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     COLORREF bgCol, fgCol;
 153     int i;
 154
 155     TRACE("\n");
 156
 157     GetClientRect (infoPtr->Self, &rect);
 158
 159     if (infoPtr->Enabled) {
 160         bgCol = comctl32_color.clrWindow;
 161         fgCol = comctl32_color.clrWindowText;
 162     } else {
 163         bgCol = comctl32_color.clr3dFace;
 164         fgCol = comctl32_color.clrGrayText;
 165     }
 166
 167     FillRect (hdc, &rect, (HBRUSH)(DWORD_PTR)(bgCol+1));
 168     DrawEdge (hdc, &rect, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
 169
 170     SetBkColor  (hdc, bgCol);
 171     SetTextColor(hdc, fgCol);
 172
 173     for (i = 0; i < 3; i++) {
 174         GetWindowRect (infoPtr->Part[i].EditHwnd, &rcPart);
 175         MapWindowPoints( 0, infoPtr->Self, (POINT *)&rcPart, 2 );
 176         rect.left = rcPart.right;
 177         GetWindowRect (infoPtr->Part[i+1].EditHwnd, &rcPart);
 178         MapWindowPoints( 0, infoPtr->Self, (POINT *)&rcPart, 2 );
 179         rect.right = rcPart.left;
 180         DrawTextW(hdc, dotW, 1, &rect, DT_SINGLELINE | DT_CENTER | DT_BOTTOM);
 181     }
 182
 183     return 0;
 184 }
 185
 186
 187 static LRESULT IPADDRESS_Create (HWND hwnd, const CREATESTRUCTA *lpCreate)
 188 {
 189     IPADDRESS_INFO *infoPtr;
 190     RECT rcClient, edit;
 191     int i, fieldsize;
 192     HFONT hFont, hSysFont;
 193     LOGFONTW logFont, logSysFont;
 194
 195     TRACE("\n");
 196
 197     SetWindowLongW (hwnd, GWL_STYLE,
 198                     GetWindowLongW(hwnd, GWL_STYLE) & ~WS_BORDER);
 199
 200     infoPtr = Alloc (sizeof(IPADDRESS_INFO));
 201     if (!infoPtr) return -1;
 202     SetWindowLongPtrW (hwnd, 0, (DWORD_PTR)infoPtr);
 203
 204     GetClientRect (hwnd, &rcClient);
 205
 206     fieldsize = (rcClient.right - rcClient.left) / 4;
 207
 208     edit.top    = rcClient.top + 2;
 209     edit.bottom = rcClient.bottom - 2;
 210
 211     infoPtr->Self = hwnd;
 212     infoPtr->Enabled = TRUE;
 213     infoPtr->Notify = lpCreate->hwndParent;
 214
 215     hSysFont = GetStockObject(ANSI_VAR_FONT);
 216     GetObjectW(hSysFont, sizeof(LOGFONTW), &logSysFont);
 217     SystemParametersInfoW(SPI_GETICONTITLELOGFONT, 0, &logFont, 0);
 218     strcpyW(logFont.lfFaceName, logSysFont.lfFaceName);
 219     hFont = CreateFontIndirectW(&logFont);
 220
 221     for (i = 0; i < 4; i++) {
 222         IPPART_INFO* part = &infoPtr->Part[i];
 223
 224         part->LowerLimit = 0;
 225         part->UpperLimit = 255;
 226         edit.left = rcClient.left + i*fieldsize + 6;
 227         edit.right = rcClient.left + (i+1)*fieldsize - 2;
 228         part->EditHwnd =
 229                 CreateWindowW (WC_EDITW, NULL, WS_CHILD | WS_VISIBLE | ES_CENTER,
 230                                edit.left, edit.top, edit.right - edit.left,
 231                                edit.bottom - edit.top, hwnd, (HMENU) 1,
 232                                (HINSTANCE)GetWindowLongPtrW(hwnd, GWLP_HINSTANCE), NULL);
 233         SendMessageW(part->EditHwnd, WM_SETFONT, (WPARAM) hFont, FALSE);
 234         SetPropW(part->EditHwnd, IP_SUBCLASS_PROP, hwnd);
 235         part->OrigProc = (WNDPROC)
 236                 SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC,
 237                                 (DWORD_PTR)IPADDRESS_SubclassProc);
 238         EnableWindow(part->EditHwnd, infoPtr->Enabled);
 239     }
 240
 241     IPADDRESS_UpdateText (infoPtr);
 242
 243     return 0;
 244 }
 245
 246
 247 static LRESULT IPADDRESS_Destroy (IPADDRESS_INFO *infoPtr)
 248 {
 249     int i;
 250
 251     TRACE("\n");
 252
 253     for (i = 0; i < 4; i++) {
 254         IPPART_INFO* part = &infoPtr->Part[i];
 255         SetWindowLongPtrW (part->EditHwnd, GWLP_WNDPROC, (DWORD_PTR)part->OrigProc);
 256     }
 257
 258     SetWindowLongPtrW (infoPtr->Self, 0, 0);
 259     Free (infoPtr);
 260     return 0;
 261 }
 262
 263
 264 static LRESULT IPADDRESS_Enable (IPADDRESS_INFO *infoPtr, BOOL enabled)
 265 {
 266     int i;
 267
 268     infoPtr->Enabled = enabled;
 269
 270     for (i = 0; i < 4; i++)
 271         EnableWindow(infoPtr->Part[i].EditHwnd, enabled);
 272
 273     InvalidateRgn(infoPtr->Self, NULL, FALSE);
 274     return 0;
 275 }
 276
 277
 278 static LRESULT IPADDRESS_Paint (const IPADDRESS_INFO *infoPtr, HDC hdc)
 279 {
 280     PAINTSTRUCT ps;
 281
 282     TRACE("\n");
 283
 284     if (hdc) return IPADDRESS_Draw (infoPtr, hdc);
 285
 286     hdc = BeginPaint (infoPtr->Self, &ps);
 287     IPADDRESS_Draw (infoPtr, hdc);
 288     EndPaint (infoPtr->Self, &ps);
 289     return 0;
 290 }
 291
 292
 293 static BOOL IPADDRESS_IsBlank (const IPADDRESS_INFO *infoPtr)
 294 {
 295     int i;
 296
 297     TRACE("\n");
 298
 299     for (i = 0; i < 4; i++)
 300         if (GetWindowTextLengthW (infoPtr->Part[i].EditHwnd)) return FALSE;
 301
 302     return TRUE;
 303 }
 304
 305
 306 static int IPADDRESS_GetAddress (const IPADDRESS_INFO *infoPtr, LPDWORD ip_address)
 307 {
 308     WCHAR field[5];
 309     int i, invalid = 0;
 310     DWORD ip_addr = 0;
 311
 312     TRACE("\n");
 313
 314     for (i = 0; i < 4; i++) {
 315         ip_addr *= 256;
 316         if (GetWindowTextW (infoPtr->Part[i].EditHwnd, field, 4))
 317             ip_addr += atolW(field);
 318         else
 319             invalid++;
 320     }
 321     *ip_address = ip_addr;
 322
 323     return 4 - invalid;
 324 }
 325
 326
 327 static BOOL IPADDRESS_SetRange (IPADDRESS_INFO *infoPtr, int index, WORD range)
 328 {
 329     TRACE("\n");
 330
 331     if ( (index < 0) || (index > 3) ) return FALSE;
 332
 333     infoPtr->Part[index].LowerLimit = range & 0xFF;
 334     infoPtr->Part[index].UpperLimit = (range >> 8)  & 0xFF;
 335
 336     return TRUE;
 337 }
 338
 339
 340 static void IPADDRESS_ClearAddress (const IPADDRESS_INFO *infoPtr)
 341 {
 342     WCHAR nil[1] = { 0 };
 343     int i;
 344
 345     TRACE("\n");
 346
 347     for (i = 0; i < 4; i++)
 348         SetWindowTextW (infoPtr->Part[i].EditHwnd, nil);
 349 }
 350
 351
 352 static LRESULT IPADDRESS_SetAddress (const IPADDRESS_INFO *infoPtr, DWORD ip_address)
 353 {
 354     WCHAR buf[20];
 355     static const WCHAR fmt[] = { '%', 'd', 0 };
 356     int i;
 357
 358     TRACE("\n");
 359
 360     for (i = 3; i >= 0; i--) {
 361         const IPPART_INFO* part = &infoPtr->Part[i];
 362         int value = ip_address & 0xff;
 363         if ( (value >= part->LowerLimit) && (value <= part->UpperLimit) ) {
 364             wsprintfW (buf, fmt, value);
 365             SetWindowTextW (part->EditHwnd, buf);
 366             IPADDRESS_Notify (infoPtr, EN_CHANGE);
 367         }
 368         ip_address >>= 8;
 369     }
 370
 371     return TRUE;
 372 }
 373
 374
 375 static void IPADDRESS_SetFocusToField (const IPADDRESS_INFO *infoPtr, INT index)
 376 {
 377     TRACE("(index=%d)\n", index);
 378
 379     if (index > 3 || index < 0) index=0;
 380
 381     SetFocus (infoPtr->Part[index].EditHwnd);
 382 }
 383
 384
 385 static BOOL IPADDRESS_ConstrainField (const IPADDRESS_INFO *infoPtr, int currentfield)
 386 {
 387     static const WCHAR fmt[] = { '%', 'd', 0 };
 388     const IPPART_INFO *part;
 389     int curValue, newValue;
 390     WCHAR field[10];
 391
 392     TRACE("(currentfield=%d)\n", currentfield);
 393
 394     if (currentfield < 0 || currentfield > 3) return FALSE;
 395
 396     part = &infoPtr->Part[currentfield];
 397     if (!GetWindowTextW (part->EditHwnd, field, 4)) return FALSE;
 398
 399     curValue = atoiW(field);
 400     TRACE("  curValue=%d\n", curValue);
 401
 402     newValue = IPADDRESS_IPNotify(infoPtr, currentfield, curValue);
 403     TRACE("  newValue=%d\n", newValue);
 404
 405     if (newValue < part->LowerLimit) newValue = part->LowerLimit;
 406     if (newValue > part->UpperLimit) newValue = part->UpperLimit;
 407
 408     if (newValue == curValue) return FALSE;
 409
 410     wsprintfW (field, fmt, newValue);
 411     TRACE("  field=%s\n", debugstr_w(field));
 412     return SetWindowTextW (part->EditHwnd, field);
 413 }
 414
 415
 416 static BOOL IPADDRESS_GotoNextField (const IPADDRESS_INFO *infoPtr, int cur, int sel)
 417 {
 418     TRACE("\n");
 419
 420     if(cur >= -1 && cur < 4) {
 421         IPADDRESS_ConstrainField(infoPtr, cur);
 422
 423         if(cur < 3) {
 424             const IPPART_INFO *next = &infoPtr->Part[cur + 1];
 425             int start = 0, end = 0;
 426             SetFocus (next->EditHwnd);
 427             if (sel != POS_DEFAULT) {
 428                 if (sel == POS_RIGHT)
 429                     start = end = GetWindowTextLengthW(next->EditHwnd);
 430                 else if (sel == POS_SELALL)
 431                     end = -1;
 432                 SendMessageW(next->EditHwnd, EM_SETSEL, start, end);
 433             }
 434             return TRUE;
 435         }
 436
 437     }
 438     return FALSE;
 439 }
 440
 441
 442 /*
 443  * period: move and select the text in the next field to the right if
 444  *         the current field is not empty(l!=0), we are not in the
 445  *         left most position, and nothing is selected(startsel==endsel)
 446  *
 447  * spacebar: same behavior as period
 448  *
 449  * alpha characters: completely ignored
 450  *
 451  * digits: accepted when field text length < 2 ignored otherwise.
 452  *         when 3 numbers have been entered into the field the value
 453  *         of the field is checked, if the field value exceeds the
 454  *         maximum value and is changed the field remains the current
 455  *         field, otherwise focus moves to the field to the right
 456  *
 457  * tab: change focus from the current ipaddress control to the next
 458  *      control in the tab order
 459  *
 460  * right arrow: move to the field on the right to the left most
 461  *              position in that field if no text is selected,
 462  *              we are in the right most position in the field,
 463  *              we are not in the right most field
 464  *
 465  * left arrow: move to the field on the left to the right most
 466  *             position in that field if no text is selected,
 467  *             we are in the left most position in the current field
 468  *             and we are not in the left most field
 469  *
 470  * backspace: delete the character to the left of the cursor position,
 471  *            if none are present move to the field on the left if
 472  *            we are not in the left most field and delete the right
 473  *            most digit in that field while keeping the cursor
 474  *            on the right side of the field
 475  */
 476 LRESULT CALLBACK
 477 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 478 {
 479     HWND Self = GetPropW (hwnd, IP_SUBCLASS_PROP);
 480     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (Self, 0);
 481     CHAR c = (CHAR)wParam;
 482     INT index, len = 0, startsel, endsel;
 483     IPPART_INFO *part;
 484
 485     TRACE("(hwnd=%p msg=0x%x wparam=0x%lx lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 486
 487     if ( (index = IPADDRESS_GetPartIndex(infoPtr, hwnd)) < 0) return 0;
 488     part = &infoPtr->Part[index];
 489
 490     if (uMsg == WM_CHAR || uMsg == WM_KEYDOWN) {
 491         len = GetWindowTextLengthW (hwnd);
 492         SendMessageW(hwnd, EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 493     }
 494     switch (uMsg) {
 495         case WM_CHAR:
 496             if(isdigit(c)) {
 497                 if(len == 2 && startsel==endsel && endsel==len) {
 498                     /* process the digit press before we check the field */
 499                     int return_val = CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 500
 501                     /* if the field value was changed stay at the current field */
 502                     if(!IPADDRESS_ConstrainField(infoPtr, index))
 503                         IPADDRESS_GotoNextField (infoPtr, index, POS_DEFAULT);
 504
 505                     return return_val;
 506                 } else if (len == 3 && startsel==endsel && endsel==len)
 507                     IPADDRESS_GotoNextField (infoPtr, index, POS_SELALL);
 508                 else if (len < 3 || startsel != endsel) break;
 509             } else if(c == '.' || c == ' ') {
 510                 if(len && startsel==endsel && startsel != 0) {
 511                     IPADDRESS_GotoNextField(infoPtr, index, POS_SELALL);
 512                 }
 513             } else if (c == VK_BACK) break;
 514             return 0;
 515
 516         case WM_KEYDOWN:
 517             switch(c) {
 518                 case VK_RIGHT:
 519                     if(startsel==endsel && startsel==len) {
 520                         IPADDRESS_GotoNextField(infoPtr, index, POS_LEFT);
 521                         return 0;
 522                     }
 523                     break;
 524                 case VK_LEFT:
 525                     if(startsel==0 && startsel==endsel && index > 0) {
 526                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 527                         return 0;
 528                     }
 529                     break;
 530                 case VK_BACK:
 531                     if(startsel==endsel && startsel==0 && index > 0) {
 532                         IPPART_INFO *prev = &infoPtr->Part[index-1];
 533                         WCHAR val[10];
 534
 535                         if(GetWindowTextW(prev->EditHwnd, val, 5)) {
 536                             val[lstrlenW(val) - 1] = 0;
 537                             SetWindowTextW(prev->EditHwnd, val);
 538                         }
 539
 540                         IPADDRESS_GotoNextField(infoPtr, index - 2, POS_RIGHT);
 541                         return 0;
 542                     }
 543                     break;
 544             }
 545             break;
 546         case WM_KILLFOCUS:
 547             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 548                 IPADDRESS_Notify(infoPtr, EN_KILLFOCUS);
 549             break;
 550         case WM_SETFOCUS:
 551             if (IPADDRESS_GetPartIndex(infoPtr, (HWND)wParam) < 0)
 552                 IPADDRESS_Notify(infoPtr, EN_SETFOCUS);
 553             break;
 554     }
 555     return CallWindowProcW (part->OrigProc, hwnd, uMsg, wParam, lParam);
 556 }
 557
 558
 559 static LRESULT WINAPI
 560 IPADDRESS_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 561 {
 562     IPADDRESS_INFO *infoPtr = (IPADDRESS_INFO *)GetWindowLongPtrW (hwnd, 0);
 563
 564     TRACE("(hwnd=%p msg=0x%x wparam=0x%lx lparam=0x%lx)\n", hwnd, uMsg, wParam, lParam);
 565
 566     if (!infoPtr && (uMsg != WM_CREATE))
 567         return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 568
 569     switch (uMsg)
 570     {
 571         case WM_CREATE:
 572             return IPADDRESS_Create (hwnd, (LPCREATESTRUCTA)lParam);
 573
 574         case WM_DESTROY:
 575             return IPADDRESS_Destroy (infoPtr);
 576
 577         case WM_ENABLE:
 578             return IPADDRESS_Enable (infoPtr, (BOOL)wParam);
 579
 580         case WM_PAINT:
 581             return IPADDRESS_Paint (infoPtr, (HDC)wParam);
 582
 583         case WM_COMMAND:
 584             switch(wParam >> 16) {
 585                 case EN_CHANGE:
 586                     IPADDRESS_UpdateText(infoPtr);
 587                     IPADDRESS_Notify(infoPtr, EN_CHANGE);
 588                     break;
 589                 case EN_KILLFOCUS:
 590                     IPADDRESS_ConstrainField(infoPtr, IPADDRESS_GetPartIndex(infoPtr, (HWND)lParam));
 591                     break;
 592             }
 593             break;
 594
 595         case WM_SYSCOLORCHANGE:
 596             COMCTL32_RefreshSysColors();
 597             return 0;
 598
 599         case IPM_CLEARADDRESS:
 600             IPADDRESS_ClearAddress (infoPtr);
 601             break;
 602
 603         case IPM_SETADDRESS:
 604             return IPADDRESS_SetAddress (infoPtr, (DWORD)lParam);
 605
 606         case IPM_GETADDRESS:
 607             return IPADDRESS_GetAddress (infoPtr, (LPDWORD)lParam);
 608
 609         case IPM_SETRANGE:
 610             return IPADDRESS_SetRange (infoPtr, (int)wParam, (WORD)lParam);
 611
 612         case IPM_SETFOCUS:
 613             IPADDRESS_SetFocusToField (infoPtr, (int)wParam);
 614             break;
 615
 616         case IPM_ISBLANK:
 617             return IPADDRESS_IsBlank (infoPtr);
 618
 619         default:
 620             if ((uMsg >= WM_USER) && (uMsg < WM_APP) && !COMCTL32_IsReflectedMessage(uMsg))
 621                 ERR("unknown msg %04x wp=%08lx lp=%08lx\n", uMsg, wParam, lParam);
 622             return DefWindowProcW (hwnd, uMsg, wParam, lParam);
 623     }
 624     return 0;
 625 }
 626
 627
 628 void IPADDRESS_Register (void)
 629 {
 630     WNDCLASSW wndClass;
 631
 632     ZeroMemory (&wndClass, sizeof(WNDCLASSW));
 633     wndClass.style         = CS_GLOBALCLASS | CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;
 634     wndClass.lpfnWndProc   = IPADDRESS_WindowProc;
 635     wndClass.cbClsExtra    = 0;
 636     wndClass.cbWndExtra    = sizeof(IPADDRESS_INFO *);
 637     wndClass.hCursor       = LoadCursorW (0, (LPWSTR)IDC_IBEAM);
 638     wndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
 639     wndClass.lpszClassName = WC_IPADDRESSW;
 640
 641     RegisterClassW (&wndClass);
 642 }
 643
 644
 645 void IPADDRESS_Unregister (void)
 646 {
 647     UnregisterClassW (WC_IPADDRESSW, NULL);
 648 }