dlls/comctl32/ipaddress.c

   1 /*
   2  * IP Address control
   3  *
   4  * Copyright 1999 Chris Morgan<cmorgan@wpi.edu> and
   5  *                James Abbatiello<abbeyj@wpi.edu>
   6  * Copyright 1998, 1999 Eric Kohl
   7  * Copyright 1998 Alex Priem <alexp@sci.kun.nl>
   8  *
   9  * NOTES
  10  *
  11  * TODO:
  12  *    -Edit control doesn't support the ES_CENTER style which prevents
  13  *     this ipaddress control from having centered text look like the
  14  *     windows ipaddress control
  15  *    -Check all notifications/behavior.
  16  *    -Optimization:
  17  *        -include lpipsi in IPADDRESS_INFO.
  18  *        -CurrentFocus: field that has focus at moment of processing.
  19  *        -connect Rect32 rcClient.
  20  *        -check ipaddress.cpp for missing features.
  21  *    -refresh: draw '.' instead of setpixel.
  22  */
  23
  24 #include <ctype.h>
  25 #include <stdlib.h>
  26
  27 #include "winbase.h"
  28 #include "commctrl.h"
  29 #include "ipaddress.h"
  30 #include "heap.h"
  31 #include "debugtools.h"
  32
  33 DEFAULT_DEBUG_CHANNEL(ipaddress)
  34
  35 #define IPADDRESS_GetInfoPtr(hwnd) ((IPADDRESS_INFO *)GetWindowLongA (hwnd, 0))
  36
  37 static BOOL
  38 IPADDRESS_SendNotify (HWND hwnd, UINT command);
  39 static BOOL
  40 IPADDRESS_SendIPAddressNotify (HWND hwnd, UINT field, BYTE newValue);
  41
  42 /* property name of tooltip window handle */
  43 #define IP_SUBCLASS_PROP "CCIP32SubclassInfo"
  44
  45
  46 static LRESULT CALLBACK
  47 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
  48
  49
  50 static VOID
  51 IPADDRESS_Refresh (HWND hwnd, HDC hdc)
  52 {
  53   RECT rcClient;
  54   HBRUSH hbr;
  55   COLORREF clr=GetSysColor (COLOR_3DDKSHADOW);
  56   int i,x,fieldsize;
  57
  58   GetClientRect (hwnd, &rcClient);
  59   hbr = CreateSolidBrush (RGB(255,255,255));
  60   DrawEdge (hdc, &rcClient, EDGE_SUNKEN, BF_RECT | BF_ADJUST);
  61   FillRect (hdc, &rcClient, hbr);
  62   DeleteObject (hbr);
  63
  64   x=rcClient.left;
  65   fieldsize=(rcClient.right-rcClient.left) / 4;
  66
  67   for (i=0; i<3; i++) {         /* Should draw text "." here */
  68     x+=fieldsize;
  69     SetPixel (hdc, x,   13, clr);
  70     SetPixel (hdc, x,   14, clr);
  71     SetPixel (hdc, x+1, 13, clr);
  72     SetPixel (hdc, x+1, 14, clr);
  73   }
  74 }
  75
  76
  77 static LRESULT
  78 IPADDRESS_Create (HWND hwnd, WPARAM wParam, LPARAM lParam)
  79 {
  80   IPADDRESS_INFO *infoPtr;
  81   RECT rcClient, edit;
  82   int i,fieldsize;
  83   LPIP_SUBCLASS_INFO lpipsi;
  84
  85
  86   infoPtr = (IPADDRESS_INFO *)COMCTL32_Alloc (sizeof(IPADDRESS_INFO));
  87   SetWindowLongA (hwnd, 0, (DWORD)infoPtr);
  88
  89   GetClientRect (hwnd, &rcClient);
  90
  91   fieldsize=(rcClient.right-rcClient.left) /4;
  92
  93   edit.top   =rcClient.top+2;
  94   edit.bottom=rcClient.bottom-2;
  95
  96   lpipsi=(LPIP_SUBCLASS_INFO) GetPropA ((HWND)hwnd, IP_SUBCLASS_PROP);
  97   if (lpipsi == NULL)  {
  98     lpipsi = (LPIP_SUBCLASS_INFO) COMCTL32_Alloc (sizeof(IP_SUBCLASS_INFO));
  99     lpipsi->hwnd = hwnd;
 100     lpipsi->uRefCount++;
 101     SetPropA ((HWND)hwnd, IP_SUBCLASS_PROP, (HANDLE)lpipsi);
 102 /*              infoPtr->lpipsi= lpipsi; */
 103   } else
 104     WARN("IP-create called twice\n");
 105
 106   for (i=0; i<=3; i++)
 107   {
 108     infoPtr->LowerLimit[i]=0;
 109     infoPtr->UpperLimit[i]=255;
 110     edit.left=rcClient.left+i*fieldsize+6;
 111     edit.right=rcClient.left+(i+1)*fieldsize-2;
 112     lpipsi->hwndIP[i]= CreateWindowA ("edit", NULL,
 113         WS_CHILD | WS_VISIBLE | ES_CENTER,
 114         edit.left, edit.top, edit.right-edit.left, edit.bottom-edit.top,
 115         hwnd, (HMENU) 1, GetWindowLongA (hwnd, GWL_HINSTANCE), NULL);
 116     lpipsi->wpOrigProc[i]= (WNDPROC)
 117         SetWindowLongA (lpipsi->hwndIP[i],GWL_WNDPROC, (LONG)
 118         IPADDRESS_SubclassProc);
 119     SetPropA ((HWND)lpipsi->hwndIP[i], IP_SUBCLASS_PROP, (HANDLE)lpipsi);
 120   }
 121
 122   lpipsi->infoPtr= infoPtr;
 123
 124   return 0;
 125 }
 126
 127
 128 static LRESULT
 129 IPADDRESS_Destroy (HWND hwnd, WPARAM wParam, LPARAM lParam)
 130 {
 131   int i;
 132   IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd);
 133   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO)
 134             GetPropA ((HWND)hwnd, IP_SUBCLASS_PROP);
 135
 136   for (i=0; i<=3; i++) {
 137     SetWindowLongA ((HWND)lpipsi->hwndIP[i], GWL_WNDPROC,
 138                   (LONG)lpipsi->wpOrigProc[i]);
 139   }
 140
 141   COMCTL32_Free (infoPtr);
 142   return 0;
 143 }
 144
 145
 146 static LRESULT
 147 IPADDRESS_KillFocus (HWND hwnd, WPARAM wParam, LPARAM lParam)
 148 {
 149   HDC hdc;
 150
 151   TRACE("\n");
 152   hdc = GetDC (hwnd);
 153   IPADDRESS_Refresh (hwnd, hdc);
 154   ReleaseDC (hwnd, hdc);
 155
 156   IPADDRESS_SendIPAddressNotify (hwnd, 0, 0);  /* FIXME: should use -1 */
 157   IPADDRESS_SendNotify (hwnd, EN_KILLFOCUS);
 158   InvalidateRect (hwnd, NULL, TRUE);
 159
 160   return 0;
 161 }
 162
 163
 164 static LRESULT
 165 IPADDRESS_Paint (HWND hwnd, WPARAM wParam)
 166 {
 167   HDC hdc;
 168   PAINTSTRUCT ps;
 169
 170   hdc = wParam==0 ? BeginPaint (hwnd, &ps) : (HDC)wParam;
 171   IPADDRESS_Refresh (hwnd, hdc);
 172   if(!wParam)
 173     EndPaint (hwnd, &ps);
 174   return 0;
 175 }
 176
 177
 178 static LRESULT
 179 IPADDRESS_SetFocus (HWND hwnd, WPARAM wParam, LPARAM lParam)
 180 {
 181   HDC hdc;
 182
 183   TRACE("\n");
 184
 185   hdc = GetDC (hwnd);
 186   IPADDRESS_Refresh (hwnd, hdc);
 187   ReleaseDC (hwnd, hdc);
 188
 189   return 0;
 190 }
 191
 192
 193 static LRESULT
 194 IPADDRESS_Size (HWND hwnd, WPARAM wParam, LPARAM lParam)
 195 {
 196   /* IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd); */
 197   TRACE("\n");
 198   return 0;
 199 }
 200
 201
 202 static BOOL
 203 IPADDRESS_SendNotify (HWND hwnd, UINT command)
 204 {
 205   TRACE("%x\n",command);
 206   return (BOOL)SendMessageA (GetParent (hwnd), WM_COMMAND,
 207               MAKEWPARAM (GetWindowLongA (hwnd, GWL_ID),command), (LPARAM)hwnd);
 208 }
 209
 210
 211 static BOOL
 212 IPADDRESS_SendIPAddressNotify (HWND hwnd, UINT field, BYTE newValue)
 213 {
 214   NMIPADDRESS nmip;
 215
 216   TRACE("%x %x\n",field,newValue);
 217   nmip.hdr.hwndFrom = hwnd;
 218   nmip.hdr.idFrom   = GetWindowLongA (hwnd, GWL_ID);
 219   nmip.hdr.code     = IPN_FIELDCHANGED;
 220
 221   nmip.iField=field;
 222   nmip.iValue=newValue;
 223
 224   return (BOOL)SendMessageA (GetParent (hwnd), WM_NOTIFY,
 225                              (WPARAM)nmip.hdr.idFrom, (LPARAM)&nmip);
 226 }
 227
 228
 229 static LRESULT
 230 IPADDRESS_ClearAddress (HWND hwnd, WPARAM wParam, LPARAM lParam)
 231 {
 232   int i;
 233   HDC hdc;
 234   char buf[1];
 235   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO)
 236             GetPropA ((HWND)hwnd,IP_SUBCLASS_PROP);
 237
 238   TRACE("\n");
 239
 240   buf[0]=0;
 241   for (i=0; i<=3; i++)
 242     SetWindowTextA (lpipsi->hwndIP[i],buf);
 243
 244   hdc = GetDC (hwnd);
 245   IPADDRESS_Refresh (hwnd, hdc);
 246   ReleaseDC (hwnd, hdc);
 247
 248   return 0;
 249 }
 250
 251
 252 static LRESULT
 253 IPADDRESS_IsBlank (HWND hwnd, WPARAM wParam, LPARAM lParam)
 254 {
 255   int i;
 256   char buf[20];
 257   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO)
 258             GetPropA ((HWND)hwnd, IP_SUBCLASS_PROP);
 259
 260   TRACE("\n");
 261
 262   for (i=0; i<=3; i++) {
 263     GetWindowTextA (lpipsi->hwndIP[i],buf,5);
 264     if (buf[0])
 265       return 0;
 266   }
 267
 268   return 1;
 269 }
 270
 271
 272 static LRESULT
 273 IPADDRESS_GetAddress (HWND hwnd, WPARAM wParam, LPARAM lParam)
 274 {
 275   char field[20];
 276   int i,valid,fieldvalue;
 277   DWORD ip_addr;
 278   IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd);
 279   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO)
 280             GetPropA ((HWND)hwnd, IP_SUBCLASS_PROP);
 281
 282   TRACE("\n");
 283
 284   valid=0;
 285   ip_addr=0;
 286   for (i=0; i<=3; i++) {
 287     GetWindowTextA (lpipsi->hwndIP[i],field,4);
 288     ip_addr*=256;
 289     if (field[0]) {
 290       field[3]=0;
 291       fieldvalue=atoi(field);
 292       if (fieldvalue<infoPtr->LowerLimit[i])
 293         fieldvalue=infoPtr->LowerLimit[i];
 294       if (fieldvalue>infoPtr->UpperLimit[i])
 295         fieldvalue=infoPtr->UpperLimit[i];
 296       ip_addr+=fieldvalue;
 297       valid++;
 298     }
 299   }
 300
 301   *(LPDWORD) lParam=ip_addr;
 302
 303   return valid;
 304 }
 305
 306
 307 static LRESULT
 308 IPADDRESS_SetRange (HWND hwnd, WPARAM wParam, LPARAM lParam)
 309 {
 310   IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd);
 311   INT index;
 312
 313   TRACE("\n");
 314
 315   index=(INT) wParam;
 316   if ((index<0) || (index>3)) return 0;
 317
 318   infoPtr->LowerLimit[index]=lParam & 0xff;
 319   infoPtr->UpperLimit[index]=(lParam >>8)  & 0xff;
 320   return 1;
 321 }
 322
 323
 324 static LRESULT
 325 IPADDRESS_SetAddress (HWND hwnd, WPARAM wParam, LPARAM lParam)
 326 {
 327   IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd);
 328   HDC hdc;
 329   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO)
 330             GetPropA ((HWND)hwnd, IP_SUBCLASS_PROP);
 331   int i,ip_address,value;
 332   char buf[20];
 333
 334   TRACE("\n");
 335   ip_address=(DWORD) lParam;
 336
 337   for (i=3; i>=0; i--) {
 338     value=ip_address & 0xff;
 339     if ((value>=infoPtr->LowerLimit[i]) && (value<=infoPtr->UpperLimit[i]))
 340     {
 341       sprintf (buf,"%d",value);
 342       SetWindowTextA (lpipsi->hwndIP[i],buf);
 343       IPADDRESS_SendNotify (hwnd, EN_CHANGE);
 344     }
 345     ip_address/=256;
 346   }
 347
 348   hdc = GetDC (hwnd);           /* & send notifications */
 349   IPADDRESS_Refresh (hwnd, hdc);
 350   ReleaseDC (hwnd, hdc);
 351
 352   return TRUE;
 353 }
 354
 355
 356 static LRESULT
 357 IPADDRESS_SetFocusToField (HWND hwnd, WPARAM wParam, LPARAM lParam)
 358 {
 359   /* IPADDRESS_INFO *infoPtr = IPADDRESS_GetInfoPtr (hwnd); */
 360   LPIP_SUBCLASS_INFO lpipsi=(LPIP_SUBCLASS_INFO) GetPropA ((HWND)hwnd,
 361                                                    IP_SUBCLASS_PROP);
 362   INT index;
 363
 364   index=(INT) wParam;
 365   TRACE(" %d\n", index);
 366   if ((index<0) || (index>3)) return 0;
 367
 368   SetFocus (lpipsi->hwndIP[index]);
 369
 370   return 1;
 371 }
 372
 373
 374 static LRESULT
 375 IPADDRESS_LButtonDown (HWND hwnd, WPARAM wParam, LPARAM lParam)
 376 {
 377   TRACE("\n");
 378
 379   SetFocus (hwnd);
 380   IPADDRESS_SendNotify (hwnd, EN_SETFOCUS);
 381   IPADDRESS_SetFocusToField (hwnd, 0, 0);
 382
 383   return TRUE;
 384 }
 385
 386
 387 static INT
 388 IPADDRESS_CheckField (LPIP_SUBCLASS_INFO lpipsi, int currentfield)
 389 {
 390   int newField,fieldvalue;
 391   char field[20];
 392   IPADDRESS_INFO *infoPtr=lpipsi->infoPtr;
 393
 394   if(currentfield >= 0 && currentfield < 4)
 395   {
 396     TRACE("\n");
 397     GetWindowTextA (lpipsi->hwndIP[currentfield],field,4);
 398     if (field[0])
 399     {
 400       field[3]=0;
 401       newField=-1;
 402       fieldvalue=atoi(field);
 403
 404       if (fieldvalue < infoPtr->LowerLimit[currentfield])
 405         newField=infoPtr->LowerLimit[currentfield];
 406
 407       if (fieldvalue > infoPtr->UpperLimit[currentfield])
 408         newField=infoPtr->UpperLimit[currentfield];
 409
 410       if (newField >= 0)
 411       {
 412         sprintf (field,"%d",newField);
 413         SetWindowTextA (lpipsi->hwndIP[currentfield], field);
 414         return TRUE;
 415       }
 416     }
 417   }
 418   return FALSE;
 419 }
 420
 421
 422 static INT
 423 IPADDRESS_GotoNextField (LPIP_SUBCLASS_INFO lpipsi, int currentfield)
 424 {
 425   if(currentfield >= -1 && currentfield < 4)
 426   {
 427     IPADDRESS_CheckField(lpipsi, currentfield); /* check the fields value */
 428
 429     if(currentfield < 3)
 430     {
 431       SetFocus (lpipsi->hwndIP[currentfield+1]);
 432       return TRUE;
 433     }
 434   }
 435   return FALSE;
 436 }
 437
 438
 439 /* period: move and select the text in the next field to the right if */
 440 /*         the current field is not empty(l!=0), we are not in the */
 441 /*         left most position, and nothing is selected(startsel==endsel) */
 442
 443 /* spacebar: same behavior as period */
 444
 445 /* alpha characters: completely ignored */
 446
 447 /* digits: accepted when field text length < 2 ignored otherwise. */
 448 /*         when 3 numbers have been entered into the field the value */
 449 /*         of the field is checked, if the field value exceeds the */
 450 /*         maximum value and is changed the field remains the current */
 451 /*         field, otherwise focus moves to the field to the right */
 452
 453 /* tab: change focus from the current ipaddress control to the next */
 454 /*      control in the tab order */
 455
 456 /* right arrow: move to the field on the right to the left most */
 457 /*              position in that field if no text is selected, */
 458 /*              we are in the right most position in the field, */
 459 /*              we are not in the right most field */
 460
 461 /* left arrow: move to the field on the left to the right most */
 462 /*             position in that field if no text is selected, */
 463 /*             we are in the left most position in the current field */
 464 /*             and we are not in the left most field */
 465
 466 /* backspace: delete the character to the left of the cursor position, */
 467 /*            if none are present move to the field on the left if */
 468 /*            we are not in the left most field and delete the right */
 469 /*            most digit in that field while keeping the cursor */
 470 /*            on the right side of the field */
 471
 472
 473 LRESULT CALLBACK
 474 IPADDRESS_SubclassProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 475 {
 476   IPADDRESS_INFO *infoPtr;
 477   LPIP_SUBCLASS_INFO lpipsi = (LPIP_SUBCLASS_INFO) GetPropA
 478         ((HWND)hwnd,IP_SUBCLASS_PROP);
 479   CHAR c = (CHAR)wParam;
 480   INT i, l, index, startsel, endsel;
 481
 482   infoPtr = lpipsi->infoPtr;
 483   index=0;             /* FIXME */
 484   for (i=0; i<=3; i++)
 485     if (lpipsi->hwndIP[i]==hwnd) index=i;
 486
 487   switch (uMsg) {
 488   case WM_CHAR:
 489     if(isdigit(c)) /* process all digits */
 490     {
 491       int return_val;
 492       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 493       l = GetWindowTextLengthA (lpipsi->hwndIP[index]);
 494       if(l==2 && startsel==endsel) /* field is full after this key is processed */
 495       {
 496         /* process the digit press before we check the field */
 497         return_val = CallWindowProcA (lpipsi->wpOrigProc[index], hwnd, uMsg, wParam, lParam);
 498
 499         /* if the field value was changed stay at the current field */
 500         if(!IPADDRESS_CheckField(lpipsi, index))
 501           IPADDRESS_GotoNextField (lpipsi,index);
 502
 503         return return_val;
 504       }
 505
 506       if(l > 2) /* field is full, stop key messages */
 507       {
 508         lParam = 0;
 509         wParam = 0;
 510       }
 511       break;
 512     }
 513
 514     if(c == '.') /* VK_PERIOD */
 515     {
 516       l = GetWindowTextLengthA(lpipsi->hwndIP[index]);
 517       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 518       if(l != 0 && startsel==endsel && startsel != 0)
 519       {
 520         IPADDRESS_GotoNextField(lpipsi, index);
 521         SendMessageA(lpipsi->hwndIP[index+1], EM_SETSEL, (WPARAM)0, (LPARAM)3);
 522       }
 523     }
 524
 525     /* stop all other characters */
 526     wParam = 0;
 527     lParam = 0;
 528     break;
 529
 530   case WM_KEYDOWN:
 531     if(c == VK_SPACE)
 532     {
 533       l = GetWindowTextLengthA(lpipsi->hwndIP[index]);
 534       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 535       if(l != 0 && startsel==endsel && startsel != 0)
 536       {
 537         IPADDRESS_GotoNextField(lpipsi, index);
 538         SendMessageA(lpipsi->hwndIP[index+1], EM_SETSEL, (WPARAM)0, (LPARAM)3);
 539       }
 540     }
 541
 542     if(c == VK_RIGHT)
 543     {
 544       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 545       l = GetWindowTextLengthA (lpipsi->hwndIP[index]);
 546
 547       if(startsel==endsel && startsel==l)
 548       {
 549         IPADDRESS_GotoNextField(lpipsi, index);
 550         SendMessageA(lpipsi->hwndIP[index+1], EM_SETSEL, (WPARAM)0,(LPARAM)0);
 551       }
 552     }
 553
 554     if(c == VK_LEFT)
 555     {
 556       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 557       if(startsel==0 && startsel==endsel && index > 0)
 558       {
 559         IPADDRESS_GotoNextField(lpipsi, index - 2);
 560         l = GetWindowTextLengthA(lpipsi->hwndIP[index-1]);
 561         SendMessageA(lpipsi->hwndIP[index-1], EM_SETSEL, (WPARAM)l,(LPARAM)l);
 562       }
 563     }
 564
 565     if(c == VK_BACK) /* VK_BACKSPACE */
 566     {
 567       CHAR buf[4];
 568
 569       SendMessageA(lpipsi->hwndIP[index], EM_GETSEL, (WPARAM)&startsel, (LPARAM)&endsel);
 570       l = GetWindowTextLengthA (lpipsi->hwndIP[index]);
 571       if(startsel==endsel && startsel==0 && index > 0)
 572       {
 573         l = GetWindowTextLengthA(lpipsi->hwndIP[index-1]);
 574         if(l!=0)
 575         {
 576           GetWindowTextA (lpipsi->hwndIP[index-1],buf,4);
 577           buf[l-1] = '\0';
 578           SetWindowTextA(lpipsi->hwndIP[index-1], buf);
 579           SendMessageA(lpipsi->hwndIP[index-1], EM_SETSEL, (WPARAM)l,(LPARAM)l);
 580         }
 581         IPADDRESS_GotoNextField(lpipsi, index - 2);
 582       }
 583     }
 584     break;
 585
 586   default:
 587     break;
 588   }
 589   return CallWindowProcA (lpipsi->wpOrigProc[index], hwnd, uMsg, wParam, lParam);
 590 }
 591
 592
 593 static LRESULT WINAPI
 594 IPADDRESS_WindowProc (HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 595 {
 596   switch (uMsg)
 597   {
 598     case IPM_CLEARADDRESS:
 599       return IPADDRESS_ClearAddress (hwnd, wParam, lParam);
 600
 601     case IPM_SETADDRESS:
 602       return IPADDRESS_SetAddress (hwnd, wParam, lParam);
 603
 604     case IPM_GETADDRESS:
 605       return IPADDRESS_GetAddress (hwnd, wParam, lParam);
 606
 607     case IPM_SETRANGE:
 608       return IPADDRESS_SetRange (hwnd, wParam, lParam);
 609
 610     case IPM_SETFOCUS:
 611       return IPADDRESS_SetFocusToField (hwnd, wParam, lParam);
 612
 613     case IPM_ISBLANK:
 614       return IPADDRESS_IsBlank (hwnd, wParam, lParam);
 615
 616     case WM_CREATE:
 617       return IPADDRESS_Create (hwnd, wParam, lParam);
 618
 619     case WM_DESTROY:
 620       return IPADDRESS_Destroy (hwnd, wParam, lParam);
 621
 622     case WM_GETDLGCODE:
 623       return DLGC_WANTARROWS | DLGC_WANTCHARS;
 624
 625     case WM_KILLFOCUS:
 626       return IPADDRESS_KillFocus (hwnd, wParam, lParam);
 627
 628     case WM_LBUTTONDOWN:
 629       return IPADDRESS_LButtonDown (hwnd, wParam, lParam);
 630
 631     case WM_PAINT:
 632       return IPADDRESS_Paint (hwnd, wParam);
 633
 634     case WM_SETFOCUS:
 635       return IPADDRESS_SetFocus (hwnd, wParam, lParam);
 636
 637     case WM_SIZE:
 638       return IPADDRESS_Size (hwnd, wParam, lParam);
 639
 640     default:
 641       if (uMsg >= WM_USER)
 642         ERR("unknown msg %04x wp=%08x lp=%08lx\n",
 643                      uMsg, wParam, lParam);
 644       return DefWindowProcA (hwnd, uMsg, wParam, lParam);
 645     }
 646     return 0;
 647 }
 648
 649
 650 void IPADDRESS_Register (void)
 651 {
 652   WNDCLASSA wndClass;
 653
 654   if (GlobalFindAtomA (WC_IPADDRESSA)) return;
 655
 656   ZeroMemory (&wndClass, sizeof(WNDCLASSA));
 657   wndClass.style         = CS_GLOBALCLASS;
 658   wndClass.lpfnWndProc   = (WNDPROC)IPADDRESS_WindowProc;
 659   wndClass.cbClsExtra    = 0;
 660   wndClass.cbWndExtra    = sizeof(IPADDRESS_INFO *);
 661   wndClass.hCursor       = LoadCursorA (0, IDC_ARROWA);
 662   wndClass.hbrBackground = (HBRUSH)(COLOR_3DFACE + 1);
 663   wndClass.lpszClassName = WC_IPADDRESSA;
 664
 665   RegisterClassA (&wndClass);
 666 }
 667
 668
 669 VOID IPADDRESS_Unregister (void)
 670 {
 671   if (GlobalFindAtomA (WC_IPADDRESSA))
 672   UnregisterClassA (WC_IPADDRESSA, (HINSTANCE)NULL);
 673 }