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 LRESULT IPADDRESS_Notify (IPADDRESS_INFO *infoPtr, UINT command)
  81 {
  82     HWND hwnd = infoPtr->Self;
  83
  84     TRACE("(command=%x)\n", command);
  85
  86     return SendMessageW (infoPtr->Notify, WM_COMMAND,
  87              MAKEWPARAM (GetWindowLongPtrW (hwnd, GWLP_ID), command), (LPARAM)hwnd);
  88 }
  89
  90 static INT IPADDRESS_IPNotify (IPADDRESS_INFO *infoPtr, INT field, INT value)
  91 {
  92     NMIPADDRESS nmip;
  93
  94     TRACE("(field=%x, value=%d)\n", field, value);
  95
  96     nmip.hdr.hwndFrom = infoPtr->Self;
  97     nmip.hdr.idFrom   = GetWindowLongPtrW (infoPtr->Self, GWLP_ID);
  98     nmip.hdr.code     = IPN_FIELDCHANGED;
  99
 100     nmip.iField = field;
 101     nmip.iValue = value;
 102
 103     SendMessageW (infoPtr->Notify, WM_NOTIFY,
 104                   (WPARAM)nmip.hdr.idFrom, (LPARAM)&nmip);
 105
 106     TRACE("<-- %d\n", nmip.iValue);
 107
 108     return nmip.iValue;
 109 }
 110
 111
 112 static int IPADDRESS_GetPartIndex(IPADDRESS_INFO *infoPtr, HWND hwnd)
 113 {
 114     int i;
 115
 116     TRACE("(hwnd=%p)\n", hwnd);
 117
 118     for (i = 0; i < 4; i++)
 119         if (infoPtr->Part[i].EditHwnd == hwnd) return i;
 120
 121     ERR("We subclassed the wrong window! (hwnd=%p)\n", hwnd);
 122     return -1;
 123 }
 124
 125
 126 static LRESULT IPADDRESS_Draw (IPADDRESS_INFO *infoPtr, HDC hdc)
 127 {
 128     static const WCHAR dotW[] = { '.', 0 };
 129     RECT rect, rcPart;
 130     POINT pt;
 131     COLORREF bgCol, fgCol;
 132     int i;
 133
 134     TRACE("\n");
 135
 136     GetClientRect (infoPtr->Self, &rect);
 137
 138     if (infoPtr->Enabled) {
 139         bgCol = COLOR_WINDOW;
 140         fgCol = COLOR_WINDOWTEXT;
 141     } else {
 142         bgCol = COLOR_3DFACE;
 143         fgCol = COLOR_GRAYTEXT;
 144     }
 145
 146     FillRect (hdc, &rect, (HBRUSH)(DWORD_PTR)(bgCol+1));
 147     DrawEdge (hdc, &rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 148
 149     SetBkColor  (hdc, GetSysColor(bgCol));
 150     SetTextColor(hdc, GetSysColor(fgCol));
 151
 152     for (i = 0; i < 3; i++) {
 153         GetWindowRect (infoPtr->Part[i].EditHwnd, &rcPart);
 154         pt.x = rcPart.right;
 155         ScreenToClient(infoPtr->Self, &pt);
 156         rect.left = pt.x;
 157         GetWindowRect (infoPtr->Part[i+1].EditHwnd, &rcPart);
 158         pt.x = rcPart.left;
 159         ScreenToClient(infoPtr->Self, &pt);
 160         rect.right = pt.x;
 161         DrawTextW(hdc, dotW, 1, &rect, DT_SINGLELINE | DT_CENTER | DT_BOTTOM);
 162     }
 163
 164     return 0;
 165 }
 166
 167
 168 static LRESULT IPADDRESS_Create (HWND hwnd, LPCREATESTRUCTA lpCreate)
 169 {
 170     static const WCHAR EDIT[] = { 'E', 'd', 'i', 't', 0 };
 171     IPADDRESS_INFO *infoPtr;
 172     RECT rcClient, edit;
 173     int i, fieldsize;
 174
 175     TRACE("\n");
 176
 177     SetWindowLongW (hwnd, GWL_STYLE,
 178                     GetWindowLongW(hwnd, GWL_STYLE) & ~WS_BORDER);
 179
 180     infoPtr = (IPADDRESS_INFO *)Alloc (sizeof(IPADDRESS_INFO));
 181     if (!infoPtr) return -1;
 182     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
 183
 184     GetClientRect (hwnd, &rcClient);
 185
 186     fieldsize = (rcClient.right - rcClient.left) / 4;
 187
 188     edit.top    = rcClient.top + 2;
 189     edit.bottom = rcClient.bottom - 2;
 190
 191     infoPtr->Self = hwnd;
 192     infoPtr->Enabled = TRUE;
 193     infoPtr->Notify = lpCreate->hwndParent;
 194
 195     for (i = 0; i < 4; i++) {
 196         IPPART_INFO* part = &infoPtr->Part[i];
 197
 198         part->LowerLimit = 0;
 199         part->UpperLimit = 255;
 200         edit.left = rcClient.left + i*fieldsize + 6;
 201         edit.right = rcClient.left + (i+1)*fieldsize - 2;
 202         part->EditHwnd =
 203                 CreateWindowW (EDIT, NULL, WS_CHILD | WS_VISIBLE | ES_CENTER,
 204                                edit.left, edit.top, edit.right - edit.left,
 205                                edit.bottom - edit.top, hwnd, (HMENU) 1,
 206                                (HINSTANCE)GetWindowLongPtrW(hwnd, GWLP_HINSTANCE), NULL);
 207         SetPropW(part->EditHwnd, IP_SUBCLASS_PROP, hwnd);
 208         part->OrigProc = (WNDPROC)
 209                 SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC,
 210                                 (DWORD_PTR)IPADDRESS_SubclassProc);
 211         EnableWindow(part->EditHwnd, infoPtr->Enabled);
 212     }
 213
 214     return 0;
 215 }
 216
 217
 218 static LRESULT IPADDRESS_Destroy (IPADDRESS_INFO *infoPtr)
 219 {
 220     int i;
 221
 222     TRACE("\n");
 223
 224     for (i = 0; i < 4; i++) {
 225         IPPART_INFO* part = &infoPtr->Part[i];
 226         SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC, (DWORD_PTR)part->OrigProc);
 227     }
 228
 229     SetWindowLongPtrW (infoPtr->Self, 0, 0);
 230     Free (infoPtr);
 231     return 0;
 232 }
 233
 234
 235 static LRESULT IPADDRESS_Enable (IPADDRESS_INFO *infoPtr, BOOL enabled)
 236 {
 237     int i;
 238
 239     infoPtr->Enabled = enabled;
 240
 241     for (i = 0; i < 4; i++)
 242         EnableWindow(infoPtr->Part[i].EditHwnd, enabled);
 243
 244     InvalidateRgn(infoPtr->Self, NULL, FALSE);
 245     return 0;
 246 }
 247
 248
 249 static LRESULT IPADDRESS_Paint (IPADDRESS_INFO *infoPtr, HDC hdc)
 250 {
 251     PAINTSTRUCT ps;
 252
 253     TRACE("\n");
 254
 255     if (hdc) return IPADDRESS_Draw (infoPtr, hdc);
 256
 257     hdc = BeginPaint (infoPtr->Self, &ps);
 258     IPADDRESS_Draw (infoPtr, hdc);
 259     EndPaint (infoPtr->Self, &ps);
 260     return 0;
 261 }
 262
 263
 264 static BOOL IPADDRESS_IsBlank (IPADDRESS_INFO *infoPtr)
 265 {
 266     int i;
 267
 268     TRACE("\n");
 269
 270     for (i = 0; i < 4; i++)
 271         if (GetWindowTextLengthW (infoPtr->Part[i].EditHwnd)) return FALSE;
 272
 273     return TRUE;
 274 }
 275
 276
 277 static int IPADDRESS_GetAddress (IPADDRESS_INFO *infoPtr, LPDWORD ip_address)
 278 {
 279     WCHAR field[5];
 280     int i, invalid = 0;
 281     DWORD ip_addr = 0;
 282
 283     TRACE("\n");
 284
 285     for (i = 0; i < 4; i++) {
 286         ip_addr *= 256;
 287         if (GetWindowTextW (infoPtr->Part[i].EditHwnd, field, 4))
 288             ip_addr += atolW(field);
 289         else
 290             invalid++;
 291     }
 292     *ip_address = ip_addr;
 293
 294     return 4 - invalid;
 295 }
 296
 297
 298 static BOOL IPADDRESS_SetRange (IPADDRESS_INFO *infoPtr, int index, WORD range)
 299 {
 300     TRACE("\n");
 301
 302     if ( (index < 0) || (index > 3) ) return FALSE;
 303
 304     infoPtr->Part[index].LowerLimit = range & 0xFF;
 305     infoPtr->Part[index].UpperLimit = (range >> 8)  & 0xFF;
 306
 307     return TRUE;
 308 }
 309
 310
 311 static void IPADDRESS_ClearAddress (IPADDRESS_INFO *infoPtr)
 312 {
 313     WCHAR nil[1] = { 0 };
 314     int i;
 315
 316     TRACE("\n");
 317
 318     for (i = 0; i < 4; i++)
 319         SetWindowTextW (infoPtr->Part[i].EditHwnd, nil);
 320 }
 321
 322
 323 static LRESULT IPADDRESS_SetAddress (IPADDRESS_INFO *infoPtr, DWORD ip_address)
 324 {
 325     WCHAR buf[20];
 326     static const WCHAR fmt[] = { '%', 'd', 0 };
 327     int i;
 328
 329     TRACE("\n");
 330
 331     for (i = 3; i >= 0; i--) {
 332         IPPART_INFO* part = &infoPtr->Part[i];
 333         int value = ip_address & 0xff;
 334         if ( (value >= part->LowerLimit) && (value <= part->UpperLimit) ) {
 335             wsprintfW (buf, fmt, value);
 336             SetWindowTextW (part->EditHwnd, buf);
 337             IPADDRESS_Notify (infoPtr, EN_CHANGE);
 338         }
 339         ip_address >>= 8;
 340     }
 341
 342     return TRUE;
 343 }
 344
 345
 346 static void IPADDRESS_SetFocusToField (IPADDRESS_INFO *infoPtr, INT index)
 347 {
 348     TRACE("(index=%d)\n", index);
 349
 350     if (index > 3 || index < 0) index=0;
 351
 352     SetFocus (infoPtr->Part[index].EditHwnd);
 353 }
 354
 355
 356 static BOOL IPADDRESS_ConstrainField (IPADDRESS_INFO *infoPtr, int currentfield)
 357 {
 358     IPPART_INFO *part = &infoPtr->Part[currentfield];
 359     WCHAR field[10];
 360     static const WCHAR fmt[] = { '%', 'd', 0 };
 361     int curValue, newValue;
 362
 363     TRACE("(currentfield=%d)\n", currentfield);
 364
 365     if (currentfield < 0 || currentfield > 3) return FALSE;
 366
 367     if (!GetWindowTextW (part->EditHwnd, field, 4)) return FALSE;
 368
 369     curValue = atoiW(field);
 370     TRACE("  curValue=%d\n", curValue);
 371
 372     newValue = IPADDRESS_IPNotify(infoPtr, currentfield, curValue);
 373     TRACE("  newValue=%d\n", newValue);
 374
 375     if (newValue < part->LowerLimit) newValue = part->LowerLimit;
 376     if (newValue > part->UpperLimit) newValue = part->UpperLimit;
 377
 378     if (newValue == curValue) return FALSE;
 379
 380     wsprintfW (field, fmt, newValue);
 381     TRACE("  field=%s\n", debugstr_w(field));
 382     return SetWindowTextW (part->EditHwnd, field);
 383 }
 384
 385
 386 static BOOL IPADDRESS_GotoNextField (IPADDRESS_INFO *infoPtr, int cur, int sel)
 387 {
 388     TRACE("\n");
 389
 390     if(cur >= -1 && cur < 4) {
 391         IPADDRESS_ConstrainField(infoPtr, cur);
 392
 393         if(cur < 3) {
 394             IPPART_INFO *next = &infoPtr->Part[cur + 1];
 395             int start = 0, end = 0;
 396             SetFocus (next->EditHwnd);
 397             if (sel != POS_DEFAULT) {
 398                 if (sel == POS_RIGHT)
 399                     start = end = GetWindowTextLengthW(next->EditHwnd);
 400                 else if (sel == POS_SELALL)
 401                     end = -1;
 402                 SendMessageW(next->EditHwnd, EM_SETSEL, start, end);
 403             }
 404             return TRUE;
 405         }
 406
 407     }
 408     return FALSE;
 409 }
 410
 411
 412 /*
 413  * period: move and select the text in the next field to the right if
 414  *         the current field is not empty(l!=0), we are not in the
 415  *         left most position, and nothing is selected(startsel==endsel)
 416  *
 417  * spacebar: same behavior as period
 418  *
 419  * alpha characters: completely ignored
 420  *
 421  * digits: accepted when field text length < 2 ignored otherwise.
 422  *         when 3 numbers have been entered into the field the value
 423  *         of the field is checked, if the field value exceeds the
 424  *         maximum value and is changed the field remains the current
 425  *         field, otherwise focus moves to the field to the right
 426  *
 427  * tab: change focus from the current ipaddress control to the next
 428  *      control in the tab order
 429  *
 430  * right arrow: move to the field on the right to the left most
 431  *              position in that field if no text is selected,
 432  *              we are in the right most position in the field,
 433  *              we are not in the right most field
 434  *
 435  * left arrow: move to the field on the left to the right most
 436  *             position in that field if no text is selected,
 437  *             we are in the left most position in the current field
 438  *             and we are not in the left most field
 439  *
 440  * backspace: delete the character to the left of the cursor position,
 441  *            if none are present move to the field on the left if
 442  *            we are not in the left most field and delete the right
 443  *            most digit in that field while keeping the cursor
 444  *            on the right side of the field
 445  */
 446 LRESULT CALLBACK
 447 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 448 {
 449     HWND Self = (HWND)GetPropW (hwnd, IP_SUBCLASS_PROP);
 450     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (Self, 0);
 451     CHAR c = (CHAR)wParam;
 452     INT index, len = 0, startsel, endsel;
 453     IPPART_INFO *part;
 454
 455     TRACE("(hwnd=%p msg=0x%x wparam=0x%x lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 456
 457     if ( (index = IPADDRESS_GetPartIndex(infoPtr, hwnd)) < 0) return 0;
 458     part = &infoPtr->Part[index];
 459
 460     if (uMsg == WM_CHAR || uMsg == WM_KEYDOWN) {
 461         len = GetWindowTextLengthW (hwnd);
 462         SendMessageW(hwnd, EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 463     }
 464     switch (uMsg) {
 465         case WM_CHAR:
 466             if(isdigit(c)) {
 467                 if(len == 2 && startsel==endsel && endsel==len) {
 468                     /* process the digit press before we check the field */
 469                     int return_val = CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 470
 471                     /* if the field value was changed stay at the current field */
 472                     if(!IPADDRESS_ConstrainField(infoPtr, index))
 473                         IPADDRESS_GotoNextField (infoPtr, index, POS_DEFAULT);
 474
 475                     return return_val;
 476                 } else if (len == 3 && startsel==endsel && endsel==len)
 477                     IPADDRESS_GotoNextField (infoPtr, index, POS_SELALL);
 478                 else if (len < 3) break;
 479             } else if(c == '.' || c == ' ') {
 480                 if(len && startsel==endsel && startsel != 0) {
 481                     IPADDRESS_GotoNextField(infoPtr, index, POS_SELALL);
 482                 }
 483             } else if (c == VK_BACK) break;
 484             return 0;
 485
 486         case WM_KEYDOWN:
 487             switch(c) {
 488                 case VK_RIGHT:
 489                     if(startsel==endsel && startsel==len) {
 490                         IPADDRESS_GotoNextField(infoPtr, index, POS_LEFT);
 491                         return 0;
 492                     }
 493                     break;
 494                 case VK_LEFT:
 495                     if(startsel==0 && startsel==endsel && index > 0) {
 496                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 497                         return 0;
 498                     }
 499                     break;
 500                 case VK_BACK:
 501                     if(startsel==endsel && startsel==0 && index > 0) {
 502                         IPPART_INFO *prev = &infoPtr->Part[index-1];
 503                         WCHAR val[10];
 504
 505                         if(GetWindowTextW(prev->EditHwnd, val, 5)) {
 506                             val[lstrlenW(val) - 1] = 0;
 507                             SetWindowTextW(prev->EditHwnd, val);
 508                         }
 509
 510                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 511                         return 0;
 512                     }
 513                     break;
 514             }
 515             break;
 516         case WM_KILLFOCUS:
 517             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 518                 IPADDRESS_Notify(infoPtr, EN_KILLFOCUS);
 519             break;
 520         case WM_SETFOCUS:
 521             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 522                 IPADDRESS_Notify(infoPtr, EN_SETFOCUS);
 523             break;
 524     }
 525     return CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 526 }
 527
 528
 529 static LRESULT WINAPI
 530 IPADDRESS_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 531 {
 532     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (hwnd, 0);
 533
 534     TRACE("(hwnd=%p msg=0x%x wparam=0x%x lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 535
 536     if (!infoPtr && (uMsg != WM_CREATE))
 537         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 538
 539     switch (uMsg)
 540     {
 541         case WM_CREATE:
 542             return IPADDRESS_Create (hwnd, (LPCREATESTRUCTA)lParam);
 543
 544         case WM_DESTROY:
 545             return IPADDRESS_Destroy (infoPtr);
 546
 547         case WM_ENABLE:
 548             return IPADDRESS_Enable (infoPtr, (BOOL)wParam);
 549             break;
 550
 551         case WM_PAINT:
 552             return IPADDRESS_Paint (infoPtr, (HDC)wParam);
 553
 554         case WM_COMMAND:
 555             switch(wParam >> 16) {
 556                 case EN_CHANGE:
 557                     IPADDRESS_Notify(infoPtr, EN_CHANGE);
 558                     break;
 559                 case EN_KILLFOCUS:
 560                     IPADDRESS_ConstrainField(infoPtr, IPADDRESS_GetPartIndex(infoPtr, (HWND)lParam));
 561                     break;
 562             }
 563             break;
 564
 565         case IPM_CLEARADDRESS:
 566             IPADDRESS_ClearAddress (infoPtr);
 567             break;
 568
 569         case IPM_SETADDRESS:
 570             return IPADDRESS_SetAddress (infoPtr, (DWORD)lParam);
 571
 572         case IPM_GETADDRESS:
 573             return IPADDRESS_GetAddress (infoPtr, (LPDWORD)lParam);
 574
 575         case IPM_SETRANGE:
 576             return IPADDRESS_SetRange (infoPtr, (int)wParam, (WORD)lParam);
 577
 578         case IPM_SETFOCUS:
 579             IPADDRESS_SetFocusToField (infoPtr, (int)wParam);
 580             break;
 581
 582         case IPM_ISBLANK:
 583             return IPADDRESS_IsBlank (infoPtr);
 584
 585         default:
 586             if ((uMsg >= WM_USER) && (uMsg < WM_APP))
 587                 ERR("unknown msg %04x wp=%08x lp=%08lx\n", uMsg, wParam, lParam);
 588             return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 589     }
 590     return 0;
 591 }
 592
 593
 594 void IPADDRESS_Register (void)
 595 {
 596     WNDCLASSW wndClass;
 597
 598     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
 599     wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
 600     wndClass.lpfnWndProc   = IPADDRESS_WindowProc;
 601     wndClass.cbClsExtra    = 0;
 602     wndClass.cbWndExtra    = sizeof(IPADDRESS_INFO *);
 603     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_IBEAM);
 604     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 605     wndClass.lpszClassName = WC_IPADDRESSW;
 606
 607     RegisterClassW (&wndClass);
 608 }
 609
 610
 611 void IPADDRESS_Unregister (void)
 612 {
 613     UnregisterClassW (WC_IPADDRESSW, NULL);
 614 }