git.oblomov.eu Git - wine/blob - dlls/shell32/shell.c

   1 /*
   2  *                              Shell Library Functions
   3  *
   4  *  1998 Marcus Meissner
   5  */
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <unistd.h>
   9 #include <ctype.h>
  10 #include "windef.h"
  11 #include "wingdi.h"
  12 #include "wine/winuser16.h"
  13 #include "wine/winbase16.h"
  14 #include "wine/shell16.h"
  15 #include "winerror.h"
  16 #include "heap.h"
  17 #include "ldt.h"
  18 #include "module.h"
  19 #include "neexe.h"
  20 #include "dlgs.h"
  21 #include "cursoricon.h"
  22 #include "shellapi.h"
  23 #include "shlobj.h"
  24 #include "debugtools.h"
  25 #include "winreg.h"
  26 #include "syslevel.h"
  27 #include "shlwapi.h"
  28
  29 DEFAULT_DEBUG_CHANNEL(shell);
  30 DECLARE_DEBUG_CHANNEL(exec);
  31
  32 /* .ICO file ICONDIR definitions */
  33
  34 #include "pshpack1.h"
  35
  36 typedef struct
  37 {
  38     BYTE        bWidth;          /* Width, in pixels, of the image      */
  39     BYTE        bHeight;         /* Height, in pixels, of the image     */
  40     BYTE        bColorCount;     /* Number of colors in image (0 if >=8bpp) */
  41     BYTE        bReserved;       /* Reserved ( must be 0)               */
  42     WORD        wPlanes;         /* Color Planes                        */
  43     WORD        wBitCount;       /* Bits per pixel                      */
  44     DWORD       dwBytesInRes;    /* How many bytes in this resource?    */
  45     DWORD       dwImageOffset;   /* Where in the file is this image?    */
  46 } icoICONDIRENTRY, *LPicoICONDIRENTRY;
  47
  48 typedef struct
  49 {
  50     WORD            idReserved;   /* Reserved (must be 0)               */
  51     WORD            idType;       /* Resource Type (1 for icons)        */
  52     WORD            idCount;      /* How many images?                   */
  53     icoICONDIRENTRY idEntries[1]; /* An entry for each image (idCount of 'em) */
  54 } icoICONDIR, *LPicoICONDIR;
  55
  56 #include "poppack.h"
  57
  58 typedef struct {     /* structure for dropped files */
  59  WORD     wSize;
  60  POINT16  ptMousePos;
  61  BOOL16   fInNonClientArea;
  62  /* memory block with filenames follows */
  63 } DROPFILESTRUCT16, *LPDROPFILESTRUCT16;
  64
  65 static const char*      lpstrMsgWndCreated = "OTHERWINDOWCREATED";
  66 static const char*      lpstrMsgWndDestroyed = "OTHERWINDOWDESTROYED";
  67 static const char*      lpstrMsgShellActivate = "ACTIVATESHELLWINDOW";
  68
  69 static HWND16   SHELL_hWnd = 0;
  70 static HHOOK    SHELL_hHook = 0;
  71 static UINT16   uMsgWndCreated = 0;
  72 static UINT16   uMsgWndDestroyed = 0;
  73 static UINT16   uMsgShellActivate = 0;
  74 HINSTANCE16     SHELL_hInstance = 0;
  75 HINSTANCE SHELL_hInstance32;
  76 static int SHELL_Attach = 0;
  77
  78 /***********************************************************************
  79  * SHELL_DllEntryPoint [SHELL.entry]
  80  *
  81  * Initialization code for shell.dll. Automatically loads the
  82  * 32-bit shell32.dll to allow thunking up to 32-bit code.
  83  *
  84  * RETURNS:
  85  */
  86 BOOL WINAPI SHELL_DllEntryPoint(DWORD Reason, HINSTANCE16 hInst,
  87                                 WORD ds, WORD HeapSize, DWORD res1, WORD res2)
  88 {
  89     TRACE("(%08lx, %04x, %04x, %04x, %08lx, %04x)\n",
  90           Reason, hInst, ds, HeapSize, res1, res2);
  91
  92     switch(Reason)
  93     {
  94     case DLL_PROCESS_ATTACH:
  95         SHELL_Attach++;
  96         if (SHELL_hInstance)
  97         {
  98             ERR("shell.dll instantiated twice!\n");
  99             /*
 100              * We should return FALSE here, but that will break
 101              * most apps that use CreateProcess because we do
 102              * not yet support seperate address-spaces.
 103              */
 104             return TRUE;
 105         }
 106
 107         SHELL_hInstance = hInst;
 108         if(!SHELL_hInstance32)
 109         {
 110             if(!(SHELL_hInstance32 = LoadLibraryA("shell32.dll")))
 111             {
 112                 ERR("Could not load sibling shell32.dll\n");
 113                 return FALSE;
 114             }
 115         }
 116         break;
 117
 118     case DLL_PROCESS_DETACH:
 119         if(!--SHELL_Attach)
 120         {
 121             SHELL_hInstance = 0;
 122             if(SHELL_hInstance32)
 123                 FreeLibrary(SHELL_hInstance32);
 124         }
 125         break;
 126     }
 127     return TRUE;
 128 }
 129
 130 /*************************************************************************
 131  *                              DragAcceptFiles16               [SHELL.9]
 132  */
 133 void WINAPI DragAcceptFiles16(HWND16 hWnd, BOOL16 b)
 134 {
 135   DragAcceptFiles(hWnd, b);
 136 }
 137
 138 /*************************************************************************
 139  *                              DragQueryFile16         [SHELL.11]
 140  */
 141 UINT16 WINAPI DragQueryFile16(
 142         HDROP16 hDrop,
 143         WORD wFile,
 144         LPSTR lpszFile,
 145         WORD wLength)
 146 {
 147         LPSTR lpDrop;
 148         UINT i = 0;
 149         LPDROPFILESTRUCT16 lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 150
 151         TRACE("(%04x, %x, %p, %u)\n", hDrop,wFile,lpszFile,wLength);
 152
 153         if(!lpDropFileStruct) goto end;
 154
 155         lpDrop = (LPSTR) lpDropFileStruct + lpDropFileStruct->wSize;
 156         wFile = (wFile==0xffff) ? 0xffffffff : wFile;
 157
 158         while (i++ < wFile)
 159         {
 160           while (*lpDrop++); /* skip filename */
 161           if (!*lpDrop)
 162           {
 163             i = (wFile == 0xFFFFFFFF) ? i : 0;
 164             goto end;
 165           }
 166         }
 167
 168         i = strlen(lpDrop);
 169         i++;
 170         if (!lpszFile ) goto end;   /* needed buffer size */
 171         i = (wLength > i) ? i : wLength;
 172         lstrcpynA (lpszFile,  lpDrop,  i);
 173 end:
 174         GlobalUnlock16(hDrop);
 175         return i;
 176 }
 177
 178 /*************************************************************************
 179  *                              DragFinish16            [SHELL.12]
 180  */
 181 void WINAPI DragFinish16(HDROP16 h)
 182 {
 183     TRACE("\n");
 184     GlobalFree16((HGLOBAL16)h);
 185 }
 186
 187
 188 /*************************************************************************
 189  *                              DragQueryPoint16                [SHELL.13]
 190  */
 191 BOOL16 WINAPI DragQueryPoint16(HDROP16 hDrop, POINT16 *p)
 192 {
 193   LPDROPFILESTRUCT16 lpDropFileStruct;
 194   BOOL16           bRet;
 195   TRACE("\n");
 196   lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 197
 198   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT16));
 199   bRet = lpDropFileStruct->fInNonClientArea;
 200
 201   GlobalUnlock16(hDrop);
 202   return bRet;
 203 }
 204
 205 /*************************************************************************
 206  *      SHELL_FindExecutable [Internal]
 207  *
 208  * Utility for code sharing between FindExecutable and ShellExecute
 209  */
 210 HINSTANCE SHELL_FindExecutable( LPCSTR lpFile,
 211                                          LPCSTR lpOperation,
 212                                          LPSTR lpResult)
 213 { char *extension = NULL; /* pointer to file extension */
 214     char tmpext[5];         /* local copy to mung as we please */
 215     char filetype[256];     /* registry name for this filetype */
 216     LONG filetypelen=256;   /* length of above */
 217     char command[256];      /* command from registry */
 218     LONG commandlen=256;    /* This is the most DOS can handle :) */
 219     char buffer[256];       /* Used to GetProfileString */
 220     HINSTANCE retval=31;  /* default - 'No association was found' */
 221     char *tok;              /* token pointer */
 222     int i;                  /* random counter */
 223     char xlpFile[256] = ""; /* result of SearchPath */
 224
 225   TRACE("%s\n", (lpFile != NULL?lpFile:"-") );
 226
 227     lpResult[0]='\0'; /* Start off with an empty return string */
 228
 229     /* trap NULL parameters on entry */
 230     if (( lpFile == NULL ) || ( lpResult == NULL ) || ( lpOperation == NULL ))
 231   { WARN_(exec)("(lpFile=%s,lpResult=%s,lpOperation=%s): NULL parameter\n",
 232            lpFile, lpOperation, lpResult);
 233         return 2; /* File not found. Close enough, I guess. */
 234     }
 235
 236     if (SearchPathA( NULL, lpFile,".exe",sizeof(xlpFile),xlpFile,NULL))
 237   { TRACE("SearchPathA returned non-zero\n");
 238         lpFile = xlpFile;
 239     }
 240
 241     /* First thing we need is the file's extension */
 242     extension = strrchr( xlpFile, '.' ); /* Assume last "." is the one; */
 243                                         /* File->Run in progman uses */
 244                                         /* .\FILE.EXE :( */
 245   TRACE("xlpFile=%s,extension=%s\n", xlpFile, extension);
 246
 247     if ((extension == NULL) || (extension == &xlpFile[strlen(xlpFile)]))
 248   { WARN("Returning 31 - No association\n");
 249         return 31; /* no association */
 250     }
 251
 252     /* Make local copy & lowercase it for reg & 'programs=' lookup */
 253     lstrcpynA( tmpext, extension, 5 );
 254     CharLowerA( tmpext );
 255   TRACE("%s file\n", tmpext);
 256
 257     /* Three places to check: */
 258     /* 1. win.ini, [windows], programs (NB no leading '.') */
 259     /* 2. Registry, HKEY_CLASS_ROOT\<filetype>\shell\open\command */
 260     /* 3. win.ini, [extensions], extension (NB no leading '.' */
 261     /* All I know of the order is that registry is checked before */
 262     /* extensions; however, it'd make sense to check the programs */
 263     /* section first, so that's what happens here. */
 264
 265     /* See if it's a program - if GetProfileString fails, we skip this
 266      * section. Actually, if GetProfileString fails, we've probably
 267      * got a lot more to worry about than running a program... */
 268     if ( GetProfileStringA("windows", "programs", "exe pif bat com",
 269                                                   buffer, sizeof(buffer)) > 0 )
 270   { for (i=0;i<strlen(buffer); i++) buffer[i]=tolower(buffer[i]);
 271
 272                 tok = strtok(buffer, " \t"); /* ? */
 273                 while( tok!= NULL)
 274                   {
 275                         if (strcmp(tok, &tmpext[1])==0) /* have to skip the leading "." */
 276                           {
 277                                 strcpy(lpResult, xlpFile);
 278                                 /* Need to perhaps check that the file has a path
 279                                  * attached */
 280         TRACE("found %s\n", lpResult);
 281         return 33;
 282
 283                 /* Greater than 32 to indicate success FIXME According to the
 284                  * docs, I should be returning a handle for the
 285                  * executable. Does this mean I'm supposed to open the
 286                  * executable file or something? More RTFM, I guess... */
 287                           }
 288                         tok=strtok(NULL, " \t");
 289                   }
 290           }
 291
 292     /* Check registry */
 293     if (RegQueryValue16( HKEY_CLASSES_ROOT, tmpext, filetype,
 294                          &filetypelen ) == ERROR_SUCCESS )
 295     {
 296         filetype[filetypelen]='\0';
 297         TRACE("File type: %s\n", filetype);
 298
 299         /* Looking for ...buffer\shell\lpOperation\command */
 300         strcat( filetype, "\\shell\\" );
 301         strcat( filetype, lpOperation );
 302         strcat( filetype, "\\command" );
 303
 304         if (RegQueryValue16( HKEY_CLASSES_ROOT, filetype, command,
 305                              &commandlen ) == ERROR_SUCCESS )
 306         {
 307             LPSTR tmp;
 308             char param[256];
 309             LONG paramlen = 256;
 310
 311
 312             /* Get the parameters needed by the application
 313                from the associated ddeexec key */
 314             tmp = strstr(filetype,"command");
 315             tmp[0] = '\0';
 316             strcat(filetype,"ddeexec");
 317
 318             if(RegQueryValue16( HKEY_CLASSES_ROOT, filetype, param,&paramlen ) == ERROR_SUCCESS)
 319             {
 320               strcat(command," ");
 321               strcat(command,param);
 322               commandlen += paramlen;
 323             }
 324
 325             /* Is there a replace() function anywhere? */
 326             command[commandlen]='\0';
 327             strcpy( lpResult, command );
 328             tok=strstr( lpResult, "%1" );
 329             if (tok != NULL)
 330             {
 331                 tok[0]='\0'; /* truncate string at the percent */
 332                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 333                 tok=strstr( command, "%1" );
 334                 if ((tok!=NULL) && (strlen(tok)>2))
 335                 {
 336                     strcat( lpResult, &tok[2] );
 337                 }
 338             }
 339             retval=33; /* FIXME see above */
 340         }
 341     }
 342     else /* Check win.ini */
 343     {
 344         /* Toss the leading dot */
 345         extension++;
 346         if ( GetProfileStringA( "extensions", extension, "", command,
 347                                   sizeof(command)) > 0)
 348           {
 349                 if (strlen(command)!=0)
 350                   {
 351                         strcpy( lpResult, command );
 352                         tok=strstr( lpResult, "^" ); /* should be ^.extension? */
 353                         if (tok != NULL)
 354                           {
 355                                 tok[0]='\0';
 356                                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 357                                 tok=strstr( command, "^" ); /* see above */
 358                                 if ((tok != NULL) && (strlen(tok)>5))
 359                                   {
 360                                         strcat( lpResult, &tok[5]);
 361                                   }
 362                           }
 363                         retval=33; /* FIXME - see above */
 364                   }
 365           }
 366         }
 367
 368     TRACE("returning %s\n", lpResult);
 369     return retval;
 370 }
 371
 372 /*************************************************************************
 373  *                              ShellExecute16          [SHELL.20]
 374  */
 375 HINSTANCE16 WINAPI ShellExecute16( HWND16 hWnd, LPCSTR lpOperation,
 376                                    LPCSTR lpFile, LPCSTR lpParameters,
 377                                    LPCSTR lpDirectory, INT16 iShowCmd )
 378 {   HINSTANCE16 retval=31;
 379     char old_dir[1024];
 380     char cmd[1024] = "";
 381
 382     TRACE("(%04x,'%s','%s','%s','%s',%x)\n",
 383                 hWnd, lpOperation ? lpOperation:"<null>", lpFile ? lpFile:"<null>",
 384                 lpParameters ? lpParameters : "<null>",
 385                 lpDirectory ? lpDirectory : "<null>", iShowCmd);
 386
 387     if (lpFile==NULL) return 0; /* should not happen */
 388     if (lpOperation==NULL) /* default is open */
 389       lpOperation="open";
 390
 391     if (lpDirectory)
 392     { GetCurrentDirectoryA( sizeof(old_dir), old_dir );
 393         SetCurrentDirectoryA( lpDirectory );
 394     }
 395
 396     /* First try to execute lpFile with lpParameters directly */
 397     strcpy(cmd,lpFile);
 398     strcat(cmd,lpParameters ? lpParameters : "");
 399
 400     retval = WinExec16( cmd, iShowCmd );
 401
 402     /* Unable to execute lpFile directly
 403        Check if we can match an application to lpFile */
 404     if(retval < 32)
 405     {
 406       cmd[0] = '\0';
 407       retval = SHELL_FindExecutable( lpFile, lpOperation, cmd );
 408
 409       if (retval > 32)  /* Found */
 410       {
 411         if (lpParameters)
 412         {
 413             strcat(cmd," ");
 414             strcat(cmd,lpParameters);
 415         }
 416         retval = WinExec16( cmd, iShowCmd );
 417       }
 418       else if(PathIsURLA((LPSTR)lpFile))    /* File not found, check for URL */
 419       {
 420         char lpstrProtocol[256];
 421         LONG cmdlen = 512;
 422         LPSTR lpstrRes;
 423         INT iSize;
 424
 425         lpstrRes = strchr(lpFile,':');
 426         iSize = lpstrRes - lpFile;
 427
 428         /* Looking for ...protocol\shell\lpOperation\command */
 429         strncpy(lpstrProtocol,lpFile,iSize);
 430         lpstrProtocol[iSize]='\0';
 431         strcat( lpstrProtocol, "\\shell\\" );
 432         strcat( lpstrProtocol, lpOperation );
 433         strcat( lpstrProtocol, "\\command" );
 434
 435         /* Remove File Protocol from lpFile */
 436         /* In the case file://path/file     */
 437         if(!strncasecmp(lpFile,"file",iSize))
 438         {
 439           lpFile += iSize;
 440           while(*lpFile == ':') lpFile++;
 441         }
 442
 443
 444         /* Get the application for the protocol and execute it */
 445         if (RegQueryValue16( HKEY_CLASSES_ROOT, lpstrProtocol, cmd,
 446                              &cmdlen ) == ERROR_SUCCESS )
 447         {
 448             LPSTR tok;
 449             LPSTR tmp;
 450             char param[256] = "";
 451             LONG paramlen = 256;
 452
 453             /* Get the parameters needed by the application
 454                from the associated ddeexec key */
 455             tmp = strstr(lpstrProtocol,"command");
 456             tmp[0] = '\0';
 457             strcat(lpstrProtocol,"ddeexec");
 458
 459             if(RegQueryValue16( HKEY_CLASSES_ROOT, lpstrProtocol, param,&paramlen ) == ERROR_SUCCESS)
 460             {
 461               strcat(cmd," ");
 462               strcat(cmd,param);
 463               cmdlen += paramlen;
 464             }
 465
 466             /* Is there a replace() function anywhere? */
 467             cmd[cmdlen]='\0';
 468
 469             tok=strstr( cmd, "%1" );
 470             if (tok != NULL)
 471             {
 472                 tok[0]='\0'; /* truncate string at the percent */
 473                 strcat( cmd, lpFile ); /* what if no dir in xlpFile? */
 474                 tok=strstr( cmd, "%1" );
 475                 if ((tok!=NULL) && (strlen(tok)>2))
 476                 {
 477                     strcat( cmd, &tok[2] );
 478                 }
 479             }
 480
 481             retval = WinExec16( cmd, iShowCmd );
 482         }
 483       }
 484     /* Check if file specified is in the form www.??????.*** */
 485       else if(!strncasecmp(lpFile,"www",3))
 486       {
 487         /* if so, append lpFile http:// and call ShellExecute */
 488         char lpstrTmpFile[256] = "http://" ;
 489         strcat(lpstrTmpFile,lpFile);
 490         retval = ShellExecuteA(hWnd,lpOperation,lpstrTmpFile,NULL,NULL,0);
 491       }
 492     }
 493     if (lpDirectory)
 494       SetCurrentDirectoryA( old_dir );
 495     return retval;
 496 }
 497
 498 /*************************************************************************
 499  *             FindExecutable16   (SHELL.21)
 500  */
 501 HINSTANCE16 WINAPI FindExecutable16( LPCSTR lpFile, LPCSTR lpDirectory,
 502                                      LPSTR lpResult )
 503 { return (HINSTANCE16)FindExecutableA( lpFile, lpDirectory, lpResult );
 504 }
 505
 506
 507 /*************************************************************************
 508  *             AboutDlgProc16   (SHELL.33)
 509  */
 510 BOOL16 WINAPI AboutDlgProc16( HWND16 hWnd, UINT16 msg, WPARAM16 wParam,
 511                                LPARAM lParam )
 512 { return AboutDlgProc( hWnd, msg, wParam, lParam );
 513 }
 514
 515
 516 /*************************************************************************
 517  *             ShellAbout16   (SHELL.22)
 518  */
 519 BOOL16 WINAPI ShellAbout16( HWND16 hWnd, LPCSTR szApp, LPCSTR szOtherStuff,
 520                             HICON16 hIcon )
 521 { return ShellAboutA( hWnd, szApp, szOtherStuff, hIcon );
 522 }
 523
 524 /*************************************************************************
 525  *                              SHELL_GetResourceTable
 526  */
 527 static DWORD SHELL_GetResourceTable(HFILE hFile,LPBYTE *retptr)
 528 {       IMAGE_DOS_HEADER        mz_header;
 529         char                    magic[4];
 530         int                     size;
 531
 532         TRACE("\n");
 533
 534         *retptr = NULL;
 535         _llseek( hFile, 0, SEEK_SET );
 536         if ((_lread(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) || (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 537         { /* .ICO file ? */
 538           if (mz_header.e_cblp == 1)
 539           { /* ICONHEADER.idType, must be 1 */
 540             *retptr = (LPBYTE)-1;
 541             return 1;
 542           }
 543           else
 544             return 0; /* failed */
 545         }
 546         _llseek( hFile, mz_header.e_lfanew, SEEK_SET );
 547
 548         if (_lread( hFile, magic, sizeof(magic) ) != sizeof(magic))
 549           return 0;
 550
 551         _llseek( hFile, mz_header.e_lfanew, SEEK_SET);
 552
 553         if (*(DWORD*)magic  == IMAGE_NT_SIGNATURE)
 554           return IMAGE_NT_SIGNATURE;
 555
 556         if (*(WORD*)magic == IMAGE_OS2_SIGNATURE)
 557         { IMAGE_OS2_HEADER      ne_header;
 558           LPBYTE                pTypeInfo = (LPBYTE)-1;
 559
 560           if (_lread(hFile,&ne_header,sizeof(ne_header))!=sizeof(ne_header))
 561             return 0;
 562
 563           if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE)
 564             return 0;
 565
 566           size = ne_header.ne_restab - ne_header.ne_rsrctab;
 567
 568           if( size > sizeof(NE_TYPEINFO) )
 569           { pTypeInfo = (BYTE*)HeapAlloc( GetProcessHeap(), 0, size);
 570             if( pTypeInfo )
 571             { _llseek(hFile, mz_header.e_lfanew+ne_header.ne_rsrctab, SEEK_SET);
 572               if( _lread( hFile, (char*)pTypeInfo, size) != size )
 573               { HeapFree( GetProcessHeap(), 0, pTypeInfo);
 574                 pTypeInfo = NULL;
 575               }
 576             }
 577           }
 578           *retptr = pTypeInfo;
 579           return IMAGE_OS2_SIGNATURE;
 580         }
 581         return 0; /* failed */
 582 }
 583
 584 /*************************************************************************
 585  *                      SHELL_LoadResource
 586  */
 587 static HGLOBAL16 SHELL_LoadResource(HINSTANCE16 hInst, HFILE hFile, NE_NAMEINFO* pNInfo, WORD sizeShift)
 588 {       BYTE*  ptr;
 589         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, (DWORD)pNInfo->length << sizeShift);
 590
 591         TRACE("\n");
 592
 593         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 594         { _llseek( hFile, (DWORD)pNInfo->offset << sizeShift, SEEK_SET);
 595           _lread( hFile, (char*)ptr, pNInfo->length << sizeShift);
 596           return handle;
 597         }
 598         return 0;
 599 }
 600
 601 /*************************************************************************
 602  *                      ICO_LoadIcon
 603  */
 604 static HGLOBAL16 ICO_LoadIcon(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIRENTRY lpiIDE)
 605 {       BYTE*  ptr;
 606         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, lpiIDE->dwBytesInRes);
 607         TRACE("\n");
 608         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 609         { _llseek( hFile, lpiIDE->dwImageOffset, SEEK_SET);
 610           _lread( hFile, (char*)ptr, lpiIDE->dwBytesInRes);
 611           return handle;
 612         }
 613         return 0;
 614 }
 615
 616 /*************************************************************************
 617  *                      ICO_GetIconDirectory
 618  *
 619  *  Read .ico file and build phony ICONDIR struct for GetIconID
 620  */
 621 static HGLOBAL16 ICO_GetIconDirectory(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIR* lplpiID )
 622 { WORD    id[3];  /* idReserved, idType, idCount */
 623   LPicoICONDIR  lpiID;
 624   int           i;
 625
 626   TRACE("\n");
 627   _llseek( hFile, 0, SEEK_SET );
 628   if( _lread(hFile,(char*)id,sizeof(id)) != sizeof(id) ) return 0;
 629
 630   /* check .ICO header
 631    *
 632    * - see http://www.microsoft.com/win32dev/ui/icons.htm
 633    */
 634
 635   if( id[0] || id[1] != 1 || !id[2] ) return 0;
 636
 637   i = id[2]*sizeof(icoICONDIRENTRY) ;
 638
 639   lpiID = (LPicoICONDIR)HeapAlloc( GetProcessHeap(), 0, i + sizeof(id));
 640
 641   if( _lread(hFile,(char*)lpiID->idEntries,i) == i )
 642   { HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10,
 643                                      id[2]*sizeof(CURSORICONDIRENTRY) + sizeof(id) );
 644      if( handle )
 645     { CURSORICONDIR*     lpID = (CURSORICONDIR*)GlobalLock16( handle );
 646        lpID->idReserved = lpiID->idReserved = id[0];
 647        lpID->idType = lpiID->idType = id[1];
 648        lpID->idCount = lpiID->idCount = id[2];
 649        for( i=0; i < lpiID->idCount; i++ )
 650       { memcpy((void*)(lpID->idEntries + i),
 651                    (void*)(lpiID->idEntries + i), sizeof(CURSORICONDIRENTRY) - 2);
 652             lpID->idEntries[i].wResId = i;
 653          }
 654       *lplpiID = lpiID;
 655        return handle;
 656      }
 657   }
 658   /* fail */
 659
 660   HeapFree( GetProcessHeap(), 0, lpiID);
 661   return 0;
 662 }
 663
 664 /*************************************************************************
 665  *                      InternalExtractIcon             [SHELL.39]
 666  *
 667  * This abortion is called directly by Progman
 668  */
 669 HGLOBAL16 WINAPI InternalExtractIcon16(HINSTANCE16 hInstance,
 670                                      LPCSTR lpszExeFileName, UINT16 nIconIndex, WORD n )
 671 {       HGLOBAL16       hRet = 0;
 672         HGLOBAL16*      RetPtr = NULL;
 673         LPBYTE          pData;
 674         OFSTRUCT        ofs;
 675         DWORD           sig;
 676         HFILE           hFile = OpenFile( lpszExeFileName, &ofs, OF_READ );
 677         UINT16          iconDirCount = 0,iconCount = 0;
 678         LPBYTE          peimage;
 679         HANDLE  fmapping;
 680
 681         TRACE("(%04x,file %s,start %d,extract %d\n",
 682                        hInstance, lpszExeFileName, nIconIndex, n);
 683
 684         if( hFile == HFILE_ERROR || !n )
 685           return 0;
 686
 687         hRet = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON16)*n);
 688         RetPtr = (HICON16*)GlobalLock16(hRet);
 689
 690         *RetPtr = (n == 0xFFFF)? 0: 1;  /* error return values */
 691
 692         sig = SHELL_GetResourceTable(hFile,&pData);
 693
 694         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 695         { HICON16        hIcon = 0;
 696           NE_TYPEINFO* pTInfo = (NE_TYPEINFO*)(pData + 2);
 697           NE_NAMEINFO* pIconStorage = NULL;
 698           NE_NAMEINFO* pIconDir = NULL;
 699           LPicoICONDIR lpiID = NULL;
 700
 701           if( pData == (BYTE*)-1 )
 702           { hIcon = ICO_GetIconDirectory(hInstance, hFile, &lpiID);     /* check for .ICO file */
 703             if( hIcon )
 704             { iconDirCount = 1; iconCount = lpiID->idCount;
 705             }
 706           }
 707           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 708           { if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 709             { iconDirCount = pTInfo->count;
 710               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 711               TRACE("\tfound directory - %i icon families\n", iconDirCount);
 712             }
 713             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 714             { iconCount = pTInfo->count;
 715               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 716               TRACE("\ttotal icons - %i\n", iconCount);
 717             }
 718             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 719           }
 720
 721           /* load resources and create icons */
 722
 723           if( (pIconStorage && pIconDir) || lpiID )
 724           { if( nIconIndex == (UINT16)-1 )
 725             { RetPtr[0] = iconDirCount;
 726             }
 727             else if( nIconIndex < iconDirCount )
 728             { UINT16   i, icon;
 729               if( n > iconDirCount - nIconIndex )
 730                 n = iconDirCount - nIconIndex;
 731
 732               for( i = nIconIndex; i < nIconIndex + n; i++ )
 733               { /* .ICO files have only one icon directory */
 734
 735                 if( lpiID == NULL )
 736                   hIcon = SHELL_LoadResource( hInstance, hFile, pIconDir + i, *(WORD*)pData );
 737                 RetPtr[i-nIconIndex] = GetIconID16( hIcon, 3 );
 738                 GlobalFree16(hIcon);
 739               }
 740
 741               for( icon = nIconIndex; icon < nIconIndex + n; icon++ )
 742               { hIcon = 0;
 743                 if( lpiID )
 744                 { hIcon = ICO_LoadIcon( hInstance, hFile, lpiID->idEntries + RetPtr[icon-nIconIndex]);
 745                 }
 746                 else
 747                 { for( i = 0; i < iconCount; i++ )
 748                   { if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 749                     { hIcon = SHELL_LoadResource( hInstance, hFile, pIconStorage + i,*(WORD*)pData );
 750                     }
 751                   }
 752                 }
 753                 if( hIcon )
 754                 { RetPtr[icon-nIconIndex] = LoadIconHandler16( hIcon, TRUE );
 755                   FarSetOwner16( RetPtr[icon-nIconIndex], GetExePtr(hInstance) );
 756                 }
 757                 else
 758                 { RetPtr[icon-nIconIndex] = 0;
 759                 }
 760               }
 761             }
 762           }
 763           if( lpiID )
 764             HeapFree( GetProcessHeap(), 0, lpiID);
 765           else
 766             HeapFree( GetProcessHeap(), 0, pData);
 767         }
 768
 769         if( sig == IMAGE_NT_SIGNATURE)
 770         { LPBYTE                idata,igdata;
 771           PIMAGE_DOS_HEADER     dheader;
 772           PIMAGE_NT_HEADERS     pe_header;
 773           PIMAGE_SECTION_HEADER pe_sections;
 774           PIMAGE_RESOURCE_DIRECTORY     rootresdir,iconresdir,icongroupresdir;
 775           PIMAGE_RESOURCE_DATA_ENTRY    idataent,igdataent;
 776           int                   i,j;
 777           PIMAGE_RESOURCE_DIRECTORY_ENTRY       xresent;
 778           CURSORICONDIR         **cids;
 779
 780           fmapping = CreateFileMappingA(hFile,NULL,PAGE_READONLY|SEC_COMMIT,0,0,NULL);
 781           if (fmapping == 0)
 782           { /* FIXME, INVALID_HANDLE_VALUE? */
 783             WARN("failed to create filemap.\n");
 784             hRet = 0;
 785             goto end_2; /* failure */
 786           }
 787           peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0);
 788           if (!peimage)
 789           { WARN("failed to mmap filemap.\n");
 790             hRet = 0;
 791             goto end_2; /* failure */
 792           }
 793           dheader = (PIMAGE_DOS_HEADER)peimage;
 794
 795           /* it is a pe header, SHELL_GetResourceTable checked that */
 796           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);
 797
 798           /* probably makes problems with short PE headers... but I haven't seen
 799           * one yet...
 800           */
 801           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header));
 802           rootresdir = NULL;
 803
 804           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 805           { if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 806               continue;
 807             /* FIXME: doesn't work when the resources are not in a seperate section */
 808             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 809             { rootresdir = (PIMAGE_RESOURCE_DIRECTORY)((char*)peimage+pe_sections[i].PointerToRawData);
 810               break;
 811             }
 812           }
 813
 814           if (!rootresdir)
 815           { WARN("haven't found section for resource directory.\n");
 816             goto end_4; /* failure */
 817           }
 818
 819           icongroupresdir = GetResDirEntryW(rootresdir,RT_GROUP_ICONW, (DWORD)rootresdir,FALSE);
 820
 821           if (!icongroupresdir)
 822           { WARN("No Icongroupresourcedirectory!\n");
 823             goto end_4; /* failure */
 824           }
 825
 826           iconDirCount = icongroupresdir->NumberOfNamedEntries+icongroupresdir->NumberOfIdEntries;
 827
 828           if( nIconIndex == (UINT16)-1 )
 829           { RetPtr[0] = iconDirCount;
 830             goto end_3; /* success */
 831           }
 832
 833           if (nIconIndex >= iconDirCount)
 834           { WARN("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 835             GlobalFree16(hRet);
 836             goto end_4; /* failure */
 837           }
 838
 839           cids = (CURSORICONDIR**)HeapAlloc(GetProcessHeap(),0,n*sizeof(CURSORICONDIR*));
 840
 841           /* caller just wanted the number of entries */
 842           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 843
 844           /* assure we don't get too much ... */
 845           if( n > iconDirCount - nIconIndex )
 846           { n = iconDirCount - nIconIndex;
 847           }
 848
 849           /* starting from specified index ... */
 850           xresent = xresent+nIconIndex;
 851
 852           for (i=0;i<n;i++,xresent++)
 853           { CURSORICONDIR       *cid;
 854             PIMAGE_RESOURCE_DIRECTORY   resdir;
 855
 856             /* go down this resource entry, name */
 857             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s.OffsetToDirectory));
 858
 859             /* default language (0) */
 860             resdir = GetResDirEntryW(resdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 861             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 862
 863             /* lookup address in mapped image for virtual address */
 864             igdata = NULL;
 865
 866             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 867             { if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 868                 continue;
 869               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 870                 continue;
 871               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 872             }
 873
 874             if (!igdata)
 875             { WARN("no matching real address for icongroup!\n");
 876               goto end_4;       /* failure */
 877             }
 878             /* found */
 879             cid = (CURSORICONDIR*)igdata;
 880             cids[i] = cid;
 881             RetPtr[i] = LookupIconIdFromDirectoryEx(igdata,TRUE,GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON),0);
 882           }
 883
 884           iconresdir=GetResDirEntryW(rootresdir,RT_ICONW,(DWORD)rootresdir,FALSE);
 885
 886           if (!iconresdir)
 887           { WARN("No Iconresourcedirectory!\n");
 888             goto end_4; /* failure */
 889           }
 890
 891           for (i=0;i<n;i++)
 892           { PIMAGE_RESOURCE_DIRECTORY   xresdir;
 893             xresdir = GetResDirEntryW(iconresdir,(LPWSTR)(DWORD)RetPtr[i],(DWORD)rootresdir,FALSE);
 894             xresdir = GetResDirEntryW(xresdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 895             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 896             idata = NULL;
 897
 898             /* map virtual to address in image */
 899             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 900             { if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 901                 continue;
 902               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 903                 continue;
 904               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 905             }
 906             if (!idata)
 907             { WARN("no matching real address found for icondata!\n");
 908               RetPtr[i]=0;
 909               continue;
 910             }
 911             RetPtr[i] = CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON),0);
 912           }
 913           goto end_3;   /* sucess */
 914         }
 915         goto end_1;     /* return array with icon handles */
 916
 917 /* cleaning up (try & catch would be nicer) */
 918 end_4:  hRet = 0;       /* failure */
 919 end_3:  UnmapViewOfFile(peimage);       /* success */
 920 end_2:  CloseHandle(fmapping);
 921 end_1:  _lclose( hFile);
 922         return hRet;
 923 }
 924
 925 /*************************************************************************
 926  *             ExtractIcon16   (SHELL.34)
 927  */
 928 HICON16 WINAPI ExtractIcon16( HINSTANCE16 hInstance, LPCSTR lpszExeFileName,
 929         UINT16 nIconIndex )
 930 {   TRACE("\n");
 931     return ExtractIconA( hInstance, lpszExeFileName, nIconIndex );
 932 }
 933
 934 /*************************************************************************
 935  *             ExtractIconEx16   (SHELL.40)
 936  */
 937 HICON16 WINAPI ExtractIconEx16(
 938         LPCSTR lpszFile, INT16 nIconIndex, HICON16 *phiconLarge,
 939         HICON16 *phiconSmall, UINT16 nIcons
 940 ) {
 941     HICON       *ilarge,*ismall;
 942     UINT16      ret;
 943     int         i;
 944
 945     if (phiconLarge)
 946         ilarge = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 947     else
 948         ilarge = NULL;
 949     if (phiconSmall)
 950         ismall = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 951     else
 952         ismall = NULL;
 953     ret = ExtractIconExA(lpszFile,nIconIndex,ilarge,ismall,nIcons);
 954     if (ilarge) {
 955         for (i=0;i<nIcons;i++)
 956             phiconLarge[i]=ilarge[i];
 957         HeapFree(GetProcessHeap(),0,ilarge);
 958     }
 959     if (ismall) {
 960         for (i=0;i<nIcons;i++)
 961             phiconSmall[i]=ismall[i];
 962         HeapFree(GetProcessHeap(),0,ismall);
 963     }
 964     return ret;
 965 }
 966
 967 /*************************************************************************
 968  *                              ExtractAssociatedIconA
 969  *
 970  * Return icon for given file (either from file itself or from associated
 971  * executable) and patch parameters if needed.
 972  */
 973 HICON WINAPI ExtractAssociatedIconA(HINSTANCE hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 974 {       TRACE("\n");
 975         return ExtractAssociatedIcon16(hInst,lpIconPath,lpiIcon);
 976 }
 977
 978 /*************************************************************************
 979  *                              ExtractAssociatedIcon   [SHELL.36]
 980  *
 981  * Return icon for given file (either from file itself or from associated
 982  * executable) and patch parameters if needed.
 983  */
 984 HICON16 WINAPI ExtractAssociatedIcon16(HINSTANCE16 hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 985 {       HICON16 hIcon;
 986         WORD wDummyIcon = 0;
 987
 988         TRACE("\n");
 989
 990         if(lpiIcon == NULL)
 991             lpiIcon = &wDummyIcon;
 992
 993         hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
 994
 995         if( hIcon < 2 )
 996         { if( hIcon == 1 ) /* no icons found in given file */
 997           { char  tempPath[0x80];
 998             UINT16  uRet = FindExecutable16(lpIconPath,NULL,tempPath);
 999
1000             if( uRet > 32 && tempPath[0] )
1001             { strcpy(lpIconPath,tempPath);
1002               hIcon = ExtractIcon16(hInst, lpIconPath, *lpiIcon);
1003               if( hIcon > 2 )
1004                 return hIcon;
1005             }
1006             else hIcon = 0;
1007           }
1008
1009           if( hIcon == 1 )
1010             *lpiIcon = 2;   /* MSDOS icon - we found .exe but no icons in it */
1011           else
1012             *lpiIcon = 6;   /* generic icon - found nothing */
1013
1014           GetModuleFileName16(hInst, lpIconPath, 0x80);
1015           hIcon = LoadIcon16( hInst, MAKEINTRESOURCE16(*lpiIcon));
1016         }
1017         return hIcon;
1018 }
1019
1020 /*************************************************************************
1021  *                              FindEnvironmentString   [SHELL.38]
1022  *
1023  * Returns a pointer into the DOS environment... Ugh.
1024  */
1025 LPSTR SHELL_FindString(LPSTR lpEnv, LPCSTR entry)
1026 { UINT16 l;
1027
1028   TRACE("\n");
1029
1030   l = strlen(entry);
1031   for( ; *lpEnv ; lpEnv+=strlen(lpEnv)+1 )
1032   { if( strncasecmp(lpEnv, entry, l) )
1033       continue;
1034         if( !*(lpEnv+l) )
1035             return (lpEnv + l);                 /* empty entry */
1036         else if ( *(lpEnv+l)== '=' )
1037             return (lpEnv + l + 1);
1038     }
1039     return NULL;
1040 }
1041
1042 SEGPTR WINAPI FindEnvironmentString16(LPSTR str)
1043 { SEGPTR  spEnv;
1044   LPSTR lpEnv,lpString;
1045   TRACE("\n");
1046
1047   spEnv = GetDOSEnvironment16();
1048
1049   lpEnv = (LPSTR)PTR_SEG_TO_LIN(spEnv);
1050   lpString = (spEnv)?SHELL_FindString(lpEnv, str):NULL;
1051
1052     if( lpString )              /*  offset should be small enough */
1053         return spEnv + (lpString - lpEnv);
1054     return (SEGPTR)NULL;
1055 }
1056
1057 /*************************************************************************
1058  *                              DoEnvironmentSubst      [SHELL.37]
1059  *
1060  * Replace %KEYWORD% in the str with the value of variable KEYWORD
1061  * from "DOS" environment.
1062  */
1063 DWORD WINAPI DoEnvironmentSubst16(LPSTR str,WORD length)
1064 {
1065   LPSTR   lpEnv = (LPSTR)PTR_SEG_TO_LIN(GetDOSEnvironment16());
1066   LPSTR   lpBuffer = (LPSTR)HeapAlloc( GetProcessHeap(), 0, length);
1067   LPSTR   lpstr = str;
1068   LPSTR   lpbstr = lpBuffer;
1069
1070   CharToOemA(str,str);
1071
1072   TRACE("accept %s\n", str);
1073
1074   while( *lpstr && lpbstr - lpBuffer < length )
1075    {
1076      LPSTR lpend = lpstr;
1077
1078      if( *lpstr == '%' )
1079        {
1080           do { lpend++; } while( *lpend && *lpend != '%' );
1081           if( *lpend == '%' && lpend - lpstr > 1 )      /* found key */
1082             {
1083                LPSTR lpKey;
1084               *lpend = '\0';
1085                lpKey = SHELL_FindString(lpEnv, lpstr+1);
1086                if( lpKey )                              /* found key value */
1087                  {
1088                    int l = strlen(lpKey);
1089
1090                    if( l > length - (lpbstr - lpBuffer) - 1 )
1091                      {
1092            WARN("-- Env subst aborted - string too short\n");
1093                       *lpend = '%';
1094                        break;
1095                      }
1096                    strcpy(lpbstr, lpKey);
1097                    lpbstr += l;
1098                  }
1099                else break;
1100               *lpend = '%';
1101                lpstr = lpend + 1;
1102             }
1103           else break;                                   /* back off and whine */
1104
1105           continue;
1106        }
1107
1108      *lpbstr++ = *lpstr++;
1109    }
1110
1111  *lpbstr = '\0';
1112   if( lpstr - str == strlen(str) )
1113     {
1114       strncpy(str, lpBuffer, length);
1115       length = 1;
1116     }
1117   else
1118       length = 0;
1119
1120   TRACE("-- return %s\n", str);
1121
1122   OemToCharA(str,str);
1123   HeapFree( GetProcessHeap(), 0, lpBuffer);
1124
1125   /*  Return str length in the LOWORD
1126    *  and 1 in HIWORD if subst was successful.
1127    */
1128  return (DWORD)MAKELONG(strlen(str), length);
1129 }
1130
1131 /*************************************************************************
1132  *                              ShellHookProc           [SHELL.103]
1133  * System-wide WH_SHELL hook.
1134  */
1135 LRESULT WINAPI ShellHookProc16(INT16 code, WPARAM16 wParam, LPARAM lParam)
1136 {
1137     TRACE("%i, %04x, %08x\n", code, wParam,
1138                                                       (unsigned)lParam );
1139     if( SHELL_hHook && SHELL_hWnd )
1140     {
1141         UINT16  uMsg = 0;
1142         switch( code )
1143         {
1144             case HSHELL_WINDOWCREATED:          uMsg = uMsgWndCreated;   break;
1145             case HSHELL_WINDOWDESTROYED:        uMsg = uMsgWndDestroyed; break;
1146             case HSHELL_ACTIVATESHELLWINDOW:    uMsg = uMsgShellActivate;
1147         }
1148         PostMessage16( SHELL_hWnd, uMsg, wParam, 0 );
1149     }
1150     return CallNextHookEx16( WH_SHELL, code, wParam, lParam );
1151 }
1152
1153 /*************************************************************************
1154  *                              RegisterShellHook       [SHELL.102]
1155  */
1156 BOOL WINAPI RegisterShellHook16(HWND16 hWnd, UINT16 uAction)
1157 {
1158     TRACE("%04x [%u]\n", hWnd, uAction );
1159
1160     switch( uAction )
1161     {
1162     case 2:  /* register hWnd as a shell window */
1163         if( !SHELL_hHook )
1164         {
1165             HMODULE16 hShell = GetModuleHandle16( "SHELL" );
1166             HOOKPROC16 hookProc = (HOOKPROC16)NE_GetEntryPoint( hShell, 103 );
1167             SHELL_hHook = SetWindowsHookEx16( WH_SHELL, hookProc, hShell, 0 );
1168             if ( SHELL_hHook )
1169             {
1170                 uMsgWndCreated = RegisterWindowMessageA( lpstrMsgWndCreated );
1171                 uMsgWndDestroyed = RegisterWindowMessageA( lpstrMsgWndDestroyed );
1172                 uMsgShellActivate = RegisterWindowMessageA( lpstrMsgShellActivate );
1173             }
1174             else
1175                 WARN("-- unable to install ShellHookProc()!\n");
1176         }
1177
1178         if ( SHELL_hHook )
1179             return ((SHELL_hWnd = hWnd) != 0);
1180         break;
1181
1182     default:
1183         WARN("-- unknown code %i\n", uAction );
1184         SHELL_hWnd = 0; /* just in case */
1185     }
1186     return FALSE;
1187 }