windows/clipboard.c

   1 /*
   2  * WIN32 clipboard implementation
   3  *
   4  * Copyright 1994 Martin Ayotte
   5  *           1996 Alex Korobka
   6  *           1999 Noel Borthwick
   7  *
   8  * NOTES:
   9  *    This file contains the implementation for the WIN32 Clipboard API
  10  * and Wine's internal clipboard cache.
  11  * The actual contents of the clipboard are held in the clipboard cache.
  12  * The internal implementation talks to a "clipboard driver" to fill or
  13  * expose the cache to the native device. (Currently only the X11 and
  14  * TTY clipboard  driver are available)
  15  *
  16  * TODO:
  17  *
  18  */
  19
  20 #include <stdlib.h>
  21 #include <sys/types.h>
  22 #include <fcntl.h>
  23 #include <unistd.h>
  24 #include <string.h>
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winuser.h"
  30 #include "wine/winuser16.h"
  31 #include "wine/winbase16.h"
  32 #include "heap.h"
  33 #include "user.h"
  34 #include "clipboard.h"
  35 #include "debugtools.h"
  36
  37 DEFAULT_DEBUG_CHANNEL(clipboard);
  38
  39 #define  CF_REGFORMATBASE       0xC000
  40
  41 /**************************************************************************
  42  *        Clipboard context global variables
  43  */
  44
  45 static HANDLE hClipLock   = 0;
  46 static BOOL bCBHasChanged  = FALSE;
  47
  48 HWND hWndClipWindow = 0;          /* window that last opened clipboard */
  49 HWND hWndClipOwner  = 0;          /* current clipboard owner */
  50 HANDLE16 hTaskClipOwner = 0;      /* clipboard owner's task  */
  51 static HWND hWndViewer     = 0;   /* start of viewers chain */
  52
  53 static WORD LastRegFormat = CF_REGFORMATBASE;
  54
  55 /* Clipboard cache initial data.
  56  * WARNING: This data ordering is dependent on the WINE_CLIPFORMAT structure
  57  * declared in clipboard.h
  58  */
  59 WINE_CLIPFORMAT ClipFormats[]  = {
  60     { CF_TEXT, 1, 0, "Text",  0, 0, 0, 0, NULL, &ClipFormats[1]},
  61     { CF_BITMAP, 1, 0, "Bitmap", 0, 0, 0, 0, &ClipFormats[0], &ClipFormats[2]},
  62     { CF_METAFILEPICT, 1, 0, "MetaFile Picture", 0, 0, 0, 0, &ClipFormats[1], &ClipFormats[3]},
  63     { CF_SYLK, 1, 0, "Sylk", 0, 0, 0, 0, &ClipFormats[2], &ClipFormats[4]},
  64     { CF_DIF, 1, 0, "DIF", 0, 0, 0, 0, &ClipFormats[3], &ClipFormats[5]},
  65     { CF_TIFF, 1, 0, "TIFF", 0, 0, 0, 0, &ClipFormats[4], &ClipFormats[6]},
  66     { CF_OEMTEXT, 1, 0, "OEM Text", 0, 0, 0, 0, &ClipFormats[5], &ClipFormats[7]},
  67     { CF_DIB, 1, 0, "DIB", 0, 0, 0, 0, &ClipFormats[6], &ClipFormats[8]},
  68     { CF_PALETTE, 1, 0, "Palette", 0, 0, 0, 0, &ClipFormats[7], &ClipFormats[9]},
  69     { CF_PENDATA, 1, 0, "PenData", 0, 0, 0, 0, &ClipFormats[8], &ClipFormats[10]},
  70     { CF_RIFF, 1, 0, "RIFF", 0, 0, 0, 0, &ClipFormats[9], &ClipFormats[11]},
  71     { CF_WAVE, 1, 0, "Wave", 0, 0, 0, 0, &ClipFormats[10], &ClipFormats[12]},
  72     { CF_UNICODETEXT, 1, 0, "Unicode Text", 0, 0, 0, 0, &ClipFormats[11], &ClipFormats[13]},
  73     { CF_OWNERDISPLAY, 1, 0, "Owner Display", 0, 0, 0, 0, &ClipFormats[12], &ClipFormats[14]},
  74     { CF_DSPTEXT, 1, 0, "DSPText", 0, 0, 0, 0, &ClipFormats[13], &ClipFormats[15]},
  75     { CF_DSPMETAFILEPICT, 1, 0, "DSPMetaFile Picture", 0, 0, 0, 0, &ClipFormats[14], &ClipFormats[16]},
  76     { CF_DSPBITMAP, 1, 0, "DSPBitmap", 0, 0, 0, 0, &ClipFormats[15], &ClipFormats[17]},
  77     { CF_HDROP, 1, 0, "HDROP", 0, 0, 0, 0, &ClipFormats[16], NULL}
  78 };
  79
  80
  81 /**************************************************************************
  82  *                Internal Clipboard implementation methods
  83  **************************************************************************/
  84
  85
  86 /**************************************************************************
  87  *                      CLIPBOARD_LookupFormat
  88  */
  89 static LPWINE_CLIPFORMAT __lookup_format( LPWINE_CLIPFORMAT lpFormat, WORD wID )
  90 {
  91     while(TRUE)
  92     {
  93         if (lpFormat == NULL ||
  94             lpFormat->wFormatID == wID) break;
  95         lpFormat = lpFormat->NextFormat;
  96     }
  97     return lpFormat;
  98 }
  99
 100 LPWINE_CLIPFORMAT CLIPBOARD_LookupFormat( WORD wID )
 101 {
 102   return __lookup_format( ClipFormats, wID );
 103 }
 104
 105 /**************************************************************************
 106  *                      CLIPBOARD_IsLocked
 107  *  Check if the clipboard cache is available to the caller
 108  */
 109 BOOL CLIPBOARD_IsLocked()
 110 {
 111   BOOL bIsLocked = TRUE;
 112   HANDLE16 hTaskCur = GetCurrentTask();
 113
 114   /*
 115    * The clipboard is available:
 116    * 1. if the caller's task has opened the clipboard,
 117    * or
 118    * 2. if the caller is the clipboard owners task, AND is responding to a
 119    *    WM_RENDERFORMAT message.
 120    */
 121   if ( hClipLock == hTaskCur )
 122       bIsLocked = FALSE;
 123
 124   else if ( hTaskCur == hTaskClipOwner )
 125   {
 126       /* Check if we're currently executing inside a window procedure
 127        * called in response to a WM_RENDERFORMAT message. A WM_RENDERFORMAT
 128        * handler is not permitted to open the clipboard since it has been opened
 129        * by another client. However the handler must have access to the
 130        * clipboard in order to update data in response to this message.
 131        */
 132 #if 0
 133       MESSAGEQUEUE *queue = QUEUE_Current();
 134
 135       if ( queue
 136            && queue->smWaiting
 137            && queue->smWaiting->msg == WM_RENDERFORMAT
 138            && queue->smWaiting->hSrcQueue
 139          )
 140         bIsLocked = FALSE;
 141 #else
 142       /* FIXME: queue check no longer possible */
 143       bIsLocked = FALSE;
 144 #endif
 145   }
 146
 147   return bIsLocked;
 148 }
 149
 150 /**************************************************************************
 151  *                      CLIPBOARD_ReleaseOwner
 152  *   Gives up ownership of the clipboard
 153  */
 154 void CLIPBOARD_ReleaseOwner()
 155 {
 156    hWndClipOwner = 0;
 157    hTaskClipOwner = 0;
 158 }
 159
 160 /**************************************************************************
 161  *                      CLIPBOARD_GlobalFreeProc
 162  *
 163  * This is a callback mechanism to allow HGLOBAL data to be released in
 164  * the context of the process which allocated it. We post a WM_TIMER message
 165  * to the owner window(in CLIPBOARD_DeleteRecord) and destroy the data(in idEvent)
 166  * in this WndProc, which is invoked when the apps message loop calls DispatchMessage.
 167  * This technique is discussed in Matt Pietrek's "Under the Hood".
 168  * An article describing the same may be found in MSDN by searching for WM_TIMER.
 169  * Note that this mechanism will probably stop working when WINE supports
 170  * address space separation. When "queue events" are implemented in Wine we
 171  * should switch to using that mechanism, since it is more robust and does not
 172  * require a procedure address to be passed. See the SetWinEventHook API for
 173  * more info on this.
 174  */
 175 VOID CALLBACK CLIPBOARD_GlobalFreeProc( HWND hwnd, UINT uMsg, UINT idEvent, DWORD dwTime )
 176 {
 177     /* idEvent is the HGLOBAL to be deleted */
 178     GlobalFree( (HGLOBAL)idEvent );
 179 }
 180
 181 /**************************************************************************
 182  *                      CLIPBOARD_DeleteRecord
 183  */
 184 void CLIPBOARD_DeleteRecord(LPWINE_CLIPFORMAT lpFormat, BOOL bChange)
 185 {
 186     if( (lpFormat->wFormatID >= CF_GDIOBJFIRST &&
 187          lpFormat->wFormatID <= CF_GDIOBJLAST) || lpFormat->wFormatID == CF_BITMAP
 188             || lpFormat->wFormatID == CF_PALETTE)
 189     {
 190       if (lpFormat->hData32)
 191         DeleteObject(lpFormat->hData32);
 192       if (lpFormat->hData16)
 193         DeleteObject(lpFormat->hData16);
 194     }
 195     else if( lpFormat->wFormatID == CF_METAFILEPICT )
 196     {
 197       if (lpFormat->hData32)
 198       {
 199         DeleteMetaFile( ((METAFILEPICT *)GlobalLock( lpFormat->hData32 ))->hMF );
 200         PostMessageA(hWndClipOwner, WM_TIMER,
 201                      (WPARAM)lpFormat->hData32, (LPARAM)CLIPBOARD_GlobalFreeProc);
 202         if (lpFormat->hDataSrc32)
 203         {
 204           /* Release lpFormat->hData32 in the context of the process which created it.
 205            * See CLIPBOARD_GlobalFreeProc for more details about this technique.
 206            * GlobalFree(lpFormat->hDataSrc32);
 207            */
 208           PostMessageA(hWndClipOwner, WM_TIMER,
 209                        (WPARAM)lpFormat->hDataSrc32, (LPARAM)CLIPBOARD_GlobalFreeProc);
 210         }
 211
 212         if (lpFormat->hData16)
 213           /* HMETAFILE16 and HMETAFILE32 are apparently the same thing,
 214              and a shallow copy is enough to share a METAFILEPICT
 215              structure between 16bit and 32bit clipboards.  The MetaFile
 216              should of course only be deleted once. */
 217           GlobalFree16(lpFormat->hData16);
 218       }
 219       if (lpFormat->hData16)
 220       {
 221         DeleteMetaFile16( ((METAFILEPICT16 *)GlobalLock16( lpFormat->hData16 ))->hMF );
 222         GlobalFree16(lpFormat->hData16);
 223       }
 224     }
 225     else
 226     {
 227       if (lpFormat->hData32)
 228       {
 229         /* Release lpFormat->hData32 in the context of the process which created it.
 230          * See CLIPBOARD_GlobalFreeProc for more details about this technique.
 231          * GlobalFree( lpFormat->hData32 );
 232          */
 233         PostMessageA(hWndClipOwner, WM_TIMER,
 234                      (WPARAM)lpFormat->hData32, (LPARAM)CLIPBOARD_GlobalFreeProc);
 235       }
 236       if (lpFormat->hDataSrc32)
 237       {
 238         /* Release lpFormat->hData32 in the context of the process which created it.
 239          * See CLIPBOARD_GlobalFreeProc for more details about this technique.
 240          * GlobalFree(lpFormat->hDataSrc32);
 241          */
 242         PostMessageA(hWndClipOwner, WM_TIMER,
 243                      (WPARAM)lpFormat->hDataSrc32, (LPARAM)CLIPBOARD_GlobalFreeProc);
 244       }
 245       if (lpFormat->hData16)
 246         GlobalFree16(lpFormat->hData16);
 247     }
 248
 249     lpFormat->wDataPresent = 0;
 250     lpFormat->hData16 = 0;
 251     lpFormat->hData32 = 0;
 252     lpFormat->hDataSrc32 = 0;
 253     lpFormat->drvData = 0;
 254
 255     if( bChange ) bCBHasChanged = TRUE;
 256 }
 257
 258 /**************************************************************************
 259  *                      CLIPBOARD_EmptyCache
 260  */
 261 void CLIPBOARD_EmptyCache( BOOL bChange )
 262 {
 263     LPWINE_CLIPFORMAT lpFormat = ClipFormats;
 264
 265     while(lpFormat)
 266     {
 267         if ( lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32 )
 268              CLIPBOARD_DeleteRecord( lpFormat, bChange );
 269
 270         lpFormat = lpFormat->NextFormat;
 271     }
 272 }
 273
 274 /**************************************************************************
 275  *                      CLIPBOARD_IsPresent
 276  */
 277 BOOL CLIPBOARD_IsPresent(WORD wFormat)
 278 {
 279     /* special case */
 280
 281     if( wFormat == CF_TEXT || wFormat == CF_OEMTEXT || wFormat == CF_UNICODETEXT )
 282         return ClipFormats[CF_TEXT-1].wDataPresent ||
 283                ClipFormats[CF_OEMTEXT-1].wDataPresent ||
 284                ClipFormats[CF_UNICODETEXT-1].wDataPresent;
 285     else
 286     {
 287         LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
 288         if( lpFormat ) return (lpFormat->wDataPresent);
 289     }
 290     return FALSE;
 291 }
 292
 293 /**************************************************************************
 294  *                      CLIPBOARD_IsCacheRendered
 295  *  Checks if any data needs to be rendered to the clipboard cache
 296  *  RETURNS:
 297  *    TRUE  - All clipboard data is available in the cache
 298  *    FALSE - Some data is marked for delayed render and needs rendering
 299  */
 300 BOOL CLIPBOARD_IsCacheRendered()
 301 {
 302     LPWINE_CLIPFORMAT lpFormat = ClipFormats;
 303
 304     /* check if all formats were rendered */
 305     while(lpFormat)
 306     {
 307         if( lpFormat->wDataPresent && !lpFormat->hData16 && !lpFormat->hData32 )
 308             return FALSE;
 309
 310         lpFormat = lpFormat->NextFormat;
 311     }
 312
 313     return TRUE;
 314 }
 315
 316
 317 /**************************************************************************
 318  *                      CLIPBOARD_IsMemoryObject
 319  *  Tests if the clipboard format specifies a memory object
 320  */
 321 BOOL CLIPBOARD_IsMemoryObject( WORD wFormat )
 322 {
 323     switch(wFormat)
 324     {
 325         case CF_BITMAP:
 326         case CF_METAFILEPICT:
 327         case CF_DSPTEXT:
 328         case CF_ENHMETAFILE:
 329         case CF_HDROP:
 330         case CF_PALETTE:
 331         case CF_PENDATA:
 332             return FALSE;
 333         default:
 334             return TRUE;
 335      }
 336 }
 337
 338 /***********************************************************************
 339  * CLIPBOARD_GlobalDupMem( HGLOBAL )
 340  * Helper method to duplicate an HGLOBAL chunk of memory into shared memory
 341  */
 342 HGLOBAL CLIPBOARD_GlobalDupMem( HGLOBAL hGlobalSrc )
 343 {
 344     HGLOBAL hGlobalDest;
 345     PVOID pGlobalSrc, pGlobalDest;
 346     DWORD cBytes;
 347
 348     if ( !hGlobalSrc )
 349       return 0;
 350
 351     cBytes = GlobalSize(hGlobalSrc);
 352     if ( 0 == cBytes )
 353       return 0;
 354
 355     /* Turn on the DDESHARE and _MOVEABLE flags explicitly */
 356     hGlobalDest = GlobalAlloc( GlobalFlags(hGlobalSrc) | GMEM_DDESHARE | GMEM_MOVEABLE,
 357                                cBytes );
 358     if ( !hGlobalDest )
 359       return 0;
 360
 361     pGlobalSrc = GlobalLock(hGlobalSrc);
 362     pGlobalDest = GlobalLock(hGlobalDest);
 363     if ( !pGlobalSrc || !pGlobalDest )
 364       return 0;
 365
 366     memcpy(pGlobalDest, pGlobalSrc, cBytes);
 367
 368     GlobalUnlock(hGlobalSrc);
 369     GlobalUnlock(hGlobalDest);
 370
 371     return hGlobalDest;
 372 }
 373
 374 /**************************************************************************
 375  *                      CLIPBOARD_GetFormatName
 376  *  Gets the format name associated with an ID
 377  */
 378 char * CLIPBOARD_GetFormatName(UINT wFormat)
 379 {
 380     LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
 381     return (lpFormat) ? lpFormat->Name : NULL;
 382 }
 383
 384
 385 /**************************************************************************
 386  *                      CLIPBOARD_RenderFormat
 387  */
 388 static BOOL CLIPBOARD_RenderFormat(LPWINE_CLIPFORMAT lpFormat)
 389 {
 390   /*
 391    * If WINE is not the selection owner, and the format is available
 392    * we must ask the driver to render the data to the clipboard cache.
 393    */
 394   TRACE("enter format=%d\n", lpFormat->wFormatID);
 395   if ( !USER_Driver.pIsSelectionOwner()
 396        && USER_Driver.pIsClipboardFormatAvailable( lpFormat->wFormatID ) )
 397   {
 398     if ( !USER_Driver.pGetClipboardData( lpFormat->wFormatID ) )
 399       return FALSE;
 400   }
 401   /*
 402    * If Wine owns the clipboard, and the data is marked for delayed render,
 403    * render it now.
 404    */
 405   else if( lpFormat->wDataPresent && !lpFormat->hData16 && !lpFormat->hData32 )
 406   {
 407     if( IsWindow(hWndClipOwner) )
 408     {
 409       /* Send a WM_RENDERFORMAT message to notify the owner to render the
 410        * data requested into the clipboard.
 411        */
 412       TRACE("Sending WM_RENDERFORMAT message\n");
 413       SendMessageW( hWndClipOwner, WM_RENDERFORMAT, (WPARAM)lpFormat->wFormatID, 0 );
 414     }
 415     else
 416     {
 417       WARN("\thWndClipOwner (%04x) is lost!\n",
 418            hWndClipOwner);
 419       CLIPBOARD_ReleaseOwner();
 420       lpFormat->wDataPresent = 0;
 421       return FALSE;
 422     }
 423   }
 424
 425   return (lpFormat->hData16 || lpFormat->hData32) ? TRUE : FALSE;
 426 }
 427
 428 /**************************************************************************
 429  *                      CLIPBOARD_ConvertText
 430  * Returns number of required/converted characters - not bytes!
 431  */
 432 static INT CLIPBOARD_ConvertText(WORD src_fmt, void const *src, INT src_size,
 433                                  WORD dst_fmt, void *dst, INT dst_size)
 434 {
 435     UINT cp;
 436
 437     if(src_fmt == CF_UNICODETEXT)
 438     {
 439         switch(dst_fmt)
 440         {
 441         case CF_TEXT:
 442             cp = CP_ACP;
 443             break;
 444         case CF_OEMTEXT:
 445             cp = CP_OEMCP;
 446             break;
 447         default:
 448             return 0;
 449         }
 450         return WideCharToMultiByte(cp, 0, src, src_size, dst, dst_size, NULL, NULL);
 451     }
 452
 453     if(dst_fmt == CF_UNICODETEXT)
 454     {
 455         switch(src_fmt)
 456         {
 457         case CF_TEXT:
 458             cp = CP_ACP;
 459             break;
 460         case CF_OEMTEXT:
 461             cp = CP_OEMCP;
 462             break;
 463         default:
 464             return 0;
 465         }
 466         return MultiByteToWideChar(cp, 0, src, src_size, dst, dst_size);
 467     }
 468
 469     if(!dst_size) return src_size;
 470
 471     if(dst_size > src_size) dst_size = src_size;
 472
 473     if(src_fmt == CF_TEXT )
 474         CharToOemBuffA(src, dst, dst_size);
 475     else
 476         OemToCharBuffA(src, dst, dst_size);
 477
 478     return dst_size;
 479 }
 480
 481 /**************************************************************************
 482  *                      CLIPBOARD_RenderText
 483  *
 484  * Renders text to the clipboard buffer converting between UNIX and DOS formats.
 485  *
 486  * RETURNS: pointer to the WINE_CLIPFORMAT if successful, NULL otherwise
 487  *
 488  * FIXME: Should be a pair of driver functions that convert between OEM text and Windows.
 489  *
 490  */
 491 static LPWINE_CLIPFORMAT CLIPBOARD_RenderText( UINT wFormat )
 492 {
 493     LPWINE_CLIPFORMAT lpSource = ClipFormats;
 494     LPWINE_CLIPFORMAT lpTarget = NULL;
 495     BOOL foundData = FALSE;
 496
 497     /* Asked for CF_TEXT */
 498     if( wFormat == CF_TEXT)
 499     {
 500         if(ClipFormats[CF_TEXT-1].wDataPresent)
 501         {
 502             lpSource = &ClipFormats[CF_TEXT-1];
 503             lpTarget = &ClipFormats[CF_TEXT-1];
 504             foundData = TRUE;
 505             TRACE("\t TEXT -> TEXT\n");
 506         }
 507         else if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
 508         {
 509             /* Convert UNICODETEXT -> TEXT */
 510             lpSource = &ClipFormats[CF_UNICODETEXT-1];
 511             lpTarget = &ClipFormats[CF_TEXT-1];
 512             foundData = TRUE;
 513             TRACE("\tUNICODETEXT -> TEXT\n");
 514         }
 515         else if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
 516         {
 517             /* Convert OEMTEXT -> TEXT */
 518             lpSource = &ClipFormats[CF_OEMTEXT-1];
 519             lpTarget = &ClipFormats[CF_TEXT-1];
 520             foundData = TRUE;
 521             TRACE("\tOEMTEXT -> TEXT\n");
 522         }
 523     }
 524     /* Asked for CF_OEMTEXT  */
 525     else if( wFormat == CF_OEMTEXT)
 526     {
 527         if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
 528         {
 529             lpSource = &ClipFormats[CF_OEMTEXT-1];
 530             lpTarget = &ClipFormats[CF_OEMTEXT-1];
 531             foundData = TRUE;
 532             TRACE("\tOEMTEXT -> OEMTEXT\n");
 533         }
 534         else if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
 535         {
 536             /* Convert UNICODETEXT -> OEMTEXT */
 537             lpSource = &ClipFormats[CF_UNICODETEXT-1];
 538             lpTarget = &ClipFormats[CF_OEMTEXT-1];
 539             foundData = TRUE;
 540             TRACE("\tUNICODETEXT -> OEMTEXT\n");
 541         }
 542         else if(ClipFormats[CF_TEXT-1].wDataPresent)
 543         {
 544             /* Convert TEXT -> OEMTEXT */
 545             lpSource = &ClipFormats[CF_TEXT-1];
 546             lpTarget = &ClipFormats[CF_OEMTEXT-1];
 547             foundData = TRUE;
 548             TRACE("\tTEXT -> OEMTEXT\n");
 549         }
 550     }
 551     /* Asked for CF_UNICODETEXT */
 552     else if( wFormat == CF_UNICODETEXT )
 553     {
 554         if(ClipFormats[CF_UNICODETEXT-1].wDataPresent)
 555         {
 556             lpSource = &ClipFormats[CF_UNICODETEXT-1];
 557             lpTarget = &ClipFormats[CF_UNICODETEXT-1];
 558             foundData = TRUE;
 559             TRACE("\tUNICODETEXT -> UNICODETEXT\n");
 560         }
 561         else if(ClipFormats[CF_TEXT-1].wDataPresent)
 562         {
 563             /* Convert TEXT -> UNICODETEXT */
 564             lpSource = &ClipFormats[CF_TEXT-1];
 565             lpTarget = &ClipFormats[CF_UNICODETEXT-1];
 566             foundData = TRUE;
 567             TRACE("\tTEXT -> UNICODETEXT\n");
 568         }
 569         else if(ClipFormats[CF_OEMTEXT-1].wDataPresent)
 570         {
 571             /* Convert OEMTEXT -> UNICODETEXT */
 572             lpSource = &ClipFormats[CF_OEMTEXT-1];
 573             lpTarget = &ClipFormats[CF_UNICODETEXT-1];
 574             foundData = TRUE;
 575             TRACE("\tOEMTEXT -> UNICODETEXT\n");
 576         }
 577     }
 578     if (!foundData)
 579     {
 580         if ((wFormat == CF_TEXT) || (wFormat == CF_OEMTEXT))
 581         {
 582             lpSource = &ClipFormats[CF_UNICODETEXT-1];
 583             lpTarget = __lookup_format( ClipFormats, wFormat );
 584         }
 585         else
 586         {
 587             lpSource = __lookup_format( ClipFormats, wFormat );
 588             lpTarget = lpSource;
 589         }
 590     }
 591
 592     /* First render the source text format */
 593     if ( !lpSource || !CLIPBOARD_RenderFormat(lpSource) ) return NULL;
 594
 595     /* Convert to the desired target text format, if necessary */
 596     if( lpTarget != lpSource && !lpTarget->hData16 && !lpTarget->hData32 )
 597     {
 598         INT src_chars, dst_chars, alloc_size;
 599         LPCSTR lpstrS;
 600         LPSTR  lpstrT;
 601
 602         if (lpSource->hData32)
 603         {
 604           lpstrS = (LPSTR)GlobalLock(lpSource->hData32);
 605         }
 606         else
 607         {
 608           lpstrS = (LPSTR)GlobalLock16(lpSource->hData16);
 609         }
 610
 611         if( !lpstrS ) return NULL;
 612
 613         /* Text always NULL terminated */
 614         if(lpSource->wFormatID == CF_UNICODETEXT)
 615             src_chars = strlenW((LPCWSTR)lpstrS)+1;
 616         else
 617             src_chars = strlen(lpstrS)+1;
 618
 619         /* Calculate number of characters in the destination buffer */
 620         dst_chars = CLIPBOARD_ConvertText(lpSource->wFormatID, lpstrS, src_chars,
 621                                      lpTarget->wFormatID, NULL, 0);
 622         if(!dst_chars) return NULL;
 623
 624         TRACE("\tconverting from '%s' to '%s', %i chars\n",
 625                 lpSource->Name, lpTarget->Name, src_chars);
 626
 627         /* Convert characters to bytes */
 628         if(lpTarget->wFormatID == CF_UNICODETEXT)
 629             alloc_size = dst_chars * sizeof(WCHAR);
 630         else
 631             alloc_size = dst_chars;
 632
 633         lpTarget->hData32 = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE, alloc_size);
 634         lpstrT = (LPSTR)GlobalLock(lpTarget->hData32);
 635
 636         if( lpstrT )
 637         {
 638             CLIPBOARD_ConvertText(lpSource->wFormatID, lpstrS, src_chars,
 639                                   lpTarget->wFormatID, lpstrT, dst_chars);
 640             GlobalUnlock(lpTarget->hData32);
 641         }
 642         else
 643             lpTarget->hData32 = 0;
 644
 645         /* Unlock source */
 646         if (lpSource->hData32)
 647           GlobalUnlock(lpSource->hData32);
 648         else
 649           GlobalUnlock16(lpSource->hData16);
 650     }
 651
 652     return (lpTarget->hData16 || lpTarget->hData32) ? lpTarget : NULL;
 653 }
 654
 655 /**************************************************************************
 656  *            CLIPBOARD_EnumClipboardFormats   (internal)
 657  */
 658 static UINT CLIPBOARD_EnumClipboardFormats( UINT wFormat )
 659 {
 660     LPWINE_CLIPFORMAT lpFormat = ClipFormats;
 661     BOOL bFormatPresent;
 662
 663     if (wFormat == 0) /* start from the beginning */
 664         lpFormat = ClipFormats;
 665     else
 666     {
 667         /* walk up to the specified format record */
 668
 669         if( !(lpFormat = __lookup_format( lpFormat, wFormat )) )
 670             return 0;
 671         lpFormat = lpFormat->NextFormat; /* right */
 672     }
 673
 674     while(TRUE)
 675     {
 676         if (lpFormat == NULL) return 0;
 677
 678         if(CLIPBOARD_IsPresent(lpFormat->wFormatID))
 679             break;
 680
 681         /* Query the driver if not yet in the cache */
 682         if (!USER_Driver.pIsSelectionOwner())
 683         {
 684             if(lpFormat->wFormatID == CF_UNICODETEXT ||
 685                lpFormat->wFormatID == CF_TEXT ||
 686                lpFormat->wFormatID == CF_OEMTEXT)
 687             {
 688                 if(USER_Driver.pIsClipboardFormatAvailable(CF_UNICODETEXT) ||
 689                    USER_Driver.pIsClipboardFormatAvailable(CF_TEXT) ||
 690                    USER_Driver.pIsClipboardFormatAvailable(CF_OEMTEXT))
 691                     bFormatPresent = TRUE;
 692                 else
 693                     bFormatPresent = FALSE;
 694             }
 695             else
 696                 bFormatPresent = USER_Driver.pIsClipboardFormatAvailable(lpFormat->wFormatID);
 697
 698             if(bFormatPresent)
 699                 break;
 700         }
 701
 702         lpFormat = lpFormat->NextFormat;
 703     }
 704
 705     TRACE("Next available format %d\n", lpFormat->wFormatID);
 706
 707     return lpFormat->wFormatID;
 708 }
 709
 710
 711 /**************************************************************************
 712  *                WIN32 Clipboard implementation
 713  **************************************************************************/
 714
 715 /**************************************************************************
 716  *              OpenClipboard (USER.137)
 717  */
 718 BOOL16 WINAPI OpenClipboard16( HWND16 hWnd )
 719 {
 720     return OpenClipboard( hWnd );
 721 }
 722
 723
 724 /**************************************************************************
 725  *              OpenClipboard (USER32.@)
 726  *
 727  * Note: Netscape uses NULL hWnd to open the clipboard.
 728  */
 729 BOOL WINAPI OpenClipboard( HWND hWnd )
 730 {
 731     BOOL bRet;
 732
 733     TRACE("(%04x)...\n", hWnd);
 734
 735     if (!hClipLock)
 736     {
 737         hClipLock = GetCurrentTask();
 738
 739         /* Save current user of the clipboard */
 740         hWndClipWindow = hWnd;
 741         bCBHasChanged = FALSE;
 742         bRet = TRUE;
 743     }
 744     else bRet = FALSE;
 745
 746     TRACE("   returning %i\n", bRet);
 747     return bRet;
 748 }
 749
 750
 751 /**************************************************************************
 752  *              CloseClipboard (USER.138)
 753  */
 754 BOOL16 WINAPI CloseClipboard16(void)
 755 {
 756     return CloseClipboard();
 757 }
 758
 759
 760 /**************************************************************************
 761  *              CloseClipboard (USER32.@)
 762  */
 763 BOOL WINAPI CloseClipboard(void)
 764 {
 765     TRACE("()\n");
 766
 767     if (hClipLock == GetCurrentTask())
 768     {
 769         hWndClipWindow = 0;
 770
 771         if (bCBHasChanged && hWndViewer) SendMessageW( hWndViewer, WM_DRAWCLIPBOARD, 0, 0 );
 772         hClipLock = 0;
 773     }
 774     return TRUE;
 775 }
 776
 777
 778 /**************************************************************************
 779  *              EmptyClipboard (USER.139)
 780  */
 781 BOOL16 WINAPI EmptyClipboard16(void)
 782 {
 783     return EmptyClipboard();
 784 }
 785
 786
 787 /**************************************************************************
 788  *              EmptyClipboard (USER32.@)
 789  *  Empties and acquires ownership of the clipboard
 790  */
 791 BOOL WINAPI EmptyClipboard(void)
 792 {
 793     TRACE("()\n");
 794
 795     if (hClipLock != GetCurrentTask())
 796     {
 797         WARN("Clipboard not opened by calling task!\n");
 798         return FALSE;
 799     }
 800
 801     /* destroy private objects */
 802
 803     if (hWndClipOwner) SendMessageW( hWndClipOwner, WM_DESTROYCLIPBOARD, 0, 0 );
 804
 805     /* empty the cache */
 806     CLIPBOARD_EmptyCache(TRUE);
 807
 808     /* Assign ownership of the clipboard to the current client */
 809     hWndClipOwner = hWndClipWindow;
 810
 811     /* Save the current task */
 812     hTaskClipOwner = GetCurrentTask();
 813
 814     /* Tell the driver to acquire the selection */
 815     USER_Driver.pAcquireClipboard();
 816
 817     return TRUE;
 818 }
 819
 820
 821 /**************************************************************************
 822  *              GetClipboardOwner (USER.140)
 823  *  FIXME: Can't return the owner if the clipbard is owned by an external app
 824  */
 825 HWND16 WINAPI GetClipboardOwner16(void)
 826 {
 827     TRACE("()\n");
 828     return hWndClipOwner;
 829 }
 830
 831
 832 /**************************************************************************
 833  *              GetClipboardOwner (USER32.@)
 834  *  FIXME: Can't return the owner if the clipbard is owned by an external app
 835  */
 836 HWND WINAPI GetClipboardOwner(void)
 837 {
 838     TRACE("()\n");
 839     return hWndClipOwner;
 840 }
 841
 842
 843 /**************************************************************************
 844  *              SetClipboardData (USER.141)
 845  */
 846 HANDLE16 WINAPI SetClipboardData16( UINT16 wFormat, HANDLE16 hData )
 847 {
 848     LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
 849
 850     TRACE("(%04X, %04x) !\n", wFormat, hData);
 851
 852     /* NOTE: If the hData is zero and current owner doesn't match
 853      * the window that opened the clipboard then this application
 854      * is screwed because WM_RENDERFORMAT will go to the owner.
 855      * (to become the owner it must call EmptyClipboard() before
 856      *  adding new data).
 857      */
 858
 859     if( CLIPBOARD_IsLocked() || !lpFormat ||
 860         (!hData && (!hWndClipOwner || (hWndClipOwner != hWndClipWindow))) )
 861     {
 862         WARN("Invalid hData or clipboard not opened by calling task!\n");
 863         return 0;
 864     }
 865
 866     /* Pass on the request to the driver */
 867     USER_Driver.pSetClipboardData(wFormat);
 868
 869     if ( lpFormat->wDataPresent || lpFormat->hData16 || lpFormat->hData32 )
 870     {
 871         CLIPBOARD_DeleteRecord(lpFormat, TRUE);
 872
 873         /* delete existing CF_UNICODETEXT/CF_TEXT/CF_OEMTEXT aliases */
 874         if(wFormat == CF_UNICODETEXT)
 875         {
 876             CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
 877             CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
 878         }
 879         else if(wFormat == CF_TEXT)
 880         {
 881             CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
 882             CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
 883         }
 884         else if(wFormat == CF_OEMTEXT)
 885         {
 886             CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
 887             CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
 888         }
 889     }
 890
 891     bCBHasChanged = TRUE;
 892     lpFormat->wDataPresent = 1;
 893     lpFormat->hData16 = hData;          /* 0 is legal, see WM_RENDERFORMAT */
 894     lpFormat->hData32 = 0;
 895
 896     return lpFormat->hData16;
 897 }
 898
 899
 900 /**************************************************************************
 901  *              SetClipboardData (USER32.@)
 902  */
 903 HANDLE WINAPI SetClipboardData( UINT wFormat, HANDLE hData )
 904 {
 905     LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
 906
 907     TRACE("(%08X, %08x) !\n", wFormat, hData);
 908
 909     /* NOTE: If the hData is zero and current owner doesn't match
 910      * the window that opened the clipboard then this application
 911      * is screwed because WM_RENDERFORMAT will go to the owner.
 912      * (to become the owner it must call EmptyClipboard() before
 913      *  adding new data).
 914      */
 915
 916     if( CLIPBOARD_IsLocked() || !lpFormat ||
 917         (!hData && (!hWndClipOwner || (hWndClipOwner != hWndClipWindow))) )
 918     {
 919         WARN("Invalid hData or clipboard not opened by calling task!\n");
 920         return 0;
 921     }
 922
 923     /* Tell the driver to acquire the selection */
 924     USER_Driver.pAcquireClipboard();
 925
 926     if ( lpFormat->wDataPresent &&
 927          (lpFormat->hData16 || lpFormat->hData32) )
 928     {
 929         CLIPBOARD_DeleteRecord(lpFormat, TRUE);
 930
 931         /* delete existing CF_UNICODETEXT/CF_TEXT/CF_OEMTEXT aliases */
 932         if(wFormat == CF_UNICODETEXT)
 933         {
 934             CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
 935             CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
 936         }
 937         else if(wFormat == CF_TEXT)
 938         {
 939             CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
 940             CLIPBOARD_DeleteRecord(&ClipFormats[CF_OEMTEXT-1], TRUE);
 941         }
 942         else if(wFormat == CF_OEMTEXT)
 943         {
 944             CLIPBOARD_DeleteRecord(&ClipFormats[CF_UNICODETEXT-1], TRUE);
 945             CLIPBOARD_DeleteRecord(&ClipFormats[CF_TEXT-1], TRUE);
 946         }
 947     }
 948
 949     bCBHasChanged = TRUE;
 950     lpFormat->wDataPresent = 1;
 951     lpFormat->hDataSrc32 = hData;  /* Save the source handle */
 952
 953     /*
 954      * Make a shared duplicate if the memory is not shared
 955      * TODO: What should be done for non-memory objects
 956      */
 957     if ( CLIPBOARD_IsMemoryObject(wFormat) && hData && !(GlobalFlags(hData) & GMEM_DDESHARE) )
 958         lpFormat->hData32 = CLIPBOARD_GlobalDupMem( hData );
 959     else
 960         lpFormat->hData32 = hData;          /* 0 is legal, see WM_RENDERFORMAT */
 961
 962     lpFormat->hData16 = 0;
 963
 964     return lpFormat->hData32;   /* Should we return lpFormat->hDataSrc32 */
 965 }
 966
 967
 968 /**************************************************************************
 969  *              GetClipboardData (USER.142)
 970  */
 971 HANDLE16 WINAPI GetClipboardData16( UINT16 wFormat )
 972 {
 973     LPWINE_CLIPFORMAT lpRender = ClipFormats;
 974
 975     TRACE("(%04X)\n", wFormat);
 976
 977     if (CLIPBOARD_IsLocked())
 978     {
 979         WARN("Clipboard not opened by calling task!\n");
 980         return 0;
 981     }
 982
 983     if( wFormat == CF_UNICODETEXT || wFormat == CF_TEXT || wFormat == CF_OEMTEXT )
 984     {
 985         lpRender = CLIPBOARD_RenderText(wFormat);
 986         if ( !lpRender ) return 0;
 987     }
 988     else
 989     {
 990         lpRender = __lookup_format( ClipFormats, wFormat );
 991         if( !lpRender || !CLIPBOARD_RenderFormat(lpRender) ) return 0;
 992     }
 993
 994     /* Convert between 32 -> 16 bit data, if necessary */
 995     if( lpRender->hData32 && !lpRender->hData16
 996         && CLIPBOARD_IsMemoryObject(wFormat) )
 997     {
 998       int size;
 999       if( lpRender->wFormatID == CF_METAFILEPICT )
1000         size = sizeof( METAFILEPICT16 );
1001       else
1002           size = GlobalSize(lpRender->hData32);
1003
1004       lpRender->hData16 = GlobalAlloc16(GMEM_ZEROINIT, size);
1005       if( !lpRender->hData16 )
1006         ERR("(%04X) -- not enough memory in 16b heap\n", wFormat);
1007       else
1008       {
1009         if( lpRender->wFormatID == CF_METAFILEPICT )
1010         {
1011           FIXME("\timplement function CopyMetaFilePict32to16\n");
1012           FIXME("\tin the appropriate file.\n");
1013   #ifdef SOMEONE_IMPLEMENTED_ME
1014           CopyMetaFilePict32to16( GlobalLock16(lpRender->hData16),
1015                                   GlobalLock(lpRender->hData32) );
1016   #endif
1017         }
1018         else
1019         {
1020           memcpy( GlobalLock16(lpRender->hData16),
1021                   GlobalLock(lpRender->hData32),
1022                   size );
1023         }
1024         GlobalUnlock16(lpRender->hData16);
1025         GlobalUnlock(lpRender->hData32);
1026       }
1027     }
1028
1029     TRACE("\treturning %04x (type %i)\n",
1030                               lpRender->hData16, lpRender->wFormatID);
1031     return lpRender->hData16;
1032 }
1033
1034
1035 /**************************************************************************
1036  *              GetClipboardData (USER32.@)
1037  */
1038 HANDLE WINAPI GetClipboardData( UINT wFormat )
1039 {
1040     LPWINE_CLIPFORMAT lpRender = ClipFormats;
1041
1042     TRACE("(%08X)\n", wFormat);
1043
1044     if (CLIPBOARD_IsLocked())
1045     {
1046         WARN("Clipboard not opened by calling task!\n");
1047         return 0;
1048     }
1049
1050     if( wFormat == CF_UNICODETEXT || wFormat == CF_TEXT || wFormat == CF_OEMTEXT )
1051     {
1052         lpRender = CLIPBOARD_RenderText(wFormat);
1053         if ( !lpRender ) return 0;
1054     }
1055     else
1056     {
1057         lpRender = __lookup_format( ClipFormats, wFormat );
1058         if( !lpRender || !CLIPBOARD_RenderFormat(lpRender) ) return 0;
1059     }
1060
1061     /* Convert between 16 -> 32 bit data, if necessary */
1062     if( lpRender->hData16 && !lpRender->hData32
1063         && CLIPBOARD_IsMemoryObject(wFormat) )
1064     {
1065       int size;
1066       if( lpRender->wFormatID == CF_METAFILEPICT )
1067         size = sizeof( METAFILEPICT );
1068       else
1069         size = GlobalSize16(lpRender->hData16);
1070       lpRender->hData32 = GlobalAlloc(GMEM_ZEROINIT | GMEM_MOVEABLE | GMEM_DDESHARE,
1071                                       size);
1072       if( lpRender->wFormatID == CF_METAFILEPICT )
1073       {
1074         FIXME("\timplement function CopyMetaFilePict16to32\n");
1075         FIXME("\tin the appropriate file.\n");
1076 #ifdef SOMEONE_IMPLEMENTED_ME
1077         CopyMetaFilePict16to32( GlobalLock16(lpRender->hData32),
1078                                 GlobalLock(lpRender->hData16) );
1079 #endif
1080       }
1081       else
1082       {
1083         memcpy( GlobalLock(lpRender->hData32),
1084                 GlobalLock16(lpRender->hData16),
1085                 size );
1086       }
1087       GlobalUnlock(lpRender->hData32);
1088       GlobalUnlock16(lpRender->hData16);
1089     }
1090
1091     TRACE("\treturning %04x (type %i)\n",
1092                               lpRender->hData32, lpRender->wFormatID);
1093     return lpRender->hData32;
1094 }
1095
1096
1097 /**************************************************************************
1098  *              CountClipboardFormats (USER.143)
1099  */
1100 INT16 WINAPI CountClipboardFormats16(void)
1101 {
1102     return CountClipboardFormats();
1103 }
1104
1105
1106 /**************************************************************************
1107  *              CountClipboardFormats (USER32.@)
1108  */
1109 INT WINAPI CountClipboardFormats(void)
1110 {
1111     INT FormatCount = 0;
1112     LPWINE_CLIPFORMAT lpFormat = ClipFormats;
1113
1114     TRACE("()\n");
1115
1116     while(TRUE)
1117     {
1118         if (lpFormat == NULL) break;
1119
1120         if( lpFormat->wFormatID != CF_TEXT ) /* Don't count CF_TEXT */
1121         {
1122           /*
1123            * The format is available if either:
1124            * 1. The data is already in the cache.
1125            * 2. The selection is not owned by us(WINE) and the data is
1126            *    available to the clipboard driver.
1127            */
1128           if ( lpFormat->wDataPresent ||
1129                ( !USER_Driver.pIsSelectionOwner()
1130                  && USER_Driver.pIsClipboardFormatAvailable( lpFormat->wFormatID ) ) )
1131           {
1132               TRACE("\tdata found for format 0x%04x(%s)\n",
1133                     lpFormat->wFormatID, CLIPBOARD_GetFormatName(lpFormat->wFormatID));
1134               FormatCount++;
1135           }
1136         }
1137
1138         lpFormat = lpFormat->NextFormat;
1139     }
1140
1141     /* these are equivalent, adjust the total */
1142     FormatCount += (ClipFormats[CF_UNICODETEXT-1].wDataPresent ||
1143                     ClipFormats[CF_TEXT-1].wDataPresent ||
1144                     ClipFormats[CF_OEMTEXT-1].wDataPresent) ? 1 : 0;
1145
1146     TRACE("\ttotal %d\n", FormatCount);
1147     return FormatCount;
1148 }
1149
1150 /**************************************************************************
1151  *              EnumClipboardFormats (USER.144)
1152  */
1153 UINT16 WINAPI EnumClipboardFormats16( UINT16 wFormat )
1154 {
1155     return EnumClipboardFormats( wFormat );
1156 }
1157
1158
1159 /**************************************************************************
1160  *              EnumClipboardFormats (USER32.@)
1161  */
1162 UINT WINAPI EnumClipboardFormats( UINT wFormat )
1163 {
1164     TRACE("(%04X)\n", wFormat);
1165
1166     if (CLIPBOARD_IsLocked())
1167     {
1168         WARN("Clipboard not opened by calling task!\n");
1169         return 0;
1170     }
1171
1172     return CLIPBOARD_EnumClipboardFormats(wFormat);
1173 }
1174
1175
1176 /**************************************************************************
1177  *              RegisterClipboardFormatA (USER32.@)
1178  */
1179 UINT WINAPI RegisterClipboardFormatA( LPCSTR FormatName )
1180 {
1181     LPWINE_CLIPFORMAT lpNewFormat;
1182     LPWINE_CLIPFORMAT lpFormat = ClipFormats;
1183
1184     if (FormatName == NULL) return 0;
1185
1186     TRACE("('%s') !\n", FormatName);
1187
1188     /* walk format chain to see if it's already registered */
1189
1190     while(TRUE)
1191     {
1192         if ( !strcmp(lpFormat->Name,FormatName) )
1193         {
1194              lpFormat->wRefCount++;
1195              return lpFormat->wFormatID;
1196         }
1197
1198         if ( lpFormat->NextFormat == NULL ) break;
1199
1200         lpFormat = lpFormat->NextFormat;
1201     }
1202
1203     /* allocate storage for new format entry */
1204
1205     lpNewFormat = (LPWINE_CLIPFORMAT)HeapAlloc(GetProcessHeap(), 0, sizeof(WINE_CLIPFORMAT));
1206     if(lpNewFormat == NULL) {
1207         WARN("No more memory for a new format!\n");
1208         return 0;
1209     }
1210     lpFormat->NextFormat = lpNewFormat;
1211     lpNewFormat->wFormatID = LastRegFormat;
1212     lpNewFormat->wRefCount = 1;
1213
1214     if (!(lpNewFormat->Name = HeapAlloc(GetProcessHeap(), 0, strlen(FormatName)+1 )))
1215     {
1216         WARN("No more memory for the new format name!\n");
1217         HeapFree(GetProcessHeap(), 0, lpNewFormat);
1218         return 0;
1219     }
1220     strcpy( lpNewFormat->Name, FormatName );
1221
1222     lpNewFormat->wDataPresent = 0;
1223     lpNewFormat->hData16 = 0;
1224     lpNewFormat->hDataSrc32 = 0;
1225     lpNewFormat->hData32 = 0;
1226     lpNewFormat->drvData = 0;
1227     lpNewFormat->PrevFormat = lpFormat;
1228     lpNewFormat->NextFormat = NULL;
1229
1230     /* Pass on the registration request to the driver */
1231     USER_Driver.pRegisterClipboardFormat( FormatName );
1232
1233     return LastRegFormat++;
1234 }
1235
1236
1237 /**************************************************************************
1238  *              RegisterClipboardFormat (USER.145)
1239  */
1240 UINT16 WINAPI RegisterClipboardFormat16( LPCSTR FormatName )
1241 {
1242     return RegisterClipboardFormatA( FormatName );
1243 }
1244
1245
1246 /**************************************************************************
1247  *              RegisterClipboardFormatW (USER32.@)
1248  */
1249 UINT WINAPI RegisterClipboardFormatW( LPCWSTR formatName )
1250 {
1251     LPSTR aFormat = HEAP_strdupWtoA( GetProcessHeap(), 0, formatName );
1252     UINT ret = RegisterClipboardFormatA( aFormat );
1253     HeapFree( GetProcessHeap(), 0, aFormat );
1254     return ret;
1255 }
1256
1257
1258 /**************************************************************************
1259  *              GetClipboardFormatName (USER.146)
1260  */
1261 INT16 WINAPI GetClipboardFormatName16( UINT16 wFormat, LPSTR retStr, INT16 maxlen )
1262 {
1263     return GetClipboardFormatNameA( wFormat, retStr, maxlen );
1264 }
1265
1266
1267 /**************************************************************************
1268  *              GetClipboardFormatNameA (USER32.@)
1269  */
1270 INT WINAPI GetClipboardFormatNameA( UINT wFormat, LPSTR retStr, INT maxlen )
1271 {
1272     LPWINE_CLIPFORMAT lpFormat = __lookup_format( ClipFormats, wFormat );
1273
1274     TRACE("(%04X, %p, %d) !\n", wFormat, retStr, maxlen);
1275
1276     if (lpFormat == NULL || lpFormat->Name == NULL ||
1277         lpFormat->wFormatID < CF_REGFORMATBASE) return 0;
1278
1279     TRACE("Name='%s' !\n", lpFormat->Name);
1280
1281     lstrcpynA( retStr, lpFormat->Name, maxlen );
1282     return strlen(retStr);
1283 }
1284
1285
1286 /**************************************************************************
1287  *              GetClipboardFormatNameW (USER32.@)
1288  */
1289 INT WINAPI GetClipboardFormatNameW( UINT wFormat, LPWSTR retStr, INT maxlen )
1290 {
1291     INT ret;
1292     LPSTR p = HeapAlloc( GetProcessHeap(), 0, maxlen );
1293     if(p == NULL) return 0; /* FIXME: is this the correct failure value? */
1294
1295     ret = GetClipboardFormatNameA( wFormat, p, maxlen );
1296
1297     if (maxlen > 0 && !MultiByteToWideChar( CP_ACP, 0, p, -1, retStr, maxlen ))
1298         retStr[maxlen-1] = 0;
1299     HeapFree( GetProcessHeap(), 0, p );
1300     return ret;
1301 }
1302
1303
1304 /**************************************************************************
1305  *              SetClipboardViewer (USER.147)
1306  */
1307 HWND16 WINAPI SetClipboardViewer16( HWND16 hWnd )
1308 {
1309     TRACE("(%04x)\n", hWnd);
1310     return SetClipboardViewer( hWnd );
1311 }
1312
1313
1314 /**************************************************************************
1315  *              SetClipboardViewer (USER32.@)
1316  */
1317 HWND WINAPI SetClipboardViewer( HWND hWnd )
1318 {
1319     HWND hwndPrev = hWndViewer;
1320
1321     TRACE("(%04x): returning %04x\n", hWnd, hwndPrev);
1322
1323     hWndViewer = hWnd;
1324     return hwndPrev;
1325 }
1326
1327
1328 /**************************************************************************
1329  *              GetClipboardViewer (USER.148)
1330  */
1331 HWND16 WINAPI GetClipboardViewer16(void)
1332 {
1333     TRACE("()\n");
1334     return hWndViewer;
1335 }
1336
1337
1338 /**************************************************************************
1339  *              GetClipboardViewer (USER32.@)
1340  */
1341 HWND WINAPI GetClipboardViewer(void)
1342 {
1343     TRACE("()\n");
1344     return hWndViewer;
1345 }
1346
1347
1348 /**************************************************************************
1349  *              ChangeClipboardChain (USER.149)
1350  */
1351 BOOL16 WINAPI ChangeClipboardChain16(HWND16 hWnd, HWND16 hWndNext)
1352 {
1353     return ChangeClipboardChain(hWnd, hWndNext);
1354 }
1355
1356
1357 /**************************************************************************
1358  *              ChangeClipboardChain (USER32.@)
1359  */
1360 BOOL WINAPI ChangeClipboardChain(HWND hWnd, HWND hWndNext)
1361 {
1362     BOOL bRet = 0;
1363
1364     FIXME("(0x%04x, 0x%04x): stub?\n", hWnd, hWndNext);
1365
1366     if( hWndViewer )
1367         bRet = !SendMessageW( hWndViewer, WM_CHANGECBCHAIN, (WPARAM)hWnd, (LPARAM)hWndNext );
1368     else
1369         WARN("hWndViewer is lost\n");
1370
1371     if( hWnd == hWndViewer ) hWndViewer = hWndNext;
1372
1373     return bRet;
1374 }
1375
1376
1377 /**************************************************************************
1378  *              IsClipboardFormatAvailable (USER.193)
1379  */
1380 BOOL16 WINAPI IsClipboardFormatAvailable16( UINT16 wFormat )
1381 {
1382     return IsClipboardFormatAvailable( wFormat );
1383 }
1384
1385
1386 /**************************************************************************
1387  *              IsClipboardFormatAvailable (USER32.@)
1388  */
1389 BOOL WINAPI IsClipboardFormatAvailable( UINT wFormat )
1390 {
1391     BOOL bRet;
1392
1393     if (wFormat == 0)  /* Reject this case quickly */
1394         bRet = FALSE;
1395     else
1396     {
1397         UINT iret = CLIPBOARD_EnumClipboardFormats(wFormat - 1);
1398         if ((wFormat == CF_TEXT) || (wFormat == CF_OEMTEXT) || (wFormat == CF_UNICODETEXT))
1399             bRet = ((iret == CF_TEXT) || (iret == CF_OEMTEXT) || (iret == CF_UNICODETEXT));
1400         else
1401             bRet = iret == wFormat;
1402     }
1403     TRACE("(%04X)- ret(%d)\n", wFormat, bRet);
1404     return bRet;
1405 }
1406
1407
1408 /**************************************************************************
1409  *              GetOpenClipboardWindow (USER.248)
1410  *  FIXME: This wont work if an external app owns the selection
1411  */
1412 HWND16 WINAPI GetOpenClipboardWindow16(void)
1413 {
1414     TRACE("()\n");
1415     return hWndClipWindow;
1416 }
1417
1418
1419 /**************************************************************************
1420  *              GetOpenClipboardWindow (USER32.@)
1421  *  FIXME: This wont work if an external app owns the selection
1422  */
1423 HWND WINAPI GetOpenClipboardWindow(void)
1424 {
1425     TRACE("()\n");
1426     return hWndClipWindow;
1427 }
1428
1429
1430 /**************************************************************************
1431  *              GetPriorityClipboardFormat (USER.402)
1432  */
1433 INT16 WINAPI GetPriorityClipboardFormat16( UINT16 *lpPriorityList, INT16 nCount)
1434 {
1435     FIXME("(%p,%d): stub\n", lpPriorityList, nCount );
1436     return 0;
1437 }
1438
1439
1440 /**************************************************************************
1441  *              GetPriorityClipboardFormat (USER32.@)
1442  */
1443 INT WINAPI GetPriorityClipboardFormat( UINT *lpPriorityList, INT nCount )
1444 {
1445     int Counter;
1446     TRACE("()\n");
1447
1448     if(CountClipboardFormats() == 0)
1449     {
1450         return 0;
1451     }
1452
1453     for(Counter = 0; Counter <= nCount; Counter++)
1454     {
1455         if(IsClipboardFormatAvailable(*(lpPriorityList+sizeof(INT)*Counter)))
1456             return *(lpPriorityList+sizeof(INT)*Counter);
1457     }
1458
1459     return -1;
1460 }
1461
1462
1463 /**************************************************************************
1464  *              GetClipboardSequenceNumber (USER32.@)
1465  * Supported on Win2k/Win98
1466  * MSDN: Windows clipboard code keeps a serial number for the clipboard
1467  * for each window station.  The number is incremented whenever the
1468  * contents change or are emptied.
1469  * If you do not have WINSTA_ACCESSCLIPBOARD then the function returns 0
1470  */
1471 DWORD WINAPI GetClipboardSequenceNumber(VOID)
1472 {
1473         FIXME("Returning 0, see windows/clipboard.c\n");
1474         /* FIXME: Use serial numbers */
1475         return 0;
1476 }
1477