dlls/comctl32/ipaddress.c

   1 /*
   2  * IP Address control
   3  *
   4  * Copyright 2002 Dimitrie O. Paun
   5  * Copyright 1999 Chris Morgan<cmorgan@wpi.edu>
   6  * Copyright 1999 James Abbatiello<abbeyj@wpi.edu>
   7  * Copyright 1998, 1999 Eric Kohl
   8  * Copyright 1998 Alex Priem <alexp@sci.kun.nl>
   9  *
  10  * This library is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU Lesser General Public
  12  * License as published by the Free Software Foundation; either
  13  * version 2.1 of the License, or (at your option) any later version.
  14  *
  15  * This library is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * Lesser General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public
  21  * License along with this library; if not, write to the Free Software
  22  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  23  *
  24  * NOTE
  25  *
  26  * This code was audited for completeness against the documented features
  27  * of Comctl32.dll version 6.0 on Sep. 9, 2002, by Dimitrie O. Paun.
  28  *
  29  * Unless otherwise noted, we believe this code to be complete, as per
  30  * the specification mentioned above.
  31  * If you discover missing features, or bugs, please note them below.
  32  *
  33  */
  34
  35 #include <ctype.h>
  36 #include <stdlib.h>
  37 #include <stdarg.h>
  38 #include <stdio.h>
  39 #include <string.h>
  40
  41 #include "windef.h"
  42 #include "winbase.h"
  43 #include "wingdi.h"
  44 #include "winuser.h"
  45 #include "winnls.h"
  46 #include "commctrl.h"
  47 #include "comctl32.h"
  48 #include "wine/unicode.h"
  49 #include "wine/debug.h"
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(ipaddress);
  52
  53 typedef struct
  54 {
  55     HWND     EditHwnd;
  56     INT      LowerLimit;
  57     INT      UpperLimit;
  58     WNDPROC  OrigProc;
  59 } IPPART_INFO;
  60
  61 typedef struct
  62 {
  63     HWND        Self;
  64     HWND        Notify;
  65     BOOL        Enabled;
  66     IPPART_INFO Part[4];
  67 } IPADDRESS_INFO;
  68
  69 static const WCHAR IP_SUBCLASS_PROP[] =
  70     { 'C', 'C', 'I', 'P', '3', '2', 'S', 'u', 'b', 'c', 'l', 'a', 's', 's', 'I', 'n', 'f', 'o', 0 };
  71
  72 #define POS_DEFAULT     0
  73 #define POS_LEFT        1
  74 #define POS_RIGHT       2
  75 #define POS_SELALL      3
  76
  77 static LRESULT CALLBACK
  78 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
  79
  80 static void IPADDRESS_UpdateText (const IPADDRESS_INFO *infoPtr)
  81 {
  82     static const WCHAR zero[2] = {'0', 0};
  83     static const WCHAR dot[2]  = {'.', 0};
  84     WCHAR field[4];
  85     WCHAR ip[16];
  86     INT i;
  87
  88     ip[0] = 0;
  89
  90     for (i = 0; i < 4; i++) {
  91         if (GetWindowTextW (infoPtr->Part[i].EditHwnd, field, 4))
  92             strcatW(ip, field);
  93         else
  94             /* empty edit treated as zero */
  95             strcatW(ip, zero);
  96         if (i != 3)
  97             strcatW(ip, dot);
  98     }
  99
 100     SetWindowTextW(infoPtr->Self, ip);
 101 }
 102
 103 static LRESULT IPADDRESS_Notify (const IPADDRESS_INFO *infoPtr, UINT command)
 104 {
 105     HWND hwnd = infoPtr->Self;
 106
 107     TRACE("(command=%x)\n", command);
 108
 109     return SendMessageW (infoPtr->Notify, WM_COMMAND,
 110              MAKEWPARAM (GetWindowLongPtrW (hwnd, GWLP_ID), command), (LPARAM)hwnd);
 111 }
 112
 113 static INT IPADDRESS_IPNotify (const IPADDRESS_INFO *infoPtr, INT field, INT value)
 114 {
 115     NMIPADDRESS nmip;
 116
 117     TRACE("(field=%x, value=%d)\n", field, value);
 118
 119     nmip.hdr.hwndFrom = infoPtr->Self;
 120     nmip.hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
 121     nmip.hdr.code     = IPN_FIELDCHANGED;
 122
 123     nmip.iField = field;
 124     nmip.iValue = value;
 125
 126     SendMessageW (infoPtr->Notify, WM_NOTIFY, nmip.hdr.idFrom, (LPARAM)&nmip);
 127
 128     TRACE("<-- %d\n", nmip.iValue);
 129
 130     return nmip.iValue;
 131 }
 132
 133
 134 static int IPADDRESS_GetPartIndex(const IPADDRESS_INFO *infoPtr, HWND hwnd)
 135 {
 136     int i;
 137
 138     TRACE("(hwnd=%p)\n", hwnd);
 139
 140     for (i = 0; i < 4; i++)
 141         if (infoPtr->Part[i].EditHwnd == hwnd) return i;
 142
 143     ERR("We subclassed the wrong window! (hwnd=%p)\n", hwnd);
 144     return -1;
 145 }
 146
 147
 148 static LRESULT IPADDRESS_Draw (const IPADDRESS_INFO *infoPtr, HDC hdc)
 149 {
 150     static const WCHAR dotW[] = { '.', 0 };
 151     RECT rect, rcPart;
 152     POINT pt;
 153     COLORREF bgCol, fgCol;
 154     int i;
 155
 156     TRACE("\n");
 157
 158     GetClientRect (infoPtr->Self, &rect);
 159
 160     if (infoPtr->Enabled) {
 161         bgCol = comctl32_color.clrWindow;
 162         fgCol = comctl32_color.clrWindowText;
 163     } else {
 164         bgCol = comctl32_color.clr3dFace;
 165         fgCol = comctl32_color.clrGrayText;
 166     }
 167
 168     FillRect (hdc, &rect, (HBRUSH)(DWORD_PTR)(bgCol+1));
 169     DrawEdge (hdc, &rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 170
 171     SetBkColor  (hdc, bgCol);
 172     SetTextColor(hdc, fgCol);
 173
 174     for (i = 0; i < 3; i++) {
 175         GetWindowRect (infoPtr->Part[i].EditHwnd, &rcPart);
 176         pt.x = rcPart.right;
 177         ScreenToClient(infoPtr->Self, &pt);
 178         rect.left = pt.x;
 179         GetWindowRect (infoPtr->Part[i+1].EditHwnd, &rcPart);
 180         pt.x = rcPart.left;
 181         ScreenToClient(infoPtr->Self, &pt);
 182         rect.right = pt.x;
 183         DrawTextW(hdc, dotW, 1, &rect, DT_SINGLELINE | DT_CENTER | DT_BOTTOM);
 184     }
 185
 186     return 0;
 187 }
 188
 189
 190 static LRESULT IPADDRESS_Create (HWND hwnd, const CREATESTRUCTA *lpCreate)
 191 {
 192     IPADDRESS_INFO *infoPtr;
 193     RECT rcClient, edit;
 194     int i, fieldsize;
 195     HFONT hFont, hSysFont;
 196     LOGFONTW logFont, logSysFont;
 197
 198     TRACE("\n");
 199
 200     SetWindowLongW (hwnd, GWL_STYLE,
 201                     GetWindowLongW(hwnd, GWL_STYLE) & ~WS_BORDER);
 202
 203     infoPtr = Alloc (sizeof(IPADDRESS_INFO));
 204     if (!infoPtr) return -1;
 205     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
 206
 207     GetClientRect (hwnd, &rcClient);
 208
 209     fieldsize = (rcClient.right - rcClient.left) / 4;
 210
 211     edit.top    = rcClient.top + 2;
 212     edit.bottom = rcClient.bottom - 2;
 213
 214     infoPtr->Self = hwnd;
 215     infoPtr->Enabled = TRUE;
 216     infoPtr->Notify = lpCreate->hwndParent;
 217
 218     hSysFont = GetStockObject(ANSI_VAR_FONT);
 219     GetObjectW(hSysFont, sizeof(LOGFONTW), &logSysFont);
 220     SystemParametersInfoW(SPI_GETICONTITLELOGFONT, 0, &logFont, 0);
 221     strcpyW(logFont.lfFaceName, logSysFont.lfFaceName);
 222     hFont = CreateFontIndirectW(&logFont);
 223
 224     for (i = 0; i < 4; i++) {
 225         IPPART_INFO* part = &infoPtr->Part[i];
 226
 227         part->LowerLimit = 0;
 228         part->UpperLimit = 255;
 229         edit.left = rcClient.left + i*fieldsize + 6;
 230         edit.right = rcClient.left + (i+1)*fieldsize - 2;
 231         part->EditHwnd =
 232                 CreateWindowW (WC_EDITW, NULL, WS_CHILD | WS_VISIBLE | ES_CENTER,
 233                                edit.left, edit.top, edit.right - edit.left,
 234                                edit.bottom - edit.top, hwnd, (HMENU) 1,
 235                                (HINSTANCE)GetWindowLongPtrW(hwnd, GWLP_HINSTANCE), NULL);
 236         SendMessageW(part->EditHwnd, WM_SETFONT, (WPARAM) hFont, FALSE);
 237         SetPropW(part->EditHwnd, IP_SUBCLASS_PROP, hwnd);
 238         part->OrigProc = (WNDPROC)
 239                 SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC,
 240                                 (DWORD_PTR)IPADDRESS_SubclassProc);
 241         EnableWindow(part->EditHwnd, infoPtr->Enabled);
 242     }
 243
 244     IPADDRESS_UpdateText (infoPtr);
 245
 246     return 0;
 247 }
 248
 249
 250 static LRESULT IPADDRESS_Destroy (IPADDRESS_INFO *infoPtr)
 251 {
 252     int i;
 253
 254     TRACE("\n");
 255
 256     for (i = 0; i < 4; i++) {
 257         IPPART_INFO* part = &infoPtr->Part[i];
 258         SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC, (DWORD_PTR)part->OrigProc);
 259     }
 260
 261     SetWindowLongPtrW (infoPtr->Self, 0, 0);
 262     Free (infoPtr);
 263     return 0;
 264 }
 265
 266
 267 static LRESULT IPADDRESS_Enable (IPADDRESS_INFO *infoPtr, BOOL enabled)
 268 {
 269     int i;
 270
 271     infoPtr->Enabled = enabled;
 272
 273     for (i = 0; i < 4; i++)
 274         EnableWindow(infoPtr->Part[i].EditHwnd, enabled);
 275
 276     InvalidateRgn(infoPtr->Self, NULL, FALSE);
 277     return 0;
 278 }
 279
 280
 281 static LRESULT IPADDRESS_Paint (const IPADDRESS_INFO *infoPtr, HDC hdc)
 282 {
 283     PAINTSTRUCT ps;
 284
 285     TRACE("\n");
 286
 287     if (hdc) return IPADDRESS_Draw (infoPtr, hdc);
 288
 289     hdc = BeginPaint (infoPtr->Self, &ps);
 290     IPADDRESS_Draw (infoPtr, hdc);
 291     EndPaint (infoPtr->Self, &ps);
 292     return 0;
 293 }
 294
 295
 296 static BOOL IPADDRESS_IsBlank (const IPADDRESS_INFO *infoPtr)
 297 {
 298     int i;
 299
 300     TRACE("\n");
 301
 302     for (i = 0; i < 4; i++)
 303         if (GetWindowTextLengthW (infoPtr->Part[i].EditHwnd)) return FALSE;
 304
 305     return TRUE;
 306 }
 307
 308
 309 static int IPADDRESS_GetAddress (const IPADDRESS_INFO *infoPtr, LPDWORD ip_address)
 310 {
 311     WCHAR field[5];
 312     int i, invalid = 0;
 313     DWORD ip_addr = 0;
 314
 315     TRACE("\n");
 316
 317     for (i = 0; i < 4; i++) {
 318         ip_addr *= 256;
 319         if (GetWindowTextW (infoPtr->Part[i].EditHwnd, field, 4))
 320             ip_addr += atolW(field);
 321         else
 322             invalid++;
 323     }
 324     *ip_address = ip_addr;
 325
 326     return 4 - invalid;
 327 }
 328
 329
 330 static BOOL IPADDRESS_SetRange (IPADDRESS_INFO *infoPtr, int index, WORD range)
 331 {
 332     TRACE("\n");
 333
 334     if ( (index < 0) || (index > 3) ) return FALSE;
 335
 336     infoPtr->Part[index].LowerLimit = range & 0xFF;
 337     infoPtr->Part[index].UpperLimit = (range >> 8)  & 0xFF;
 338
 339     return TRUE;
 340 }
 341
 342
 343 static void IPADDRESS_ClearAddress (const IPADDRESS_INFO *infoPtr)
 344 {
 345     WCHAR nil[1] = { 0 };
 346     int i;
 347
 348     TRACE("\n");
 349
 350     for (i = 0; i < 4; i++)
 351         SetWindowTextW (infoPtr->Part[i].EditHwnd, nil);
 352 }
 353
 354
 355 static LRESULT IPADDRESS_SetAddress (const IPADDRESS_INFO *infoPtr, DWORD ip_address)
 356 {
 357     WCHAR buf[20];
 358     static const WCHAR fmt[] = { '%', 'd', 0 };
 359     int i;
 360
 361     TRACE("\n");
 362
 363     for (i = 3; i >= 0; i--) {
 364         const IPPART_INFO* part = &infoPtr->Part[i];
 365         int value = ip_address & 0xff;
 366         if ( (value >= part->LowerLimit) && (value <= part->UpperLimit) ) {
 367             wsprintfW (buf, fmt, value);
 368             SetWindowTextW (part->EditHwnd, buf);
 369             IPADDRESS_Notify (infoPtr, EN_CHANGE);
 370         }
 371         ip_address >>= 8;
 372     }
 373
 374     return TRUE;
 375 }
 376
 377
 378 static void IPADDRESS_SetFocusToField (const IPADDRESS_INFO *infoPtr, INT index)
 379 {
 380     TRACE("(index=%d)\n", index);
 381
 382     if (index > 3 || index < 0) index=0;
 383
 384     SetFocus (infoPtr->Part[index].EditHwnd);
 385 }
 386
 387
 388 static BOOL IPADDRESS_ConstrainField (const IPADDRESS_INFO *infoPtr, int currentfield)
 389 {
 390     const IPPART_INFO *part = &infoPtr->Part[currentfield];
 391     WCHAR field[10];
 392     static const WCHAR fmt[] = { '%', 'd', 0 };
 393     int curValue, newValue;
 394
 395     TRACE("(currentfield=%d)\n", currentfield);
 396
 397     if (currentfield < 0 || currentfield > 3) return FALSE;
 398
 399     if (!GetWindowTextW (part->EditHwnd, field, 4)) return FALSE;
 400
 401     curValue = atoiW(field);
 402     TRACE("  curValue=%d\n", curValue);
 403
 404     newValue = IPADDRESS_IPNotify(infoPtr, currentfield, curValue);
 405     TRACE("  newValue=%d\n", newValue);
 406
 407     if (newValue < part->LowerLimit) newValue = part->LowerLimit;
 408     if (newValue > part->UpperLimit) newValue = part->UpperLimit;
 409
 410     if (newValue == curValue) return FALSE;
 411
 412     wsprintfW (field, fmt, newValue);
 413     TRACE("  field=%s\n", debugstr_w(field));
 414     return SetWindowTextW (part->EditHwnd, field);
 415 }
 416
 417
 418 static BOOL IPADDRESS_GotoNextField (const IPADDRESS_INFO *infoPtr, int cur, int sel)
 419 {
 420     TRACE("\n");
 421
 422     if(cur >= -1 && cur < 4) {
 423         IPADDRESS_ConstrainField(infoPtr, cur);
 424
 425         if(cur < 3) {
 426             const IPPART_INFO *next = &infoPtr->Part[cur + 1];
 427             int start = 0, end = 0;
 428             SetFocus (next->EditHwnd);
 429             if (sel != POS_DEFAULT) {
 430                 if (sel == POS_RIGHT)
 431                     start = end = GetWindowTextLengthW(next->EditHwnd);
 432                 else if (sel == POS_SELALL)
 433                     end = -1;
 434                 SendMessageW(next->EditHwnd, EM_SETSEL, start, end);
 435             }
 436             return TRUE;
 437         }
 438
 439     }
 440     return FALSE;
 441 }
 442
 443
 444 /*
 445  * period: move and select the text in the next field to the right if
 446  *         the current field is not empty(l!=0), we are not in the
 447  *         left most position, and nothing is selected(startsel==endsel)
 448  *
 449  * spacebar: same behavior as period
 450  *
 451  * alpha characters: completely ignored
 452  *
 453  * digits: accepted when field text length < 2 ignored otherwise.
 454  *         when 3 numbers have been entered into the field the value
 455  *         of the field is checked, if the field value exceeds the
 456  *         maximum value and is changed the field remains the current
 457  *         field, otherwise focus moves to the field to the right
 458  *
 459  * tab: change focus from the current ipaddress control to the next
 460  *      control in the tab order
 461  *
 462  * right arrow: move to the field on the right to the left most
 463  *              position in that field if no text is selected,
 464  *              we are in the right most position in the field,
 465  *              we are not in the right most field
 466  *
 467  * left arrow: move to the field on the left to the right most
 468  *             position in that field if no text is selected,
 469  *             we are in the left most position in the current field
 470  *             and we are not in the left most field
 471  *
 472  * backspace: delete the character to the left of the cursor position,
 473  *            if none are present move to the field on the left if
 474  *            we are not in the left most field and delete the right
 475  *            most digit in that field while keeping the cursor
 476  *            on the right side of the field
 477  */
 478 LRESULT CALLBACK
 479 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 480 {
 481     HWND Self = GetPropW (hwnd, IP_SUBCLASS_PROP);
 482     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (Self, 0);
 483     CHAR c = (CHAR)wParam;
 484     INT index, len = 0, startsel, endsel;
 485     IPPART_INFO *part;
 486
 487     TRACE("(hwnd=%p msg=0x%x wparam=0x%lx lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 488
 489     if ( (index = IPADDRESS_GetPartIndex(infoPtr, hwnd)) < 0) return 0;
 490     part = &infoPtr->Part[index];
 491
 492     if (uMsg == WM_CHAR || uMsg == WM_KEYDOWN) {
 493         len = GetWindowTextLengthW (hwnd);
 494         SendMessageW(hwnd, EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 495     }
 496     switch (uMsg) {
 497         case WM_CHAR:
 498             if(isdigit(c)) {
 499                 if(len == 2 && startsel==endsel && endsel==len) {
 500                     /* process the digit press before we check the field */
 501                     int return_val = CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 502
 503                     /* if the field value was changed stay at the current field */
 504                     if(!IPADDRESS_ConstrainField(infoPtr, index))
 505                         IPADDRESS_GotoNextField (infoPtr, index, POS_DEFAULT);
 506
 507                     return return_val;
 508                 } else if (len == 3 && startsel==endsel && endsel==len)
 509                     IPADDRESS_GotoNextField (infoPtr, index, POS_SELALL);
 510                 else if (len < 3 || startsel != endsel) break;
 511             } else if(c == '.' || c == ' ') {
 512                 if(len && startsel==endsel && startsel != 0) {
 513                     IPADDRESS_GotoNextField(infoPtr, index, POS_SELALL);
 514                 }
 515             } else if (c == VK_BACK) break;
 516             return 0;
 517
 518         case WM_KEYDOWN:
 519             switch(c) {
 520                 case VK_RIGHT:
 521                     if(startsel==endsel && startsel==len) {
 522                         IPADDRESS_GotoNextField(infoPtr, index, POS_LEFT);
 523                         return 0;
 524                     }
 525                     break;
 526                 case VK_LEFT:
 527                     if(startsel==0 && startsel==endsel && index > 0) {
 528                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 529                         return 0;
 530                     }
 531                     break;
 532                 case VK_BACK:
 533                     if(startsel==endsel && startsel==0 && index > 0) {
 534                         IPPART_INFO *prev = &infoPtr->Part[index-1];
 535                         WCHAR val[10];
 536
 537                         if(GetWindowTextW(prev->EditHwnd, val, 5)) {
 538                             val[lstrlenW(val) - 1] = 0;
 539                             SetWindowTextW(prev->EditHwnd, val);
 540                         }
 541
 542                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 543                         return 0;
 544                     }
 545                     break;
 546             }
 547             break;
 548         case WM_KILLFOCUS:
 549             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 550                 IPADDRESS_Notify(infoPtr, EN_KILLFOCUS);
 551             break;
 552         case WM_SETFOCUS:
 553             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 554                 IPADDRESS_Notify(infoPtr, EN_SETFOCUS);
 555             break;
 556     }
 557     return CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 558 }
 559
 560
 561 static LRESULT WINAPI
 562 IPADDRESS_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 563 {
 564     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (hwnd, 0);
 565
 566     TRACE("(hwnd=%p msg=0x%x wparam=0x%lx lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 567
 568     if (!infoPtr && (uMsg != WM_CREATE))
 569         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 570
 571     switch (uMsg)
 572     {
 573         case WM_CREATE:
 574             return IPADDRESS_Create (hwnd, (LPCREATESTRUCTA)lParam);
 575
 576         case WM_DESTROY:
 577             return IPADDRESS_Destroy (infoPtr);
 578
 579         case WM_ENABLE:
 580             return IPADDRESS_Enable (infoPtr, (BOOL)wParam);
 581
 582         case WM_PAINT:
 583             return IPADDRESS_Paint (infoPtr, (HDC)wParam);
 584
 585         case WM_COMMAND:
 586             switch(wParam >> 16) {
 587                 case EN_CHANGE:
 588                     IPADDRESS_UpdateText(infoPtr);
 589                     IPADDRESS_Notify(infoPtr, EN_CHANGE);
 590                     break;
 591                 case EN_KILLFOCUS:
 592                     IPADDRESS_ConstrainField(infoPtr, IPADDRESS_GetPartIndex(infoPtr, (HWND)lParam));
 593                     break;
 594             }
 595             break;
 596
 597         case WM_SYSCOLORCHANGE:
 598             COMCTL32_RefreshSysColors();
 599             return 0;
 600
 601         case IPM_CLEARADDRESS:
 602             IPADDRESS_ClearAddress (infoPtr);
 603             break;
 604
 605         case IPM_SETADDRESS:
 606             return IPADDRESS_SetAddress (infoPtr, (DWORD)lParam);
 607
 608         case IPM_GETADDRESS:
 609             return IPADDRESS_GetAddress (infoPtr, (LPDWORD)lParam);
 610
 611         case IPM_SETRANGE:
 612             return IPADDRESS_SetRange (infoPtr, (int)wParam, (WORD)lParam);
 613
 614         case IPM_SETFOCUS:
 615             IPADDRESS_SetFocusToField (infoPtr, (int)wParam);
 616             break;
 617
 618         case IPM_ISBLANK:
 619             return IPADDRESS_IsBlank (infoPtr);
 620
 621         default:
 622             if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
 623                 ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
 624             return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 625     }
 626     return 0;
 627 }
 628
 629
 630 void IPADDRESS_Register (void)
 631 {
 632     WNDCLASSW wndClass;
 633
 634     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
 635     wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
 636     wndClass.lpfnWndProc   = IPADDRESS_WindowProc;
 637     wndClass.cbClsExtra    = 0;
 638     wndClass.cbWndExtra    = sizeof(IPADDRESS_INFO *);
 639     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_IBEAM);
 640     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 641     wndClass.lpszClassName = WC_IPADDRESSW;
 642
 643     RegisterClassW (&wndClass);
 644 }
 645
 646
 647 void IPADDRESS_Unregister (void)
 648 {
 649     UnregisterClassW (WC_IPADDRESSW, NULL);
 650 }