dlls/serialui/confdlg.c

   1 /*
   2  * This DLL contains the user interface for the serial driver.
   3  *    a dialog box to configure the specified COMM port
   4  *    an interface to the control panel (??)
   5  *    functions to load and save default configuration
   6  *
   7  * Eventually the 32 bit comm port driver could be moved into here
   8  * and interfaced to KERNEL32 using the WIN95 or WINNT comm driver interface.
   9  * This way, different driver DLLS could be written to support other
  10  * serial interfaces, such as X.25, etc.
  11  *
  12  * Basic structure copied from COMCTL32 code.
  13  *
  14  * Copyright 2000, 2004 Mike McCormack
  15  *
  16  * This library is free software; you can redistribute it and/or
  17  * modify it under the terms of the GNU Lesser General Public
  18  * License as published by the Free Software Foundation; either
  19  * version 2.1 of the License, or (at your option) any later version.
  20  *
  21  * This library is distributed in the hope that it will be useful,
  22  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  23  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  24  * Lesser General Public License for more details.
  25  *
  26  * You should have received a copy of the GNU Lesser General Public
  27  * License along with this library; if not, write to the Free Software
  28  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  29  */
  30
  31 #include <string.h>
  32 #include <stdarg.h>
  33 #include <stdio.h>
  34
  35 #include "windef.h"
  36 #include "winbase.h"
  37 #include "winnls.h"
  38 #include "winreg.h"
  39 #include "wingdi.h"
  40 #include "winuser.h"
  41 #include "wine/debug.h"
  42 #include "serialui.h"
  43 #include "winerror.h"
  44
  45 WINE_DEFAULT_DEBUG_CHANNEL(comm);
  46
  47 static HMODULE SERIALUI_hModule;
  48
  49 /***********************************************************************
  50  * DllMain [Internal] Initializes the internal 'SERIALUI.DLL'.
  51  *
  52  * PARAMS
  53  *     hinstDLL    [I] handle to the DLL's instance
  54  *     fdwReason   [I]
  55  *     lpvReserved [I] reserved, must be NULL
  56  *
  57  * RETURNS
  58  *     Success: TRUE
  59  *     Failure: FALSE
  60  */
  61
  62 BOOL WINAPI DllMain (HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpvReserved)
  63 {
  64     TRACE("%p,%lx,%p\n", hinstDLL, fdwReason, lpvReserved);
  65
  66     switch (fdwReason) {
  67         case DLL_PROCESS_ATTACH:
  68             DisableThreadLibraryCalls(hinstDLL);
  69             SERIALUI_hModule = hinstDLL;
  70             break;
  71     }
  72
  73     return TRUE;
  74 }
  75
  76
  77 /***********************************************************************
  78  * EnumPropPages (SERIALUI.2)
  79  *
  80  * Called by the device manager to add prop sheets in Control Panel ???
  81  * Pointed to in Win98 registry by
  82  * \System\CurrentControlSet\Services\Class\ports\0000\EnumPropPages =
  83  *  "serialui.dll,EnumPropPages"
  84  */
  85 typedef LPVOID LPDEVICE_INFO;
  86 typedef LPVOID LPFNADDPROPSHEETPAGE;
  87 BOOL WINAPI EnumPropPages(LPDEVICE_INFO pdi, LPFNADDPROPSHEETPAGE pfnAdd, LPARAM lParam )
  88 {
  89     FIXME("(%p %p %Ix)\n",pdi,pfnAdd,lParam);
  90     return FALSE;
  91 }
  92
  93 /*
  94  * These data structures are convert from values used in fields of a DCB
  95  * to strings used in the CommConfigDialog.
  96  */
  97 typedef struct tagPARAM2STRDATA
  98 {
  99     DWORD        val;
 100     const CHAR  *name;
 101 } PARAM2STRDATA, *LPPARAM2STRDATA;
 102
 103 typedef struct tagPARAM2STR
 104 {
 105     DWORD         dwSize;
 106     LPPARAM2STRDATA data;
 107 } PARAM2STR, *LPPARAM2STR;
 108 typedef const PARAM2STR *LPCPARAM2STR;
 109
 110 static PARAM2STRDATA SERIALUI_Baud2StrData[]={
 111   {110, "110"}, {300, "300"}, {600, "600"}, {1200, "1200"},
 112   {2400, "2400"}, {4800, "4800"}, {9600, "9600"}, {14400, "14400"},
 113   {19200, "19200"}, {38400L, "38400"}, {56000L, "56000"}, {57600L, "57600"},
 114   {115200L, "115200"}, {128000L, "128000"}, {256000L, "256000"}
 115 };
 116 static PARAM2STR SERIALUI_Baud2Str={ ARRAY_SIZE(SERIALUI_Baud2StrData), SERIALUI_Baud2StrData };
 117
 118 static PARAM2STRDATA SERIALUI_Parity2StrData[]={
 119   {NOPARITY,"None"}, {ODDPARITY,"Odd"}, {EVENPARITY,"Even"}, {MARKPARITY,"Mark"},
 120   {SPACEPARITY,"Space"}
 121 };
 122 static PARAM2STR SERIALUI_Parity2Str={ ARRAY_SIZE(SERIALUI_Parity2StrData), SERIALUI_Parity2StrData };
 123
 124 static PARAM2STRDATA SERIALUI_Stop2StrData[]={
 125   {ONESTOPBIT,"1"}, {ONE5STOPBITS,"1.5"}, {TWOSTOPBITS,"2"}
 126 };
 127 static PARAM2STR SERIALUI_Stop2Str={ ARRAY_SIZE(SERIALUI_Stop2StrData), SERIALUI_Stop2StrData };
 128
 129 static PARAM2STRDATA SERIALUI_Data2StrData[]={
 130   {5,"5"}, {6,"6"}, {7,"7"}, {8, "8"}, {16,"16"}
 131 };
 132 static PARAM2STR SERIALUI_Data2Str={ ARRAY_SIZE(SERIALUI_Data2StrData), SERIALUI_Data2StrData };
 133
 134 static PARAM2STRDATA SERIALUI_Flow2StrData[]={
 135   {0,"None"}, {1,"Hardware (RTS/CTS)"}, {2,"Software (XON/XOFF)"}
 136 };
 137 static PARAM2STR SERIALUI_Flow2Str={ ARRAY_SIZE(SERIALUI_Flow2StrData), SERIALUI_Flow2StrData };
 138
 139 /*
 140  * Add all the fields to a combo box and highlight the current value
 141  */
 142 static void SERIALUI_AddConfItems(HWND hDlg, DWORD id, LPCPARAM2STR table, DWORD dwVal)
 143 {
 144     unsigned int i;
 145     int n;
 146     HWND hControl = GetDlgItem(hDlg,id);
 147
 148     if(!hControl)
 149         return;
 150
 151     for(i=0; i<table->dwSize; i++)
 152     {
 153         n = SendMessageA(hControl, CB_ADDSTRING, 0L, (LPARAM)table->data[i].name);
 154         if(dwVal == table->data[i].val)
 155         {
 156             SendMessageA(hControl, CB_SETCURSEL, n, 0);
 157         }
 158     }
 159 }
 160
 161 /*
 162  * Get the current selection of the given combo box and set a DCB field to
 163  * the value matching that selection.
 164  */
 165 static BOOL SERIALUI_GetConfItems(HWND hDlg, DWORD id, LPCPARAM2STR table, LPDWORD lpdwVal)
 166 {
 167     DWORD i;
 168     CHAR lpEntry[20];
 169     HWND hControl = GetDlgItem(hDlg,id);
 170
 171     if( (!hControl) || (!lpdwVal))
 172     {
 173         TRACE("Couldn't get window handle for item %lx\n",id);
 174         return FALSE;
 175     }
 176
 177     if(!GetWindowTextA(hControl, &lpEntry[0], sizeof(lpEntry)))
 178     {
 179         TRACE("Couldn't get window text for item %lx\n",id);
 180         return FALSE;
 181     }
 182     /* TRACE("%ld contains %s\n",id, lpEntry); */
 183
 184     for(i=0; i<table->dwSize; i++)
 185     {
 186         if(!lstrcmpA(table->data[i].name,lpEntry))
 187         {
 188             *lpdwVal = table->data[i].val;
 189             return TRUE;
 190         }
 191     }
 192
 193     return FALSE;
 194 }
 195
 196 /*
 197  * Both the enumerated values CBR_XXXX and integer baud rates are valid
 198  * dcb.BaudRate. This code is to convert back and forth between CBR_ style
 199  * and integers. The dialog box uses integer values.
 200  */
 201 static const DWORD SERIALUI_BaudConvertTable[] =  {
 202   CBR_110, 110, CBR_300, 300, CBR_600, 600, CBR_1200, 1200,
 203   CBR_2400, 2400, CBR_4800, 4800, CBR_9600, 9600, CBR_14400, 14400,
 204   CBR_19200, 19200, CBR_38400, 38400, CBR_56000, 56000, CBR_57600, 57600,
 205   CBR_115200, 115200, CBR_128000, 128000, CBR_256000, 256000
 206 };
 207
 208 static BOOL SERIALUI_MakeBaudDword(LPDWORD lpdwBaudRate)
 209 {
 210     unsigned int i;
 211
 212     for(i=0; i<ARRAY_SIZE(SERIALUI_BaudConvertTable); i+=2)
 213     {
 214         if(*lpdwBaudRate == SERIALUI_BaudConvertTable[i])
 215         {
 216             *lpdwBaudRate = SERIALUI_BaudConvertTable[i+1];
 217             return TRUE;
 218         }
 219     }
 220     return FALSE;
 221 }
 222
 223 static BOOL SERIALUI_MakeBaudEnum(LPDWORD lpdwBaudRate)
 224 {
 225     unsigned int i;
 226
 227     for(i=0; i<ARRAY_SIZE(SERIALUI_BaudConvertTable); i+=2)
 228     {
 229         if(*lpdwBaudRate == SERIALUI_BaudConvertTable[i+1])
 230         {
 231             *lpdwBaudRate = SERIALUI_BaudConvertTable[i];
 232             return TRUE;
 233         }
 234     }
 235     return FALSE;
 236 }
 237
 238 typedef struct tagSERIALUI_DialogInfo
 239 {
 240     LPCWSTR lpszDevice;
 241     LPCOMMCONFIG lpCommConfig;
 242     BOOL bConvert; /* baud rate was converted to a DWORD */
 243     DWORD dwFlowControl; /* old flow control */
 244 } SERIALUI_DialogInfo;
 245
 246 static void SERIALUI_DCBToDialogInfo(HWND hDlg, SERIALUI_DialogInfo *info)
 247 {
 248     DWORD dwBaudRate, dwStopBits, dwParity, dwByteSize, dwFlowControl;
 249     LPDCB lpdcb = &info->lpCommConfig->dcb;
 250
 251     /* pass integer pointers to SERIALUI_ dialog config fns */
 252     dwBaudRate    = lpdcb->BaudRate;
 253     dwStopBits    = lpdcb->StopBits;
 254     dwParity      = lpdcb->Parity;
 255     dwByteSize    = lpdcb->ByteSize;
 256
 257     /* map flow control state, if it looks normal */
 258     if((lpdcb->fRtsControl == RTS_CONTROL_HANDSHAKE) ||
 259        (lpdcb->fOutxCtsFlow)) {
 260         dwFlowControl = 1;
 261     } else if(lpdcb->fOutX || lpdcb->fInX) {
 262         dwFlowControl = 2;
 263     } else {
 264         dwFlowControl = 0;
 265     }
 266
 267     info->bConvert = SERIALUI_MakeBaudDword(&dwBaudRate);
 268
 269     SERIALUI_AddConfItems( hDlg, IDC_BAUD, &SERIALUI_Baud2Str ,dwBaudRate);
 270     SERIALUI_AddConfItems( hDlg, IDC_STOP, &SERIALUI_Stop2Str ,dwStopBits);
 271     SERIALUI_AddConfItems( hDlg, IDC_PARITY, &SERIALUI_Parity2Str ,dwParity);
 272     SERIALUI_AddConfItems( hDlg, IDC_DATA, &SERIALUI_Data2Str ,dwByteSize);
 273     SERIALUI_AddConfItems( hDlg, IDC_FLOW, &SERIALUI_Flow2Str, dwFlowControl );
 274
 275     info->dwFlowControl = dwFlowControl;
 276 }
 277
 278 static void SERIALUI_DialogInfoToDCB(HWND hDlg, SERIALUI_DialogInfo *info)
 279 {
 280     DWORD dwBaudRate, dwStopBits, dwParity, dwByteSize, dwFlowControl;
 281     LPDCB lpdcb = &info->lpCommConfig->dcb;
 282
 283     SERIALUI_GetConfItems( hDlg, IDC_BAUD, &SERIALUI_Baud2Str, &dwBaudRate);
 284     SERIALUI_GetConfItems( hDlg, IDC_STOP, &SERIALUI_Stop2Str, &dwStopBits);
 285     SERIALUI_GetConfItems( hDlg, IDC_PARITY, &SERIALUI_Parity2Str, &dwParity);
 286     SERIALUI_GetConfItems( hDlg, IDC_DATA, &SERIALUI_Data2Str, &dwByteSize);
 287     SERIALUI_GetConfItems( hDlg, IDC_FLOW, &SERIALUI_Flow2Str, &dwFlowControl );
 288
 289     TRACE("baud=%ld stop=%ld parity=%ld data=%ld flow=%ld\n",
 290           dwBaudRate, dwStopBits, dwParity, dwByteSize, dwFlowControl);
 291
 292     lpdcb->BaudRate = dwBaudRate;
 293     lpdcb->StopBits = dwStopBits;
 294     lpdcb->Parity   = dwParity;
 295     lpdcb->ByteSize = dwByteSize;
 296
 297     /* try not to change flow control if the user didn't change it */
 298     if(info->dwFlowControl != dwFlowControl)
 299     {
 300         switch(dwFlowControl)
 301         {
 302         case 0:
 303             lpdcb->fOutxCtsFlow = FALSE;
 304             lpdcb->fOutxDsrFlow = FALSE;
 305             lpdcb->fDtrControl  = DTR_CONTROL_DISABLE;
 306             lpdcb->fOutX        = FALSE;
 307             lpdcb->fInX         = FALSE;
 308             lpdcb->fRtsControl  = RTS_CONTROL_DISABLE;
 309             break;
 310         case 1: /* CTS/RTS */
 311             lpdcb->fOutxCtsFlow = TRUE;
 312             lpdcb->fOutxDsrFlow = FALSE;
 313             lpdcb->fDtrControl  = DTR_CONTROL_DISABLE;
 314             lpdcb->fOutX        = FALSE;
 315             lpdcb->fInX         = FALSE;
 316             lpdcb->fRtsControl  = RTS_CONTROL_HANDSHAKE;
 317             break;
 318         case 2:
 319             lpdcb->fOutxCtsFlow = FALSE;
 320             lpdcb->fOutxDsrFlow = FALSE;
 321             lpdcb->fDtrControl  = DTR_CONTROL_DISABLE;
 322             lpdcb->fOutX        = TRUE;
 323             lpdcb->fInX         = TRUE;
 324             lpdcb->fRtsControl  = RTS_CONTROL_DISABLE;
 325             break;
 326         }
 327     }
 328
 329     if(info->bConvert)
 330         SERIALUI_MakeBaudEnum(&lpdcb->BaudRate);
 331 }
 332
 333 /***********************************************************************
 334  * SERIALUI_ConfigDialogProc
 335  *
 336  * Shows a dialog for configuring a COMM port
 337  */
 338 static INT_PTR CALLBACK SERIALUI_ConfigDialogProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
 339 {
 340     WCHAR szTitle[128], format[40];
 341     SERIALUI_DialogInfo *info;
 342
 343     switch (uMsg)
 344     {
 345     case WM_INITDIALOG:
 346         info = (SERIALUI_DialogInfo*) lParam;
 347         if(!info)
 348             return FALSE;
 349         SetWindowLongPtrW(hWnd, DWLP_USER, lParam);
 350         GetWindowTextW(hWnd, format, ARRAY_SIZE(format));
 351         swprintf(szTitle, ARRAY_SIZE(szTitle), format, info->lpszDevice);
 352         SetWindowTextW(hWnd, szTitle);
 353         SERIALUI_DCBToDialogInfo(hWnd, info);
 354         return TRUE;
 355
 356     case WM_COMMAND:
 357     {
 358         WORD wID = LOWORD(wParam);
 359
 360         info = (SERIALUI_DialogInfo *) GetWindowLongPtrW(hWnd, DWLP_USER);
 361         if(!info)
 362             EndDialog(hWnd,0);
 363         switch (wID)
 364         {
 365         case IDOK:
 366             SERIALUI_DialogInfoToDCB(hWnd,info);
 367             EndDialog(hWnd, ERROR_SUCCESS);
 368             return TRUE;
 369         case IDCANCEL:
 370             EndDialog(hWnd, ERROR_CANCELLED);
 371             return TRUE;
 372 /* test code for Get/SetDefaultCommConfig begins */
 373         case ID_GETDEFAULT:
 374             {
 375                 DWORD r,dwConfSize = sizeof (COMMCONFIG);
 376                 r = GetDefaultCommConfigW(info->lpszDevice,
 377                           info->lpCommConfig, &dwConfSize);
 378                 if(!r)
 379                     MessageBoxA(hWnd,"Failed","GetDefaultCommConfig",MB_OK);
 380             }
 381             SERIALUI_DCBToDialogInfo(hWnd, info);
 382             break;
 383         case ID_SETDEFAULT:
 384             {
 385                 DWORD r;
 386                 SERIALUI_DialogInfoToDCB(hWnd,info);
 387                 r = SetDefaultCommConfigW(info->lpszDevice,
 388                           info->lpCommConfig, sizeof (COMMCONFIG));
 389                 if(!r)
 390                     MessageBoxA(hWnd,"Failed","GetDefaultCommConfig",MB_OK);
 391             }
 392             break;
 393 /* test code for Get/SetDefaultCommConfig ends */
 394         }
 395     }
 396     default:
 397         return FALSE;
 398     }
 399 }
 400
 401 static LPWSTR SERIALUI_strdup( LPCSTR str )
 402 {
 403     DWORD len;
 404     LPWSTR strW;
 405
 406     if (!str)
 407         return NULL;
 408     len = MultiByteToWideChar( CP_ACP, 0, str, -1, NULL, 0 );
 409     strW = HeapAlloc( GetProcessHeap(), 0, len*sizeof(WCHAR) );
 410     MultiByteToWideChar( CP_ACP, 0, str, -1, strW, len );
 411     return strW;
 412 }
 413
 414 static VOID SERIALUI_strfree( LPWSTR strW )
 415 {
 416     HeapFree( GetProcessHeap(), 0, strW );
 417 }
 418
 419 /***********************************************************************
 420  * drvCommConfigDialogW (SERIALUI.@)
 421  *
 422  * Show a dialog for configuring a Serial Port.
 423  *
 424  */
 425 DWORD WINAPI drvCommConfigDialogW(LPCWSTR lpszName, HWND hWndParent, LPCOMMCONFIG lpCommConfig)
 426 {
 427     SERIALUI_DialogInfo info;
 428     INT res;
 429
 430     info.lpCommConfig  = lpCommConfig;
 431     info.lpszDevice    = lpszName;
 432     info.bConvert      = FALSE;
 433     info.dwFlowControl = 0;
 434
 435     if ((!lpCommConfig) || (!lpszName))
 436         return ERROR_INVALID_PARAMETER;
 437
 438     if (lpCommConfig->dwSize < sizeof(COMMCONFIG))
 439         return ERROR_INSUFFICIENT_BUFFER;
 440
 441     if (!lpszName[0])
 442         return ERROR_BADKEY;
 443
 444     res = DialogBoxParamW( SERIALUI_hModule,
 445                            MAKEINTRESOURCEW(IDD_SERIALUICONFIG),
 446                            hWndParent,
 447                            SERIALUI_ConfigDialogProc,
 448                            (LPARAM)&info);
 449
 450     return (res == -1) ? GetLastError() : res ;
 451 }
 452
 453 /***********************************************************************
 454  * drvCommConfigDialogA (SERIALUI.@)
 455  */
 456 DWORD WINAPI drvCommConfigDialogA(LPCSTR lpszName, HWND hWndParent, LPCOMMCONFIG lpCommConfig)
 457 {
 458     LPWSTR strW = SERIALUI_strdup( lpszName );
 459     DWORD r = drvCommConfigDialogW( strW, hWndParent, lpCommConfig );
 460     SERIALUI_strfree( strW );
 461     return r;
 462 }
 463
 464 static const WCHAR lpszCommKey[] = L"System\\CurrentControlSet\\Services\\Class\\Ports";
 465
 466 /***********************************************************************
 467  * drvSetDefaultCommConfigW (SERIALUI.@)
 468  *
 469  * Used by Win98 KERNEL to set the default config for a COMM port
 470  * FIXME: uses the wrong registry key... should use a digit, not
 471  *        the comm port name.
 472  */
 473 BOOL WINAPI drvSetDefaultCommConfigW(
 474         LPCWSTR lpszDevice, LPCOMMCONFIG lpCommConfig, DWORD dwSize)
 475 {
 476     HKEY hKeyReg=0, hKeyPort=0;
 477     WCHAR szKeyName[100];
 478     DWORD r,dwDCBSize;
 479
 480     TRACE("%p %p %lx\n",lpszDevice,lpCommConfig,dwSize);
 481
 482     if(!lpCommConfig)
 483         return FALSE;
 484
 485     if(dwSize < sizeof (COMMCONFIG))
 486         return FALSE;
 487
 488     r = RegConnectRegistryW(NULL, HKEY_LOCAL_MACHINE, &hKeyReg);
 489     if(r != ERROR_SUCCESS)
 490         return FALSE;
 491
 492     swprintf(szKeyName, ARRAY_SIZE(szKeyName), L"%s\\%s", lpszCommKey, lpszDevice);
 493     r = RegCreateKeyW(hKeyReg, szKeyName, &hKeyPort);
 494     if(r == ERROR_SUCCESS)
 495     {
 496         dwDCBSize = sizeof (DCB);
 497         r = RegSetValueExW(hKeyPort, L"DCB", 0, REG_BINARY, (BYTE *)&lpCommConfig->dcb, dwDCBSize);
 498         TRACE("write key r=%ld\n",r);
 499         RegCloseKey(hKeyPort);
 500     }
 501
 502     RegCloseKey(hKeyReg);
 503
 504     return (r==ERROR_SUCCESS);
 505 }
 506
 507 /***********************************************************************
 508  * drvSetDefaultCommConfigA (SERIALUI.@)
 509  */
 510 BOOL WINAPI drvSetDefaultCommConfigA(
 511         LPCSTR lpszDevice, LPCOMMCONFIG lpCommConfig, DWORD dwSize)
 512 {
 513     LPWSTR strW = SERIALUI_strdup( lpszDevice );
 514     BOOL r = drvSetDefaultCommConfigW( strW, lpCommConfig, dwSize );
 515     SERIALUI_strfree( strW );
 516     return r;
 517 }
 518
 519 /***********************************************************************
 520  * drvGetDefaultCommConfigW (SERIALUI.@)
 521  *
 522  * Used by Win9x KERNEL to get the default config for a COMM port
 523  * FIXME: uses the wrong registry key... should use a digit, not
 524  *        the comm port name.
 525  */
 526 DWORD WINAPI drvGetDefaultCommConfigW(
 527         LPCWSTR lpszDevice, LPCOMMCONFIG lpCommConfig, LPDWORD lpdwSize)
 528 {
 529     HKEY hKeyReg, hKeyPort;
 530     WCHAR szKeyName[100];
 531     DWORD r,dwSize,dwType;
 532
 533     TRACE("(%s, %p, %p) *lpdwSize: %lu\n", debugstr_w(lpszDevice), lpCommConfig, lpdwSize, lpdwSize ? *lpdwSize : 0);
 534
 535     if ((!lpszDevice) || (!lpCommConfig) || (!lpdwSize)) {
 536         return ERROR_INVALID_PARAMETER;
 537     }
 538
 539     if (*lpdwSize < sizeof (COMMCONFIG)) {
 540         *lpdwSize = sizeof (COMMCONFIG);
 541         return ERROR_INSUFFICIENT_BUFFER;
 542     }
 543
 544     /* only "com1" - "com9" is allowed */
 545     r = ARRAY_SIZE(L"com");
 546     lstrcpynW(szKeyName, lpszDevice, r);    /* simulate a lstrcmpnW */
 547     r--;
 548
 549     if (lstrcmpiW(szKeyName, L"com") ||
 550         (lpszDevice[r] < '1') || (lpszDevice[r] > '9') || lpszDevice[r+1]) {
 551         return ERROR_BADKEY;
 552     }
 553
 554     *lpdwSize = sizeof (COMMCONFIG);
 555     memset(lpCommConfig, 0 , sizeof (COMMCONFIG));
 556     lpCommConfig->dwSize = sizeof (COMMCONFIG);
 557     lpCommConfig->wVersion = 1;
 558     lpCommConfig->dwProviderSubType = PST_RS232;
 559
 560     r = RegConnectRegistryW(NULL, HKEY_LOCAL_MACHINE, &hKeyReg);
 561     if(r != ERROR_SUCCESS) return r;
 562
 563     swprintf(szKeyName, ARRAY_SIZE(szKeyName), L"%s\\%s", lpszCommKey, lpszDevice);
 564     r = RegOpenKeyW(hKeyReg, szKeyName, &hKeyPort);
 565     if(r == ERROR_SUCCESS)
 566     {
 567         dwSize = sizeof (DCB);
 568         dwType = 0;
 569         r = RegQueryValueExW(hKeyPort, L"DCB", NULL, &dwType, (BYTE *)&lpCommConfig->dcb, &dwSize);
 570
 571         RegCloseKey(hKeyPort);
 572         if ((r!=ERROR_SUCCESS) || (dwType != REG_BINARY) || (dwSize != sizeof(DCB))) {
 573             RegCloseKey(hKeyReg);
 574             return ERROR_INVALID_PARAMETER;
 575         }
 576
 577     }
 578     else
 579     {
 580         /* FIXME: default to a hardcoded commconfig */
 581         lpCommConfig->dcb.DCBlength = sizeof(DCB);
 582         lpCommConfig->dcb.BaudRate = 9600;
 583         lpCommConfig->dcb.fBinary = TRUE;
 584         lpCommConfig->dcb.fParity = FALSE;
 585         lpCommConfig->dcb.ByteSize = 8;
 586         lpCommConfig->dcb.Parity = NOPARITY;
 587         lpCommConfig->dcb.StopBits = ONESTOPBIT;
 588         return ERROR_SUCCESS;
 589     }
 590
 591     RegCloseKey(hKeyReg);
 592
 593     return r;
 594 }
 595
 596 /***********************************************************************
 597  * drvGetDefaultCommConfigA (SERIALUI.@)
 598  */
 599 DWORD WINAPI drvGetDefaultCommConfigA(
 600         LPCSTR lpszDevice, LPCOMMCONFIG lpCommConfig, LPDWORD lpdwSize)
 601 {
 602     LPWSTR strW = SERIALUI_strdup( lpszDevice );
 603     DWORD r = drvGetDefaultCommConfigW( strW, lpCommConfig, lpdwSize );
 604     SERIALUI_strfree( strW );
 605     return r;
 606 }