBO_EDITBUTTONSPACE() 0
87 #define EDIT_CONTROL_PADDING() 1
89 /*********************************************************************
90 * combo class descriptor
92 static const WCHAR comboboxW[] = {'C','o','m','b','o','B','o','x',0};
93 const struct builtin_class_descr COMBO_builtin_class =
96 CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, /* style */
97 WINPROC_COMBO, /* proc */
98 sizeof(HEADCOMBO *), /* extra */
99 IDC_ARROW, /* cursor */
104 /***********************************************************************
107 * Load combo button bitmap.
109 static BOOL COMBO_Init(void)
113 if( hComboBmp ) return TRUE;
114 if( (hDC = CreateCompatibleDC(0)) )
117 if( (hComboBmp = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_COMBO))) )
123 GetObjectW( hComboBmp, sizeof(bm), &bm );
124 CBitHeight = bm.bmHeight;
125 CBitWidth = bm.bmWidth;
127 TRACE("combo bitmap [%i,%i]\n", CBitWidth, CBitHeight );
129 hPrevB = SelectObject( hDC, hComboBmp);
130 SetRect( &r, 0, 0, CBitWidth, CBitHeight );
131 InvertRect( hDC, &r );
132 SelectObject( hDC, hPrevB );
141 /***********************************************************************
144 static LRESULT COMBO_NCCreate(HWND hwnd, LONG style)
148 if (COMBO_Init() && (lphc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(HEADCOMBO))) )
151 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)lphc );
153 /* some braindead apps do try to use scrollbar/border flags */
155 lphc->dwStyle = style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL);
156 SetWindowLongW( hwnd, GWL_STYLE, style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL) );
159 * We also have to remove the client edge style to make sure
160 * we don't end-up with a non client area.
162 SetWindowLongW( hwnd, GWL_EXSTYLE,
163 GetWindowLongW( hwnd, GWL_EXSTYLE ) & ~WS_EX_CLIENTEDGE );
165 if( !(style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
166 lphc->dwStyle |= CBS_HASSTRINGS;
167 if( !(GetWindowLongW( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) )
168 lphc->wState |= CBF_NOTIFY;
170 TRACE("[%p], style = %08x\n", lphc, lphc->dwStyle );
176 /***********************************************************************
179 static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
184 TRACE("[%p]: freeing storage\n", lphc->self);
186 if( (CB_GETTYPE(lphc) != CBS_SIMPLE) && lphc->hWndLBox )
187 DestroyWindow( lphc->hWndLBox );
189 SetWindowLongPtrW( lphc->self, 0, 0 );
190 HeapFree( GetProcessHeap(), 0, lphc );
195 /***********************************************************************
196 * CBGetTextAreaHeight
198 * This method will calculate the height of the text area of the
200 * The height of the text area is set in two ways.
201 * It can be set explicitly through a combobox message or through a
202 * WM_MEASUREITEM callback.
203 * If this is not the case, the height is set to font height + 4px
204 * This height was determined through experimentation.
205 * CBCalcPlacement will add 2*COMBO_YBORDERSIZE pixels for the border
207 static INT CBGetTextAreaHeight(
213 if( lphc->editHeight ) /* explicitly set height */
215 iTextItemHeight = lphc->editHeight;
220 HDC hDC = GetDC(hwnd);
225 hPrevFont = SelectObject( hDC, lphc->hFont );
227 GetTextMetricsW(hDC, &tm);
229 baseUnitY = tm.tmHeight;
232 SelectObject( hDC, hPrevFont );
234 ReleaseDC(hwnd, hDC);
236 iTextItemHeight = baseUnitY + 4;
240 * Check the ownerdraw case if we haven't asked the parent the size
243 if ( CB_OWNERDRAWN(lphc) &&
244 (lphc->wState & CBF_MEASUREITEM) )
246 MEASUREITEMSTRUCT measureItem;
248 INT originalItemHeight = iTextItemHeight;
249 UINT id = (UINT)GetWindowLongPtrW( lphc->self, GWLP_ID );
252 * We use the client rect for the width of the item.
254 GetClientRect(hwnd, &clientRect);
256 lphc->wState &= ~CBF_MEASUREITEM;
259 * Send a first one to measure the size of the text area
261 measureItem.CtlType = ODT_COMBOBOX;
262 measureItem.CtlID = id;
263 measureItem.itemID = -1;
264 measureItem.itemWidth = clientRect.right;
265 measureItem.itemHeight = iTextItemHeight - 6; /* ownerdrawn cb is taller */
266 measureItem.itemData = 0;
267 SendMessageW(lphc->owner, WM_MEASUREITEM, id, (LPARAM)&measureItem);
268 iTextItemHeight = 6 + measureItem.itemHeight;
271 * Send a second one in the case of a fixed ownerdraw list to calculate the
272 * size of the list items. (we basically do this on behalf of the listbox)
274 if (lphc->dwStyle & CBS_OWNERDRAWFIXED)
276 measureItem.CtlType = ODT_COMBOBOX;
277 measureItem.CtlID = id;
278 measureItem.itemID = 0;
279 measureItem.itemWidth = clientRect.right;
280 measureItem.itemHeight = originalItemHeight;
281 measureItem.itemData = 0;
282 SendMessageW(lphc->owner, WM_MEASUREITEM, id, (LPARAM)&measureItem);
283 lphc->fixedOwnerDrawHeight = measureItem.itemHeight;
287 * Keep the size for the next time
289 lphc->editHeight = iTextItemHeight;
292 return iTextItemHeight;
295 /***********************************************************************
298 * The dummy resize is used for listboxes that have a popup to trigger
299 * a re-arranging of the contents of the combobox and the recalculation
300 * of the size of the "real" control window.
302 static void CBForceDummyResize(
308 newComboHeight = CBGetTextAreaHeight(lphc->self,lphc) + 2*COMBO_YBORDERSIZE();
310 GetWindowRect(lphc->self, &windowRect);
313 * We have to be careful, resizing a combobox also has the meaning that the
314 * dropped rect will be resized. In this case, we want to trigger a resize
315 * to recalculate layout but we don't want to change the dropped rectangle
316 * So, we pass the height of text area of control as the height.
317 * this will cancel-out in the processing of the WM_WINDOWPOSCHANGING
320 SetWindowPos( lphc->self,
323 windowRect.right - windowRect.left,
325 SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
328 /***********************************************************************
331 * Set up component coordinates given valid lphc->RectCombo.
333 static void CBCalcPlacement(
341 * Again, start with the client rectangle.
343 GetClientRect(hwnd, lprEdit);
348 InflateRect(lprEdit, -COMBO_XBORDERSIZE(), -COMBO_YBORDERSIZE());
351 * Chop off the bottom part to fit with the height of the text area.
353 lprEdit->bottom = lprEdit->top + CBGetTextAreaHeight(hwnd, lphc);
356 * The button starts the same vertical position as the text area.
358 CopyRect(lprButton, lprEdit);
361 * If the combobox is "simple" there is no button.
363 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
364 lprButton->left = lprButton->right = lprButton->bottom = 0;
368 * Let's assume the combobox button is the same width as the
370 * size the button horizontally and cut-off the text area.
372 lprButton->left = lprButton->right - GetSystemMetrics(SM_CXVSCROLL);
373 lprEdit->right = lprButton->left;
377 * In the case of a dropdown, there is an additional spacing between the
378 * text area and the button.
380 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
382 lprEdit->right -= COMBO_EDITBUTTONSPACE();
386 * If we have an edit control, we space it away from the borders slightly.
388 if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
390 InflateRect(lprEdit, -EDIT_CONTROL_PADDING(), -EDIT_CONTROL_PADDING());
394 * Adjust the size of the listbox popup.
396 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
399 * Use the client rectangle to initialize the listbox rectangle
401 GetClientRect(hwnd, lprLB);
404 * Then, chop-off the top part.
406 lprLB->top = lprEdit->bottom + COMBO_YBORDERSIZE();
411 * Make sure the dropped width is as large as the combobox itself.
413 if (lphc->droppedWidth < (lprButton->right + COMBO_XBORDERSIZE()))
415 lprLB->right = lprLB->left + (lprButton->right + COMBO_XBORDERSIZE());
418 * In the case of a dropdown, the popup listbox is offset to the right.
419 * so, we want to make sure it's flush with the right side of the
422 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
423 lprLB->right -= COMBO_EDITBUTTONSPACE();
426 lprLB->right = lprLB->left + lphc->droppedWidth;
429 /* don't allow negative window width */
430 if (lprEdit->right < lprEdit->left)
431 lprEdit->right = lprEdit->left;
433 TRACE("\ttext\t= (%s)\n", wine_dbgstr_rect(lprEdit));
435 TRACE("\tbutton\t= (%s)\n", wine_dbgstr_rect(lprButton));
437 TRACE("\tlbox\t= (%s)\n", wine_dbgstr_rect(lprLB));
440 /***********************************************************************
441 * CBGetDroppedControlRect
443 static void CBGetDroppedControlRect( LPHEADCOMBO lphc, LPRECT lpRect)
445 /* In windows, CB_GETDROPPEDCONTROLRECT returns the upper left corner
446 of the combo box and the lower right corner of the listbox */
448 GetWindowRect(lphc->self, lpRect);
450 lpRect->right = lpRect->left + lphc->droppedRect.right - lphc->droppedRect.left;
451 lpRect->bottom = lpRect->top + lphc->droppedRect.bottom - lphc->droppedRect.top;
455 /***********************************************************************
458 static LRESULT COMBO_Create( HWND hwnd, LPHEADCOMBO lphc, HWND hwndParent, LONG style,
461 static const WCHAR clbName[] = {'C','o','m','b','o','L','B','o','x',0};
462 static const WCHAR editName[] = {'E','d','i','t',0};
464 if( !CB_GETTYPE(lphc) ) lphc->dwStyle |= CBS_SIMPLE;
465 if( CB_GETTYPE(lphc) != CBS_DROPDOWNLIST ) lphc->wState |= CBF_EDIT;
467 lphc->owner = hwndParent;
470 * The item height and dropped width are not set when the control
473 lphc->droppedWidth = lphc->editHeight = 0;
476 * The first time we go through, we want to measure the ownerdraw item
478 lphc->wState |= CBF_MEASUREITEM;
480 /* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
482 if( lphc->owner || !(style & WS_VISIBLE) )
488 * Initialize the dropped rect to the size of the client area of the
489 * control and then, force all the areas of the combobox to be
492 GetClientRect( hwnd, &lphc->droppedRect );
493 CBCalcPlacement(hwnd, lphc, &lphc->textRect, &lphc->buttonRect, &lphc->droppedRect );
496 * Adjust the position of the popup listbox if it's necessary
498 if ( CB_GETTYPE(lphc) != CBS_SIMPLE )
500 lphc->droppedRect.top = lphc->textRect.bottom + COMBO_YBORDERSIZE();
503 * If it's a dropdown, the listbox is offset
505 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
506 lphc->droppedRect.left += COMBO_EDITBUTTONSPACE();
508 if (lphc->droppedRect.bottom < lphc->droppedRect.top)
509 lphc->droppedRect.bottom = lphc->droppedRect.top;
510 if (lphc->droppedRect.right < lphc->droppedRect.left)
511 lphc->droppedRect.right = lphc->droppedRect.left;
512 MapWindowPoints( hwnd, 0, (LPPOINT)&lphc->droppedRect, 2 );
515 /* create listbox popup */
517 lbeStyle = (LBS_NOTIFY | LBS_COMBOBOX | WS_BORDER | WS_CLIPSIBLINGS | WS_CHILD) |
518 (style & (WS_VSCROLL | CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE));
520 if( lphc->dwStyle & CBS_SORT )
521 lbeStyle |= LBS_SORT;
522 if( lphc->dwStyle & CBS_HASSTRINGS )
523 lbeStyle |= LBS_HASSTRINGS;
524 if( lphc->dwStyle & CBS_NOINTEGRALHEIGHT )
525 lbeStyle |= LBS_NOINTEGRALHEIGHT;
526 if( lphc->dwStyle & CBS_DISABLENOSCROLL )
527 lbeStyle |= LBS_DISABLENOSCROLL;
529 if( CB_GETTYPE(lphc) == CBS_SIMPLE ) /* child listbox */
531 lbeStyle |= WS_VISIBLE;
534 * In win 95 look n feel, the listbox in the simple combobox has
535 * the WS_EXCLIENTEDGE style instead of the WS_BORDER style.
537 lbeStyle &= ~WS_BORDER;
538 lbeExStyle |= WS_EX_CLIENTEDGE;
542 lbeExStyle |= (WS_EX_TOPMOST | WS_EX_TOOLWINDOW);
546 lphc->hWndLBox = CreateWindowExW(lbeExStyle, clbName, NULL, lbeStyle,
547 lphc->droppedRect.left,
548 lphc->droppedRect.top,
549 lphc->droppedRect.right - lphc->droppedRect.left,
550 lphc->droppedRect.bottom - lphc->droppedRect.top,
551 hwnd, (HMENU)ID_CB_LISTBOX,
552 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), lphc );
554 lphc->hWndLBox = CreateWindowExA(lbeExStyle, "ComboLBox", NULL, lbeStyle,
555 lphc->droppedRect.left,
556 lphc->droppedRect.top,
557 lphc->droppedRect.right - lphc->droppedRect.left,
558 lphc->droppedRect.bottom - lphc->droppedRect.top,
559 hwnd, (HMENU)ID_CB_LISTBOX,
560 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), lphc );
565 lbeStyle = WS_CHILD | WS_VISIBLE | ES_NOHIDESEL | ES_LEFT | ES_COMBO;
567 if( lphc->wState & CBF_EDIT )
569 if( lphc->dwStyle & CBS_OEMCONVERT )
570 lbeStyle |= ES_OEMCONVERT;
571 if( lphc->dwStyle & CBS_AUTOHSCROLL )
572 lbeStyle |= ES_AUTOHSCROLL;
573 if( lphc->dwStyle & CBS_LOWERCASE )
574 lbeStyle |= ES_LOWERCASE;
575 else if( lphc->dwStyle & CBS_UPPERCASE )
576 lbeStyle |= ES_UPPERCASE;
578 if (!IsWindowEnabled(hwnd)) lbeStyle |= WS_DISABLED;
581 lphc->hWndEdit = CreateWindowExW(0, editName, NULL, lbeStyle,
582 lphc->textRect.left, lphc->textRect.top,
583 lphc->textRect.right - lphc->textRect.left,
584 lphc->textRect.bottom - lphc->textRect.top,
585 hwnd, (HMENU)ID_CB_EDIT,
586 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), NULL );
588 lphc->hWndEdit = CreateWindowExA(0, "Edit", NULL, lbeStyle,
589 lphc->textRect.left, lphc->textRect.top,
590 lphc->textRect.right - lphc->textRect.left,
591 lphc->textRect.bottom - lphc->textRect.top,
592 hwnd, (HMENU)ID_CB_EDIT,
593 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), NULL );
595 if( !lphc->hWndEdit )
601 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
603 /* Now do the trick with parent */
604 SetParent(lphc->hWndLBox, HWND_DESKTOP);
606 * If the combo is a dropdown, we must resize the control
607 * to fit only the text area and button. To do this,
608 * we send a dummy resize and the WM_WINDOWPOSCHANGING message
609 * will take care of setting the height for us.
611 CBForceDummyResize(lphc);
614 TRACE("init done\n");
617 ERR("edit control failure.\n");
618 } else ERR("listbox failure.\n");
619 } else ERR("no owner for visible combo.\n");
621 /* CreateWindow() will send WM_NCDESTROY to cleanup */
626 /***********************************************************************
629 * Paint combo button (normal, pressed, and disabled states).
631 static void CBPaintButton( LPHEADCOMBO lphc, HDC hdc, RECT rectButton)
633 UINT buttonState = DFCS_SCROLLCOMBOBOX;
635 if( lphc->wState & CBF_NOREDRAW )
639 if (lphc->wState & CBF_BUTTONDOWN)
640 buttonState |= DFCS_PUSHED;
642 if (CB_DISABLED(lphc))
643 buttonState |= DFCS_INACTIVE;
645 DrawFrameControl(hdc, &rectButton, DFC_SCROLL, buttonState);
648 /***********************************************************************
651 * Paint CBS_DROPDOWNLIST text field / update edit control contents.
653 static void CBPaintText(
661 if( lphc->wState & CBF_NOREDRAW ) return;
665 /* follow Windows combobox that sends a bunch of text
666 * inquiries to its listbox while processing WM_PAINT. */
668 if( (id = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0) ) != LB_ERR )
670 size = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, id, 0);
672 FIXME("LB_ERR probably not handled yet\n");
673 if( (pText = HeapAlloc( GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))) )
675 /* size from LB_GETTEXTLEN may be too large, from LB_GETTEXT is accurate */
676 size=SendMessageW(lphc->hWndLBox, LB_GETTEXT, id, (LPARAM)pText);
677 pText[size] = '\0'; /* just in case */
681 if( !CB_OWNERDRAWN(lphc) )
684 if( lphc->wState & CBF_EDIT )
686 static const WCHAR empty_stringW[] = { 0 };
687 if( CB_HASSTRINGS(lphc) ) SetWindowTextW( lphc->hWndEdit, pText ? pText : empty_stringW );
688 if( lphc->wState & CBF_FOCUSED )
689 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);
691 else /* paint text field ourselves */
693 UINT itemState = ODS_COMBOBOXEDIT;
694 HFONT hPrevFont = (lphc->hFont) ? SelectObject(hdc, lphc->hFont) : 0;
697 * Give ourselves some space.
699 InflateRect( &rectEdit, -1, -1 );
701 if( CB_OWNERDRAWN(lphc) )
705 UINT ctlid = (UINT)GetWindowLongPtrW( lphc->self, GWLP_ID );
707 /* setup state for DRAWITEM message. Owner will highlight */
708 if ( (lphc->wState & CBF_FOCUSED) &&
709 !(lphc->wState & CBF_DROPPED) )
710 itemState |= ODS_SELECTED | ODS_FOCUS;
712 if (!IsWindowEnabled(lphc->self)) itemState |= ODS_DISABLED;
714 dis.CtlType = ODT_COMBOBOX;
716 dis.hwndItem = lphc->self;
717 dis.itemAction = ODA_DRAWENTIRE;
719 dis.itemState = itemState;
721 dis.rcItem = rectEdit;
722 dis.itemData = SendMessageW(lphc->hWndLBox, LB_GETITEMDATA, id, 0);
725 * Clip the DC and have the parent draw the item.
727 clipRegion = set_control_clipping( hdc, &rectEdit );
729 SendMessageW(lphc->owner, WM_DRAWITEM, ctlid, (LPARAM)&dis );
731 SelectClipRgn( hdc, clipRegion );
732 if (clipRegion) DeleteObject( clipRegion );
736 static const WCHAR empty_stringW[] = { 0 };
738 if ( (lphc->wState & CBF_FOCUSED) &&
739 !(lphc->wState & CBF_DROPPED) ) {
742 FillRect( hdc, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) );
743 SetBkColor( hdc, GetSysColor( COLOR_HIGHLIGHT ) );
744 SetTextColor( hdc, GetSysColor( COLOR_HIGHLIGHTTEXT ) );
750 ETO_OPAQUE | ETO_CLIPPED,
752 pText ? pText : empty_stringW , size, NULL );
754 if(lphc->wState & CBF_FOCUSED && !(lphc->wState & CBF_DROPPED))
755 DrawFocusRect( hdc, &rectEdit );
759 SelectObject(hdc, hPrevFont );
761 HeapFree( GetProcessHeap(), 0, pText );
764 /***********************************************************************
767 static void CBPaintBorder(
769 const HEADCOMBO *lphc,
774 if (CB_GETTYPE(lphc) != CBS_SIMPLE)
776 GetClientRect(hwnd, &clientRect);
780 CopyRect(&clientRect, &lphc->textRect);
782 InflateRect(&clientRect, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
783 InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
786 DrawEdge(hdc, &clientRect, EDGE_SUNKEN, BF_RECT);
789 /***********************************************************************
790 * COMBO_PrepareColors
792 * This method will sent the appropriate WM_CTLCOLOR message to
793 * prepare and setup the colors for the combo's DC.
795 * It also returns the brush to use for the background.
797 static HBRUSH COMBO_PrepareColors(
804 * Get the background brush for this control.
806 if (CB_DISABLED(lphc))
808 hBkgBrush = (HBRUSH)SendMessageW(lphc->owner, WM_CTLCOLORSTATIC,
809 (WPARAM)hDC, (LPARAM)lphc->self );
812 * We have to change the text color since WM_CTLCOLORSTATIC will
813 * set it to the "enabled" color. This is the same behavior as the
816 SetTextColor(hDC, GetSysColor(COLOR_GRAYTEXT));
820 /* FIXME: In which cases WM_CTLCOLORLISTBOX should be sent? */
821 hBkgBrush = (HBRUSH)SendMessageW(lphc->owner, WM_CTLCOLOREDIT,
822 (WPARAM)hDC, (LPARAM)lphc->self );
829 hBkgBrush = GetSysColorBrush(COLOR_WINDOW);
835 /***********************************************************************
838 static LRESULT COMBO_Paint(LPHEADCOMBO lphc, HDC hParamDC)
843 hDC = (hParamDC) ? hParamDC
844 : BeginPaint( lphc->self, &ps);
846 TRACE("hdc=%p\n", hDC);
848 if( hDC && !(lphc->wState & CBF_NOREDRAW) )
850 HBRUSH hPrevBrush, hBkgBrush;
853 * Retrieve the background brush and select it in the
856 hBkgBrush = COMBO_PrepareColors(lphc, hDC);
858 hPrevBrush = SelectObject( hDC, hBkgBrush );
859 if (!(lphc->wState & CBF_EDIT))
860 FillRect(hDC, &lphc->textRect, hBkgBrush);
863 * In non 3.1 look, there is a sunken border on the combobox
865 CBPaintBorder(lphc->self, lphc, hDC);
867 if( !IsRectEmpty(&lphc->buttonRect) )
869 CBPaintButton(lphc, hDC, lphc->buttonRect);
872 /* paint the edit control padding area */
873 if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
875 RECT rPadEdit = lphc->textRect;
877 InflateRect(&rPadEdit, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
879 FrameRect( hDC, &rPadEdit, GetSysColorBrush(COLOR_WINDOW) );
882 if( !(lphc->wState & CBF_EDIT) )
883 CBPaintText( lphc, hDC, lphc->textRect);
886 SelectObject( hDC, hPrevBrush );
890 EndPaint(lphc->self, &ps);
895 /***********************************************************************
898 * Select listbox entry according to the contents of the edit control.
900 static INT CBUpdateLBox( LPHEADCOMBO lphc, BOOL bSelect )
906 length = SendMessageW( lphc->hWndEdit, WM_GETTEXTLENGTH, 0, 0 );
909 pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
911 TRACE("\t edit text length %i\n", length );
915 GetWindowTextW( lphc->hWndEdit, pText, length + 1);
916 idx = SendMessageW(lphc->hWndLBox, LB_FINDSTRING, -1, (LPARAM)pText);
917 HeapFree( GetProcessHeap(), 0, pText );
920 SendMessageW(lphc->hWndLBox, LB_SETCURSEL, bSelect ? idx : -1, 0);
922 /* probably superfluous but Windows sends this too */
923 SendMessageW(lphc->hWndLBox, LB_SETCARETINDEX, idx < 0 ? 0 : idx, 0);
924 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX, idx < 0 ? 0 : idx, 0);
929 /***********************************************************************
932 * Copy a listbox entry to the edit control.
934 static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
938 static const WCHAR empty_stringW[] = { 0 };
940 TRACE("\t %i\n", index );
942 if( index >= 0 ) /* got an entry */
944 length = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, index, 0);
945 if( length != LB_ERR)
947 if( (pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR))) )
949 SendMessageW(lphc->hWndLBox, LB_GETTEXT, index, (LPARAM)pText);
954 if( CB_HASSTRINGS(lphc) )
956 lphc->wState |= (CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
957 SendMessageW(lphc->hWndEdit, WM_SETTEXT, 0, pText ? (LPARAM)pText : (LPARAM)empty_stringW);
958 lphc->wState &= ~(CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
961 if( lphc->wState & CBF_FOCUSED )
962 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);
964 HeapFree( GetProcessHeap(), 0, pText );
967 /***********************************************************************
970 * Show listbox popup.
972 static void CBDropDown( LPHEADCOMBO lphc )
975 MONITORINFO mon_info;
980 TRACE("[%p]: drop down\n", lphc->self);
982 CB_NOTIFY( lphc, CBN_DROPDOWN );
986 lphc->wState |= CBF_DROPPED;
987 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
989 lphc->droppedIndex = CBUpdateLBox( lphc, TRUE );
991 /* Update edit only if item is in the list */
992 if( !(lphc->wState & CBF_CAPTURE) && lphc->droppedIndex >= 0)
993 CBUpdateEdit( lphc, lphc->droppedIndex );
997 lphc->droppedIndex = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
999 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX,
1000 lphc->droppedIndex == LB_ERR ? 0 : lphc->droppedIndex, 0);
1001 SendMessageW(lphc->hWndLBox, LB_CARETON, 0, 0);
1004 /* now set popup position */
1005 GetWindowRect( lphc->self, &rect );
1008 * If it's a dropdown, the listbox is offset
1010 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1011 rect.left += COMBO_EDITBUTTONSPACE();
1013 /* if the dropped height is greater than the total height of the dropped
1014 items list, then force the drop down list height to be the total height
1015 of the items in the dropped list */
1017 /* And Remove any extra space (Best Fit) */
1018 nDroppedHeight = lphc->droppedRect.bottom - lphc->droppedRect.top;
1019 /* if listbox length has been set directly by its handle */
1020 GetWindowRect(lphc->hWndLBox, &r);
1021 if (nDroppedHeight < r.bottom - r.top)
1022 nDroppedHeight = r.bottom - r.top;
1023 nItems = (int)SendMessageW(lphc->hWndLBox, LB_GETCOUNT, 0, 0);
1030 nIHeight = (int)SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, 0, 0);
1032 nHeight = nIHeight*nItems;
1034 if (nHeight < nDroppedHeight - COMBO_YBORDERSIZE())
1035 nDroppedHeight = nHeight + COMBO_YBORDERSIZE();
1037 if (nDroppedHeight < nHeight)
1040 nDroppedHeight = (nItems+1)*nIHeight;
1041 else if (nDroppedHeight < 6*nIHeight)
1042 nDroppedHeight = 6*nIHeight;
1046 /*If height of dropped rectangle gets beyond a screen size it should go up, otherwise down.*/
1047 monitor = MonitorFromRect( &rect, MONITOR_DEFAULTTOPRIMARY );
1048 mon_info.cbSize = sizeof(mon_info);
1049 GetMonitorInfoW( monitor, &mon_info );
1051 if( (rect.bottom + nDroppedHeight) >= mon_info.rcWork.bottom )
1052 rect.bottom = rect.top - nDroppedHeight;
1054 SetWindowPos( lphc->hWndLBox, HWND_TOP, rect.left, rect.bottom,
1055 lphc->droppedRect.right - lphc->droppedRect.left,
1057 SWP_NOACTIVATE | SWP_SHOWWINDOW);
1060 if( !(lphc->wState & CBF_NOREDRAW) )
1061 RedrawWindow( lphc->self, NULL, 0, RDW_INVALIDATE |
1062 RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1064 EnableWindow( lphc->hWndLBox, TRUE );
1065 if (GetCapture() != lphc->self)
1066 SetCapture(lphc->hWndLBox);
1069 /***********************************************************************
1072 * Hide listbox popup.
1074 static void CBRollUp( LPHEADCOMBO lphc, BOOL ok, BOOL bButton )
1076 HWND hWnd = lphc->self;
1078 TRACE("[%p]: sel ok? [%i] dropped? [%i]\n",
1079 lphc->self, ok, (INT)(lphc->wState & CBF_DROPPED));
1081 CB_NOTIFY( lphc, (ok) ? CBN_SELENDOK : CBN_SELENDCANCEL );
1083 if( IsWindow( hWnd ) && CB_GETTYPE(lphc) != CBS_SIMPLE )
1086 if( lphc->wState & CBF_DROPPED )
1090 lphc->wState &= ~CBF_DROPPED;
1091 ShowWindow( lphc->hWndLBox, SW_HIDE );
1093 if(GetCapture() == lphc->hWndLBox)
1098 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1100 rect = lphc->buttonRect;
1111 rect = lphc->textRect;
1116 if( bButton && !(lphc->wState & CBF_NOREDRAW) )
1117 RedrawWindow( hWnd, &rect, 0, RDW_INVALIDATE |
1118 RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1119 CB_NOTIFY( lphc, CBN_CLOSEUP );
1124 /***********************************************************************
1127 * Used by the ComboLBox to show/hide itself in response to VK_F4, etc...
1129 BOOL COMBO_FlipListbox( LPHEADCOMBO lphc, BOOL ok, BOOL bRedrawButton )
1131 if( lphc->wState & CBF_DROPPED )
1133 CBRollUp( lphc, ok, bRedrawButton );
1141 /***********************************************************************
1144 static void CBRepaintButton( LPHEADCOMBO lphc )
1146 InvalidateRect(lphc->self, &lphc->buttonRect, TRUE);
1147 UpdateWindow(lphc->self);
1150 /***********************************************************************
1153 static void COMBO_SetFocus( LPHEADCOMBO lphc )
1155 if( !(lphc->wState & CBF_FOCUSED) )
1157 if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1158 SendMessageW(lphc->hWndLBox, LB_CARETON, 0, 0);
1160 /* This is wrong. Message sequences seem to indicate that this
1161 is set *after* the notify. */
1162 /* lphc->wState |= CBF_FOCUSED; */
1164 if( !(lphc->wState & CBF_EDIT) )
1165 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1167 CB_NOTIFY( lphc, CBN_SETFOCUS );
1168 lphc->wState |= CBF_FOCUSED;
1172 /***********************************************************************
1175 static void COMBO_KillFocus( LPHEADCOMBO lphc )
1177 HWND hWnd = lphc->self;
1179 if( lphc->wState & CBF_FOCUSED )
1181 CBRollUp( lphc, FALSE, TRUE );
1182 if( IsWindow( hWnd ) )
1184 if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1185 SendMessageW(lphc->hWndLBox, LB_CARETOFF, 0, 0);
1187 lphc->wState &= ~CBF_FOCUSED;
1190 if( !(lphc->wState & CBF_EDIT) )
1191 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1193 CB_NOTIFY( lphc, CBN_KILLFOCUS );
1198 /***********************************************************************
1201 static LRESULT COMBO_Command( LPHEADCOMBO lphc, WPARAM wParam, HWND hWnd )
1203 if ( lphc->wState & CBF_EDIT && lphc->hWndEdit == hWnd )
1205 /* ">> 8" makes gcc generate jump-table instead of cmp ladder */
1207 switch( HIWORD(wParam) >> 8 )
1209 case (EN_SETFOCUS >> 8):
1211 TRACE("[%p]: edit [%p] got focus\n", lphc->self, lphc->hWndEdit );
1213 COMBO_SetFocus( lphc );
1216 case (EN_KILLFOCUS >> 8):
1218 TRACE("[%p]: edit [%p] lost focus\n", lphc->self, lphc->hWndEdit );
1220 /* NOTE: it seems that Windows' edit control sends an
1221 * undocumented message WM_USER + 0x1B instead of this
1222 * notification (only when it happens to be a part of
1223 * the combo). ?? - AK.
1226 COMBO_KillFocus( lphc );
1230 case (EN_CHANGE >> 8):
1232 * In some circumstances (when the selection of the combobox
1233 * is changed for example) we don't want the EN_CHANGE notification
1234 * to be forwarded to the parent of the combobox. This code
1235 * checks a flag that is set in these occasions and ignores the
1238 if (lphc->wState & CBF_NOLBSELECT)
1240 lphc->wState &= ~CBF_NOLBSELECT;
1244 CBUpdateLBox( lphc, lphc->wState & CBF_DROPPED );
1247 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1248 CB_NOTIFY( lphc, CBN_EDITCHANGE );
1251 case (EN_UPDATE >> 8):
1252 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1253 CB_NOTIFY( lphc, CBN_EDITUPDATE );
1256 case (EN_ERRSPACE >> 8):
1257 CB_NOTIFY( lphc, CBN_ERRSPACE );
1260 else if( lphc->hWndLBox == hWnd )
1262 switch( (short)HIWORD(wParam) )
1265 CB_NOTIFY( lphc, CBN_ERRSPACE );
1269 CB_NOTIFY( lphc, CBN_DBLCLK );
1275 TRACE("[%p]: lbox selection change [%x]\n", lphc->self, lphc->wState );
1277 /* do not roll up if selection is being tracked
1278 * by arrow keys in the dropdown listbox */
1279 if (!(lphc->wState & CBF_NOROLLUP))
1281 CBRollUp( lphc, (HIWORD(wParam) == LBN_SELCHANGE), TRUE );
1283 else lphc->wState &= ~CBF_NOROLLUP;
1285 CB_NOTIFY( lphc, CBN_SELCHANGE );
1287 if( HIWORD(wParam) == LBN_SELCHANGE)
1289 if( lphc->wState & CBF_EDIT )
1291 INT index = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1292 lphc->wState |= CBF_NOLBSELECT;
1293 CBUpdateEdit( lphc, index );
1294 /* select text in edit, as Windows does */
1295 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);
1299 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1300 UpdateWindow(lphc->self);
1307 /* nothing to do here since ComboLBox always resets the focus to its
1308 * combo/edit counterpart */
1315 /***********************************************************************
1318 * Fixup an ownerdrawn item operation and pass it up to the combobox owner.
1320 static LRESULT COMBO_ItemOp( LPHEADCOMBO lphc, UINT msg, LPARAM lParam )
1322 HWND hWnd = lphc->self;
1323 UINT id = (UINT)GetWindowLongPtrW( hWnd, GWLP_ID );
1325 TRACE("[%p]: ownerdraw op %04x\n", lphc->self, msg );
1331 DELETEITEMSTRUCT *lpIS = (DELETEITEMSTRUCT *)lParam;
1332 lpIS->CtlType = ODT_COMBOBOX;
1334 lpIS->hwndItem = hWnd;
1339 DRAWITEMSTRUCT *lpIS = (DRAWITEMSTRUCT *)lParam;
1340 lpIS->CtlType = ODT_COMBOBOX;
1342 lpIS->hwndItem = hWnd;
1345 case WM_COMPAREITEM:
1347 COMPAREITEMSTRUCT *lpIS = (COMPAREITEMSTRUCT *)lParam;
1348 lpIS->CtlType = ODT_COMBOBOX;
1350 lpIS->hwndItem = hWnd;
1353 case WM_MEASUREITEM:
1355 MEASUREITEMSTRUCT *lpIS = (MEASUREITEMSTRUCT *)lParam;
1356 lpIS->CtlType = ODT_COMBOBOX;
1361 return SendMessageW(lphc->owner, msg, id, lParam);
1365 /***********************************************************************
1368 static LRESULT COMBO_GetTextW( LPHEADCOMBO lphc, INT count, LPWSTR buf )
1372 if( lphc->wState & CBF_EDIT )
1373 return SendMessageW( lphc->hWndEdit, WM_GETTEXT, count, (LPARAM)buf );
1375 /* get it from the listbox */
1377 if (!count || !buf) return 0;
1378 if( lphc->hWndLBox )
1380 INT idx = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1381 if (idx == LB_ERR) goto error;
1382 length = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, idx, 0 );
1383 if (length == LB_ERR) goto error;
1385 /* 'length' is without the terminating character */
1386 if (length >= count)
1388 LPWSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
1389 if (!lpBuffer) goto error;
1390 length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);
1392 /* truncate if buffer is too short */
1393 if (length != LB_ERR)
1395 lstrcpynW( buf, lpBuffer, count );
1398 HeapFree( GetProcessHeap(), 0, lpBuffer );
1400 else length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);
1402 if (length == LB_ERR) return 0;
1406 error: /* error - truncate string, return zero */
1412 /***********************************************************************
1415 * NOTE! LB_GETTEXT does not count terminating \0, WM_GETTEXT does.
1416 * also LB_GETTEXT might return values < 0, WM_GETTEXT doesn't.
1418 static LRESULT COMBO_GetTextA( LPHEADCOMBO lphc, INT count, LPSTR buf )
1422 if( lphc->wState & CBF_EDIT )
1423 return SendMessageA( lphc->hWndEdit, WM_GETTEXT, count, (LPARAM)buf );
1425 /* get it from the listbox */
1427 if (!count || !buf) return 0;
1428 if( lphc->hWndLBox )
1430 INT idx = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1431 if (idx == LB_ERR) goto error;
1432 length = SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, idx, 0 );
1433 if (length == LB_ERR) goto error;
1435 /* 'length' is without the terminating character */
1436 if (length >= count)
1438 LPSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) );
1439 if (!lpBuffer) goto error;
1440 length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);
1442 /* truncate if buffer is too short */
1443 if (length != LB_ERR)
1445 lstrcpynA( buf, lpBuffer, count );
1448 HeapFree( GetProcessHeap(), 0, lpBuffer );
1450 else length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);
1452 if (length == LB_ERR) return 0;
1456 error: /* error - truncate string, return zero */
1462 /***********************************************************************
1465 * This function sets window positions according to the updated
1466 * component placement struct.
1468 static void CBResetPos(
1470 const RECT *rectEdit,
1474 BOOL bDrop = (CB_GETTYPE(lphc) != CBS_SIMPLE);
1476 /* NOTE: logs sometimes have WM_LBUTTONUP before a cascade of
1477 * sizing messages */
1479 if( lphc->wState & CBF_EDIT )
1480 SetWindowPos( lphc->hWndEdit, 0,
1481 rectEdit->left, rectEdit->top,
1482 rectEdit->right - rectEdit->left,
1483 rectEdit->bottom - rectEdit->top,
1484 SWP_NOZORDER | SWP_NOACTIVATE | ((bDrop) ? SWP_NOREDRAW : 0) );
1486 SetWindowPos( lphc->hWndLBox, 0,
1487 rectLB->left, rectLB->top,
1488 rectLB->right - rectLB->left,
1489 rectLB->bottom - rectLB->top,
1490 SWP_NOACTIVATE | SWP_NOZORDER | ((bDrop) ? SWP_NOREDRAW : 0) );
1494 if( lphc->wState & CBF_DROPPED )
1496 lphc->wState &= ~CBF_DROPPED;
1497 ShowWindow( lphc->hWndLBox, SW_HIDE );
1500 if( bRedraw && !(lphc->wState & CBF_NOREDRAW) )
1501 RedrawWindow( lphc->self, NULL, 0,
1502 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW );
1507 /***********************************************************************
1510 static void COMBO_Size( LPHEADCOMBO lphc )
1513 * Those controls are always the same height. So we have to make sure
1514 * they are not resized to another value.
1516 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
1518 int newComboHeight, curComboHeight, curComboWidth;
1521 GetWindowRect(lphc->self, &rc);
1522 curComboHeight = rc.bottom - rc.top;
1523 curComboWidth = rc.right - rc.left;
1524 newComboHeight = CBGetTextAreaHeight(lphc->self, lphc) + 2*COMBO_YBORDERSIZE();
1527 * Resizing a combobox has another side effect, it resizes the dropped
1528 * rectangle as well. However, it does it only if the new height for the
1529 * combobox is more than the height it should have. In other words,
1530 * if the application resizing the combobox only had the intention to resize
1531 * the actual control, for example, to do the layout of a dialog that is
1532 * resized, the height of the dropdown is not changed.
1534 if( curComboHeight > newComboHeight )
1536 TRACE("oldComboHeight=%d, newComboHeight=%d, oldDropBottom=%d, oldDropTop=%d\n",
1537 curComboHeight, newComboHeight, lphc->droppedRect.bottom,
1538 lphc->droppedRect.top);
1539 lphc->droppedRect.bottom = lphc->droppedRect.top + curComboHeight - newComboHeight;
1542 * Restore original height
1544 if( curComboHeight != newComboHeight )
1545 SetWindowPos(lphc->self, 0, 0, 0, curComboWidth, newComboHeight,
1546 SWP_NOZORDER|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOREDRAW);
1549 CBCalcPlacement(lphc->self,
1553 &lphc->droppedRect);
1555 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1559 /***********************************************************************
1562 static void COMBO_Font( LPHEADCOMBO lphc, HFONT hFont, BOOL bRedraw )
1567 lphc->hFont = hFont;
1570 * Propagate to owned windows.
1572 if( lphc->wState & CBF_EDIT )
1573 SendMessageW(lphc->hWndEdit, WM_SETFONT, (WPARAM)hFont, bRedraw);
1574 SendMessageW(lphc->hWndLBox, WM_SETFONT, (WPARAM)hFont, bRedraw);
1577 * Redo the layout of the control.
1579 if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1581 CBCalcPlacement(lphc->self,
1585 &lphc->droppedRect);
1587 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1591 CBForceDummyResize(lphc);
1596 /***********************************************************************
1597 * COMBO_SetItemHeight
1599 static LRESULT COMBO_SetItemHeight( LPHEADCOMBO lphc, INT index, INT height )
1601 LRESULT lRet = CB_ERR;
1603 if( index == -1 ) /* set text field height */
1605 if( height < 32768 )
1607 lphc->editHeight = height + 2; /* Is the 2 for 2*EDIT_CONTROL_PADDING? */
1610 * Redo the layout of the control.
1612 if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1614 CBCalcPlacement(lphc->self,
1618 &lphc->droppedRect);
1620 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1624 CBForceDummyResize(lphc);
1630 else if ( CB_OWNERDRAWN(lphc) ) /* set listbox item height */
1631 lRet = SendMessageW(lphc->hWndLBox, LB_SETITEMHEIGHT, index, height);
1635 /***********************************************************************
1636 * COMBO_SelectString
1638 static LRESULT COMBO_SelectString( LPHEADCOMBO lphc, INT start, LPARAM pText, BOOL unicode )
1640 INT index = unicode ? SendMessageW(lphc->hWndLBox, LB_SELECTSTRING, start, pText) :
1641 SendMessageA(lphc->hWndLBox, LB_SELECTSTRING, start, pText);
1644 if( lphc->wState & CBF_EDIT )
1645 CBUpdateEdit( lphc, index );
1648 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1651 return (LRESULT)index;
1654 /***********************************************************************
1657 static void COMBO_LButtonDown( LPHEADCOMBO lphc, LPARAM lParam )
1661 HWND hWnd = lphc->self;
1663 pt.x = (short)LOWORD(lParam);
1664 pt.y = (short)HIWORD(lParam);
1665 bButton = PtInRect(&lphc->buttonRect, pt);
1667 if( (CB_GETTYPE(lphc) == CBS_DROPDOWNLIST) ||
1668 (bButton && (CB_GETTYPE(lphc) == CBS_DROPDOWN)) )
1670 lphc->wState |= CBF_BUTTONDOWN;
1671 if( lphc->wState & CBF_DROPPED )
1673 /* got a click to cancel selection */
1675 lphc->wState &= ~CBF_BUTTONDOWN;
1676 CBRollUp( lphc, TRUE, FALSE );
1677 if( !IsWindow( hWnd ) ) return;
1679 if( lphc->wState & CBF_CAPTURE )
1681 lphc->wState &= ~CBF_CAPTURE;
1687 /* drop down the listbox and start tracking */
1689 lphc->wState |= CBF_CAPTURE;
1693 if( bButton ) CBRepaintButton( lphc );
1697 /***********************************************************************
1700 * Release capture and stop tracking if needed.
1702 static void COMBO_LButtonUp( LPHEADCOMBO lphc )
1704 if( lphc->wState & CBF_CAPTURE )
1706 lphc->wState &= ~CBF_CAPTURE;
1707 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1709 INT index = CBUpdateLBox( lphc, TRUE );
1710 /* Update edit only if item is in the list */
1713 lphc->wState |= CBF_NOLBSELECT;
1714 CBUpdateEdit( lphc, index );
1715 lphc->wState &= ~CBF_NOLBSELECT;
1719 SetCapture(lphc->hWndLBox);
1722 if( lphc->wState & CBF_BUTTONDOWN )
1724 lphc->wState &= ~CBF_BUTTONDOWN;
1725 CBRepaintButton( lphc );
1729 /***********************************************************************
1732 * Two things to do - track combo button and release capture when
1733 * pointer goes into the listbox.
1735 static void COMBO_MouseMove( LPHEADCOMBO lphc, WPARAM wParam, LPARAM lParam )
1740 pt.x = (short)LOWORD(lParam);
1741 pt.y = (short)HIWORD(lParam);
1743 if( lphc->wState & CBF_BUTTONDOWN )
1747 bButton = PtInRect(&lphc->buttonRect, pt);
1751 lphc->wState &= ~CBF_BUTTONDOWN;
1752 CBRepaintButton( lphc );
1756 GetClientRect( lphc->hWndLBox, &lbRect );
1757 MapWindowPoints( lphc->self, lphc->hWndLBox, &pt, 1 );
1758 if( PtInRect(&lbRect, pt) )
1760 lphc->wState &= ~CBF_CAPTURE;
1762 if( CB_GETTYPE(lphc) == CBS_DROPDOWN ) CBUpdateLBox( lphc, TRUE );
1764 /* hand over pointer tracking */
1765 SendMessageW(lphc->hWndLBox, WM_LBUTTONDOWN, wParam, lParam);
1769 static LRESULT COMBO_GetComboBoxInfo(const HEADCOMBO *lphc, COMBOBOXINFO *pcbi)
1771 if (!pcbi || (pcbi->cbSize < sizeof(COMBOBOXINFO)))
1774 pcbi->rcItem = lphc->textRect;
1775 pcbi->rcButton = lphc->buttonRect;
1776 pcbi->stateButton = 0;
1777 if (lphc->wState & CBF_BUTTONDOWN)
1778 pcbi->stateButton |= STATE_SYSTEM_PRESSED;
1779 if (IsRectEmpty(&lphc->buttonRect))
1780 pcbi->stateButton |= STATE_SYSTEM_INVISIBLE;
1781 pcbi->hwndCombo = lphc->self;
1782 pcbi->hwndItem = lphc->hWndEdit;
1783 pcbi->hwndList = lphc->hWndLBox;
1787 static char *strdupA(LPCSTR str)
1792 if(!str) return NULL;
1795 ret = HeapAlloc(GetProcessHeap(), 0, len + 1);
1796 memcpy(ret, str, len + 1);
1800 /***********************************************************************
1801 * ComboWndProc_common
1803 LRESULT ComboWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam, BOOL unicode )
1805 LPHEADCOMBO lphc = (LPHEADCOMBO)GetWindowLongPtrW( hwnd, 0 );
1807 TRACE("[%p]: msg %s wp %08lx lp %08lx\n",
1808 hwnd, SPY_GetMsgName(message, hwnd), wParam, lParam );
1810 if (!IsWindow(hwnd)) return 0;
1812 if( lphc || message == WM_NCCREATE )
1816 /* System messages */
1820 LONG style = unicode ? ((LPCREATESTRUCTW)lParam)->style :
1821 ((LPCREATESTRUCTA)lParam)->style;
1822 return COMBO_NCCreate(hwnd, style);
1825 COMBO_NCDestroy(lphc);
1826 break;/* -> DefWindowProc */
1834 hwndParent = ((LPCREATESTRUCTW)lParam)->hwndParent;
1835 style = ((LPCREATESTRUCTW)lParam)->style;
1839 hwndParent = ((LPCREATESTRUCTA)lParam)->hwndParent;
1840 style = ((LPCREATESTRUCTA)lParam)->style;
1842 return COMBO_Create(hwnd, lphc, hwndParent, style, unicode);
1845 case WM_PRINTCLIENT:
1848 /* wParam may contain a valid HDC! */
1849 return COMBO_Paint(lphc, (HDC)wParam);
1852 /* do all painting in WM_PAINT like Windows does */
1857 LRESULT result = DLGC_WANTARROWS | DLGC_WANTCHARS;
1858 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
1860 int vk = (int)((LPMSG)lParam)->wParam;
1862 if ((vk == VK_RETURN || vk == VK_ESCAPE) && (lphc->wState & CBF_DROPPED))
1863 result |= DLGC_WANTMESSAGE;
1868 if( lphc->hWndLBox &&
1869 !(lphc->wState & CBF_NORESIZE) ) COMBO_Size( lphc );
1872 COMBO_Font( lphc, (HFONT)wParam, (BOOL)lParam );
1875 return (LRESULT)lphc->hFont;
1877 if( lphc->wState & CBF_EDIT ) {
1878 SetFocus( lphc->hWndEdit );
1879 /* The first time focus is received, select all the text */
1880 if( !(lphc->wState & CBF_BEENFOCUSED) ) {
1881 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);
1882 lphc->wState |= CBF_BEENFOCUSED;
1886 COMBO_SetFocus( lphc );
1890 HWND hwndFocus = WIN_GetFullHandle( (HWND)wParam );
1892 (hwndFocus != lphc->hWndEdit && hwndFocus != lphc->hWndLBox ))
1893 COMBO_KillFocus( lphc );
1897 return COMBO_Command( lphc, wParam, WIN_GetFullHandle( (HWND)lParam ) );
1899 return unicode ? COMBO_GetTextW( lphc, wParam, (LPWSTR)lParam )
1900 : COMBO_GetTextA( lphc, wParam, (LPSTR)lParam );
1902 case WM_GETTEXTLENGTH:
1904 if ((message == WM_GETTEXTLENGTH) && !ISWIN31 && !(lphc->wState & CBF_EDIT))
1906 int j = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1907 if (j == -1) return 0;
1908 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, j, 0) :
1909 SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, j, 0);
1911 else if( lphc->wState & CBF_EDIT )
1914 lphc->wState |= CBF_NOEDITNOTIFY;
1915 ret = unicode ? SendMessageW(lphc->hWndEdit, message, wParam, lParam) :
1916 SendMessageA(lphc->hWndEdit, message, wParam, lParam);
1917 lphc->wState &= ~CBF_NOEDITNOTIFY;
1924 if( lphc->wState & CBF_EDIT )
1926 return unicode ? SendMessageW(lphc->hWndEdit, message, wParam, lParam) :
1927 SendMessageA(lphc->hWndEdit, message, wParam, lParam);
1933 case WM_COMPAREITEM:
1934 case WM_MEASUREITEM:
1935 return COMBO_ItemOp(lphc, message, lParam);
1937 if( lphc->wState & CBF_EDIT )
1938 EnableWindow( lphc->hWndEdit, (BOOL)wParam );
1939 EnableWindow( lphc->hWndLBox, (BOOL)wParam );
1941 /* Force the control to repaint when the enabled state changes. */
1942 InvalidateRect(lphc->self, NULL, TRUE);
1946 lphc->wState &= ~CBF_NOREDRAW;
1948 lphc->wState |= CBF_NOREDRAW;
1950 if( lphc->wState & CBF_EDIT )
1951 SendMessageW(lphc->hWndEdit, message, wParam, lParam);
1952 SendMessageW(lphc->hWndLBox, message, wParam, lParam);
1955 if( KEYDATA_ALT & HIWORD(lParam) )
1956 if( wParam == VK_UP || wParam == VK_DOWN )
1957 COMBO_FlipListbox( lphc, FALSE, FALSE );
1961 if ((wParam == VK_RETURN || wParam == VK_ESCAPE) &&
1962 (lphc->wState & CBF_DROPPED))
1964 CBRollUp( lphc, wParam == VK_RETURN, FALSE );
1967 else if ((wParam == VK_F4) && !(lphc->wState & CBF_EUI))
1969 COMBO_FlipListbox( lphc, FALSE, FALSE );
1978 if( lphc->wState & CBF_EDIT )
1979 hwndTarget = lphc->hWndEdit;
1981 hwndTarget = lphc->hWndLBox;
1983 return unicode ? SendMessageW(hwndTarget, message, wParam, lParam) :
1984 SendMessageA(hwndTarget, message, wParam, lParam);
1986 case WM_LBUTTONDOWN:
1987 if( !(lphc->wState & CBF_FOCUSED) ) SetFocus( lphc->self );
1988 if( lphc->wState & CBF_FOCUSED ) COMBO_LButtonDown( lphc, lParam );
1991 COMBO_LButtonUp( lphc );
1994 if( lphc->wState & CBF_CAPTURE )
1995 COMBO_MouseMove( lphc, wParam, lParam );
1999 if (wParam & (MK_SHIFT | MK_CONTROL))
2000 return unicode ? DefWindowProcW(hwnd, message, wParam, lParam) :
2001 DefWindowProcA(hwnd, message, wParam, lParam);
2003 if (GET_WHEEL_DELTA_WPARAM(wParam) > 0) return SendMessageW(hwnd, WM_KEYDOWN, VK_UP, 0);
2004 if (GET_WHEEL_DELTA_WPARAM(wParam) < 0) return SendMessageW(hwnd, WM_KEYDOWN, VK_DOWN, 0);
2007 /* Combo messages */
2012 if( lphc->dwStyle & CBS_LOWERCASE )
2013 CharLowerW((LPWSTR)lParam);
2014 else if( lphc->dwStyle & CBS_UPPERCASE )
2015 CharUpperW((LPWSTR)lParam);
2016 return SendMessageW(lphc->hWndLBox, LB_ADDSTRING, 0, lParam);
2018 else /* unlike the unicode version, the ansi version does not overwrite
2019 the string if converting case */
2021 char *string = NULL;
2023 if( lphc->dwStyle & CBS_LOWERCASE )
2025 string = strdupA((LPSTR)lParam);
2029 else if( lphc->dwStyle & CBS_UPPERCASE )
2031 string = strdupA((LPSTR)lParam);
2035 ret = SendMessageA(lphc->hWndLBox, LB_ADDSTRING, 0, string ? (LPARAM)string : lParam);
2036 HeapFree(GetProcessHeap(), 0, string);
2039 case CB_INSERTSTRING:
2042 if( lphc->dwStyle & CBS_LOWERCASE )
2043 CharLowerW((LPWSTR)lParam);
2044 else if( lphc->dwStyle & CBS_UPPERCASE )
2045 CharUpperW((LPWSTR)lParam);
2046 return SendMessageW(lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
2050 if( lphc->dwStyle & CBS_LOWERCASE )
2051 CharLowerA((LPSTR)lParam);
2052 else if( lphc->dwStyle & CBS_UPPERCASE )
2053 CharUpperA((LPSTR)lParam);
2055 return SendMessageA(lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
2057 case CB_DELETESTRING:
2058 return unicode ? SendMessageW(lphc->hWndLBox, LB_DELETESTRING, wParam, 0) :
2059 SendMessageA(lphc->hWndLBox, LB_DELETESTRING, wParam, 0);
2060 case CB_SELECTSTRING:
2061 return COMBO_SelectString(lphc, (INT)wParam, lParam, unicode);
2063 return unicode ? SendMessageW(lphc->hWndLBox, LB_FINDSTRING, wParam, lParam) :
2064 SendMessageA(lphc->hWndLBox, LB_FINDSTRING, wParam, lParam);
2065 case CB_FINDSTRINGEXACT:
2066 return unicode ? SendMessageW(lphc->hWndLBox, LB_FINDSTRINGEXACT, wParam, lParam) :
2067 SendMessageA(lphc->hWndLBox, LB_FINDSTRINGEXACT, wParam, lParam);
2068 case CB_SETITEMHEIGHT:
2069 return COMBO_SetItemHeight( lphc, (INT)wParam, (INT)lParam);
2070 case CB_GETITEMHEIGHT:
2071 if( (INT)wParam >= 0 ) /* listbox item */
2072 return SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, wParam, 0);
2073 return CBGetTextAreaHeight(hwnd, lphc);
2074 case CB_RESETCONTENT:
2075 SendMessageW(lphc->hWndLBox, LB_RESETCONTENT, 0, 0);
2076 if( (lphc->wState & CBF_EDIT) && CB_HASSTRINGS(lphc) )
2078 static const WCHAR empty_stringW[] = { 0 };
2079 SendMessageW(lphc->hWndEdit, WM_SETTEXT, 0, (LPARAM)empty_stringW);
2082 InvalidateRect(lphc->self, NULL, TRUE);
2084 case CB_INITSTORAGE:
2085 return SendMessageW(lphc->hWndLBox, LB_INITSTORAGE, wParam, lParam);
2086 case CB_GETHORIZONTALEXTENT:
2087 return SendMessageW(lphc->hWndLBox, LB_GETHORIZONTALEXTENT, 0, 0);
2088 case CB_SETHORIZONTALEXTENT:
2089 return SendMessageW(lphc->hWndLBox, LB_SETHORIZONTALEXTENT, wParam, 0);
2090 case CB_GETTOPINDEX:
2091 return SendMessageW(lphc->hWndLBox, LB_GETTOPINDEX, 0, 0);
2093 return SendMessageW(lphc->hWndLBox, LB_GETLOCALE, 0, 0);
2095 return SendMessageW(lphc->hWndLBox, LB_SETLOCALE, wParam, 0);
2096 case CB_SETDROPPEDWIDTH:
2097 if( (CB_GETTYPE(lphc) == CBS_SIMPLE) ||
2098 (INT)wParam >= 32768 )
2100 /* new value must be higher than combobox width */
2101 if((INT)wParam >= lphc->droppedRect.right - lphc->droppedRect.left)
2102 lphc->droppedWidth = wParam;
2104 lphc->droppedWidth = 0;
2106 /* recalculate the combobox area */
2107 CBCalcPlacement(hwnd, lphc, &lphc->textRect, &lphc->buttonRect, &lphc->droppedRect );
2110 case CB_GETDROPPEDWIDTH:
2111 if( lphc->droppedWidth )
2112 return lphc->droppedWidth;
2113 return lphc->droppedRect.right - lphc->droppedRect.left;
2114 case CB_GETDROPPEDCONTROLRECT:
2115 if( lParam ) CBGetDroppedControlRect(lphc, (LPRECT)lParam );
2117 case CB_GETDROPPEDSTATE:
2118 return (lphc->wState & CBF_DROPPED) != 0;
2120 return unicode ? SendMessageW(lphc->hWndLBox, LB_DIR, wParam, lParam) :
2121 SendMessageA(lphc->hWndLBox, LB_DIR, wParam, lParam);
2123 case CB_SHOWDROPDOWN:
2124 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
2128 if( !(lphc->wState & CBF_DROPPED) )
2132 if( lphc->wState & CBF_DROPPED )
2133 CBRollUp( lphc, FALSE, TRUE );
2137 return SendMessageW(lphc->hWndLBox, LB_GETCOUNT, 0, 0);
2139 return SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
2141 lParam = SendMessageW(lphc->hWndLBox, LB_SETCURSEL, wParam, 0);
2143 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX, wParam, 0);
2145 /* no LBN_SELCHANGE in this case, update manually */
2146 if( lphc->wState & CBF_EDIT )
2147 CBUpdateEdit( lphc, (INT)wParam );
2149 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
2150 lphc->wState &= ~CBF_SELCHANGE;
2153 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXT, wParam, lParam) :
2154 SendMessageA(lphc->hWndLBox, LB_GETTEXT, wParam, lParam);
2155 case CB_GETLBTEXTLEN:
2156 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0) :
2157 SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0);
2158 case CB_GETITEMDATA:
2159 return SendMessageW(lphc->hWndLBox, LB_GETITEMDATA, wParam, 0);
2160 case CB_SETITEMDATA:
2161 return SendMessageW(lphc->hWndLBox, LB_SETITEMDATA, wParam, lParam);
2163 /* Edit checks passed parameters itself */
2164 if( lphc->wState & CBF_EDIT )
2165 return SendMessageW(lphc->hWndEdit, EM_GETSEL, wParam, lParam);
2168 if( lphc->wState & CBF_EDIT )
2169 return SendMessageW(lphc->hWndEdit, EM_SETSEL,
2170 (INT)(SHORT)LOWORD(lParam), (INT)(SHORT)HIWORD(lParam) );
2172 case CB_SETEXTENDEDUI:
2173 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
2176 lphc->wState |= CBF_EUI;
2177 else lphc->wState &= ~CBF_EUI;
2179 case CB_GETEXTENDEDUI:
2180 return (lphc->wState & CBF_EUI) != 0;
2181 case CB_GETCOMBOBOXINFO:
2182 return COMBO_GetComboBoxInfo(lphc, (COMBOBOXINFO *)lParam);
2184 if( lphc->wState & CBF_EDIT )
2185 return SendMessageW(lphc->hWndEdit, EM_LIMITTEXT, wParam, lParam);
2188 if (message >= WM_USER)
2189 WARN("unknown msg WM_USER+%04x wp=%04lx lp=%08lx\n",
2190 message - WM_USER, wParam, lParam );
2193 return unicode ? DefWindowProcW(hwnd, message, wParam, lParam) :
2194 DefWindowProcA(hwnd, message, wParam, lParam);
2197 /*************************************************************************
2198 * GetComboBoxInfo (USER32.@)
2200 BOOL WINAPI GetComboBoxInfo(HWND hwndCombo, /* [in] handle to combo box */
2201 PCOMBOBOXINFO pcbi /* [in/out] combo box information */)
2203 TRACE("(%p, %p)\n", hwndCombo, pcbi);
2204 return SendMessageW(hwndCombo, CB_GETCOMBOBOXINFO, 0, (LPARAM)pcbi);