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[reactos.git] / win32ss / user / user32 / controls / combo.c
1 /*
2 * Combo controls
3 *
4 * Copyright 1997 Alex Korobka
5 *
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.
10 *
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.
15 *
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
19 *
20 * TODO:
21 * - CB_SETTOPINDEX
22 */
23
24 #include <user32.h>
25
26 WINE_DEFAULT_DEBUG_CHANNEL(combo);
27
28 /*
29 * Additional combo box definitions
30 */
31
32 #define CB_NOTIFY( lphc, code ) \
33 (SendMessageW((lphc)->owner, WM_COMMAND, \
34 MAKEWPARAM(GetWindowLongPtrW((lphc)->self,GWLP_ID), (code)), (LPARAM)(lphc)->self))
35
36 #define CB_DISABLED( lphc ) (!IsWindowEnabled((lphc)->self))
37 #define CB_OWNERDRAWN( lphc ) ((lphc)->dwStyle & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE))
38 #define CB_HASSTRINGS( lphc ) ((lphc)->dwStyle & CBS_HASSTRINGS)
39 #define CB_HWND( lphc ) ((lphc)->self)
40 #ifndef __REACTOS__
41 /* ReactOS already define in include/controls.h We have it here as a sync note. */
42 #define CB_GETTYPE( lphc ) ((lphc)->dwStyle & (CBS_DROPDOWNLIST))
43 #endif
44
45 #define ISWIN31 (LOWORD(GetVersion()) == 0x0a03)
46
47 /*
48 * Drawing globals
49 */
50 static HBITMAP hComboBmp = 0;
51 static UINT CBitHeight, CBitWidth;
52
53 /*
54 * Look and feel dependent "constants"
55 */
56
57 #define COMBO_YBORDERGAP 5
58 #define COMBO_XBORDERSIZE() 2
59 #define COMBO_YBORDERSIZE() 2
60 #define COMBO_EDITBUTTONSPACE() 0
61 #define EDIT_CONTROL_PADDING() 1
62
63 /*********************************************************************
64 * combo class descriptor
65 */
66 static const WCHAR comboboxW[] = {'C','o','m','b','o','B','o','x',0};
67 const struct builtin_class_descr COMBO_builtin_class =
68 {
69 comboboxW, /* name */
70 CS_PARENTDC | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW, /* style */
71 #ifdef __REACTOS__
72 ComboWndProcA, /* procA */
73 ComboWndProcW, /* procW */
74 #else
75 WINPROC_COMBO, /* proc */
76 #endif
77 sizeof(HEADCOMBO *), /* extra */
78 IDC_ARROW, /* cursor */
79 0 /* brush */
80 };
81
82
83 /***********************************************************************
84 * COMBO_Init
85 *
86 * Load combo button bitmap.
87 */
88 static BOOL COMBO_Init(void)
89 {
90 HDC hDC;
91
92 if( hComboBmp ) return TRUE;
93 if( (hDC = CreateCompatibleDC(0)) )
94 {
95 BOOL bRet = FALSE;
96 if( (hComboBmp = LoadBitmapW(0, MAKEINTRESOURCEW(OBM_COMBO))) )
97 {
98 BITMAP bm;
99 HBITMAP hPrevB;
100 RECT r;
101
102 GetObjectW( hComboBmp, sizeof(bm), &bm );
103 CBitHeight = bm.bmHeight;
104 CBitWidth = bm.bmWidth;
105
106 TRACE("combo bitmap [%i,%i]\n", CBitWidth, CBitHeight );
107
108 hPrevB = SelectObject( hDC, hComboBmp);
109 SetRect( &r, 0, 0, CBitWidth, CBitHeight );
110 InvertRect( hDC, &r );
111 SelectObject( hDC, hPrevB );
112 bRet = TRUE;
113 }
114 DeleteDC( hDC );
115 return bRet;
116 }
117 return FALSE;
118 }
119
120 #ifdef __REACTOS__
121 /* Retrieve the UI state for the control */
122 static BOOL COMBO_update_uistate(LPHEADCOMBO lphc)
123 {
124 LONG prev_flags;
125
126 prev_flags = lphc->UIState;
127 lphc->UIState = DefWindowProcW(lphc->self, WM_QUERYUISTATE, 0, 0);
128 return prev_flags != lphc->UIState;
129 }
130 #endif
131
132 /***********************************************************************
133 * COMBO_NCCreate
134 */
135 static LRESULT COMBO_NCCreate(HWND hwnd, LONG style)
136 {
137 LPHEADCOMBO lphc;
138
139 if (COMBO_Init() && (lphc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(HEADCOMBO))) )
140 {
141 lphc->self = hwnd;
142 SetWindowLongPtrW( hwnd, 0, (LONG_PTR)lphc );
143
144 #ifdef __REACTOS__
145 COMBO_update_uistate(lphc);
146 #endif
147
148 /* some braindead apps do try to use scrollbar/border flags */
149
150 lphc->dwStyle = style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL);
151 SetWindowLongPtrW( hwnd, GWL_STYLE, style & ~(WS_BORDER | WS_HSCROLL | WS_VSCROLL) );
152
153 /*
154 * We also have to remove the client edge style to make sure
155 * we don't end-up with a non client area.
156 */
157 SetWindowLongPtrW( hwnd, GWL_EXSTYLE,
158 GetWindowLongPtrW( hwnd, GWL_EXSTYLE ) & ~WS_EX_CLIENTEDGE );
159
160 if( !(style & (CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE)) )
161 lphc->dwStyle |= CBS_HASSTRINGS;
162 if( !(GetWindowLongPtrW( hwnd, GWL_EXSTYLE ) & WS_EX_NOPARENTNOTIFY) )
163 lphc->wState |= CBF_NOTIFY;
164
165 TRACE("[%p], style = %08x\n", lphc, lphc->dwStyle );
166 return TRUE;
167 }
168 return FALSE;
169 }
170
171 /***********************************************************************
172 * COMBO_NCDestroy
173 */
174 static LRESULT COMBO_NCDestroy( LPHEADCOMBO lphc )
175 {
176
177 if( lphc )
178 {
179 TRACE("[%p]: freeing storage\n", lphc->self);
180
181 if( (CB_GETTYPE(lphc) != CBS_SIMPLE) && lphc->hWndLBox )
182 DestroyWindow( lphc->hWndLBox );
183
184 SetWindowLongPtrW( lphc->self, 0, 0 );
185 HeapFree( GetProcessHeap(), 0, lphc );
186 }
187 return 0;
188 }
189
190 /***********************************************************************
191 * CBGetTextAreaHeight
192 *
193 * This method will calculate the height of the text area of the
194 * combobox.
195 * The height of the text area is set in two ways.
196 * It can be set explicitly through a combobox message or through a
197 * WM_MEASUREITEM callback.
198 * If this is not the case, the height is set to font height + 4px
199 * This height was determined through experimentation.
200 * CBCalcPlacement will add 2*COMBO_YBORDERSIZE pixels for the border
201 */
202 static INT CBGetTextAreaHeight(
203 HWND hwnd,
204 LPHEADCOMBO lphc)
205 {
206 INT iTextItemHeight;
207
208 if( lphc->editHeight ) /* explicitly set height */
209 {
210 iTextItemHeight = lphc->editHeight;
211 }
212 else
213 {
214 TEXTMETRICW tm;
215 HDC hDC = GetDC(hwnd);
216 HFONT hPrevFont = 0;
217 INT baseUnitY;
218
219 if (lphc->hFont)
220 hPrevFont = SelectObject( hDC, lphc->hFont );
221
222 GetTextMetricsW(hDC, &tm);
223
224 baseUnitY = tm.tmHeight;
225
226 if( hPrevFont )
227 SelectObject( hDC, hPrevFont );
228
229 ReleaseDC(hwnd, hDC);
230
231 iTextItemHeight = baseUnitY + 4;
232 }
233
234 /*
235 * Check the ownerdraw case if we haven't asked the parent the size
236 * of the item yet.
237 */
238 if ( CB_OWNERDRAWN(lphc) &&
239 (lphc->wState & CBF_MEASUREITEM) )
240 {
241 MEASUREITEMSTRUCT measureItem;
242 RECT clientRect;
243 INT originalItemHeight = iTextItemHeight;
244 UINT id = (UINT)GetWindowLongPtrW( lphc->self, GWLP_ID );
245
246 /*
247 * We use the client rect for the width of the item.
248 */
249 GetClientRect(hwnd, &clientRect);
250
251 lphc->wState &= ~CBF_MEASUREITEM;
252
253 /*
254 * Send a first one to measure the size of the text area
255 */
256 measureItem.CtlType = ODT_COMBOBOX;
257 measureItem.CtlID = id;
258 measureItem.itemID = -1;
259 measureItem.itemWidth = clientRect.right;
260 measureItem.itemHeight = iTextItemHeight - 6; /* ownerdrawn cb is taller */
261 measureItem.itemData = 0;
262 SendMessageW(lphc->owner, WM_MEASUREITEM, id, (LPARAM)&measureItem);
263 iTextItemHeight = 6 + measureItem.itemHeight;
264
265 /*
266 * Send a second one in the case of a fixed ownerdraw list to calculate the
267 * size of the list items. (we basically do this on behalf of the listbox)
268 */
269 if (lphc->dwStyle & CBS_OWNERDRAWFIXED)
270 {
271 measureItem.CtlType = ODT_COMBOBOX;
272 measureItem.CtlID = id;
273 measureItem.itemID = 0;
274 measureItem.itemWidth = clientRect.right;
275 measureItem.itemHeight = originalItemHeight;
276 measureItem.itemData = 0;
277 SendMessageW(lphc->owner, WM_MEASUREITEM, id, (LPARAM)&measureItem);
278 lphc->fixedOwnerDrawHeight = measureItem.itemHeight;
279 }
280
281 /*
282 * Keep the size for the next time
283 */
284 lphc->editHeight = iTextItemHeight;
285 }
286
287 return iTextItemHeight;
288 }
289
290 /***********************************************************************
291 * CBForceDummyResize
292 *
293 * The dummy resize is used for listboxes that have a popup to trigger
294 * a re-arranging of the contents of the combobox and the recalculation
295 * of the size of the "real" control window.
296 */
297 static void CBForceDummyResize(
298 LPHEADCOMBO lphc)
299 {
300 RECT windowRect;
301 int newComboHeight;
302
303 newComboHeight = CBGetTextAreaHeight(lphc->self,lphc) + 2*COMBO_YBORDERSIZE();
304
305 GetWindowRect(lphc->self, &windowRect);
306
307 /*
308 * We have to be careful, resizing a combobox also has the meaning that the
309 * dropped rect will be resized. In this case, we want to trigger a resize
310 * to recalculate layout but we don't want to change the dropped rectangle
311 * So, we pass the height of text area of control as the height.
312 * this will cancel-out in the processing of the WM_WINDOWPOSCHANGING
313 * message.
314 */
315 SetWindowPos( lphc->self,
316 NULL,
317 0, 0,
318 windowRect.right - windowRect.left,
319 newComboHeight,
320 SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE );
321 }
322
323 /***********************************************************************
324 * CBCalcPlacement
325 *
326 * Set up component coordinates given valid lphc->RectCombo.
327 */
328 static void CBCalcPlacement(
329 HWND hwnd,
330 LPHEADCOMBO lphc,
331 LPRECT lprEdit,
332 LPRECT lprButton,
333 LPRECT lprLB)
334 {
335 /*
336 * Again, start with the client rectangle.
337 */
338 GetClientRect(hwnd, lprEdit);
339
340 /*
341 * Remove the borders
342 */
343 InflateRect(lprEdit, -COMBO_XBORDERSIZE(), -COMBO_YBORDERSIZE());
344
345 /*
346 * Chop off the bottom part to fit with the height of the text area.
347 */
348 lprEdit->bottom = lprEdit->top + CBGetTextAreaHeight(hwnd, lphc);
349
350 /*
351 * The button starts the same vertical position as the text area.
352 */
353 CopyRect(lprButton, lprEdit);
354
355 /*
356 * If the combobox is "simple" there is no button.
357 */
358 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
359 lprButton->left = lprButton->right = lprButton->bottom = 0;
360 else
361 {
362 /*
363 * Let's assume the combobox button is the same width as the
364 * scrollbar button.
365 * size the button horizontally and cut-off the text area.
366 */
367 lprButton->left = lprButton->right - GetSystemMetrics(SM_CXVSCROLL);
368 lprEdit->right = lprButton->left;
369 }
370
371 /*
372 * In the case of a dropdown, there is an additional spacing between the
373 * text area and the button.
374 */
375 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
376 {
377 lprEdit->right -= COMBO_EDITBUTTONSPACE();
378 }
379
380 /*
381 * If we have an edit control, we space it away from the borders slightly.
382 */
383 if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
384 {
385 InflateRect(lprEdit, -EDIT_CONTROL_PADDING(), -EDIT_CONTROL_PADDING());
386 }
387
388 /*
389 * Adjust the size of the listbox popup.
390 */
391 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
392 {
393 /*
394 * Use the client rectangle to initialize the listbox rectangle
395 */
396 GetClientRect(hwnd, lprLB);
397
398 /*
399 * Then, chop-off the top part.
400 */
401 lprLB->top = lprEdit->bottom + COMBO_YBORDERSIZE();
402 }
403 else
404 {
405 /*
406 * Make sure the dropped width is as large as the combobox itself.
407 */
408 if (lphc->droppedWidth < (lprButton->right + COMBO_XBORDERSIZE()))
409 {
410 lprLB->right = lprLB->left + (lprButton->right + COMBO_XBORDERSIZE());
411
412 /*
413 * In the case of a dropdown, the popup listbox is offset to the right.
414 * so, we want to make sure it's flush with the right side of the
415 * combobox
416 */
417 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
418 lprLB->right -= COMBO_EDITBUTTONSPACE();
419 }
420 else
421 lprLB->right = lprLB->left + lphc->droppedWidth;
422 }
423
424 /* don't allow negative window width */
425 if (lprEdit->right < lprEdit->left)
426 lprEdit->right = lprEdit->left;
427
428 TRACE("\ttext\t= (%s)\n", wine_dbgstr_rect(lprEdit));
429
430 TRACE("\tbutton\t= (%s)\n", wine_dbgstr_rect(lprButton));
431
432 TRACE("\tlbox\t= (%s)\n", wine_dbgstr_rect(lprLB));
433 }
434
435 /***********************************************************************
436 * CBGetDroppedControlRect
437 */
438 static void CBGetDroppedControlRect( LPHEADCOMBO lphc, LPRECT lpRect)
439 {
440 /* In windows, CB_GETDROPPEDCONTROLRECT returns the upper left corner
441 of the combo box and the lower right corner of the listbox */
442
443 GetWindowRect(lphc->self, lpRect);
444
445 lpRect->right = lpRect->left + lphc->droppedRect.right - lphc->droppedRect.left;
446 lpRect->bottom = lpRect->top + lphc->droppedRect.bottom - lphc->droppedRect.top;
447
448 }
449
450 /***********************************************************************
451 * COMBO_Create
452 */
453 static LRESULT COMBO_Create( HWND hwnd, LPHEADCOMBO lphc, HWND hwndParent, LONG style,
454 BOOL unicode )
455 {
456 static const WCHAR clbName[] = {'C','o','m','b','o','L','B','o','x',0};
457 static const WCHAR editName[] = {'E','d','i','t',0};
458
459 if( !CB_GETTYPE(lphc) ) lphc->dwStyle |= CBS_SIMPLE;
460 if( CB_GETTYPE(lphc) != CBS_DROPDOWNLIST ) lphc->wState |= CBF_EDIT;
461
462 lphc->owner = hwndParent;
463
464 /*
465 * The item height and dropped width are not set when the control
466 * is created.
467 */
468 lphc->droppedWidth = lphc->editHeight = 0;
469
470 /*
471 * The first time we go through, we want to measure the ownerdraw item
472 */
473 lphc->wState |= CBF_MEASUREITEM;
474
475 /* M$ IE 3.01 actually creates (and rapidly destroys) an ownerless combobox */
476
477 if( lphc->owner || !(style & WS_VISIBLE) )
478 {
479 UINT lbeStyle = 0;
480 UINT lbeExStyle = 0;
481
482 /*
483 * Initialize the dropped rect to the size of the client area of the
484 * control and then, force all the areas of the combobox to be
485 * recalculated.
486 */
487 GetClientRect( hwnd, &lphc->droppedRect );
488 CBCalcPlacement(hwnd, lphc, &lphc->textRect, &lphc->buttonRect, &lphc->droppedRect );
489
490 /*
491 * Adjust the position of the popup listbox if it's necessary
492 */
493 if ( CB_GETTYPE(lphc) != CBS_SIMPLE )
494 {
495 lphc->droppedRect.top = lphc->textRect.bottom + COMBO_YBORDERSIZE();
496
497 /*
498 * If it's a dropdown, the listbox is offset
499 */
500 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
501 lphc->droppedRect.left += COMBO_EDITBUTTONSPACE();
502
503 if (lphc->droppedRect.bottom < lphc->droppedRect.top)
504 lphc->droppedRect.bottom = lphc->droppedRect.top;
505 if (lphc->droppedRect.right < lphc->droppedRect.left)
506 lphc->droppedRect.right = lphc->droppedRect.left;
507 MapWindowPoints( hwnd, 0, (LPPOINT)&lphc->droppedRect, 2 );
508 }
509
510 /* create listbox popup */
511
512 lbeStyle = (LBS_NOTIFY | LBS_COMBOBOX | WS_BORDER | WS_CLIPSIBLINGS | WS_CHILD) |
513 (style & (WS_VSCROLL | CBS_OWNERDRAWFIXED | CBS_OWNERDRAWVARIABLE));
514
515 if( lphc->dwStyle & CBS_SORT )
516 lbeStyle |= LBS_SORT;
517 if( lphc->dwStyle & CBS_HASSTRINGS )
518 lbeStyle |= LBS_HASSTRINGS;
519 if( lphc->dwStyle & CBS_NOINTEGRALHEIGHT )
520 lbeStyle |= LBS_NOINTEGRALHEIGHT;
521 if( lphc->dwStyle & CBS_DISABLENOSCROLL )
522 lbeStyle |= LBS_DISABLENOSCROLL;
523
524 if( CB_GETTYPE(lphc) == CBS_SIMPLE ) /* child listbox */
525 {
526 lbeStyle |= WS_VISIBLE;
527
528 /*
529 * In win 95 look n feel, the listbox in the simple combobox has
530 * the WS_EXCLIENTEDGE style instead of the WS_BORDER style.
531 */
532 lbeStyle &= ~WS_BORDER;
533 lbeExStyle |= WS_EX_CLIENTEDGE;
534 }
535 else
536 {
537 lbeExStyle |= (WS_EX_TOPMOST | WS_EX_TOOLWINDOW);
538 }
539
540 if (unicode)
541 lphc->hWndLBox = CreateWindowExW(lbeExStyle, clbName, NULL, lbeStyle,
542 lphc->droppedRect.left,
543 lphc->droppedRect.top,
544 lphc->droppedRect.right - lphc->droppedRect.left,
545 lphc->droppedRect.bottom - lphc->droppedRect.top,
546 hwnd, (HMENU)ID_CB_LISTBOX,
547 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), lphc );
548 else
549 lphc->hWndLBox = CreateWindowExA(lbeExStyle, "ComboLBox", NULL, lbeStyle,
550 lphc->droppedRect.left,
551 lphc->droppedRect.top,
552 lphc->droppedRect.right - lphc->droppedRect.left,
553 lphc->droppedRect.bottom - lphc->droppedRect.top,
554 hwnd, (HMENU)ID_CB_LISTBOX,
555 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), lphc );
556
557 if( lphc->hWndLBox )
558 {
559 BOOL bEdit = TRUE;
560 lbeStyle = WS_CHILD | WS_VISIBLE | ES_NOHIDESEL | ES_LEFT | ES_COMBO;
561
562 if( lphc->wState & CBF_EDIT )
563 {
564 if( lphc->dwStyle & CBS_OEMCONVERT )
565 lbeStyle |= ES_OEMCONVERT;
566 if( lphc->dwStyle & CBS_AUTOHSCROLL )
567 lbeStyle |= ES_AUTOHSCROLL;
568 if( lphc->dwStyle & CBS_LOWERCASE )
569 lbeStyle |= ES_LOWERCASE;
570 else if( lphc->dwStyle & CBS_UPPERCASE )
571 lbeStyle |= ES_UPPERCASE;
572
573 if (!IsWindowEnabled(hwnd)) lbeStyle |= WS_DISABLED;
574
575 if (unicode)
576 lphc->hWndEdit = CreateWindowExW(0, editName, NULL, lbeStyle,
577 lphc->textRect.left, lphc->textRect.top,
578 lphc->textRect.right - lphc->textRect.left,
579 lphc->textRect.bottom - lphc->textRect.top,
580 hwnd, (HMENU)ID_CB_EDIT,
581 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), NULL );
582 else
583 lphc->hWndEdit = CreateWindowExA(0, "Edit", NULL, lbeStyle,
584 lphc->textRect.left, lphc->textRect.top,
585 lphc->textRect.right - lphc->textRect.left,
586 lphc->textRect.bottom - lphc->textRect.top,
587 hwnd, (HMENU)ID_CB_EDIT,
588 (HINSTANCE)GetWindowLongPtrW( hwnd, GWLP_HINSTANCE ), NULL );
589
590 if( !lphc->hWndEdit )
591 bEdit = FALSE;
592 }
593
594 if( bEdit )
595 {
596 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
597 {
598 /* Now do the trick with parent */
599 SetParent(lphc->hWndLBox, HWND_DESKTOP);
600 /*
601 * If the combo is a dropdown, we must resize the control
602 * to fit only the text area and button. To do this,
603 * we send a dummy resize and the WM_WINDOWPOSCHANGING message
604 * will take care of setting the height for us.
605 */
606 CBForceDummyResize(lphc);
607 }
608
609 TRACE("init done\n");
610 return 0;
611 }
612 ERR("edit control failure.\n");
613 } else ERR("listbox failure.\n");
614 } else ERR("no owner for visible combo.\n");
615
616 /* CreateWindow() will send WM_NCDESTROY to cleanup */
617
618 return -1;
619 }
620
621 /***********************************************************************
622 * CBPaintButton
623 *
624 * Paint combo button (normal, pressed, and disabled states).
625 */
626 static void CBPaintButton( LPHEADCOMBO lphc, HDC hdc, RECT rectButton)
627 {
628 UINT buttonState = DFCS_SCROLLCOMBOBOX;
629
630 if( lphc->wState & CBF_NOREDRAW )
631 return;
632
633
634 if (lphc->wState & CBF_BUTTONDOWN)
635 buttonState |= DFCS_PUSHED;
636
637 if (CB_DISABLED(lphc))
638 buttonState |= DFCS_INACTIVE;
639
640 DrawFrameControl(hdc, &rectButton, DFC_SCROLL, buttonState);
641 }
642
643 /***********************************************************************
644 * COMBO_PrepareColors
645 *
646 * This method will sent the appropriate WM_CTLCOLOR message to
647 * prepare and setup the colors for the combo's DC.
648 *
649 * It also returns the brush to use for the background.
650 */
651 static HBRUSH COMBO_PrepareColors(
652 LPHEADCOMBO lphc,
653 HDC hDC)
654 {
655 HBRUSH hBkgBrush;
656
657 /*
658 * Get the background brush for this control.
659 */
660 if (CB_DISABLED(lphc))
661 {
662 #ifdef __REACTOS__
663 hBkgBrush = GetControlColor(lphc->owner, lphc->self, hDC, WM_CTLCOLORSTATIC);
664 #else
665 hBkgBrush = (HBRUSH)SendMessageW(lphc->owner, WM_CTLCOLORSTATIC,
666 (WPARAM)hDC, (LPARAM)lphc->self );
667 #endif
668 /*
669 * We have to change the text color since WM_CTLCOLORSTATIC will
670 * set it to the "enabled" color. This is the same behavior as the
671 * edit control
672 */
673 SetTextColor(hDC, GetSysColor(COLOR_GRAYTEXT));
674 }
675 else
676 {
677 /* FIXME: In which cases WM_CTLCOLORLISTBOX should be sent? */
678 #ifdef __REACTOS__
679 hBkgBrush = GetControlColor(lphc->owner, lphc->self, hDC, WM_CTLCOLOREDIT);
680 #else
681 hBkgBrush = (HBRUSH)SendMessageW(lphc->owner, WM_CTLCOLOREDIT,
682 (WPARAM)hDC, (LPARAM)lphc->self );
683 #endif
684 }
685
686 /*
687 * Catch errors.
688 */
689 if( !hBkgBrush )
690 hBkgBrush = GetSysColorBrush(COLOR_WINDOW);
691
692 return hBkgBrush;
693 }
694
695 /***********************************************************************
696 * CBPaintText
697 *
698 * Paint CBS_DROPDOWNLIST text field / update edit control contents.
699 */
700 static void CBPaintText(
701 LPHEADCOMBO lphc,
702 HDC hdc_paint)
703 {
704 RECT rectEdit = lphc->textRect;
705 INT id, size = 0;
706 LPWSTR pText = NULL;
707
708 TRACE("\n");
709
710 /* follow Windows combobox that sends a bunch of text
711 * inquiries to its listbox while processing WM_PAINT. */
712
713 if( (id = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0) ) != LB_ERR )
714 {
715 size = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, id, 0);
716 if (size == LB_ERR)
717 FIXME("LB_ERR probably not handled yet\n");
718 if( (pText = HeapAlloc( GetProcessHeap(), 0, (size + 1) * sizeof(WCHAR))) )
719 {
720 /* size from LB_GETTEXTLEN may be too large, from LB_GETTEXT is accurate */
721 size=SendMessageW(lphc->hWndLBox, LB_GETTEXT, (WPARAM)id, (LPARAM)pText);
722 pText[size] = '\0'; /* just in case */
723 } else return;
724 }
725
726 if( lphc->wState & CBF_EDIT )
727 {
728 static const WCHAR empty_stringW[] = { 0 };
729 if( CB_HASSTRINGS(lphc) ) SetWindowTextW( lphc->hWndEdit, pText ? pText : empty_stringW );
730 if( lphc->wState & CBF_FOCUSED )
731 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, MAXLONG);
732 }
733 else if(!(lphc->wState & CBF_NOREDRAW) && IsWindowVisible( lphc->self ))
734 {
735 /* paint text field ourselves */
736 HDC hdc = hdc_paint ? hdc_paint : GetDC(lphc->self);
737 UINT itemState = ODS_COMBOBOXEDIT;
738 HFONT hPrevFont = (lphc->hFont) ? SelectObject(hdc, lphc->hFont) : 0;
739 HBRUSH hPrevBrush, hBkgBrush;
740
741 /*
742 * Give ourselves some space.
743 */
744 InflateRect( &rectEdit, -1, -1 );
745
746 hBkgBrush = COMBO_PrepareColors( lphc, hdc );
747 hPrevBrush = SelectObject( hdc, hBkgBrush );
748 FillRect( hdc, &rectEdit, hBkgBrush );
749
750 if( CB_OWNERDRAWN(lphc) )
751 {
752 DRAWITEMSTRUCT dis;
753 HRGN clipRegion;
754 UINT ctlid = (UINT)GetWindowLongPtrW( lphc->self, GWLP_ID );
755
756 /* setup state for DRAWITEM message. Owner will highlight */
757 if ( (lphc->wState & CBF_FOCUSED) &&
758 !(lphc->wState & CBF_DROPPED) )
759 itemState |= ODS_SELECTED | ODS_FOCUS;
760
761 if (!IsWindowEnabled(lphc->self)) itemState |= ODS_DISABLED;
762
763 dis.CtlType = ODT_COMBOBOX;
764 dis.CtlID = ctlid;
765 dis.hwndItem = lphc->self;
766 dis.itemAction = ODA_DRAWENTIRE;
767 dis.itemID = id;
768 dis.itemState = itemState;
769 dis.hDC = hdc;
770 dis.rcItem = rectEdit;
771 dis.itemData = SendMessageW(lphc->hWndLBox, LB_GETITEMDATA, id, 0);
772
773 /*
774 * Clip the DC and have the parent draw the item.
775 */
776 clipRegion = set_control_clipping( hdc, &rectEdit );
777
778 SendMessageW(lphc->owner, WM_DRAWITEM, ctlid, (LPARAM)&dis );
779
780 SelectClipRgn( hdc, clipRegion );
781 if (clipRegion) DeleteObject( clipRegion );
782 }
783 else
784 {
785 static const WCHAR empty_stringW[] = { 0 };
786
787 if ( (lphc->wState & CBF_FOCUSED) &&
788 !(lphc->wState & CBF_DROPPED) ) {
789
790 /* highlight */
791 FillRect( hdc, &rectEdit, GetSysColorBrush(COLOR_HIGHLIGHT) );
792 SetBkColor( hdc, GetSysColor( COLOR_HIGHLIGHT ) );
793 SetTextColor( hdc, GetSysColor( COLOR_HIGHLIGHTTEXT ) );
794 }
795
796 ExtTextOutW( hdc,
797 rectEdit.left + 1,
798 rectEdit.top + 1,
799 ETO_OPAQUE | ETO_CLIPPED,
800 &rectEdit,
801 pText ? pText : empty_stringW , size, NULL );
802
803 #ifdef __REACTOS__
804 if(lphc->wState & CBF_FOCUSED &&
805 !(lphc->wState & CBF_DROPPED) &&
806 !(lphc->UIState & UISF_HIDEFOCUS))
807 #else
808 if(lphc->wState & CBF_FOCUSED && !(lphc->wState & CBF_DROPPED))
809 #endif
810 DrawFocusRect( hdc, &rectEdit );
811 }
812
813 if( hPrevFont )
814 SelectObject(hdc, hPrevFont );
815
816 if( hPrevBrush )
817 SelectObject( hdc, hPrevBrush );
818
819 if( !hdc_paint )
820 ReleaseDC( lphc->self, hdc );
821 }
822 #ifdef __REACTOS__
823 if (pText)
824 #endif
825 HeapFree( GetProcessHeap(), 0, pText );
826 }
827
828 /***********************************************************************
829 * CBPaintBorder
830 */
831 static void CBPaintBorder(
832 HWND hwnd,
833 const HEADCOMBO *lphc,
834 HDC hdc)
835 {
836 RECT clientRect;
837
838 if (CB_GETTYPE(lphc) != CBS_SIMPLE)
839 {
840 GetClientRect(hwnd, &clientRect);
841 }
842 else
843 {
844 CopyRect(&clientRect, &lphc->textRect);
845
846 InflateRect(&clientRect, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
847 InflateRect(&clientRect, COMBO_XBORDERSIZE(), COMBO_YBORDERSIZE());
848 }
849
850 DrawEdge(hdc, &clientRect, EDGE_SUNKEN, BF_RECT);
851 }
852
853 /***********************************************************************
854 * COMBO_Paint
855 */
856 static LRESULT COMBO_Paint(LPHEADCOMBO lphc, HDC hParamDC)
857 {
858 PAINTSTRUCT ps;
859 HDC hDC;
860
861 hDC = (hParamDC) ? hParamDC
862 : BeginPaint( lphc->self, &ps);
863
864 TRACE("hdc=%p\n", hDC);
865
866 if( hDC && !(lphc->wState & CBF_NOREDRAW) )
867 {
868 HBRUSH hPrevBrush, hBkgBrush;
869
870 /*
871 * Retrieve the background brush and select it in the
872 * DC.
873 */
874 hBkgBrush = COMBO_PrepareColors(lphc, hDC);
875
876 hPrevBrush = SelectObject( hDC, hBkgBrush );
877 if (!(lphc->wState & CBF_EDIT))
878 FillRect(hDC, &lphc->textRect, hBkgBrush);
879
880 /*
881 * In non 3.1 look, there is a sunken border on the combobox
882 */
883 CBPaintBorder(lphc->self, lphc, hDC);
884
885 if( !IsRectEmpty(&lphc->buttonRect) )
886 {
887 CBPaintButton(lphc, hDC, lphc->buttonRect);
888 }
889
890 /* paint the edit control padding area */
891 if (CB_GETTYPE(lphc) != CBS_DROPDOWNLIST)
892 {
893 RECT rPadEdit = lphc->textRect;
894
895 InflateRect(&rPadEdit, EDIT_CONTROL_PADDING(), EDIT_CONTROL_PADDING());
896
897 FrameRect( hDC, &rPadEdit, GetSysColorBrush(COLOR_WINDOW) );
898 }
899
900 if( !(lphc->wState & CBF_EDIT) )
901 CBPaintText( lphc, hDC );
902
903 if( hPrevBrush )
904 SelectObject( hDC, hPrevBrush );
905 }
906
907 if( !hParamDC )
908 EndPaint(lphc->self, &ps);
909
910 return 0;
911 }
912
913 /***********************************************************************
914 * CBUpdateLBox
915 *
916 * Select listbox entry according to the contents of the edit control.
917 */
918 static INT CBUpdateLBox( LPHEADCOMBO lphc, BOOL bSelect )
919 {
920 INT length, idx;
921 LPWSTR pText = NULL;
922
923 idx = LB_ERR;
924 length = SendMessageW( lphc->hWndEdit, WM_GETTEXTLENGTH, 0, 0 );
925
926 if( length > 0 )
927 pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
928
929 TRACE("\t edit text length %i\n", length );
930
931 if( pText )
932 {
933 GetWindowTextW( lphc->hWndEdit, pText, length + 1);
934 idx = SendMessageW(lphc->hWndLBox, LB_FINDSTRING, (WPARAM)(-1), (LPARAM)pText);
935 HeapFree( GetProcessHeap(), 0, pText );
936 }
937
938 SendMessageW(lphc->hWndLBox, LB_SETCURSEL, (WPARAM)(bSelect ? idx : -1), 0);
939
940 /* probably superfluous but Windows sends this too */
941 SendMessageW(lphc->hWndLBox, LB_SETCARETINDEX, (WPARAM)(idx < 0 ? 0 : idx), 0);
942 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX, (WPARAM)(idx < 0 ? 0 : idx), 0);
943
944 return idx;
945 }
946
947 /***********************************************************************
948 * CBUpdateEdit
949 *
950 * Copy a listbox entry to the edit control.
951 */
952 static void CBUpdateEdit( LPHEADCOMBO lphc , INT index )
953 {
954 INT length;
955 LPWSTR pText = NULL;
956 static const WCHAR empty_stringW[] = { 0 };
957
958 TRACE("\t %i\n", index );
959
960 if( index >= 0 ) /* got an entry */
961 {
962 length = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, (WPARAM)index, 0);
963 if( length != LB_ERR)
964 {
965 if( (pText = HeapAlloc( GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR))) )
966 {
967 SendMessageW(lphc->hWndLBox, LB_GETTEXT, (WPARAM)index, (LPARAM)pText );
968 }
969 }
970 }
971
972 if( CB_HASSTRINGS(lphc) )
973 {
974 lphc->wState |= (CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
975 SendMessageW(lphc->hWndEdit, WM_SETTEXT, 0, pText ? (LPARAM)pText : (LPARAM)empty_stringW);
976 lphc->wState &= ~(CBF_NOEDITNOTIFY | CBF_NOLBSELECT);
977 }
978
979 if( lphc->wState & CBF_FOCUSED )
980 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1));
981
982 HeapFree( GetProcessHeap(), 0, pText );
983 }
984
985 /***********************************************************************
986 * CBDropDown
987 *
988 * Show listbox popup.
989 */
990 static void CBDropDown( LPHEADCOMBO lphc )
991 {
992 HMONITOR monitor;
993 MONITORINFO mon_info;
994 RECT rect,r;
995 int nItems = 0;
996 int nDroppedHeight;
997
998 TRACE("[%p]: drop down\n", lphc->self);
999
1000 CB_NOTIFY( lphc, CBN_DROPDOWN );
1001
1002 /* set selection */
1003
1004 lphc->wState |= CBF_DROPPED;
1005 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1006 {
1007 lphc->droppedIndex = CBUpdateLBox( lphc, TRUE );
1008
1009 /* Update edit only if item is in the list */
1010 if( !(lphc->wState & CBF_CAPTURE) && lphc->droppedIndex >= 0)
1011 CBUpdateEdit( lphc, lphc->droppedIndex );
1012 }
1013 else
1014 {
1015 lphc->droppedIndex = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1016
1017 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX,
1018 (WPARAM)(lphc->droppedIndex == LB_ERR ? 0 : lphc->droppedIndex), 0 );
1019 SendMessageW(lphc->hWndLBox, LB_CARETON, 0, 0);
1020 }
1021
1022 /* now set popup position */
1023 GetWindowRect( lphc->self, &rect );
1024
1025 /*
1026 * If it's a dropdown, the listbox is offset
1027 */
1028 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1029 rect.left += COMBO_EDITBUTTONSPACE();
1030
1031 /* if the dropped height is greater than the total height of the dropped
1032 items list, then force the drop down list height to be the total height
1033 of the items in the dropped list */
1034
1035 /* And Remove any extra space (Best Fit) */
1036 nDroppedHeight = lphc->droppedRect.bottom - lphc->droppedRect.top;
1037 /* if listbox length has been set directly by its handle */
1038 GetWindowRect(lphc->hWndLBox, &r);
1039 if (nDroppedHeight < r.bottom - r.top)
1040 nDroppedHeight = r.bottom - r.top;
1041 nItems = (int)SendMessageW(lphc->hWndLBox, LB_GETCOUNT, 0, 0);
1042
1043 if (nItems > 0)
1044 {
1045 int nHeight;
1046 int nIHeight;
1047
1048 nIHeight = (int)SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, 0, 0);
1049
1050 nHeight = nIHeight*nItems;
1051
1052 if (nHeight < nDroppedHeight - COMBO_YBORDERSIZE())
1053 nDroppedHeight = nHeight + COMBO_YBORDERSIZE();
1054 }
1055
1056 r.left = rect.left;
1057 r.top = rect.bottom;
1058 r.right = r.left + lphc->droppedRect.right - lphc->droppedRect.left;
1059 r.bottom = r.top + nDroppedHeight;
1060
1061 /*If height of dropped rectangle gets beyond a screen size it should go up, otherwise down.*/
1062 monitor = MonitorFromRect( &rect, MONITOR_DEFAULTTOPRIMARY );
1063 mon_info.cbSize = sizeof(mon_info);
1064 GetMonitorInfoW( monitor, &mon_info );
1065
1066 if (r.bottom > mon_info.rcWork.bottom)
1067 {
1068 r.top = max( rect.top - nDroppedHeight, mon_info.rcWork.top );
1069 r.bottom = min( r.top + nDroppedHeight, mon_info.rcWork.bottom );
1070 }
1071
1072 SetWindowPos( lphc->hWndLBox, HWND_TOPMOST, r.left, r.top, r.right - r.left, r.bottom - r.top,
1073 SWP_NOACTIVATE | SWP_SHOWWINDOW );
1074
1075
1076 if( !(lphc->wState & CBF_NOREDRAW) )
1077 RedrawWindow( lphc->self, NULL, 0, RDW_INVALIDATE |
1078 RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1079
1080 EnableWindow( lphc->hWndLBox, TRUE );
1081 if (GetCapture() != lphc->self)
1082 SetCapture(lphc->hWndLBox);
1083 }
1084
1085 /***********************************************************************
1086 * CBRollUp
1087 *
1088 * Hide listbox popup.
1089 */
1090 static void CBRollUp( LPHEADCOMBO lphc, BOOL ok, BOOL bButton )
1091 {
1092 HWND hWnd = lphc->self;
1093
1094 TRACE("[%p]: sel ok? [%i] dropped? [%i]\n",
1095 lphc->self, ok, (INT)(lphc->wState & CBF_DROPPED));
1096
1097 CB_NOTIFY( lphc, (ok) ? CBN_SELENDOK : CBN_SELENDCANCEL );
1098
1099 if( IsWindow( hWnd ) && CB_GETTYPE(lphc) != CBS_SIMPLE )
1100 {
1101
1102 if( lphc->wState & CBF_DROPPED )
1103 {
1104 RECT rect;
1105
1106 lphc->wState &= ~CBF_DROPPED;
1107 ShowWindow( lphc->hWndLBox, SW_HIDE );
1108
1109 if(GetCapture() == lphc->hWndLBox)
1110 {
1111 ReleaseCapture();
1112 }
1113
1114 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1115 {
1116 rect = lphc->buttonRect;
1117 }
1118 else
1119 {
1120 if( bButton )
1121 {
1122 UnionRect( &rect,
1123 &lphc->buttonRect,
1124 &lphc->textRect);
1125 }
1126 else
1127 rect = lphc->textRect;
1128
1129 bButton = TRUE;
1130 }
1131
1132 if( bButton && !(lphc->wState & CBF_NOREDRAW) )
1133 RedrawWindow( hWnd, &rect, 0, RDW_INVALIDATE |
1134 RDW_ERASE | RDW_UPDATENOW | RDW_NOCHILDREN );
1135 CB_NOTIFY( lphc, CBN_CLOSEUP );
1136 }
1137 }
1138 }
1139
1140 /***********************************************************************
1141 * COMBO_FlipListbox
1142 *
1143 * Used by the ComboLBox to show/hide itself in response to VK_F4, etc...
1144 */
1145 BOOL COMBO_FlipListbox( LPHEADCOMBO lphc, BOOL ok, BOOL bRedrawButton )
1146 {
1147 if( lphc->wState & CBF_DROPPED )
1148 {
1149 CBRollUp( lphc, ok, bRedrawButton );
1150 return FALSE;
1151 }
1152
1153 CBDropDown( lphc );
1154 return TRUE;
1155 }
1156
1157 /***********************************************************************
1158 * CBRepaintButton
1159 */
1160 static void CBRepaintButton( LPHEADCOMBO lphc )
1161 {
1162 InvalidateRect(lphc->self, &lphc->buttonRect, TRUE);
1163 UpdateWindow(lphc->self);
1164 }
1165
1166 /***********************************************************************
1167 * COMBO_SetFocus
1168 */
1169 static void COMBO_SetFocus( LPHEADCOMBO lphc )
1170 {
1171 if( !(lphc->wState & CBF_FOCUSED) )
1172 {
1173 if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1174 SendMessageW(lphc->hWndLBox, LB_CARETON, 0, 0);
1175
1176 /* This is wrong. Message sequences seem to indicate that this
1177 is set *after* the notify. */
1178 /* lphc->wState |= CBF_FOCUSED; */
1179
1180 if( !(lphc->wState & CBF_EDIT) )
1181 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1182
1183 CB_NOTIFY( lphc, CBN_SETFOCUS );
1184 lphc->wState |= CBF_FOCUSED;
1185 }
1186 }
1187
1188 /***********************************************************************
1189 * COMBO_KillFocus
1190 */
1191 static void COMBO_KillFocus( LPHEADCOMBO lphc )
1192 {
1193 HWND hWnd = lphc->self;
1194
1195 if( lphc->wState & CBF_FOCUSED )
1196 {
1197 CBRollUp( lphc, FALSE, TRUE );
1198 if( IsWindow( hWnd ) )
1199 {
1200 if( CB_GETTYPE(lphc) == CBS_DROPDOWNLIST )
1201 SendMessageW(lphc->hWndLBox, LB_CARETOFF, 0, 0);
1202
1203 lphc->wState &= ~CBF_FOCUSED;
1204
1205 /* redraw text */
1206 if( !(lphc->wState & CBF_EDIT) )
1207 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1208
1209 CB_NOTIFY( lphc, CBN_KILLFOCUS );
1210 }
1211 }
1212 }
1213
1214 /***********************************************************************
1215 * COMBO_Command
1216 */
1217 static LRESULT COMBO_Command( LPHEADCOMBO lphc, WPARAM wParam, HWND hWnd )
1218 {
1219 if ( lphc->wState & CBF_EDIT && lphc->hWndEdit == hWnd )
1220 {
1221 /* ">> 8" makes gcc generate jump-table instead of cmp ladder */
1222
1223 switch( HIWORD(wParam) >> 8 )
1224 {
1225 case (EN_SETFOCUS >> 8):
1226
1227 TRACE("[%p]: edit [%p] got focus\n", lphc->self, lphc->hWndEdit );
1228
1229 COMBO_SetFocus( lphc );
1230 break;
1231
1232 case (EN_KILLFOCUS >> 8):
1233
1234 TRACE("[%p]: edit [%p] lost focus\n", lphc->self, lphc->hWndEdit );
1235
1236 /* NOTE: it seems that Windows' edit control sends an
1237 * undocumented message WM_USER + 0x1B instead of this
1238 * notification (only when it happens to be a part of
1239 * the combo). ?? - AK.
1240 */
1241
1242 COMBO_KillFocus( lphc );
1243 break;
1244
1245
1246 case (EN_CHANGE >> 8):
1247 /*
1248 * In some circumstances (when the selection of the combobox
1249 * is changed for example) we don't want the EN_CHANGE notification
1250 * to be forwarded to the parent of the combobox. This code
1251 * checks a flag that is set in these occasions and ignores the
1252 * notification.
1253 */
1254 if (lphc->wState & CBF_NOLBSELECT)
1255 {
1256 lphc->wState &= ~CBF_NOLBSELECT;
1257 }
1258 else
1259 {
1260 CBUpdateLBox( lphc, lphc->wState & CBF_DROPPED );
1261 }
1262
1263 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1264 CB_NOTIFY( lphc, CBN_EDITCHANGE );
1265 break;
1266
1267 case (EN_UPDATE >> 8):
1268 if (!(lphc->wState & CBF_NOEDITNOTIFY))
1269 CB_NOTIFY( lphc, CBN_EDITUPDATE );
1270 break;
1271
1272 case (EN_ERRSPACE >> 8):
1273 CB_NOTIFY( lphc, CBN_ERRSPACE );
1274 }
1275 }
1276 else if( lphc->hWndLBox == hWnd )
1277 {
1278 switch( (short)HIWORD(wParam) )
1279 {
1280 case LBN_ERRSPACE:
1281 CB_NOTIFY( lphc, CBN_ERRSPACE );
1282 break;
1283
1284 case LBN_DBLCLK:
1285 CB_NOTIFY( lphc, CBN_DBLCLK );
1286 break;
1287
1288 case LBN_SELCHANGE:
1289 case LBN_SELCANCEL:
1290
1291 TRACE("[%p]: lbox selection change [%x]\n", lphc->self, lphc->wState );
1292
1293 /* do not roll up if selection is being tracked
1294 * by arrow keys in the dropdown listbox */
1295 if (!(lphc->wState & CBF_NOROLLUP))
1296 {
1297 CBRollUp( lphc, (HIWORD(wParam) == LBN_SELCHANGE), TRUE );
1298 }
1299 else lphc->wState &= ~CBF_NOROLLUP;
1300
1301 CB_NOTIFY( lphc, CBN_SELCHANGE );
1302
1303 if( HIWORD(wParam) == LBN_SELCHANGE)
1304 {
1305 if( lphc->wState & CBF_EDIT )
1306 {
1307 INT index = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1308 lphc->wState |= CBF_NOLBSELECT;
1309 CBUpdateEdit( lphc, index );
1310 /* select text in edit, as Windows does */
1311 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, (LPARAM)(-1));
1312 }
1313 else
1314 {
1315 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1316 UpdateWindow(lphc->self);
1317 }
1318 }
1319 break;
1320
1321 case LBN_SETFOCUS:
1322 case LBN_KILLFOCUS:
1323 /* nothing to do here since ComboLBox always resets the focus to its
1324 * combo/edit counterpart */
1325 break;
1326 }
1327 }
1328 return 0;
1329 }
1330
1331 /***********************************************************************
1332 * COMBO_ItemOp
1333 *
1334 * Fixup an ownerdrawn item operation and pass it up to the combobox owner.
1335 */
1336 static LRESULT COMBO_ItemOp( LPHEADCOMBO lphc, UINT msg, LPARAM lParam )
1337 {
1338 HWND hWnd = lphc->self;
1339 UINT id = (UINT)GetWindowLongPtrW( hWnd, GWLP_ID );
1340
1341 TRACE("[%p]: ownerdraw op %04x\n", lphc->self, msg );
1342
1343 switch( msg )
1344 {
1345 case WM_DELETEITEM:
1346 {
1347 DELETEITEMSTRUCT *lpIS = (DELETEITEMSTRUCT *)lParam;
1348 lpIS->CtlType = ODT_COMBOBOX;
1349 lpIS->CtlID = id;
1350 lpIS->hwndItem = hWnd;
1351 break;
1352 }
1353 case WM_DRAWITEM:
1354 {
1355 DRAWITEMSTRUCT *lpIS = (DRAWITEMSTRUCT *)lParam;
1356 lpIS->CtlType = ODT_COMBOBOX;
1357 lpIS->CtlID = id;
1358 lpIS->hwndItem = hWnd;
1359 break;
1360 }
1361 case WM_COMPAREITEM:
1362 {
1363 COMPAREITEMSTRUCT *lpIS = (COMPAREITEMSTRUCT *)lParam;
1364 lpIS->CtlType = ODT_COMBOBOX;
1365 lpIS->CtlID = id;
1366 lpIS->hwndItem = hWnd;
1367 break;
1368 }
1369 case WM_MEASUREITEM:
1370 {
1371 MEASUREITEMSTRUCT *lpIS = (MEASUREITEMSTRUCT *)lParam;
1372 lpIS->CtlType = ODT_COMBOBOX;
1373 lpIS->CtlID = id;
1374 break;
1375 }
1376 }
1377 return SendMessageW(lphc->owner, msg, id, lParam);
1378 }
1379
1380
1381 /***********************************************************************
1382 * COMBO_GetTextW
1383 */
1384 static LRESULT COMBO_GetTextW( LPHEADCOMBO lphc, INT count, LPWSTR buf )
1385 {
1386 INT length;
1387
1388 if( lphc->wState & CBF_EDIT )
1389 return SendMessageW( lphc->hWndEdit, WM_GETTEXT, count, (LPARAM)buf );
1390
1391 /* get it from the listbox */
1392
1393 if (!count || !buf) return 0;
1394 if( lphc->hWndLBox )
1395 {
1396 INT idx = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1397 if (idx == LB_ERR) goto error;
1398 length = SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, idx, 0 );
1399 if (length == LB_ERR) goto error;
1400
1401 /* 'length' is without the terminating character */
1402 if (length >= count)
1403 {
1404 LPWSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) * sizeof(WCHAR));
1405 if (!lpBuffer) goto error;
1406 length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);
1407
1408 /* truncate if buffer is too short */
1409 if (length != LB_ERR)
1410 {
1411 lstrcpynW( buf, lpBuffer, count );
1412 length = count;
1413 }
1414 HeapFree( GetProcessHeap(), 0, lpBuffer );
1415 }
1416 else length = SendMessageW(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);
1417
1418 if (length == LB_ERR) return 0;
1419 return length;
1420 }
1421
1422 error: /* error - truncate string, return zero */
1423 buf[0] = 0;
1424 return 0;
1425 }
1426
1427
1428 /***********************************************************************
1429 * COMBO_GetTextA
1430 *
1431 * NOTE! LB_GETTEXT does not count terminating \0, WM_GETTEXT does.
1432 * also LB_GETTEXT might return values < 0, WM_GETTEXT doesn't.
1433 */
1434 static LRESULT COMBO_GetTextA( LPHEADCOMBO lphc, INT count, LPSTR buf )
1435 {
1436 INT length;
1437
1438 if( lphc->wState & CBF_EDIT )
1439 return SendMessageA( lphc->hWndEdit, WM_GETTEXT, count, (LPARAM)buf );
1440
1441 /* get it from the listbox */
1442
1443 if (!count || !buf) return 0;
1444 if( lphc->hWndLBox )
1445 {
1446 INT idx = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1447 if (idx == LB_ERR) goto error;
1448 length = SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, idx, 0 );
1449 if (length == LB_ERR) goto error;
1450
1451 /* 'length' is without the terminating character */
1452 if (length >= count)
1453 {
1454 LPSTR lpBuffer = HeapAlloc(GetProcessHeap(), 0, (length + 1) );
1455 if (!lpBuffer) goto error;
1456 length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)lpBuffer);
1457
1458 /* truncate if buffer is too short */
1459 if (length != LB_ERR)
1460 {
1461 lstrcpynA( buf, lpBuffer, count );
1462 length = count;
1463 }
1464 HeapFree( GetProcessHeap(), 0, lpBuffer );
1465 }
1466 else length = SendMessageA(lphc->hWndLBox, LB_GETTEXT, idx, (LPARAM)buf);
1467
1468 if (length == LB_ERR) return 0;
1469 return length;
1470 }
1471
1472 error: /* error - truncate string, return zero */
1473 buf[0] = 0;
1474 return 0;
1475 }
1476
1477
1478 /***********************************************************************
1479 * CBResetPos
1480 *
1481 * This function sets window positions according to the updated
1482 * component placement struct.
1483 */
1484 static void CBResetPos(
1485 LPHEADCOMBO lphc,
1486 const RECT *rectEdit,
1487 const RECT *rectLB,
1488 BOOL bRedraw)
1489 {
1490 BOOL bDrop = (CB_GETTYPE(lphc) != CBS_SIMPLE);
1491
1492 /* NOTE: logs sometimes have WM_LBUTTONUP before a cascade of
1493 * sizing messages */
1494
1495 if( lphc->wState & CBF_EDIT )
1496 SetWindowPos( lphc->hWndEdit, 0,
1497 rectEdit->left, rectEdit->top,
1498 rectEdit->right - rectEdit->left,
1499 rectEdit->bottom - rectEdit->top,
1500 SWP_NOZORDER | SWP_NOACTIVATE | ((bDrop) ? SWP_NOREDRAW : 0) );
1501
1502 SetWindowPos( lphc->hWndLBox, 0,
1503 rectLB->left, rectLB->top,
1504 rectLB->right - rectLB->left,
1505 rectLB->bottom - rectLB->top,
1506 SWP_NOACTIVATE | SWP_NOZORDER | ((bDrop) ? SWP_NOREDRAW : 0) );
1507
1508 if( bDrop )
1509 {
1510 if( lphc->wState & CBF_DROPPED )
1511 {
1512 lphc->wState &= ~CBF_DROPPED;
1513 ShowWindow( lphc->hWndLBox, SW_HIDE );
1514 }
1515
1516 if( bRedraw && !(lphc->wState & CBF_NOREDRAW) )
1517 RedrawWindow( lphc->self, NULL, 0,
1518 RDW_INVALIDATE | RDW_ERASE | RDW_UPDATENOW );
1519 }
1520 }
1521
1522
1523 /***********************************************************************
1524 * COMBO_Size
1525 */
1526 static void COMBO_Size( LPHEADCOMBO lphc )
1527 {
1528 /*
1529 * Those controls are always the same height. So we have to make sure
1530 * they are not resized to another value.
1531 */
1532 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
1533 {
1534 int newComboHeight, curComboHeight, curComboWidth;
1535 RECT rc;
1536
1537 GetWindowRect(lphc->self, &rc);
1538 curComboHeight = rc.bottom - rc.top;
1539 curComboWidth = rc.right - rc.left;
1540 newComboHeight = CBGetTextAreaHeight(lphc->self, lphc) + 2*COMBO_YBORDERSIZE();
1541
1542 /*
1543 * Resizing a combobox has another side effect, it resizes the dropped
1544 * rectangle as well. However, it does it only if the new height for the
1545 * combobox is more than the height it should have. In other words,
1546 * if the application resizing the combobox only had the intention to resize
1547 * the actual control, for example, to do the layout of a dialog that is
1548 * resized, the height of the dropdown is not changed.
1549 */
1550 if( curComboHeight > newComboHeight )
1551 {
1552 TRACE("oldComboHeight=%d, newComboHeight=%d, oldDropBottom=%d, oldDropTop=%d\n",
1553 curComboHeight, newComboHeight, lphc->droppedRect.bottom,
1554 lphc->droppedRect.top);
1555 lphc->droppedRect.bottom = lphc->droppedRect.top + curComboHeight - newComboHeight;
1556 }
1557 /*
1558 * Restore original height
1559 */
1560 if( curComboHeight != newComboHeight )
1561 SetWindowPos(lphc->self, 0, 0, 0, curComboWidth, newComboHeight,
1562 SWP_NOZORDER|SWP_NOMOVE|SWP_NOACTIVATE|SWP_NOREDRAW);
1563 }
1564
1565 CBCalcPlacement(lphc->self,
1566 lphc,
1567 &lphc->textRect,
1568 &lphc->buttonRect,
1569 &lphc->droppedRect);
1570
1571 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, FALSE );
1572 }
1573
1574
1575 /***********************************************************************
1576 * COMBO_Font
1577 */
1578 static void COMBO_Font( LPHEADCOMBO lphc, HFONT hFont, BOOL bRedraw )
1579 {
1580 /*
1581 * Set the font
1582 */
1583 lphc->hFont = hFont;
1584
1585 /*
1586 * Propagate to owned windows.
1587 */
1588 if( lphc->wState & CBF_EDIT )
1589 SendMessageW(lphc->hWndEdit, WM_SETFONT, (WPARAM)hFont, bRedraw);
1590 SendMessageW(lphc->hWndLBox, WM_SETFONT, (WPARAM)hFont, bRedraw);
1591
1592 /*
1593 * Redo the layout of the control.
1594 */
1595 if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1596 {
1597 CBCalcPlacement(lphc->self,
1598 lphc,
1599 &lphc->textRect,
1600 &lphc->buttonRect,
1601 &lphc->droppedRect);
1602
1603 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1604 }
1605 else
1606 {
1607 CBForceDummyResize(lphc);
1608 }
1609 }
1610
1611
1612 /***********************************************************************
1613 * COMBO_SetItemHeight
1614 */
1615 static LRESULT COMBO_SetItemHeight( LPHEADCOMBO lphc, INT index, INT height )
1616 {
1617 LRESULT lRet = CB_ERR;
1618
1619 if( index == -1 ) /* set text field height */
1620 {
1621 if( height < 32768 )
1622 {
1623 lphc->editHeight = height + 2; /* Is the 2 for 2*EDIT_CONTROL_PADDING? */
1624
1625 /*
1626 * Redo the layout of the control.
1627 */
1628 if ( CB_GETTYPE(lphc) == CBS_SIMPLE)
1629 {
1630 CBCalcPlacement(lphc->self,
1631 lphc,
1632 &lphc->textRect,
1633 &lphc->buttonRect,
1634 &lphc->droppedRect);
1635
1636 CBResetPos( lphc, &lphc->textRect, &lphc->droppedRect, TRUE );
1637 }
1638 else
1639 {
1640 CBForceDummyResize(lphc);
1641 }
1642
1643 lRet = height;
1644 }
1645 }
1646 else if ( CB_OWNERDRAWN(lphc) ) /* set listbox item height */
1647 lRet = SendMessageW(lphc->hWndLBox, LB_SETITEMHEIGHT, (WPARAM)index, (LPARAM)height);
1648 return lRet;
1649 }
1650
1651 /***********************************************************************
1652 * COMBO_SelectString
1653 */
1654 static LRESULT COMBO_SelectString( LPHEADCOMBO lphc, INT start, LPARAM pText, BOOL unicode )
1655 {
1656 INT index = unicode ? SendMessageW(lphc->hWndLBox, LB_SELECTSTRING, (WPARAM)start, pText) :
1657 SendMessageA(lphc->hWndLBox, LB_SELECTSTRING, (WPARAM)start, pText);
1658 if( index >= 0 )
1659 {
1660 if( lphc->wState & CBF_EDIT )
1661 CBUpdateEdit( lphc, index );
1662 else
1663 {
1664 InvalidateRect(lphc->self, &lphc->textRect, TRUE);
1665 }
1666 }
1667 return (LRESULT)index;
1668 }
1669
1670 /***********************************************************************
1671 * COMBO_LButtonDown
1672 */
1673 static void COMBO_LButtonDown( LPHEADCOMBO lphc, LPARAM lParam )
1674 {
1675 POINT pt;
1676 BOOL bButton;
1677 HWND hWnd = lphc->self;
1678
1679 pt.x = (short)LOWORD(lParam);
1680 pt.y = (short)HIWORD(lParam);
1681 bButton = PtInRect(&lphc->buttonRect, pt);
1682
1683 if( (CB_GETTYPE(lphc) == CBS_DROPDOWNLIST) ||
1684 (bButton && (CB_GETTYPE(lphc) == CBS_DROPDOWN)) )
1685 {
1686 lphc->wState |= CBF_BUTTONDOWN;
1687 if( lphc->wState & CBF_DROPPED )
1688 {
1689 /* got a click to cancel selection */
1690
1691 lphc->wState &= ~CBF_BUTTONDOWN;
1692 CBRollUp( lphc, TRUE, FALSE );
1693 if( !IsWindow( hWnd ) ) return;
1694
1695 if( lphc->wState & CBF_CAPTURE )
1696 {
1697 lphc->wState &= ~CBF_CAPTURE;
1698 ReleaseCapture();
1699 }
1700 }
1701 else
1702 {
1703 /* drop down the listbox and start tracking */
1704
1705 lphc->wState |= CBF_CAPTURE;
1706 SetCapture( hWnd );
1707 CBDropDown( lphc );
1708 }
1709 if( bButton ) CBRepaintButton( lphc );
1710 }
1711 }
1712
1713 /***********************************************************************
1714 * COMBO_LButtonUp
1715 *
1716 * Release capture and stop tracking if needed.
1717 */
1718 static void COMBO_LButtonUp( LPHEADCOMBO lphc )
1719 {
1720 if( lphc->wState & CBF_CAPTURE )
1721 {
1722 lphc->wState &= ~CBF_CAPTURE;
1723 if( CB_GETTYPE(lphc) == CBS_DROPDOWN )
1724 {
1725 INT index = CBUpdateLBox( lphc, TRUE );
1726 /* Update edit only if item is in the list */
1727 if(index >= 0)
1728 {
1729 lphc->wState |= CBF_NOLBSELECT;
1730 CBUpdateEdit( lphc, index );
1731 lphc->wState &= ~CBF_NOLBSELECT;
1732 }
1733 }
1734 ReleaseCapture();
1735 SetCapture(lphc->hWndLBox);
1736 }
1737
1738 if( lphc->wState & CBF_BUTTONDOWN )
1739 {
1740 lphc->wState &= ~CBF_BUTTONDOWN;
1741 CBRepaintButton( lphc );
1742 }
1743 }
1744
1745 /***********************************************************************
1746 * COMBO_MouseMove
1747 *
1748 * Two things to do - track combo button and release capture when
1749 * pointer goes into the listbox.
1750 */
1751 static void COMBO_MouseMove( LPHEADCOMBO lphc, WPARAM wParam, LPARAM lParam )
1752 {
1753 POINT pt;
1754 RECT lbRect;
1755
1756 pt.x = (short)LOWORD(lParam);
1757 pt.y = (short)HIWORD(lParam);
1758
1759 if( lphc->wState & CBF_BUTTONDOWN )
1760 {
1761 BOOL bButton;
1762
1763 bButton = PtInRect(&lphc->buttonRect, pt);
1764
1765 if( !bButton )
1766 {
1767 lphc->wState &= ~CBF_BUTTONDOWN;
1768 CBRepaintButton( lphc );
1769 }
1770 }
1771
1772 GetClientRect( lphc->hWndLBox, &lbRect );
1773 MapWindowPoints( lphc->self, lphc->hWndLBox, &pt, 1 );
1774 if( PtInRect(&lbRect, pt) )
1775 {
1776 lphc->wState &= ~CBF_CAPTURE;
1777 ReleaseCapture();
1778 if( CB_GETTYPE(lphc) == CBS_DROPDOWN ) CBUpdateLBox( lphc, TRUE );
1779
1780 /* hand over pointer tracking */
1781 SendMessageW(lphc->hWndLBox, WM_LBUTTONDOWN, wParam, lParam);
1782 }
1783 }
1784
1785 static LRESULT COMBO_GetComboBoxInfo(const HEADCOMBO *lphc, COMBOBOXINFO *pcbi)
1786 {
1787 if (!pcbi || (pcbi->cbSize < sizeof(COMBOBOXINFO)))
1788 return FALSE;
1789
1790 pcbi->rcItem = lphc->textRect;
1791 pcbi->rcButton = lphc->buttonRect;
1792 pcbi->stateButton = 0;
1793 if (lphc->wState & CBF_BUTTONDOWN)
1794 pcbi->stateButton |= STATE_SYSTEM_PRESSED;
1795 if (IsRectEmpty(&lphc->buttonRect))
1796 pcbi->stateButton |= STATE_SYSTEM_INVISIBLE;
1797 pcbi->hwndCombo = lphc->self;
1798 pcbi->hwndItem = lphc->hWndEdit;
1799 pcbi->hwndList = lphc->hWndLBox;
1800 return TRUE;
1801 }
1802
1803 static char *strdupA(LPCSTR str)
1804 {
1805 char *ret;
1806 DWORD len;
1807
1808 if(!str) return NULL;
1809
1810 len = strlen(str);
1811 ret = HeapAlloc(GetProcessHeap(), 0, len + 1);
1812 #ifdef __REACTOS__
1813 if (ret != NULL)
1814 #endif
1815 memcpy(ret, str, len + 1);
1816 return ret;
1817 }
1818
1819 /***********************************************************************
1820 * ComboWndProc_common
1821 */
1822 LRESULT WINAPI ComboWndProc_common( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam, BOOL unicode )
1823 {
1824 LPHEADCOMBO lphc = (LPHEADCOMBO)GetWindowLongPtrW( hwnd, 0 );
1825 #ifdef __REACTOS__
1826 PWND pWnd;
1827
1828 pWnd = ValidateHwnd(hwnd);
1829 if (pWnd)
1830 {
1831 if (!pWnd->fnid)
1832 {
1833 NtUserSetWindowFNID(hwnd, FNID_COMBOBOX);
1834 }
1835 else
1836 {
1837 if (pWnd->fnid != FNID_COMBOBOX)
1838 {
1839 ERR("Wrong window class for ComboBox! fnId 0x%x\n",pWnd->fnid);
1840 return 0;
1841 }
1842 }
1843 }
1844 #endif
1845
1846 TRACE("[%p]: msg %s wp %08lx lp %08lx\n",
1847 hwnd, SPY_GetMsgName(message, hwnd), wParam, lParam );
1848
1849 #ifndef __REACTOS__
1850 if (!IsWindow(hwnd)) return 0;
1851 #endif
1852
1853 if( lphc || message == WM_NCCREATE )
1854 switch(message)
1855 {
1856
1857 /* System messages */
1858
1859 case WM_NCCREATE:
1860 {
1861 LONG style = unicode ? ((LPCREATESTRUCTW)lParam)->style :
1862 ((LPCREATESTRUCTA)lParam)->style;
1863 return COMBO_NCCreate(hwnd, style);
1864 }
1865 case WM_NCDESTROY:
1866 COMBO_NCDestroy(lphc);
1867 #ifdef __REACTOS__
1868 NtUserSetWindowFNID(hwnd, FNID_DESTROY);
1869 #endif
1870 break;/* -> DefWindowProc */
1871
1872 case WM_CREATE:
1873 {
1874 HWND hwndParent;
1875 LONG style;
1876 if(unicode)
1877 {
1878 hwndParent = ((LPCREATESTRUCTW)lParam)->hwndParent;
1879 style = ((LPCREATESTRUCTW)lParam)->style;
1880 }
1881 else
1882 {
1883 hwndParent = ((LPCREATESTRUCTA)lParam)->hwndParent;
1884 style = ((LPCREATESTRUCTA)lParam)->style;
1885 }
1886 return COMBO_Create(hwnd, lphc, hwndParent, style, unicode);
1887 }
1888
1889 case WM_PRINTCLIENT:
1890 /* Fallthrough */
1891 case WM_PAINT:
1892 /* wParam may contain a valid HDC! */
1893 return COMBO_Paint(lphc, (HDC)wParam);
1894
1895 case WM_ERASEBKGND:
1896 /* do all painting in WM_PAINT like Windows does */
1897 return 1;
1898
1899 case WM_GETDLGCODE:
1900 {
1901 LRESULT result = DLGC_WANTARROWS | DLGC_WANTCHARS;
1902 if (lParam && (((LPMSG)lParam)->message == WM_KEYDOWN))
1903 {
1904 int vk = (int)((LPMSG)lParam)->wParam;
1905
1906 if ((vk == VK_RETURN || vk == VK_ESCAPE) && (lphc->wState & CBF_DROPPED))
1907 result |= DLGC_WANTMESSAGE;
1908 }
1909 return result;
1910 }
1911 case WM_SIZE:
1912 if( lphc->hWndLBox &&
1913 !(lphc->wState & CBF_NORESIZE) ) COMBO_Size( lphc );
1914 return TRUE;
1915 case WM_SETFONT:
1916 COMBO_Font( lphc, (HFONT)wParam, (BOOL)lParam );
1917 return TRUE;
1918 case WM_GETFONT:
1919 return (LRESULT)lphc->hFont;
1920 case WM_SETFOCUS:
1921 if( lphc->wState & CBF_EDIT ) {
1922 SetFocus( lphc->hWndEdit );
1923 /* The first time focus is received, select all the text */
1924 if( !(lphc->wState & CBF_BEENFOCUSED) ) {
1925 SendMessageW(lphc->hWndEdit, EM_SETSEL, 0, -1);
1926 lphc->wState |= CBF_BEENFOCUSED;
1927 }
1928 }
1929 else
1930 COMBO_SetFocus( lphc );
1931 return TRUE;
1932 case WM_KILLFOCUS:
1933 {
1934 HWND hwndFocus = WIN_GetFullHandle( (HWND)wParam );
1935 if( !hwndFocus ||
1936 (hwndFocus != lphc->hWndEdit && hwndFocus != lphc->hWndLBox ))
1937 COMBO_KillFocus( lphc );
1938 return TRUE;
1939 }
1940 case WM_COMMAND:
1941 return COMBO_Command( lphc, wParam, WIN_GetFullHandle( (HWND)lParam ) );
1942 case WM_GETTEXT:
1943 return unicode ? COMBO_GetTextW( lphc, wParam, (LPWSTR)lParam )
1944 : COMBO_GetTextA( lphc, wParam, (LPSTR)lParam );
1945 case WM_SETTEXT:
1946 case WM_GETTEXTLENGTH:
1947 case WM_CLEAR:
1948 if ((message == WM_GETTEXTLENGTH) && !ISWIN31 && !(lphc->wState & CBF_EDIT))
1949 {
1950 int j = SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
1951 if (j == -1) return 0;
1952 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, j, 0) :
1953 SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, j, 0);
1954 }
1955 else if( lphc->wState & CBF_EDIT )
1956 {
1957 LRESULT ret;
1958 lphc->wState |= CBF_NOEDITNOTIFY;
1959 ret = unicode ? SendMessageW(lphc->hWndEdit, message, wParam, lParam) :
1960 SendMessageA(lphc->hWndEdit, message, wParam, lParam);
1961 lphc->wState &= ~CBF_NOEDITNOTIFY;
1962 return ret;
1963 }
1964 else return CB_ERR;
1965 case WM_CUT:
1966 case WM_PASTE:
1967 case WM_COPY:
1968 if( lphc->wState & CBF_EDIT )
1969 {
1970 return unicode ? SendMessageW(lphc->hWndEdit, message, wParam, lParam) :
1971 SendMessageA(lphc->hWndEdit, message, wParam, lParam);
1972 }
1973 else return CB_ERR;
1974
1975 case WM_DRAWITEM:
1976 case WM_DELETEITEM:
1977 case WM_COMPAREITEM:
1978 case WM_MEASUREITEM:
1979 return COMBO_ItemOp(lphc, message, lParam);
1980 case WM_ENABLE:
1981 if( lphc->wState & CBF_EDIT )
1982 EnableWindow( lphc->hWndEdit, (BOOL)wParam );
1983 EnableWindow( lphc->hWndLBox, (BOOL)wParam );
1984
1985 /* Force the control to repaint when the enabled state changes. */
1986 InvalidateRect(lphc->self, NULL, TRUE);
1987 return TRUE;
1988 case WM_SETREDRAW:
1989 if( wParam )
1990 lphc->wState &= ~CBF_NOREDRAW;
1991 else
1992 lphc->wState |= CBF_NOREDRAW;
1993
1994 if( lphc->wState & CBF_EDIT )
1995 SendMessageW(lphc->hWndEdit, message, wParam, lParam);
1996 SendMessageW(lphc->hWndLBox, message, wParam, lParam);
1997 return 0;
1998 case WM_SYSKEYDOWN:
1999 #ifdef __REACTOS__
2000 if( KF_ALTDOWN & HIWORD(lParam) )
2001 #else
2002 if( KEYDATA_ALT & HIWORD(lParam) )
2003 #endif
2004 if( wParam == VK_UP || wParam == VK_DOWN )
2005 COMBO_FlipListbox( lphc, FALSE, FALSE );
2006 return 0;
2007
2008 case WM_KEYDOWN:
2009 if ((wParam == VK_RETURN || wParam == VK_ESCAPE) &&
2010 (lphc->wState & CBF_DROPPED))
2011 {
2012 CBRollUp( lphc, wParam == VK_RETURN, FALSE );
2013 return TRUE;
2014 }
2015 else if ((wParam == VK_F4) && !(lphc->wState & CBF_EUI))
2016 {
2017 COMBO_FlipListbox( lphc, FALSE, FALSE );
2018 return TRUE;
2019 }
2020 /* fall through */
2021 case WM_CHAR:
2022 case WM_IME_CHAR:
2023 {
2024 HWND hwndTarget;
2025
2026 if( lphc->wState & CBF_EDIT )
2027 hwndTarget = lphc->hWndEdit;
2028 else
2029 hwndTarget = lphc->hWndLBox;
2030
2031 return unicode ? SendMessageW(hwndTarget, message, wParam, lParam) :
2032 SendMessageA(hwndTarget, message, wParam, lParam);
2033 }
2034 case WM_LBUTTONDOWN:
2035 if( !(lphc->wState & CBF_FOCUSED) ) SetFocus( lphc->self );
2036 if( lphc->wState & CBF_FOCUSED ) COMBO_LButtonDown( lphc, lParam );
2037 return TRUE;
2038 case WM_LBUTTONUP:
2039 COMBO_LButtonUp( lphc );
2040 return TRUE;
2041 case WM_MOUSEMOVE:
2042 if( lphc->wState & CBF_CAPTURE )
2043 COMBO_MouseMove( lphc, wParam, lParam );
2044 return TRUE;
2045
2046 case WM_MOUSEWHEEL:
2047 if (wParam & (MK_SHIFT | MK_CONTROL))
2048 return unicode ? DefWindowProcW(hwnd, message, wParam, lParam) :
2049 DefWindowProcA(hwnd, message, wParam, lParam);
2050
2051 if (GET_WHEEL_DELTA_WPARAM(wParam) > 0) return SendMessageW(hwnd, WM_KEYDOWN, VK_UP, 0);
2052 if (GET_WHEEL_DELTA_WPARAM(wParam) < 0) return SendMessageW(hwnd, WM_KEYDOWN, VK_DOWN, 0);
2053 return TRUE;
2054
2055 /* Combo messages */
2056
2057 case CB_ADDSTRING:
2058 if( unicode )
2059 {
2060 if( lphc->dwStyle & CBS_LOWERCASE )
2061 CharLowerW((LPWSTR)lParam);
2062 else if( lphc->dwStyle & CBS_UPPERCASE )
2063 CharUpperW((LPWSTR)lParam);
2064 return SendMessageW(lphc->hWndLBox, LB_ADDSTRING, 0, lParam);
2065 }
2066 else /* unlike the unicode version, the ansi version does not overwrite
2067 the string if converting case */
2068 {
2069 char *string = NULL;
2070 LRESULT ret;
2071 if( lphc->dwStyle & CBS_LOWERCASE )
2072 {
2073 string = strdupA((LPSTR)lParam);
2074 CharLowerA(string);
2075 }
2076
2077 else if( lphc->dwStyle & CBS_UPPERCASE )
2078 {
2079 string = strdupA((LPSTR)lParam);
2080 CharUpperA(string);
2081 }
2082
2083 ret = SendMessageA(lphc->hWndLBox, LB_ADDSTRING, 0, string ? (LPARAM)string : lParam);
2084 HeapFree(GetProcessHeap(), 0, string);
2085 return ret;
2086 }
2087 case CB_INSERTSTRING:
2088 if( unicode )
2089 {
2090 if( lphc->dwStyle & CBS_LOWERCASE )
2091 CharLowerW((LPWSTR)lParam);
2092 else if( lphc->dwStyle & CBS_UPPERCASE )
2093 CharUpperW((LPWSTR)lParam);
2094 return SendMessageW(lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
2095 }
2096 else
2097 {
2098 if( lphc->dwStyle & CBS_LOWERCASE )
2099 CharLowerA((LPSTR)lParam);
2100 else if( lphc->dwStyle & CBS_UPPERCASE )
2101 CharUpperA((LPSTR)lParam);
2102
2103 return SendMessageA(lphc->hWndLBox, LB_INSERTSTRING, wParam, lParam);
2104 }
2105 case CB_DELETESTRING:
2106 return unicode ? SendMessageW(lphc->hWndLBox, LB_DELETESTRING, wParam, 0) :
2107 SendMessageA(lphc->hWndLBox, LB_DELETESTRING, wParam, 0);
2108 case CB_SELECTSTRING:
2109 return COMBO_SelectString(lphc, (INT)wParam, lParam, unicode);
2110 case CB_FINDSTRING:
2111 return unicode ? SendMessageW(lphc->hWndLBox, LB_FINDSTRING, wParam, lParam) :
2112 SendMessageA(lphc->hWndLBox, LB_FINDSTRING, wParam, lParam);
2113 case CB_FINDSTRINGEXACT:
2114 return unicode ? SendMessageW(lphc->hWndLBox, LB_FINDSTRINGEXACT, wParam, lParam) :
2115 SendMessageA(lphc->hWndLBox, LB_FINDSTRINGEXACT, wParam, lParam);
2116 case CB_SETITEMHEIGHT:
2117 return COMBO_SetItemHeight( lphc, (INT)wParam, (INT)lParam);
2118 case CB_GETITEMHEIGHT:
2119 if( (INT)wParam >= 0 ) /* listbox item */
2120 return SendMessageW(lphc->hWndLBox, LB_GETITEMHEIGHT, wParam, 0);
2121 return CBGetTextAreaHeight(hwnd, lphc);
2122 case CB_RESETCONTENT:
2123 SendMessageW(lphc->hWndLBox, LB_RESETCONTENT, 0, 0);
2124 if( (lphc->wState & CBF_EDIT) && CB_HASSTRINGS(lphc) )
2125 {
2126 static const WCHAR empty_stringW[] = { 0 };
2127 SendMessageW(lphc->hWndEdit, WM_SETTEXT, 0, (LPARAM)empty_stringW);
2128 }
2129 else
2130 InvalidateRect(lphc->self, NULL, TRUE);
2131 return TRUE;
2132 case CB_INITSTORAGE:
2133 return SendMessageW(lphc->hWndLBox, LB_INITSTORAGE, wParam, lParam);
2134 case CB_GETHORIZONTALEXTENT:
2135 return SendMessageW(lphc->hWndLBox, LB_GETHORIZONTALEXTENT, 0, 0);
2136 case CB_SETHORIZONTALEXTENT:
2137 return SendMessageW(lphc->hWndLBox, LB_SETHORIZONTALEXTENT, wParam, 0);
2138 case CB_GETTOPINDEX:
2139 return SendMessageW(lphc->hWndLBox, LB_GETTOPINDEX, 0, 0);
2140 case CB_GETLOCALE:
2141 return SendMessageW(lphc->hWndLBox, LB_GETLOCALE, 0, 0);
2142 case CB_SETLOCALE:
2143 return SendMessageW(lphc->hWndLBox, LB_SETLOCALE, wParam, 0);
2144 case CB_SETDROPPEDWIDTH:
2145 if( (CB_GETTYPE(lphc) == CBS_SIMPLE) ||
2146 (INT)wParam >= 32768 )
2147 return CB_ERR;
2148 /* new value must be higher than combobox width */
2149 if((INT)wParam >= lphc->droppedRect.right - lphc->droppedRect.left)
2150 lphc->droppedWidth = wParam;
2151 else if(wParam)
2152 lphc->droppedWidth = 0;
2153
2154 /* recalculate the combobox area */
2155 CBCalcPlacement(hwnd, lphc, &lphc->textRect, &lphc->buttonRect, &lphc->droppedRect );
2156
2157 /* fall through */
2158 case CB_GETDROPPEDWIDTH:
2159 if( lphc->droppedWidth )
2160 return lphc->droppedWidth;
2161 return lphc->droppedRect.right - lphc->droppedRect.left;
2162 case CB_GETDROPPEDCONTROLRECT:
2163 if( lParam ) CBGetDroppedControlRect(lphc, (LPRECT)lParam );
2164 return CB_OKAY;
2165 case CB_GETDROPPEDSTATE:
2166 return (lphc->wState & CBF_DROPPED) != 0;
2167 case CB_DIR:
2168 return unicode ? SendMessageW(lphc->hWndLBox, LB_DIR, wParam, lParam) :
2169 SendMessageA(lphc->hWndLBox, LB_DIR, wParam, lParam);
2170
2171 case CB_SHOWDROPDOWN:
2172 if( CB_GETTYPE(lphc) != CBS_SIMPLE )
2173 {
2174 if( wParam )
2175 {
2176 if( !(lphc->wState & CBF_DROPPED) )
2177 CBDropDown( lphc );
2178 }
2179 else
2180 if( lphc->wState & CBF_DROPPED )
2181 CBRollUp( lphc, FALSE, TRUE );
2182 }
2183 return TRUE;
2184 case CB_GETCOUNT:
2185 return SendMessageW(lphc->hWndLBox, LB_GETCOUNT, 0, 0);
2186 case CB_GETCURSEL:
2187 return SendMessageW(lphc->hWndLBox, LB_GETCURSEL, 0, 0);
2188 case CB_SETCURSEL:
2189 lParam = SendMessageW(lphc->hWndLBox, LB_SETCURSEL, wParam, 0);
2190 if( lParam >= 0 )
2191 SendMessageW(lphc->hWndLBox, LB_SETTOPINDEX, wParam, 0);
2192
2193 /* no LBN_SELCHANGE in this case, update manually */
2194 CBPaintText( lphc, NULL );
2195 lphc->wState &= ~CBF_SELCHANGE;
2196 return lParam;
2197 case CB_GETLBTEXT:
2198 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXT, wParam, lParam) :
2199 SendMessageA(lphc->hWndLBox, LB_GETTEXT, wParam, lParam);
2200 case CB_GETLBTEXTLEN:
2201 return unicode ? SendMessageW(lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0) :
2202 SendMessageA(lphc->hWndLBox, LB_GETTEXTLEN, wParam, 0);
2203 case CB_GETITEMDATA:
2204 return SendMessageW(lphc->hWndLBox, LB_GETITEMDATA, wParam, 0);
2205 case CB_SETITEMDATA:
2206 return SendMessageW(lphc->hWndLBox, LB_SETITEMDATA, wParam, lParam);
2207 case CB_GETEDITSEL:
2208 /* Edit checks passed parameters itself */
2209 if( lphc->wState & CBF_EDIT )
2210 return SendMessageW(lphc->hWndEdit, EM_GETSEL, wParam, lParam);
2211 return CB_ERR;
2212 case CB_SETEDITSEL:
2213 if( lphc->wState & CBF_EDIT )
2214 return SendMessageW(lphc->hWndEdit, EM_SETSEL,
2215 (INT)(INT16)LOWORD(lParam), (INT)(INT16)HIWORD(lParam) );
2216 return CB_ERR;
2217 case CB_SETEXTENDEDUI:
2218 if( CB_GETTYPE(lphc) == CBS_SIMPLE )
2219 return CB_ERR;
2220 if( wParam )
2221 lphc->wState |= CBF_EUI;
2222 else lphc->wState &= ~CBF_EUI;
2223 return CB_OKAY;
2224 case CB_GETEXTENDEDUI:
2225 return (lphc->wState & CBF_EUI) != 0;
2226 case CB_GETCOMBOBOXINFO:
2227 return COMBO_GetComboBoxInfo(lphc, (COMBOBOXINFO *)lParam);
2228 case CB_LIMITTEXT:
2229 if( lphc->wState & CBF_EDIT )
2230 return SendMessageW(lphc->hWndEdit, EM_LIMITTEXT, wParam, lParam);
2231 return TRUE;
2232
2233 #ifdef __REACTOS__
2234 case WM_UPDATEUISTATE:
2235 if (unicode)
2236 DefWindowProcW(lphc->self, message, wParam, lParam);
2237 else
2238 DefWindowProcA(lphc->self, message, wParam, lParam);
2239
2240 if (COMBO_update_uistate(lphc))
2241 {
2242 /* redraw text */
2243 if( !(lphc->wState & CBF_EDIT) )
2244 NtUserInvalidateRect(lphc->self, &lphc->textRect, TRUE);
2245 }
2246 break;
2247
2248 case WM_CBLOSTTEXTFOCUS: /* undocumented message - deselects the text when focus is lost */
2249 if (lphc->hWndEdit != NULL)
2250 {
2251 SendMessage(lphc->self, WM_LBUTTONUP, 0, 0xFFFFFFFF);
2252 SendMessage(lphc->hWndEdit, EM_SETSEL, 0, 0);
2253 lphc->wState &= ~(CBF_FOCUSED | CBF_BEENFOCUSED);
2254 CB_NOTIFY(lphc, CBN_KILLFOCUS);
2255 }
2256 return TRUE;
2257
2258 #endif
2259
2260 default:
2261 if (message >= WM_USER)
2262 WARN("unknown msg WM_USER+%04x wp=%04lx lp=%08lx\n",
2263 message - WM_USER, wParam, lParam );
2264 break;
2265 }
2266 return unicode ? DefWindowProcW(hwnd, message, wParam, lParam) :
2267 DefWindowProcA(hwnd, message, wParam, lParam);
2268 }
2269
2270 #ifdef __REACTOS__
2271
2272 /***********************************************************************
2273 * ComboWndProcA
2274 *
2275 * This is just a wrapper for the real ComboWndProc which locks/unlocks
2276 * window structs.
2277 */
2278 LRESULT WINAPI ComboWndProcA( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
2279 {
2280 if (!IsWindow(hwnd)) return 0;
2281 return ComboWndProc_common( hwnd, message, wParam, lParam, FALSE );
2282 }
2283
2284 /***********************************************************************
2285 * ComboWndProcW
2286 */
2287 LRESULT WINAPI ComboWndProcW( HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam )
2288 {
2289 if (!IsWindow(hwnd)) return 0;
2290 return ComboWndProc_common( hwnd, message, wParam, lParam, TRUE );
2291 }
2292
2293 #endif /* __REACTOS__ */
2294
2295 /*************************************************************************
2296 * GetComboBoxInfo (USER32.@)
2297 */
2298 BOOL WINAPI GetComboBoxInfo(HWND hwndCombo, /* [in] handle to combo box */
2299 PCOMBOBOXINFO pcbi /* [in/out] combo box information */)
2300 {
2301 TRACE("(%p, %p)\n", hwndCombo, pcbi);
2302 #ifdef __REACTOS__
2303 return NtUserGetComboBoxInfo(hwndCombo, pcbi);
2304 #else
2305 return SendMessageW(hwndCombo, CB_GETCOMBOBOXINFO, 0, (LPARAM)pcbi);
2306 #endif
2307 }
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