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

   1 /*
   2  *                              Shell Library Functions
   3  *
   4  *  1998 Marcus Meissner
   5  */
   6 #include <assert.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <ctype.h>
  11 #include "wine/winuser16.h"
  12 #include "wine/winbase16.h"
  13 #include "wine/shell16.h"
  14 #include "winerror.h"
  15 #include "file.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 "imagelist.h"
  28
  29 DECLARE_DEBUG_CHANNEL(exec)
  30 DECLARE_DEBUG_CHANNEL(shell)
  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 static const char*      lpstrMsgWndCreated = "OTHERWINDOWCREATED";
  59 static const char*      lpstrMsgWndDestroyed = "OTHERWINDOWDESTROYED";
  60 static const char*      lpstrMsgShellActivate = "ACTIVATESHELLWINDOW";
  61
  62 static HWND16   SHELL_hWnd = 0;
  63 static HHOOK    SHELL_hHook = 0;
  64 static UINT16   uMsgWndCreated = 0;
  65 static UINT16   uMsgWndDestroyed = 0;
  66 static UINT16   uMsgShellActivate = 0;
  67 HINSTANCE16     SHELL_hInstance = 0;
  68 HINSTANCE SHELL_hInstance32;
  69 static int SHELL_Attach = 0;
  70
  71 /***********************************************************************
  72  * SHELL_DllEntryPoint [SHELL.entry]
  73  *
  74  * Initialization code for shell.dll. Automatically loads the
  75  * 32-bit shell32.dll to allow thunking up to 32-bit code.
  76  *
  77  * RETURNS:
  78  */
  79 BOOL WINAPI SHELL_DllEntryPoint(DWORD Reason, HINSTANCE16 hInst,
  80                                 WORD ds, WORD HeapSize, DWORD res1, WORD res2)
  81 {
  82     TRACE_(shell)("(%08lx, %04x, %04x, %04x, %08lx, %04x)\n",
  83                   Reason, hInst, ds, HeapSize, res1, res2);
  84
  85     switch(Reason)
  86     {
  87     case DLL_PROCESS_ATTACH:
  88         SHELL_Attach++;
  89         if (SHELL_hInstance)
  90         {
  91             ERR_(shell)("shell.dll instantiated twice!\n");
  92             /*
  93              * We should return FALSE here, but that will break
  94              * most apps that use CreateProcess because we do
  95              * not yet support seperate address-spaces.
  96              */
  97             return TRUE;
  98         }
  99
 100         SHELL_hInstance = hInst;
 101         if(!SHELL_hInstance32)
 102         {
 103             if(!(SHELL_hInstance32 = LoadLibraryA("shell32.dll")))
 104             {
 105                 ERR_(shell)("Could not load sibling shell32.dll\n");
 106                 return FALSE;
 107             }
 108         }
 109         break;
 110
 111     case DLL_PROCESS_DETACH:
 112         if(!--SHELL_Attach)
 113         {
 114             SHELL_hInstance = 0;
 115             if(SHELL_hInstance32)
 116                 FreeLibrary(SHELL_hInstance32);
 117         }
 118         break;
 119     }
 120     return TRUE;
 121 }
 122
 123 /*************************************************************************
 124  *                              DragAcceptFiles32               [SHELL32.54]
 125  */
 126 void WINAPI DragAcceptFiles(HWND hWnd, BOOL b)
 127 {
 128   LONG exstyle;
 129
 130
 131   if( !IsWindow(hWnd) )
 132         return;
 133   exstyle = GetWindowLongA(hWnd,GWL_EXSTYLE);
 134   if (b)exstyle |= WS_EX_ACCEPTFILES;
 135   else  exstyle &= ~WS_EX_ACCEPTFILES;
 136   SetWindowLongA(hWnd,GWL_EXSTYLE,exstyle);
 137 }
 138
 139 /*************************************************************************
 140  *                              DragAcceptFiles16               [SHELL.9]
 141  */
 142 void WINAPI DragAcceptFiles16(HWND16 hWnd, BOOL16 b)
 143 {
 144   DragAcceptFiles(hWnd, b);
 145 }
 146
 147 /*************************************************************************
 148  *                              SHELL_DragQueryFile     [internal]
 149  *
 150  */
 151 static UINT SHELL_DragQueryFile(LPSTR lpDrop, LPWSTR lpwDrop, UINT lFile,
 152                                   LPSTR lpszFile, LPWSTR lpszwFile, UINT lLength)
 153 {
 154     UINT i;
 155
 156     i = 0;
 157     if (lpDrop) {
 158     while (i++ < lFile) {
 159         while (*lpDrop++); /* skip filename */
 160         if (!*lpDrop)
 161           return (lFile == 0xFFFFFFFF) ? i : 0;
 162       }
 163     }
 164     if (lpwDrop) {
 165       while (i++ < lFile) {
 166         while (*lpwDrop++); /* skip filename */
 167         if (!*lpwDrop)
 168           return (lFile == 0xFFFFFFFF) ? i : 0;
 169       }
 170     }
 171
 172     if (lpDrop)  i = lstrlenA(lpDrop);
 173     if (lpwDrop) i = lstrlenW(lpwDrop);
 174     i++;
 175     if (!lpszFile && !lpszwFile) {
 176       return i;   /* needed buffer size */
 177     }
 178     i = (lLength > i) ? i : lLength;
 179     if (lpszFile) {
 180       if (lpDrop) lstrcpynA (lpszFile,  lpDrop,  i);
 181       else        lstrcpynWtoA(lpszFile,  lpwDrop, i);
 182     } else {
 183       if (lpDrop) lstrcpynAtoW(lpszwFile, lpDrop,  i);
 184       else        lstrcpynW (lpszwFile, lpwDrop, i);
 185     }
 186     return i;
 187 }
 188
 189 /*************************************************************************
 190  *                              DragQueryFile32A        [SHELL32.81] [shell32.82]
 191  */
 192 UINT WINAPI DragQueryFileA(HDROP hDrop, UINT lFile, LPSTR lpszFile,
 193                               UINT lLength)
 194 { /* hDrop is a global memory block allocated with GMEM_SHARE
 195      * with DROPFILESTRUCT as a header and filenames following
 196      * it, zero length filename is in the end */
 197
 198     LPDROPFILESTRUCT lpDropFileStruct;
 199     LPSTR lpCurrent;
 200     UINT i;
 201
 202     TRACE_(shell)("(%08x, %x, %p, %u)\n",       hDrop,lFile,lpszFile,lLength);
 203
 204     lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 205     if(!lpDropFileStruct)
 206       return 0;
 207
 208     lpCurrent = (LPSTR) lpDropFileStruct + lpDropFileStruct->lSize;
 209     i = SHELL_DragQueryFile(lpCurrent, NULL, lFile, lpszFile, NULL, lLength);
 210     GlobalUnlock(hDrop);
 211     return i;
 212 }
 213
 214 /*************************************************************************
 215  *                              DragQueryFile32W        [shell32.133]
 216  */
 217 UINT WINAPI DragQueryFileW(HDROP hDrop, UINT lFile, LPWSTR lpszwFile,
 218                               UINT lLength)
 219 {
 220     LPDROPFILESTRUCT lpDropFileStruct;
 221     LPWSTR lpwCurrent;
 222     UINT i;
 223
 224     TRACE_(shell)("(%08x, %x, %p, %u)\n",       hDrop,lFile,lpszwFile,lLength);
 225
 226     lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 227     if(!lpDropFileStruct)
 228       return 0;
 229
 230     lpwCurrent = (LPWSTR) lpDropFileStruct + lpDropFileStruct->lSize;
 231     i = SHELL_DragQueryFile(NULL, lpwCurrent, lFile, NULL, lpszwFile,lLength);
 232     GlobalUnlock(hDrop);
 233     return i;
 234 }
 235 /*************************************************************************
 236  *                              DragQueryFile16         [SHELL.11]
 237  */
 238 UINT16 WINAPI DragQueryFile16(HDROP16 hDrop, WORD wFile, LPSTR lpszFile,
 239                             WORD wLength)
 240 { /* hDrop is a global memory block allocated with GMEM_SHARE
 241      * with DROPFILESTRUCT as a header and filenames following
 242      * it, zero length filename is in the end */
 243
 244     LPDROPFILESTRUCT16 lpDropFileStruct;
 245     LPSTR lpCurrent;
 246     WORD  i;
 247
 248     TRACE_(shell)("(%04x, %x, %p, %u)\n", hDrop,wFile,lpszFile,wLength);
 249
 250     lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 251     if(!lpDropFileStruct)
 252       return 0;
 253
 254     lpCurrent = (LPSTR) lpDropFileStruct + lpDropFileStruct->wSize;
 255
 256     i = (WORD)SHELL_DragQueryFile(lpCurrent, NULL, wFile==0xffff?0xffffffff:wFile,
 257                                   lpszFile, NULL, wLength);
 258     GlobalUnlock16(hDrop);
 259     return i;
 260 }
 261
 262
 263
 264 /*************************************************************************
 265  *                              DragFinish32            [SHELL32.80]
 266  */
 267 void WINAPI DragFinish(HDROP h)
 268 { TRACE_(shell)("\n");
 269     GlobalFree((HGLOBAL)h);
 270 }
 271
 272 /*************************************************************************
 273  *                              DragFinish16            [SHELL.12]
 274  */
 275 void WINAPI DragFinish16(HDROP16 h)
 276 { TRACE_(shell)("\n");
 277     GlobalFree16((HGLOBAL16)h);
 278 }
 279
 280
 281 /*************************************************************************
 282  *                              DragQueryPoint32                [SHELL32.135]
 283  */
 284 BOOL WINAPI DragQueryPoint(HDROP hDrop, POINT *p)
 285 {
 286   LPDROPFILESTRUCT lpDropFileStruct;
 287   BOOL             bRet;
 288   TRACE_(shell)("\n");
 289   lpDropFileStruct = (LPDROPFILESTRUCT) GlobalLock(hDrop);
 290
 291   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT));
 292   bRet = lpDropFileStruct->fInNonClientArea;
 293
 294   GlobalUnlock(hDrop);
 295   return bRet;
 296 }
 297
 298 /*************************************************************************
 299  *                              DragQueryPoint16                [SHELL.13]
 300  */
 301 BOOL16 WINAPI DragQueryPoint16(HDROP16 hDrop, POINT16 *p)
 302 {
 303   LPDROPFILESTRUCT16 lpDropFileStruct;
 304   BOOL16           bRet;
 305   TRACE_(shell)("\n");
 306   lpDropFileStruct = (LPDROPFILESTRUCT16) GlobalLock16(hDrop);
 307
 308   memcpy(p,&lpDropFileStruct->ptMousePos,sizeof(POINT16));
 309   bRet = lpDropFileStruct->fInNonClientArea;
 310
 311   GlobalUnlock16(hDrop);
 312   return bRet;
 313 }
 314
 315 /*************************************************************************
 316  *      SHELL_FindExecutable [Internal]
 317  *
 318  * Utility for code sharing between FindExecutable and ShellExecute
 319  */
 320 HINSTANCE SHELL_FindExecutable( LPCSTR lpFile,
 321                                          LPCSTR lpOperation,
 322                                          LPSTR lpResult)
 323 { char *extension = NULL; /* pointer to file extension */
 324     char tmpext[5];         /* local copy to mung as we please */
 325     char filetype[256];     /* registry name for this filetype */
 326     LONG filetypelen=256;   /* length of above */
 327     char command[256];      /* command from registry */
 328     LONG commandlen=256;    /* This is the most DOS can handle :) */
 329     char buffer[256];       /* Used to GetProfileString */
 330     HINSTANCE retval=31;  /* default - 'No association was found' */
 331     char *tok;              /* token pointer */
 332     int i;                  /* random counter */
 333     char xlpFile[256];      /* result of SearchPath */
 334
 335   TRACE_(shell)("%s\n", (lpFile != NULL?lpFile:"-") );
 336
 337     lpResult[0]='\0'; /* Start off with an empty return string */
 338
 339     /* trap NULL parameters on entry */
 340     if (( lpFile == NULL ) || ( lpResult == NULL ) || ( lpOperation == NULL ))
 341   { WARN_(exec)("(lpFile=%s,lpResult=%s,lpOperation=%s): NULL parameter\n",
 342            lpFile, lpOperation, lpResult);
 343         return 2; /* File not found. Close enough, I guess. */
 344     }
 345
 346     if (SearchPathA( NULL, lpFile,".exe",sizeof(xlpFile),xlpFile,NULL))
 347   { TRACE_(shell)("SearchPath32A returned non-zero\n");
 348         lpFile = xlpFile;
 349     }
 350
 351     /* First thing we need is the file's extension */
 352     extension = strrchr( xlpFile, '.' ); /* Assume last "." is the one; */
 353                                         /* File->Run in progman uses */
 354                                         /* .\FILE.EXE :( */
 355   TRACE_(shell)("xlpFile=%s,extension=%s\n", xlpFile, extension);
 356
 357     if ((extension == NULL) || (extension == &xlpFile[strlen(xlpFile)]))
 358   { WARN_(shell)("Returning 31 - No association\n");
 359         return 31; /* no association */
 360     }
 361
 362     /* Make local copy & lowercase it for reg & 'programs=' lookup */
 363     lstrcpynA( tmpext, extension, 5 );
 364     CharLowerA( tmpext );
 365   TRACE_(shell)("%s file\n", tmpext);
 366
 367     /* Three places to check: */
 368     /* 1. win.ini, [windows], programs (NB no leading '.') */
 369     /* 2. Registry, HKEY_CLASS_ROOT\<filetype>\shell\open\command */
 370     /* 3. win.ini, [extensions], extension (NB no leading '.' */
 371     /* All I know of the order is that registry is checked before */
 372     /* extensions; however, it'd make sense to check the programs */
 373     /* section first, so that's what happens here. */
 374
 375     /* See if it's a program - if GetProfileString fails, we skip this
 376      * section. Actually, if GetProfileString fails, we've probably
 377      * got a lot more to worry about than running a program... */
 378     if ( GetProfileStringA("windows", "programs", "exe pif bat com",
 379                                                   buffer, sizeof(buffer)) > 0 )
 380   { for (i=0;i<strlen(buffer); i++) buffer[i]=tolower(buffer[i]);
 381
 382                 tok = strtok(buffer, " \t"); /* ? */
 383                 while( tok!= NULL)
 384                   {
 385                         if (strcmp(tok, &tmpext[1])==0) /* have to skip the leading "." */
 386                           {
 387                                 strcpy(lpResult, xlpFile);
 388                                 /* Need to perhaps check that the file has a path
 389                                  * attached */
 390         TRACE_(shell)("found %s\n", lpResult);
 391                                 return 33;
 392
 393                 /* Greater than 32 to indicate success FIXME According to the
 394                  * docs, I should be returning a handle for the
 395                  * executable. Does this mean I'm supposed to open the
 396                  * executable file or something? More RTFM, I guess... */
 397                           }
 398                         tok=strtok(NULL, " \t");
 399                   }
 400           }
 401
 402     /* Check registry */
 403     if (RegQueryValue16( HKEY_CLASSES_ROOT, tmpext, filetype,
 404                          &filetypelen ) == ERROR_SUCCESS )
 405     {
 406         filetype[filetypelen]='\0';
 407   TRACE_(shell)("File type: %s\n", filetype);
 408
 409         /* Looking for ...buffer\shell\lpOperation\command */
 410         strcat( filetype, "\\shell\\" );
 411         strcat( filetype, lpOperation );
 412         strcat( filetype, "\\command" );
 413
 414         if (RegQueryValue16( HKEY_CLASSES_ROOT, filetype, command,
 415                              &commandlen ) == ERROR_SUCCESS )
 416         {
 417             /* Is there a replace() function anywhere? */
 418             command[commandlen]='\0';
 419             strcpy( lpResult, command );
 420             tok=strstr( lpResult, "%1" );
 421             if (tok != NULL)
 422             {
 423                 tok[0]='\0'; /* truncate string at the percent */
 424                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 425                 tok=strstr( command, "%1" );
 426                 if ((tok!=NULL) && (strlen(tok)>2))
 427                 {
 428                     strcat( lpResult, &tok[2] );
 429                 }
 430             }
 431             retval=33; /* FIXME see above */
 432         }
 433     }
 434     else /* Check win.ini */
 435     {
 436         /* Toss the leading dot */
 437         extension++;
 438         if ( GetProfileStringA( "extensions", extension, "", command,
 439                                   sizeof(command)) > 0)
 440           {
 441                 if (strlen(command)!=0)
 442                   {
 443                         strcpy( lpResult, command );
 444                         tok=strstr( lpResult, "^" ); /* should be ^.extension? */
 445                         if (tok != NULL)
 446                           {
 447                                 tok[0]='\0';
 448                                 strcat( lpResult, xlpFile ); /* what if no dir in xlpFile? */
 449                                 tok=strstr( command, "^" ); /* see above */
 450                                 if ((tok != NULL) && (strlen(tok)>5))
 451                                   {
 452                                         strcat( lpResult, &tok[5]);
 453                                   }
 454                           }
 455                         retval=33; /* FIXME - see above */
 456                   }
 457           }
 458         }
 459
 460     TRACE_(shell)("returning %s\n", lpResult);
 461     return retval;
 462 }
 463
 464 /*************************************************************************
 465  *                              ShellExecute16          [SHELL.20]
 466  */
 467 HINSTANCE16 WINAPI ShellExecute16( HWND16 hWnd, LPCSTR lpOperation,
 468                                    LPCSTR lpFile, LPCSTR lpParameters,
 469                                    LPCSTR lpDirectory, INT16 iShowCmd )
 470 {   HINSTANCE16 retval=31;
 471     char old_dir[1024];
 472     char cmd[256];
 473
 474     TRACE_(shell)("(%04x,'%s','%s','%s','%s',%x)\n",
 475                 hWnd, lpOperation ? lpOperation:"<null>", lpFile ? lpFile:"<null>",
 476                 lpParameters ? lpParameters : "<null>",
 477                 lpDirectory ? lpDirectory : "<null>", iShowCmd);
 478
 479     if (lpFile==NULL) return 0; /* should not happen */
 480     if (lpOperation==NULL) /* default is open */
 481       lpOperation="open";
 482
 483     if (lpDirectory)
 484     { GetCurrentDirectoryA( sizeof(old_dir), old_dir );
 485         SetCurrentDirectoryA( lpDirectory );
 486     }
 487
 488     retval = SHELL_FindExecutable( lpFile, lpOperation, cmd );
 489
 490     if (retval > 32)  /* Found */
 491     {
 492         if (lpParameters)
 493         {
 494             strcat(cmd," ");
 495             strcat(cmd,lpParameters);
 496         }
 497
 498         TRACE_(shell)("starting %s\n",cmd);
 499         SYSLEVEL_ReleaseWin16Lock();
 500         retval = WinExec( cmd, iShowCmd );
 501         SYSLEVEL_RestoreWin16Lock();
 502     }
 503     if (lpDirectory)
 504       SetCurrentDirectoryA( old_dir );
 505     return retval;
 506 }
 507
 508 /*************************************************************************
 509  *             FindExecutable16   (SHELL.21)
 510  */
 511 HINSTANCE16 WINAPI FindExecutable16( LPCSTR lpFile, LPCSTR lpDirectory,
 512                                      LPSTR lpResult )
 513 { return (HINSTANCE16)FindExecutableA( lpFile, lpDirectory, lpResult );
 514 }
 515
 516
 517 /*************************************************************************
 518  *             AboutDlgProc16   (SHELL.33)
 519  */
 520 BOOL16 WINAPI AboutDlgProc16( HWND16 hWnd, UINT16 msg, WPARAM16 wParam,
 521                                LPARAM lParam )
 522 { return AboutDlgProc( hWnd, msg, wParam, lParam );
 523 }
 524
 525
 526 /*************************************************************************
 527  *             ShellAbout16   (SHELL.22)
 528  */
 529 BOOL16 WINAPI ShellAbout16( HWND16 hWnd, LPCSTR szApp, LPCSTR szOtherStuff,
 530                             HICON16 hIcon )
 531 { return ShellAboutA( hWnd, szApp, szOtherStuff, hIcon );
 532 }
 533
 534 /*************************************************************************
 535  *                              SHELL_GetResourceTable
 536  */
 537 static DWORD SHELL_GetResourceTable(HFILE hFile,LPBYTE *retptr)
 538 {       IMAGE_DOS_HEADER        mz_header;
 539         char                    magic[4];
 540         int                     size;
 541
 542         TRACE_(shell)("\n");
 543
 544         *retptr = NULL;
 545         _llseek( hFile, 0, SEEK_SET );
 546         if ((_lread(hFile,&mz_header,sizeof(mz_header)) != sizeof(mz_header)) || (mz_header.e_magic != IMAGE_DOS_SIGNATURE))
 547         { /* .ICO file ? */
 548           if (mz_header.e_cblp == 1)
 549           { /* ICONHEADER.idType, must be 1 */
 550             *retptr = (LPBYTE)-1;
 551             return 1;
 552           }
 553           else
 554             return 0; /* failed */
 555         }
 556         _llseek( hFile, mz_header.e_lfanew, SEEK_SET );
 557
 558         if (_lread( hFile, magic, sizeof(magic) ) != sizeof(magic))
 559           return 0;
 560
 561         _llseek( hFile, mz_header.e_lfanew, SEEK_SET);
 562
 563         if (*(DWORD*)magic  == IMAGE_NT_SIGNATURE)
 564           return IMAGE_NT_SIGNATURE;
 565
 566         if (*(WORD*)magic == IMAGE_OS2_SIGNATURE)
 567         { IMAGE_OS2_HEADER      ne_header;
 568           LPBYTE                pTypeInfo = (LPBYTE)-1;
 569
 570           if (_lread(hFile,&ne_header,sizeof(ne_header))!=sizeof(ne_header))
 571             return 0;
 572
 573           if (ne_header.ne_magic != IMAGE_OS2_SIGNATURE)
 574             return 0;
 575
 576           size = ne_header.rname_tab_offset - ne_header.resource_tab_offset;
 577
 578           if( size > sizeof(NE_TYPEINFO) )
 579           { pTypeInfo = (BYTE*)HeapAlloc( GetProcessHeap(), 0, size);
 580             if( pTypeInfo )
 581             { _llseek(hFile, mz_header.e_lfanew+ne_header.resource_tab_offset, SEEK_SET);
 582               if( _lread( hFile, (char*)pTypeInfo, size) != size )
 583               { HeapFree( GetProcessHeap(), 0, pTypeInfo);
 584                 pTypeInfo = NULL;
 585               }
 586             }
 587           }
 588           *retptr = pTypeInfo;
 589           return IMAGE_OS2_SIGNATURE;
 590         }
 591         return 0; /* failed */
 592 }
 593
 594 /*************************************************************************
 595  *                      SHELL_LoadResource
 596  */
 597 static HGLOBAL16 SHELL_LoadResource(HINSTANCE16 hInst, HFILE hFile, NE_NAMEINFO* pNInfo, WORD sizeShift)
 598 {       BYTE*  ptr;
 599         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, (DWORD)pNInfo->length << sizeShift);
 600
 601         TRACE_(shell)("\n");
 602
 603         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 604         { _llseek( hFile, (DWORD)pNInfo->offset << sizeShift, SEEK_SET);
 605           _lread( hFile, (char*)ptr, pNInfo->length << sizeShift);
 606           return handle;
 607         }
 608         return 0;
 609 }
 610
 611 /*************************************************************************
 612  *                      ICO_LoadIcon
 613  */
 614 static HGLOBAL16 ICO_LoadIcon(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIRENTRY lpiIDE)
 615 {       BYTE*  ptr;
 616         HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10, lpiIDE->dwBytesInRes);
 617         TRACE_(shell)("\n");
 618         if( (ptr = (BYTE*)GlobalLock16( handle )) )
 619         { _llseek( hFile, lpiIDE->dwImageOffset, SEEK_SET);
 620           _lread( hFile, (char*)ptr, lpiIDE->dwBytesInRes);
 621           return handle;
 622         }
 623         return 0;
 624 }
 625
 626 /*************************************************************************
 627  *                      ICO_GetIconDirectory
 628  *
 629  *  Read .ico file and build phony ICONDIR struct for GetIconID
 630  */
 631 static HGLOBAL16 ICO_GetIconDirectory(HINSTANCE16 hInst, HFILE hFile, LPicoICONDIR* lplpiID )
 632 { WORD    id[3];  /* idReserved, idType, idCount */
 633   LPicoICONDIR  lpiID;
 634   int           i;
 635
 636   TRACE_(shell)("\n");
 637   _llseek( hFile, 0, SEEK_SET );
 638   if( _lread(hFile,(char*)id,sizeof(id)) != sizeof(id) ) return 0;
 639
 640   /* check .ICO header
 641    *
 642    * - see http://www.microsoft.com/win32dev/ui/icons.htm
 643    */
 644
 645   if( id[0] || id[1] != 1 || !id[2] ) return 0;
 646
 647   i = id[2]*sizeof(icoICONDIRENTRY) ;
 648
 649   lpiID = (LPicoICONDIR)HeapAlloc( GetProcessHeap(), 0, i + sizeof(id));
 650
 651   if( _lread(hFile,(char*)lpiID->idEntries,i) == i )
 652   { HGLOBAL16 handle = DirectResAlloc16( hInst, 0x10,
 653                                      id[2]*sizeof(CURSORICONDIRENTRY) + sizeof(id) );
 654      if( handle )
 655     { CURSORICONDIR*     lpID = (CURSORICONDIR*)GlobalLock16( handle );
 656        lpID->idReserved = lpiID->idReserved = id[0];
 657        lpID->idType = lpiID->idType = id[1];
 658        lpID->idCount = lpiID->idCount = id[2];
 659        for( i=0; i < lpiID->idCount; i++ )
 660       { memcpy((void*)(lpID->idEntries + i),
 661                    (void*)(lpiID->idEntries + i), sizeof(CURSORICONDIRENTRY) - 2);
 662             lpID->idEntries[i].wResId = i;
 663          }
 664       *lplpiID = lpiID;
 665        return handle;
 666      }
 667   }
 668   /* fail */
 669
 670   HeapFree( GetProcessHeap(), 0, lpiID);
 671   return 0;
 672 }
 673
 674 /*************************************************************************
 675  *                      InternalExtractIcon             [SHELL.39]
 676  *
 677  * This abortion is called directly by Progman
 678  */
 679 HGLOBAL16 WINAPI InternalExtractIcon16(HINSTANCE16 hInstance,
 680                                      LPCSTR lpszExeFileName, UINT16 nIconIndex, WORD n )
 681 {       HGLOBAL16       hRet = 0;
 682         HGLOBAL16*      RetPtr = NULL;
 683         LPBYTE          pData;
 684         OFSTRUCT        ofs;
 685         DWORD           sig;
 686         HFILE           hFile = OpenFile( lpszExeFileName, &ofs, OF_READ );
 687         UINT16          iconDirCount = 0,iconCount = 0;
 688         LPBYTE          peimage;
 689         HANDLE  fmapping;
 690
 691         TRACE_(shell)("(%04x,file %s,start %d,extract %d\n",
 692                        hInstance, lpszExeFileName, nIconIndex, n);
 693
 694         if( hFile == HFILE_ERROR || !n )
 695           return 0;
 696
 697         hRet = GlobalAlloc16( GMEM_FIXED | GMEM_ZEROINIT, sizeof(HICON16)*n);
 698         RetPtr = (HICON16*)GlobalLock16(hRet);
 699
 700         *RetPtr = (n == 0xFFFF)? 0: 1;  /* error return values */
 701
 702         sig = SHELL_GetResourceTable(hFile,&pData);
 703
 704         if( sig==IMAGE_OS2_SIGNATURE || sig==1 ) /* .ICO file */
 705         { HICON16        hIcon = 0;
 706           NE_TYPEINFO* pTInfo = (NE_TYPEINFO*)(pData + 2);
 707           NE_NAMEINFO* pIconStorage = NULL;
 708           NE_NAMEINFO* pIconDir = NULL;
 709           LPicoICONDIR lpiID = NULL;
 710
 711           if( pData == (BYTE*)-1 )
 712           { hIcon = ICO_GetIconDirectory(hInstance, hFile, &lpiID);     /* check for .ICO file */
 713             if( hIcon )
 714             { iconDirCount = 1; iconCount = lpiID->idCount;
 715             }
 716           }
 717           else while( pTInfo->type_id && !(pIconStorage && pIconDir) )
 718           { if( pTInfo->type_id == NE_RSCTYPE_GROUP_ICON )      /* find icon directory and icon repository */
 719             { iconDirCount = pTInfo->count;
 720               pIconDir = ((NE_NAMEINFO*)(pTInfo + 1));
 721               TRACE_(shell)("\tfound directory - %i icon families\n", iconDirCount);
 722             }
 723             if( pTInfo->type_id == NE_RSCTYPE_ICON )
 724             { iconCount = pTInfo->count;
 725               pIconStorage = ((NE_NAMEINFO*)(pTInfo + 1));
 726               TRACE_(shell)("\ttotal icons - %i\n", iconCount);
 727             }
 728             pTInfo = (NE_TYPEINFO *)((char*)(pTInfo+1)+pTInfo->count*sizeof(NE_NAMEINFO));
 729           }
 730
 731           /* load resources and create icons */
 732
 733           if( (pIconStorage && pIconDir) || lpiID )
 734           { if( nIconIndex == (UINT16)-1 )
 735             { RetPtr[0] = iconDirCount;
 736             }
 737             else if( nIconIndex < iconDirCount )
 738             { UINT16   i, icon;
 739               if( n > iconDirCount - nIconIndex )
 740                 n = iconDirCount - nIconIndex;
 741
 742               for( i = nIconIndex; i < nIconIndex + n; i++ )
 743               { /* .ICO files have only one icon directory */
 744
 745                 if( lpiID == NULL )
 746                   hIcon = SHELL_LoadResource( hInstance, hFile, pIconDir + i, *(WORD*)pData );
 747                 RetPtr[i-nIconIndex] = GetIconID16( hIcon, 3 );
 748                 GlobalFree16(hIcon);
 749               }
 750
 751               for( icon = nIconIndex; icon < nIconIndex + n; icon++ )
 752               { hIcon = 0;
 753                 if( lpiID )
 754                 { hIcon = ICO_LoadIcon( hInstance, hFile, lpiID->idEntries + RetPtr[icon-nIconIndex]);
 755                 }
 756                 else
 757                 { for( i = 0; i < iconCount; i++ )
 758                   { if( pIconStorage[i].id == (RetPtr[icon-nIconIndex] | 0x8000) )
 759                     { hIcon = SHELL_LoadResource( hInstance, hFile, pIconStorage + i,*(WORD*)pData );
 760                     }
 761                   }
 762                 }
 763                 if( hIcon )
 764                 { RetPtr[icon-nIconIndex] = LoadIconHandler16( hIcon, TRUE );
 765                   FarSetOwner16( RetPtr[icon-nIconIndex], GetExePtr(hInstance) );
 766                 }
 767                 else
 768                 { RetPtr[icon-nIconIndex] = 0;
 769                 }
 770               }
 771             }
 772           }
 773           if( lpiID )
 774             HeapFree( GetProcessHeap(), 0, lpiID);
 775           else
 776             HeapFree( GetProcessHeap(), 0, pData);
 777         }
 778
 779         if( sig == IMAGE_NT_SIGNATURE)
 780         { LPBYTE                idata,igdata;
 781           PIMAGE_DOS_HEADER     dheader;
 782           PIMAGE_NT_HEADERS     pe_header;
 783           PIMAGE_SECTION_HEADER pe_sections;
 784           PIMAGE_RESOURCE_DIRECTORY     rootresdir,iconresdir,icongroupresdir;
 785           PIMAGE_RESOURCE_DATA_ENTRY    idataent,igdataent;
 786           int                   i,j;
 787           PIMAGE_RESOURCE_DIRECTORY_ENTRY       xresent;
 788           CURSORICONDIR         **cids;
 789
 790           fmapping = CreateFileMappingA(hFile,NULL,PAGE_READONLY|SEC_COMMIT,0,0,NULL);
 791           if (fmapping == 0)
 792           { /* FIXME, INVALID_HANDLE_VALUE? */
 793             WARN_(shell)("failed to create filemap.\n");
 794             hRet = 0;
 795             goto end_2; /* failure */
 796           }
 797           peimage = MapViewOfFile(fmapping,FILE_MAP_READ,0,0,0);
 798           if (!peimage)
 799           { WARN_(shell)("failed to mmap filemap.\n");
 800             hRet = 0;
 801             goto end_2; /* failure */
 802           }
 803           dheader = (PIMAGE_DOS_HEADER)peimage;
 804
 805           /* it is a pe header, SHELL_GetResourceTable checked that */
 806           pe_header = (PIMAGE_NT_HEADERS)(peimage+dheader->e_lfanew);
 807
 808           /* probably makes problems with short PE headers... but I haven't seen
 809           * one yet...
 810           */
 811           pe_sections = (PIMAGE_SECTION_HEADER)(((char*)pe_header)+sizeof(*pe_header));
 812           rootresdir = NULL;
 813
 814           for (i=0;i<pe_header->FileHeader.NumberOfSections;i++)
 815           { if (pe_sections[i].Characteristics & IMAGE_SCN_CNT_UNINITIALIZED_DATA)
 816               continue;
 817             /* FIXME: doesn't work when the resources are not in a seperate section */
 818             if (pe_sections[i].VirtualAddress == pe_header->OptionalHeader.DataDirectory[IMAGE_DIRECTORY_ENTRY_RESOURCE].VirtualAddress)
 819             { rootresdir = (PIMAGE_RESOURCE_DIRECTORY)((char*)peimage+pe_sections[i].PointerToRawData);
 820               break;
 821             }
 822           }
 823
 824           if (!rootresdir)
 825           { WARN_(shell)("haven't found section for resource directory.\n");
 826             goto end_4; /* failure */
 827           }
 828
 829           icongroupresdir = GetResDirEntryW(rootresdir,RT_GROUP_ICONW, (DWORD)rootresdir,FALSE);
 830
 831           if (!icongroupresdir)
 832           { WARN_(shell)("No Icongroupresourcedirectory!\n");
 833             goto end_4; /* failure */
 834           }
 835
 836           iconDirCount = icongroupresdir->NumberOfNamedEntries+icongroupresdir->NumberOfIdEntries;
 837
 838           if( nIconIndex == (UINT16)-1 )
 839           { RetPtr[0] = iconDirCount;
 840             goto end_3; /* success */
 841           }
 842
 843           if (nIconIndex >= iconDirCount)
 844           { WARN_(shell)("nIconIndex %d is larger than iconDirCount %d\n",nIconIndex,iconDirCount);
 845             GlobalFree16(hRet);
 846             goto end_4; /* failure */
 847           }
 848
 849           cids = (CURSORICONDIR**)HeapAlloc(GetProcessHeap(),0,n*sizeof(CURSORICONDIR*));
 850
 851           /* caller just wanted the number of entries */
 852           xresent = (PIMAGE_RESOURCE_DIRECTORY_ENTRY)(icongroupresdir+1);
 853
 854           /* assure we don't get too much ... */
 855           if( n > iconDirCount - nIconIndex )
 856           { n = iconDirCount - nIconIndex;
 857           }
 858
 859           /* starting from specified index ... */
 860           xresent = xresent+nIconIndex;
 861
 862           for (i=0;i<n;i++,xresent++)
 863           { CURSORICONDIR       *cid;
 864             PIMAGE_RESOURCE_DIRECTORY   resdir;
 865
 866             /* go down this resource entry, name */
 867             resdir = (PIMAGE_RESOURCE_DIRECTORY)((DWORD)rootresdir+(xresent->u2.s.OffsetToDirectory));
 868
 869             /* default language (0) */
 870             resdir = GetResDirEntryW(resdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 871             igdataent = (PIMAGE_RESOURCE_DATA_ENTRY)resdir;
 872
 873             /* lookup address in mapped image for virtual address */
 874             igdata = NULL;
 875
 876             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 877             { if (igdataent->OffsetToData < pe_sections[j].VirtualAddress)
 878                 continue;
 879               if (igdataent->OffsetToData+igdataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 880                 continue;
 881               igdata = peimage+(igdataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 882             }
 883
 884             if (!igdata)
 885             { WARN_(shell)("no matching real address for icongroup!\n");
 886               goto end_4;       /* failure */
 887             }
 888             /* found */
 889             cid = (CURSORICONDIR*)igdata;
 890             cids[i] = cid;
 891             RetPtr[i] = LookupIconIdFromDirectoryEx(igdata,TRUE,GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON),0);
 892           }
 893
 894           iconresdir=GetResDirEntryW(rootresdir,RT_ICONW,(DWORD)rootresdir,FALSE);
 895
 896           if (!iconresdir)
 897           { WARN_(shell)("No Iconresourcedirectory!\n");
 898             goto end_4; /* failure */
 899           }
 900
 901           for (i=0;i<n;i++)
 902           { PIMAGE_RESOURCE_DIRECTORY   xresdir;
 903             xresdir = GetResDirEntryW(iconresdir,(LPWSTR)(DWORD)RetPtr[i],(DWORD)rootresdir,FALSE);
 904             xresdir = GetResDirEntryW(xresdir,(LPWSTR)0,(DWORD)rootresdir,TRUE);
 905             idataent = (PIMAGE_RESOURCE_DATA_ENTRY)xresdir;
 906             idata = NULL;
 907
 908             /* map virtual to address in image */
 909             for (j=0;j<pe_header->FileHeader.NumberOfSections;j++)
 910             { if (idataent->OffsetToData < pe_sections[j].VirtualAddress)
 911                 continue;
 912               if (idataent->OffsetToData+idataent->Size > pe_sections[j].VirtualAddress+pe_sections[j].SizeOfRawData)
 913                 continue;
 914               idata = peimage+(idataent->OffsetToData-pe_sections[j].VirtualAddress+pe_sections[j].PointerToRawData);
 915             }
 916             if (!idata)
 917             { WARN_(shell)("no matching real address found for icondata!\n");
 918               RetPtr[i]=0;
 919               continue;
 920             }
 921             RetPtr[i] = CreateIconFromResourceEx(idata,idataent->Size,TRUE,0x00030000,GetSystemMetrics(SM_CXICON),GetSystemMetrics(SM_CYICON),0);
 922           }
 923           goto end_3;   /* sucess */
 924         }
 925         goto end_1;     /* return array with icon handles */
 926
 927 /* cleaning up (try & catch would be nicer) */
 928 end_4:  hRet = 0;       /* failure */
 929 end_3:  UnmapViewOfFile(peimage);       /* success */
 930 end_2:  CloseHandle(fmapping);
 931 end_1:  _lclose( hFile);
 932         return hRet;
 933 }
 934
 935 /*************************************************************************
 936  *             ExtractIcon16   (SHELL.34)
 937  */
 938 HICON16 WINAPI ExtractIcon16( HINSTANCE16 hInstance, LPCSTR lpszExeFileName,
 939         UINT16 nIconIndex )
 940 {   TRACE_(shell)("\n");
 941     return ExtractIconA( hInstance, lpszExeFileName, nIconIndex );
 942 }
 943
 944 /*************************************************************************
 945  *             ExtractIconEx16   (SHELL.40)
 946  */
 947 HICON16 WINAPI ExtractIconEx16(
 948         LPCSTR lpszFile, INT16 nIconIndex, HICON16 *phiconLarge,
 949         HICON16 *phiconSmall, UINT16 nIcons
 950 ) {
 951     HICON       *ilarge,*ismall;
 952     UINT16      ret;
 953     int         i;
 954
 955     if (phiconLarge)
 956         ilarge = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 957     else
 958         ilarge = NULL;
 959     if (phiconSmall)
 960         ismall = (HICON*)HeapAlloc(GetProcessHeap(),0,nIcons*sizeof(HICON));
 961     else
 962         ismall = NULL;
 963     ret = ExtractIconExA(lpszFile,nIconIndex,ilarge,ismall,nIcons);
 964     if (ilarge) {
 965         for (i=0;i<nIcons;i++)
 966             phiconLarge[i]=ilarge[i];
 967         HeapFree(GetProcessHeap(),0,ilarge);
 968     }
 969     if (ismall) {
 970         for (i=0;i<nIcons;i++)
 971             phiconSmall[i]=ismall[i];
 972         HeapFree(GetProcessHeap(),0,ismall);
 973     }
 974     return ret;
 975 }
 976
 977 /*************************************************************************
 978  *                              ExtractAssociatedIcon   [SHELL.36]
 979  *
 980  * Return icon for given file (either from file itself or from associated
 981  * executable) and patch parameters if needed.
 982  */
 983 HICON WINAPI ExtractAssociatedIconA(HINSTANCE hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 984 {       TRACE_(shell)("\n");
 985         return ExtractAssociatedIcon16(hInst,lpIconPath,lpiIcon);
 986 }
 987
 988 HICON16 WINAPI ExtractAssociatedIcon16(HINSTANCE16 hInst, LPSTR lpIconPath, LPWORD lpiIcon)
 989 {       HICON16 hIcon;
 990
 991         TRACE_(shell)("\n");
 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_(shell)("\n");
1029
1030   l = strlen(entry);
1031   for( ; *lpEnv ; lpEnv+=strlen(lpEnv)+1 )
1032   { if( lstrncmpiA(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_(shell)("\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_(shell)("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_(shell)("-- 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_(shell)("-- 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_(shell)("%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_(shell)("%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_(shell)("-- unable to install ShellHookProc()!\n");
1176         }
1177
1178         if ( SHELL_hHook )
1179             return ((SHELL_hWnd = hWnd) != 0);
1180         break;
1181
1182     default:
1183         WARN_(shell)("-- unknown code %i\n", uAction );
1184         SHELL_hWnd = 0; /* just in case */
1185     }
1186     return FALSE;
1187 }