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