objects/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  */
   7
   8 #include "config.h"
   9
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include "gdi.h"
  13 #include "heap.h"
  14 #include "debugtools.h"
  15 #include "font.h"
  16 #include "callback.h"
  17 #include "winerror.h"
  18 #include "windef.h"
  19 #include "wingdi.h"
  20 #include "wine/winuser16.h"
  21
  22 DEFAULT_DEBUG_CHANNEL(dc);
  23
  24
  25 /***********************************************************************
  26  *           DC_AllocDC
  27  */
  28 DC *DC_AllocDC( const DC_FUNCTIONS *funcs )
  29 {
  30     HDC hdc;
  31     DC *dc;
  32
  33     if (!(dc = GDI_AllocObject( sizeof(*dc), DC_MAGIC, &hdc ))) return NULL;
  34
  35     dc->hSelf               = hdc;
  36     dc->funcs               = funcs;
  37     dc->physDev             = NULL;
  38     dc->saveLevel           = 0;
  39     dc->dwHookData          = 0;
  40     dc->hookProc            = NULL;
  41     dc->hookThunk           = NULL;
  42     dc->wndOrgX             = 0;
  43     dc->wndOrgY             = 0;
  44     dc->wndExtX             = 1;
  45     dc->wndExtY             = 1;
  46     dc->vportOrgX           = 0;
  47     dc->vportOrgY           = 0;
  48     dc->vportExtX           = 1;
  49     dc->vportExtY           = 1;
  50     dc->flags               = 0;
  51     dc->devCaps             = NULL;
  52     dc->hClipRgn            = 0;
  53     dc->hVisRgn             = 0;
  54     dc->hGCClipRgn          = 0;
  55     dc->hPen                = GetStockObject( BLACK_PEN );
  56     dc->hBrush              = GetStockObject( WHITE_BRUSH );
  57     dc->hFont               = GetStockObject( SYSTEM_FONT );
  58     dc->hBitmap             = 0;
  59     dc->hDevice             = 0;
  60     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
  61     dc->ROPmode             = R2_COPYPEN;
  62     dc->polyFillMode        = ALTERNATE;
  63     dc->stretchBltMode      = BLACKONWHITE;
  64     dc->relAbsMode          = ABSOLUTE;
  65     dc->backgroundMode      = OPAQUE;
  66     dc->backgroundColor     = RGB( 255, 255, 255 );
  67     dc->textColor           = RGB( 0, 0, 0 );
  68     dc->brushOrgX           = 0;
  69     dc->brushOrgY           = 0;
  70     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
  71     dc->charExtra           = 0;
  72     dc->breakTotalExtra     = 0;
  73     dc->breakCount          = 0;
  74     dc->breakExtra          = 0;
  75     dc->breakRem            = 0;
  76     dc->totalExtent.left    = 0;
  77     dc->totalExtent.top     = 0;
  78     dc->totalExtent.right   = 0;
  79     dc->totalExtent.bottom  = 0;
  80     dc->bitsPerPixel        = 1;
  81     dc->MapMode             = MM_TEXT;
  82     dc->GraphicsMode        = GM_COMPATIBLE;
  83     dc->DCOrgX              = 0;
  84     dc->DCOrgY              = 0;
  85     dc->pAbortProc          = NULL;
  86     dc->CursPosX            = 0;
  87     dc->CursPosY            = 0;
  88     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
  89     dc->xformWorld2Wnd.eM11 = 1.0f;
  90     dc->xformWorld2Wnd.eM12 = 0.0f;
  91     dc->xformWorld2Wnd.eM21 = 0.0f;
  92     dc->xformWorld2Wnd.eM22 = 1.0f;
  93     dc->xformWorld2Wnd.eDx  = 0.0f;
  94     dc->xformWorld2Wnd.eDy  = 0.0f;
  95     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
  96     dc->xformVport2World    = dc->xformWorld2Wnd;
  97     dc->vport2WorldValid    = TRUE;
  98     PATH_InitGdiPath(&dc->path);
  99     return dc;
 100 }
 101
 102
 103
 104 /***********************************************************************
 105  *           DC_GetDCPtr
 106  */
 107 DC *DC_GetDCPtr( HDC hdc )
 108 {
 109     GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
 110     if (!ptr) return NULL;
 111     if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
 112         (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
 113         (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
 114         return (DC *)ptr;
 115     GDI_ReleaseObj( hdc );
 116     SetLastError( ERROR_INVALID_HANDLE );
 117     return NULL;
 118 }
 119
 120 /***********************************************************************
 121  *           DC_GetDCUpdate
 122  *
 123  * Retrieve a DC ptr while making sure the visRgn is updated.
 124  * This function may call up to USER so the GDI lock should _not_
 125  * be held when calling it.
 126  */
 127 DC *DC_GetDCUpdate( HDC hdc )
 128 {
 129     DC *dc = DC_GetDCPtr( hdc );
 130     if (!dc) return NULL;
 131     while (dc->flags & DC_DIRTY)
 132     {
 133         dc->flags &= ~DC_DIRTY;
 134         if (!(dc->flags & (DC_SAVED | DC_MEMORY)))
 135         {
 136             DCHOOKPROC proc = dc->hookThunk;
 137             if (proc)
 138             {
 139                 DWORD data = dc->dwHookData;
 140                 GDI_ReleaseObj( hdc );
 141                 proc( hdc, DCHC_INVALIDVISRGN, data, 0 );
 142                 if (!(dc = DC_GetDCPtr( hdc ))) break;
 143                 /* otherwise restart the loop in case it became dirty again in the meantime */
 144             }
 145         }
 146     }
 147     return dc;
 148 }
 149
 150 /***********************************************************************
 151  *           DC_InitDC
 152  *
 153  * Setup device-specific DC values for a newly created DC.
 154  */
 155 void DC_InitDC( DC* dc )
 156 {
 157     RealizeDefaultPalette16( dc->hSelf );
 158     SetTextColor( dc->hSelf, dc->textColor );
 159     SetBkColor( dc->hSelf, dc->backgroundColor );
 160     SelectObject( dc->hSelf, dc->hPen );
 161     SelectObject( dc->hSelf, dc->hBrush );
 162     SelectObject( dc->hSelf, dc->hFont );
 163     CLIPPING_UpdateGCRegion( dc );
 164 }
 165
 166
 167 /***********************************************************************
 168  *           DC_InvertXform
 169  *
 170  * Computes the inverse of the transformation xformSrc and stores it to
 171  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 172  * is singular.
 173  */
 174 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 175 {
 176     FLOAT determinant;
 177
 178     determinant = xformSrc->eM11*xformSrc->eM22 -
 179         xformSrc->eM12*xformSrc->eM21;
 180     if (determinant > -1e-12 && determinant < 1e-12)
 181         return FALSE;
 182
 183     xformDest->eM11 =  xformSrc->eM22 / determinant;
 184     xformDest->eM12 = -xformSrc->eM12 / determinant;
 185     xformDest->eM21 = -xformSrc->eM21 / determinant;
 186     xformDest->eM22 =  xformSrc->eM11 / determinant;
 187     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 188                        xformSrc->eDy * xformDest->eM21;
 189     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 190                        xformSrc->eDy * xformDest->eM22;
 191
 192     return TRUE;
 193 }
 194
 195
 196 /***********************************************************************
 197  *           DC_UpdateXforms
 198  *
 199  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 200  * fields of the specified DC by creating a transformation that
 201  * represents the current mapping mode and combining it with the DC's
 202  * world transform. This function should be called whenever the
 203  * parameters associated with the mapping mode (window and viewport
 204  * extents and origins) or the world transform change.
 205  */
 206 void DC_UpdateXforms( DC *dc )
 207 {
 208     XFORM xformWnd2Vport;
 209     FLOAT scaleX, scaleY;
 210
 211     /* Construct a transformation to do the window-to-viewport conversion */
 212     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 213     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 214     xformWnd2Vport.eM11 = scaleX;
 215     xformWnd2Vport.eM12 = 0.0;
 216     xformWnd2Vport.eM21 = 0.0;
 217     xformWnd2Vport.eM22 = scaleY;
 218     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 219         scaleX * (FLOAT)dc->wndOrgX;
 220     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 221         scaleY * (FLOAT)dc->wndOrgY;
 222
 223     /* Combine with the world transformation */
 224     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 225         &xformWnd2Vport );
 226
 227     /* Create inverse of world-to-viewport transformation */
 228     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 229         &dc->xformVport2World );
 230 }
 231
 232
 233 /***********************************************************************
 234  *           GetDCState    (GDI.179)
 235  */
 236 HDC16 WINAPI GetDCState16( HDC16 hdc )
 237 {
 238     DC * newdc, * dc;
 239     HGDIOBJ handle;
 240
 241     if (!(dc = DC_GetDCUpdate( hdc ))) return 0;
 242     if (!(newdc = GDI_AllocObject( sizeof(DC), DC_MAGIC, &handle )))
 243     {
 244       GDI_ReleaseObj( hdc );
 245       return 0;
 246     }
 247     TRACE("(%04x): returning %04x\n", hdc, handle );
 248
 249     newdc->flags            = dc->flags | DC_SAVED;
 250     newdc->devCaps          = dc->devCaps;
 251     newdc->hPen             = dc->hPen;
 252     newdc->hBrush           = dc->hBrush;
 253     newdc->hFont            = dc->hFont;
 254     newdc->hBitmap          = dc->hBitmap;
 255     newdc->hDevice          = dc->hDevice;
 256     newdc->hPalette         = dc->hPalette;
 257     newdc->totalExtent      = dc->totalExtent;
 258     newdc->bitsPerPixel     = dc->bitsPerPixel;
 259     newdc->ROPmode          = dc->ROPmode;
 260     newdc->polyFillMode     = dc->polyFillMode;
 261     newdc->stretchBltMode   = dc->stretchBltMode;
 262     newdc->relAbsMode       = dc->relAbsMode;
 263     newdc->backgroundMode   = dc->backgroundMode;
 264     newdc->backgroundColor  = dc->backgroundColor;
 265     newdc->textColor        = dc->textColor;
 266     newdc->brushOrgX        = dc->brushOrgX;
 267     newdc->brushOrgY        = dc->brushOrgY;
 268     newdc->textAlign        = dc->textAlign;
 269     newdc->charExtra        = dc->charExtra;
 270     newdc->breakTotalExtra  = dc->breakTotalExtra;
 271     newdc->breakCount       = dc->breakCount;
 272     newdc->breakExtra       = dc->breakExtra;
 273     newdc->breakRem         = dc->breakRem;
 274     newdc->MapMode          = dc->MapMode;
 275     newdc->GraphicsMode     = dc->GraphicsMode;
 276 #if 0
 277     /* Apparently, the DC origin is not changed by [GS]etDCState */
 278     newdc->DCOrgX           = dc->DCOrgX;
 279     newdc->DCOrgY           = dc->DCOrgY;
 280 #endif
 281     newdc->CursPosX         = dc->CursPosX;
 282     newdc->CursPosY         = dc->CursPosY;
 283     newdc->ArcDirection     = dc->ArcDirection;
 284     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 285     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 286     newdc->xformVport2World = dc->xformVport2World;
 287     newdc->vport2WorldValid = dc->vport2WorldValid;
 288     newdc->wndOrgX          = dc->wndOrgX;
 289     newdc->wndOrgY          = dc->wndOrgY;
 290     newdc->wndExtX          = dc->wndExtX;
 291     newdc->wndExtY          = dc->wndExtY;
 292     newdc->vportOrgX        = dc->vportOrgX;
 293     newdc->vportOrgY        = dc->vportOrgY;
 294     newdc->vportExtX        = dc->vportExtX;
 295     newdc->vportExtY        = dc->vportExtY;
 296
 297     newdc->hSelf = (HDC)handle;
 298     newdc->saveLevel = 0;
 299
 300     PATH_InitGdiPath( &newdc->path );
 301
 302     newdc->pAbortProc = NULL;
 303     newdc->hookThunk  = NULL;
 304     newdc->hookProc   = 0;
 305
 306     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 307
 308     newdc->hGCClipRgn = newdc->hVisRgn = 0;
 309     if (dc->hClipRgn)
 310     {
 311         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 312         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 313     }
 314     else
 315         newdc->hClipRgn = 0;
 316     GDI_ReleaseObj( handle );
 317     GDI_ReleaseObj( hdc );
 318     return handle;
 319 }
 320
 321
 322 /***********************************************************************
 323  *           SetDCState    (GDI.180)
 324  */
 325 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 326 {
 327     DC *dc, *dcs;
 328
 329     if (!(dc = GDI_GetObjPtr( hdc, DC_MAGIC ))) return;
 330     if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
 331     {
 332       GDI_ReleaseObj( hdc );
 333       return;
 334     }
 335     if (!dcs->flags & DC_SAVED)
 336     {
 337       GDI_ReleaseObj( hdc );
 338       GDI_ReleaseObj( hdcs );
 339       return;
 340     }
 341     TRACE("%04x %04x\n", hdc, hdcs );
 342
 343     dc->flags            = dcs->flags & ~DC_SAVED;
 344     dc->devCaps          = dcs->devCaps;
 345     dc->hDevice          = dcs->hDevice;
 346     dc->totalExtent      = dcs->totalExtent;
 347     dc->ROPmode          = dcs->ROPmode;
 348     dc->polyFillMode     = dcs->polyFillMode;
 349     dc->stretchBltMode   = dcs->stretchBltMode;
 350     dc->relAbsMode       = dcs->relAbsMode;
 351     dc->backgroundMode   = dcs->backgroundMode;
 352     dc->backgroundColor  = dcs->backgroundColor;
 353     dc->textColor        = dcs->textColor;
 354     dc->brushOrgX        = dcs->brushOrgX;
 355     dc->brushOrgY        = dcs->brushOrgY;
 356     dc->textAlign        = dcs->textAlign;
 357     dc->charExtra        = dcs->charExtra;
 358     dc->breakTotalExtra  = dcs->breakTotalExtra;
 359     dc->breakCount       = dcs->breakCount;
 360     dc->breakExtra       = dcs->breakExtra;
 361     dc->breakRem         = dcs->breakRem;
 362     dc->MapMode          = dcs->MapMode;
 363     dc->GraphicsMode     = dcs->GraphicsMode;
 364 #if 0
 365     /* Apparently, the DC origin is not changed by [GS]etDCState */
 366     dc->DCOrgX           = dcs->DCOrgX;
 367     dc->DCOrgY           = dcs->DCOrgY;
 368 #endif
 369     dc->CursPosX         = dcs->CursPosX;
 370     dc->CursPosY         = dcs->CursPosY;
 371     dc->ArcDirection     = dcs->ArcDirection;
 372     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 373     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 374     dc->xformVport2World = dcs->xformVport2World;
 375     dc->vport2WorldValid = dcs->vport2WorldValid;
 376
 377     dc->wndOrgX          = dcs->wndOrgX;
 378     dc->wndOrgY          = dcs->wndOrgY;
 379     dc->wndExtX          = dcs->wndExtX;
 380     dc->wndExtY          = dcs->wndExtY;
 381     dc->vportOrgX        = dcs->vportOrgX;
 382     dc->vportOrgY        = dcs->vportOrgY;
 383     dc->vportExtX        = dcs->vportExtX;
 384     dc->vportExtY        = dcs->vportExtY;
 385
 386     if (!(dc->flags & DC_MEMORY)) dc->bitsPerPixel = dcs->bitsPerPixel;
 387
 388     if (dcs->hClipRgn)
 389     {
 390         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 391         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 392     }
 393     else
 394     {
 395         if (dc->hClipRgn) DeleteObject16( dc->hClipRgn );
 396         dc->hClipRgn = 0;
 397     }
 398     CLIPPING_UpdateGCRegion( dc );
 399
 400     SelectObject( hdc, dcs->hBitmap );
 401     SelectObject( hdc, dcs->hBrush );
 402     SelectObject( hdc, dcs->hFont );
 403     SelectObject( hdc, dcs->hPen );
 404     SetBkColor( hdc, dcs->backgroundColor);
 405     SetTextColor( hdc, dcs->textColor);
 406     GDISelectPalette16( hdc, dcs->hPalette, FALSE );
 407     GDI_ReleaseObj( hdcs );
 408     GDI_ReleaseObj( hdc );
 409 }
 410
 411
 412 /***********************************************************************
 413  *           SaveDC16    (GDI.30)
 414  */
 415 INT16 WINAPI SaveDC16( HDC16 hdc )
 416 {
 417     return (INT16)SaveDC( hdc );
 418 }
 419
 420
 421 /***********************************************************************
 422  *           SaveDC    (GDI32.292)
 423  */
 424 INT WINAPI SaveDC( HDC hdc )
 425 {
 426     HDC hdcs;
 427     DC * dc, * dcs;
 428     INT ret;
 429
 430     dc = DC_GetDCUpdate( hdc );
 431     if (!dc) return 0;
 432
 433     if(dc->funcs->pSaveDC)
 434     {
 435         ret = dc->funcs->pSaveDC( dc );
 436         GDI_ReleaseObj( hdc );
 437         return ret;
 438     }
 439
 440     if (!(hdcs = GetDCState16( hdc )))
 441     {
 442       GDI_ReleaseObj( hdc );
 443       return 0;
 444     }
 445     dcs = GDI_GetObjPtr( hdcs, DC_MAGIC );
 446
 447     /* Copy path. The reason why path saving / restoring is in SaveDC/
 448      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 449      * functions are only in Win16 (which doesn't have paths) and that
 450      * SetDCState doesn't allow us to signal an error (which can happen
 451      * when copying paths).
 452      */
 453     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 454     {
 455         GDI_ReleaseObj( hdc );
 456         GDI_ReleaseObj( hdcs );
 457         DeleteDC( hdcs );
 458         return 0;
 459     }
 460
 461     dcs->header.hNext = dc->header.hNext;
 462     dc->header.hNext = hdcs;
 463     TRACE("(%04x): returning %d\n", hdc, dc->saveLevel+1 );
 464     ret = ++dc->saveLevel;
 465     GDI_ReleaseObj( hdcs );
 466     GDI_ReleaseObj( hdc );
 467     return ret;
 468 }
 469
 470
 471 /***********************************************************************
 472  *           RestoreDC16    (GDI.39)
 473  */
 474 BOOL16 WINAPI RestoreDC16( HDC16 hdc, INT16 level )
 475 {
 476     return RestoreDC( hdc, level );
 477 }
 478
 479
 480 /***********************************************************************
 481  *           RestoreDC    (GDI32.290)
 482  */
 483 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 484 {
 485     DC * dc, * dcs;
 486     BOOL success;
 487
 488     TRACE("%04x %d\n", hdc, level );
 489     dc = DC_GetDCPtr( hdc );
 490     if(!dc) return FALSE;
 491     if(dc->funcs->pRestoreDC)
 492     {
 493         success = dc->funcs->pRestoreDC( dc, level );
 494         GDI_ReleaseObj( hdc );
 495         return success;
 496     }
 497
 498     if (level == -1) level = dc->saveLevel;
 499     if ((level < 1)
 500             /* This pair of checks disagrees with MSDN "Platform SDK:
 501                Windows GDI" July 2000 which says all negative values
 502                for level will be interpreted as an instance relative
 503                to the current state.  Restricting it to just -1 does
 504                not satisfy this */
 505         || (level > dc->saveLevel))
 506     {
 507         GDI_ReleaseObj( hdc );
 508         return FALSE;
 509     }
 510
 511     success=TRUE;
 512     while (dc->saveLevel >= level)
 513     {
 514         HDC16 hdcs = dc->header.hNext;
 515         if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC )))
 516         {
 517           GDI_ReleaseObj( hdc );
 518           return FALSE;
 519         }
 520         dc->header.hNext = dcs->header.hNext;
 521         if (--dc->saveLevel < level)
 522         {
 523             SetDCState16( hdc, hdcs );
 524             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 525                 /* FIXME: This might not be quite right, since we're
 526                  * returning FALSE but still destroying the saved DC state */
 527                 success=FALSE;
 528         }
 529         GDI_ReleaseObj( hdcs );
 530         DeleteDC( hdcs );
 531     }
 532     GDI_ReleaseObj( hdc );
 533     return success;
 534 }
 535
 536
 537 /***********************************************************************
 538  *           CreateDC16    (GDI.53)
 539  */
 540 HDC16 WINAPI CreateDC16( LPCSTR driver, LPCSTR device, LPCSTR output,
 541                          const DEVMODEA *initData )
 542 {
 543     HDC hdc;
 544     DC * dc;
 545     const DC_FUNCTIONS *funcs;
 546     char buf[300];
 547
 548     if (!device || !DRIVER_GetDriverName( device, buf, sizeof(buf) ))
 549         strcpy(buf, driver);
 550
 551     if (!(funcs = DRIVER_FindDriver( buf ))) return 0;
 552     if (!(dc = DC_AllocDC( funcs ))) return 0;
 553     dc->flags = 0;
 554
 555     TRACE("(driver=%s, device=%s, output=%s): returning %04x\n",
 556                debugstr_a(driver), debugstr_a(device), debugstr_a(output), dc->hSelf );
 557
 558     if (dc->funcs->pCreateDC &&
 559         !dc->funcs->pCreateDC( dc, buf, device, output, initData ))
 560     {
 561         WARN("creation aborted by device\n" );
 562         GDI_FreeObject( dc->hSelf, dc );
 563         return 0;
 564     }
 565
 566     DC_InitDC( dc );
 567     hdc = dc->hSelf;
 568     GDI_ReleaseObj( hdc );
 569     return hdc;
 570 }
 571
 572
 573 /***********************************************************************
 574  *           CreateDCA    (GDI32.)
 575  */
 576 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 577                           const DEVMODEA *initData )
 578 {
 579     return CreateDC16( driver, device, output, (const DEVMODEA *)initData );
 580 }
 581
 582
 583 /***********************************************************************
 584  *           CreateDCW    (GDI32.)
 585  */
 586 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 587                           const DEVMODEW *initData )
 588 {
 589     LPSTR driverA = HEAP_strdupWtoA( GetProcessHeap(), 0, driver );
 590     LPSTR deviceA = HEAP_strdupWtoA( GetProcessHeap(), 0, device );
 591     LPSTR outputA = HEAP_strdupWtoA( GetProcessHeap(), 0, output );
 592     HDC res = CreateDC16( driverA, deviceA, outputA,
 593                             (const DEVMODEA *)initData /*FIXME*/ );
 594     HeapFree( GetProcessHeap(), 0, driverA );
 595     HeapFree( GetProcessHeap(), 0, deviceA );
 596     HeapFree( GetProcessHeap(), 0, outputA );
 597     return res;
 598 }
 599
 600
 601 /***********************************************************************
 602  *           CreateIC16    (GDI.153)
 603  */
 604 HDC16 WINAPI CreateIC16( LPCSTR driver, LPCSTR device, LPCSTR output,
 605                          const DEVMODEA* initData )
 606 {
 607       /* Nothing special yet for ICs */
 608     return CreateDC16( driver, device, output, initData );
 609 }
 610
 611
 612 /***********************************************************************
 613  *           CreateICA    (GDI32.49)
 614  */
 615 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 616                           const DEVMODEA* initData )
 617 {
 618       /* Nothing special yet for ICs */
 619     return CreateDCA( driver, device, output, initData );
 620 }
 621
 622
 623 /***********************************************************************
 624  *           CreateICW    (GDI32.50)
 625  */
 626 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 627                           const DEVMODEW* initData )
 628 {
 629       /* Nothing special yet for ICs */
 630     return CreateDCW( driver, device, output, initData );
 631 }
 632
 633
 634 /***********************************************************************
 635  *           CreateCompatibleDC16    (GDI.52)
 636  */
 637 HDC16 WINAPI CreateCompatibleDC16( HDC16 hdc )
 638 {
 639     return (HDC16)CreateCompatibleDC( hdc );
 640 }
 641
 642
 643 /***********************************************************************
 644  *           CreateCompatibleDC   (GDI32.31)
 645  */
 646 HDC WINAPI CreateCompatibleDC( HDC hdc )
 647 {
 648     DC *dc, *origDC;
 649     const DC_FUNCTIONS *funcs;
 650
 651     if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC ))) funcs = origDC->funcs;
 652     else funcs = DRIVER_FindDriver( "DISPLAY" );
 653
 654     if (!funcs || !(dc = DC_AllocDC( funcs )))
 655     {
 656         if (origDC) GDI_ReleaseObj( hdc );
 657         return 0;
 658     }
 659
 660     TRACE("(%04x): returning %04x\n",
 661                hdc, dc->hSelf );
 662
 663     dc->flags        = DC_MEMORY;
 664     dc->bitsPerPixel = 1;
 665     dc->hBitmap      = hPseudoStockBitmap;
 666
 667     /* Copy the driver-specific physical device info into
 668      * the new DC. The driver may use this read-only info
 669      * while creating the compatible DC below. */
 670     if (origDC)
 671         dc->physDev = origDC->physDev;
 672
 673     if (dc->funcs->pCreateDC &&
 674         !dc->funcs->pCreateDC( dc, NULL, NULL, NULL, NULL ))
 675     {
 676         WARN("creation aborted by device\n");
 677         GDI_FreeObject( dc->hSelf, dc );
 678         if (origDC) GDI_ReleaseObj( hdc );
 679         return 0;
 680     }
 681
 682     DC_InitDC( dc );
 683     GDI_ReleaseObj( dc->hSelf );
 684     if (origDC) GDI_ReleaseObj( hdc );
 685     return dc->hSelf;
 686 }
 687
 688
 689 /***********************************************************************
 690  *           DeleteDC16    (GDI.68)
 691  */
 692 BOOL16 WINAPI DeleteDC16( HDC16 hdc )
 693 {
 694     return DeleteDC( hdc );
 695 }
 696
 697
 698 /***********************************************************************
 699  *           DeleteDC    (GDI32.67)
 700  */
 701 BOOL WINAPI DeleteDC( HDC hdc )
 702 {
 703     DC * dc = GDI_GetObjPtr( hdc, DC_MAGIC );
 704     if (!dc) return FALSE;
 705
 706     TRACE("%04x\n", hdc );
 707
 708     /* Call hook procedure to check whether is it OK to delete this DC */
 709     if (dc->hookThunk && !(dc->flags & (DC_SAVED | DC_MEMORY)))
 710     {
 711         DCHOOKPROC proc = dc->hookThunk;
 712         if (proc)
 713         {
 714             DWORD data = dc->dwHookData;
 715             GDI_ReleaseObj( hdc );
 716             if (!proc( hdc, DCHC_DELETEDC, data, 0 )) return FALSE;
 717             if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 718         }
 719     }
 720
 721     while (dc->saveLevel)
 722     {
 723         DC * dcs;
 724         HDC16 hdcs = dc->header.hNext;
 725         if (!(dcs = GDI_GetObjPtr( hdcs, DC_MAGIC ))) break;
 726         dc->header.hNext = dcs->header.hNext;
 727         dc->saveLevel--;
 728         GDI_ReleaseObj( hdcs );
 729         DeleteDC( hdcs );
 730     }
 731
 732     if (!(dc->flags & DC_SAVED))
 733     {
 734         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 735         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 736         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 737         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc);
 738     }
 739
 740     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 741     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 742     if (dc->hGCClipRgn) DeleteObject( dc->hGCClipRgn );
 743     if (dc->pAbortProc) THUNK_Free( (FARPROC)dc->pAbortProc );
 744     if (dc->hookThunk) THUNK_Free( (FARPROC)dc->hookThunk );
 745     PATH_DestroyGdiPath(&dc->path);
 746
 747     return GDI_FreeObject( hdc, dc );
 748 }
 749
 750
 751 /***********************************************************************
 752  *           ResetDC16    (GDI.376)
 753  */
 754 HDC16 WINAPI ResetDC16( HDC16 hdc, const DEVMODEA *devmode )
 755 {
 756     FIXME("stub\n" );
 757     return hdc;
 758 }
 759
 760
 761 /***********************************************************************
 762  *           ResetDCA    (GDI32.287)
 763  */
 764 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 765 {
 766     FIXME("stub\n" );
 767     return hdc;
 768 }
 769
 770
 771 /***********************************************************************
 772  *           ResetDCW    (GDI32.288)
 773  */
 774 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 775 {
 776     FIXME("stub\n" );
 777     return hdc;
 778 }
 779
 780
 781 /***********************************************************************
 782  *           GetDeviceCaps16    (GDI.80)
 783  */
 784 INT16 WINAPI GetDeviceCaps16( HDC16 hdc, INT16 cap )
 785 {
 786     INT16 ret = GetDeviceCaps( hdc, cap );
 787     /* some apps don't expect -1 and think it's a B&W screen */
 788     if ((cap == NUMCOLORS) && (ret == -1)) ret = 2048;
 789     return ret;
 790 }
 791
 792
 793 /***********************************************************************
 794  *           GetDeviceCaps    (GDI32.171)
 795  */
 796 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 797 {
 798     DC *dc;
 799     INT ret = 0;
 800     POINT pt;
 801
 802     /* Device capabilities for the printer */
 803     switch (cap)
 804     {
 805     case PHYSICALWIDTH:
 806         if(Escape(hdc, GETPHYSPAGESIZE, 0, NULL, (LPVOID)&pt) > 0) ret = pt.x;
 807         break;
 808     case PHYSICALHEIGHT:
 809         if(Escape(hdc, GETPHYSPAGESIZE, 0, NULL, (LPVOID)&pt) > 0) ret = pt.y;
 810         break;
 811     case PHYSICALOFFSETX:
 812         if(Escape(hdc, GETPRINTINGOFFSET, 0, NULL, (LPVOID)&pt) > 0) ret = pt.x;
 813         break;
 814     case PHYSICALOFFSETY:
 815         if(Escape(hdc, GETPRINTINGOFFSET, 0, NULL, (LPVOID)&pt) > 0) ret = pt.y;
 816         break;
 817     case SCALINGFACTORX:
 818         if(Escape(hdc, GETSCALINGFACTOR, 0, NULL, (LPVOID)&pt) > 0) ret = pt.x;
 819         break;
 820     case SCALINGFACTORY:
 821         if(Escape(hdc, GETSCALINGFACTOR, 0, NULL, (LPVOID)&pt) > 0) ret = pt.y;
 822         break;
 823     default:
 824         if ((cap < 0) || (cap > sizeof(DeviceCaps)-sizeof(WORD))) break;
 825
 826         if (((cap>=46) && (cap<88)) || ((cap>=92) && (cap<104)))
 827             FIXME("(%04x,%d): unsupported DeviceCaps capability, will yield 0!\n",
 828                   hdc,cap );
 829         if ((dc = DC_GetDCPtr( hdc )))
 830         {
 831             ret = *(WORD *)(((char *)dc->devCaps) + cap);
 832             GDI_ReleaseObj( hdc );
 833             if ((cap == NUMCOLORS) && (ret == 0xffff)) ret = -1;
 834         }
 835         break;
 836     }
 837
 838     TRACE("(%04x,%d): returning %d\n", hdc, cap, ret );
 839     return ret;
 840 }
 841
 842
 843 /***********************************************************************
 844  *           SetBkColor16    (GDI.1)
 845  */
 846 COLORREF WINAPI SetBkColor16( HDC16 hdc, COLORREF color )
 847 {
 848     return SetBkColor( hdc, color );
 849 }
 850
 851
 852 /***********************************************************************
 853  *           SetBkColor    (GDI32.305)
 854  */
 855 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 856 {
 857     COLORREF oldColor;
 858     DC * dc = DC_GetDCPtr( hdc );
 859
 860     if (!dc) return 0x80000000;
 861     if (dc->funcs->pSetBkColor)
 862         oldColor = dc->funcs->pSetBkColor(dc, color);
 863     else {
 864         oldColor = dc->backgroundColor;
 865         dc->backgroundColor = color;
 866     }
 867     GDI_ReleaseObj( hdc );
 868     return oldColor;
 869 }
 870
 871
 872 /***********************************************************************
 873  *           SetTextColor16    (GDI.9)
 874  */
 875 COLORREF WINAPI SetTextColor16( HDC16 hdc, COLORREF color )
 876 {
 877     return SetTextColor( hdc, color );
 878 }
 879
 880
 881 /***********************************************************************
 882  *           SetTextColor    (GDI32.338)
 883  */
 884 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 885 {
 886     COLORREF oldColor;
 887     DC * dc = DC_GetDCPtr( hdc );
 888
 889     if (!dc) return 0x80000000;
 890     if (dc->funcs->pSetTextColor)
 891         oldColor = dc->funcs->pSetTextColor(dc, color);
 892     else {
 893         oldColor = dc->textColor;
 894         dc->textColor = color;
 895     }
 896     GDI_ReleaseObj( hdc );
 897     return oldColor;
 898 }
 899
 900 /***********************************************************************
 901  *           SetTextAlign16    (GDI.346)
 902  */
 903 UINT16 WINAPI SetTextAlign16( HDC16 hdc, UINT16 align )
 904 {
 905     return SetTextAlign( hdc, align );
 906 }
 907
 908
 909 /***********************************************************************
 910  *           SetTextAlign    (GDI32.336)
 911  */
 912 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 913 {
 914     UINT prevAlign;
 915     DC *dc = DC_GetDCPtr( hdc );
 916     if (!dc) return 0x0;
 917     if (dc->funcs->pSetTextAlign)
 918         prevAlign = dc->funcs->pSetTextAlign(dc, align);
 919     else {
 920         prevAlign = dc->textAlign;
 921         dc->textAlign = align;
 922     }
 923     GDI_ReleaseObj( hdc );
 924     return prevAlign;
 925 }
 926
 927 /***********************************************************************
 928  *           GetDCOrgEx  (GDI32.168)
 929  */
 930 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
 931 {
 932     DC * dc;
 933
 934     if (!lpp) return FALSE;
 935     if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
 936
 937     lpp->x = lpp->y = 0;
 938     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc, lpp );
 939     lpp->x += dc->DCOrgX;
 940     lpp->y += dc->DCOrgY;
 941     GDI_ReleaseObj( hDC );
 942     return TRUE;
 943 }
 944
 945
 946 /***********************************************************************
 947  *           GetDCOrg    (GDI.79)
 948  */
 949 DWORD WINAPI GetDCOrg16( HDC16 hdc )
 950 {
 951     POINT       pt;
 952     if( GetDCOrgEx( hdc, &pt) )
 953         return MAKELONG( (WORD)pt.x, (WORD)pt.y );
 954     return 0;
 955 }
 956
 957
 958 /***********************************************************************
 959  *           SetDCOrg    (GDI.117)
 960  */
 961 DWORD WINAPI SetDCOrg16( HDC16 hdc, INT16 x, INT16 y )
 962 {
 963     DWORD prevOrg;
 964     DC *dc = DC_GetDCPtr( hdc );
 965     if (!dc) return 0;
 966     prevOrg = dc->DCOrgX | (dc->DCOrgY << 16);
 967     dc->DCOrgX = x;
 968     dc->DCOrgY = y;
 969     GDI_ReleaseObj( hdc );
 970     return prevOrg;
 971 }
 972
 973
 974 /***********************************************************************
 975  *           SetGraphicsMode    (GDI32.317)
 976  */
 977 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
 978 {
 979     INT ret = 0;
 980     DC *dc = DC_GetDCPtr( hdc );
 981
 982     /* One would think that setting the graphics mode to GM_COMPATIBLE
 983      * would also reset the world transformation matrix to the unity
 984      * matrix. However, in Windows, this is not the case. This doesn't
 985      * make a lot of sense to me, but that's the way it is.
 986      */
 987     if (!dc) return 0;
 988     if ((mode > 0) || (mode <= GM_LAST))
 989     {
 990         ret = dc->GraphicsMode;
 991         dc->GraphicsMode = mode;
 992     }
 993     GDI_ReleaseObj( hdc );
 994     return ret;
 995 }
 996
 997
 998 /***********************************************************************
 999  *           SetArcDirection16    (GDI.525)
1000  */
1001 INT16 WINAPI SetArcDirection16( HDC16 hdc, INT16 nDirection )
1002 {
1003     return SetArcDirection( (HDC)hdc, (INT)nDirection );
1004 }
1005
1006
1007 /***********************************************************************
1008  *           SetArcDirection    (GDI32.302)
1009  */
1010 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1011 {
1012     DC * dc;
1013     INT nOldDirection = 0;
1014
1015     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1016     {
1017         SetLastError(ERROR_INVALID_PARAMETER);
1018         return 0;
1019     }
1020
1021     if ((dc = DC_GetDCPtr( hdc )))
1022     {
1023         nOldDirection = dc->ArcDirection;
1024         dc->ArcDirection = nDirection;
1025         GDI_ReleaseObj( hdc );
1026     }
1027     return nOldDirection;
1028 }
1029
1030
1031 /***********************************************************************
1032  *           GetWorldTransform    (GDI32.244)
1033  */
1034 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1035 {
1036     DC * dc;
1037     if (!xform) return FALSE;
1038     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1039     *xform = dc->xformWorld2Wnd;
1040     GDI_ReleaseObj( hdc );
1041     return TRUE;
1042 }
1043
1044
1045 /***********************************************************************
1046  *           SetWorldTransform    (GDI32.346)
1047  */
1048 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1049 {
1050     BOOL ret = FALSE;
1051     DC *dc = DC_GetDCPtr( hdc );
1052
1053     if (!dc) return FALSE;
1054     if (!xform) goto done;
1055
1056     /* Check that graphics mode is GM_ADVANCED */
1057     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1058
1059     dc->xformWorld2Wnd = *xform;
1060     DC_UpdateXforms( dc );
1061     ret = TRUE;
1062  done:
1063     GDI_ReleaseObj( hdc );
1064     return ret;
1065 }
1066
1067
1068 /****************************************************************************
1069  * ModifyWorldTransform [GDI32.253]
1070  * Modifies the world transformation for a device context.
1071  *
1072  * PARAMS
1073  *    hdc   [I] Handle to device context
1074  *    xform [I] XFORM structure that will be used to modify the world
1075  *              transformation
1076  *    iMode [I] Specifies in what way to modify the world transformation
1077  *              Possible values:
1078  *              MWT_IDENTITY
1079  *                 Resets the world transformation to the identity matrix.
1080  *                 The parameter xform is ignored.
1081  *              MWT_LEFTMULTIPLY
1082  *                 Multiplies xform into the world transformation matrix from
1083  *                 the left.
1084  *              MWT_RIGHTMULTIPLY
1085  *                 Multiplies xform into the world transformation matrix from
1086  *                 the right.
1087  *
1088  * RETURNS STD
1089  */
1090 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1091     DWORD iMode )
1092 {
1093     BOOL ret = FALSE;
1094     DC *dc = DC_GetDCPtr( hdc );
1095
1096     /* Check for illegal parameters */
1097     if (!dc) return FALSE;
1098     if (!xform) goto done;
1099
1100     /* Check that graphics mode is GM_ADVANCED */
1101     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1102
1103     switch (iMode)
1104     {
1105         case MWT_IDENTITY:
1106             dc->xformWorld2Wnd.eM11 = 1.0f;
1107             dc->xformWorld2Wnd.eM12 = 0.0f;
1108             dc->xformWorld2Wnd.eM21 = 0.0f;
1109             dc->xformWorld2Wnd.eM22 = 1.0f;
1110             dc->xformWorld2Wnd.eDx  = 0.0f;
1111             dc->xformWorld2Wnd.eDy  = 0.0f;
1112             break;
1113         case MWT_LEFTMULTIPLY:
1114             CombineTransform( &dc->xformWorld2Wnd, xform,
1115                 &dc->xformWorld2Wnd );
1116             break;
1117         case MWT_RIGHTMULTIPLY:
1118             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1119                 xform );
1120             break;
1121         default:
1122             goto done;
1123     }
1124
1125     DC_UpdateXforms( dc );
1126     ret = TRUE;
1127  done:
1128     GDI_ReleaseObj( hdc );
1129     return ret;
1130 }
1131
1132
1133 /****************************************************************************
1134  * CombineTransform [GDI32.20]
1135  * Combines two transformation matrices.
1136  *
1137  * PARAMS
1138  *    xformResult [O] Stores the result of combining the two matrices
1139  *    xform1      [I] Specifies the first matrix to apply
1140  *    xform2      [I] Specifies the second matrix to apply
1141  *
1142  * REMARKS
1143  *    The same matrix can be passed in for more than one of the parameters.
1144  *
1145  * RETURNS STD
1146  */
1147 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1148     const XFORM *xform2 )
1149 {
1150     XFORM xformTemp;
1151
1152     /* Check for illegal parameters */
1153     if (!xformResult || !xform1 || !xform2)
1154         return FALSE;
1155
1156     /* Create the result in a temporary XFORM, since xformResult may be
1157      * equal to xform1 or xform2 */
1158     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1159                      xform1->eM12 * xform2->eM21;
1160     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1161                      xform1->eM12 * xform2->eM22;
1162     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1163                      xform1->eM22 * xform2->eM21;
1164     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1165                      xform1->eM22 * xform2->eM22;
1166     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1167                      xform1->eDy  * xform2->eM21 +
1168                      xform2->eDx;
1169     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1170                      xform1->eDy  * xform2->eM22 +
1171                      xform2->eDy;
1172
1173     /* Copy the result to xformResult */
1174     *xformResult = xformTemp;
1175
1176     return TRUE;
1177 }
1178
1179
1180 /***********************************************************************
1181  *           SetDCHook   (GDI.190)
1182  */
1183 /* ### start build ### */
1184 extern WORD CALLBACK GDI_CallTo16_word_wwll(FARPROC16,WORD,WORD,LONG,LONG);
1185 /* ### stop build ### */
1186 BOOL16 WINAPI SetDCHook( HDC16 hdc, FARPROC16 hookProc, DWORD dwHookData )
1187 {
1188     DC *dc = DC_GetDCPtr( hdc );
1189     if (!dc) return FALSE;
1190
1191     /*
1192      * Note: We store the original SEGPTR 'hookProc' as we need to be
1193      *       able to return it verbatim in GetDCHook,
1194      *
1195      *       On the other hand, we still call THUNK_Alloc and store the
1196      *       32-bit thunk into another DC member, because THUNK_Alloc
1197      *       recognizes the (typical) case that the 'hookProc' is indeed
1198      *       the 16-bit API entry point of a built-in routine (e.g. DCHook16)
1199      *
1200      *       We could perform that test every time the hook is about to
1201      *       be called (or else we could live with the 32->16->32 detour),
1202      *       but this way is the most efficient ...
1203      */
1204
1205     dc->hookProc = hookProc;
1206     dc->dwHookData = dwHookData;
1207
1208     THUNK_Free( (FARPROC)dc->hookThunk );
1209     dc->hookThunk = (DCHOOKPROC)
1210                     THUNK_Alloc( hookProc, (RELAY)GDI_CallTo16_word_wwll );
1211
1212     GDI_ReleaseObj( hdc );
1213     return TRUE;
1214 }
1215
1216
1217 /***********************************************************************
1218  *           GetDCHook   (GDI.191)
1219  */
1220 DWORD WINAPI GetDCHook( HDC16 hdc, FARPROC16 *phookProc )
1221 {
1222     DC *dc = DC_GetDCPtr( hdc );
1223     if (!dc) return 0;
1224     *phookProc = dc->hookProc;
1225     GDI_ReleaseObj( hdc );
1226     return dc->dwHookData;
1227 }
1228
1229
1230 /***********************************************************************
1231  *           SetHookFlags       (GDI.192)
1232  */
1233 WORD WINAPI SetHookFlags16(HDC16 hDC, WORD flags)
1234 {
1235     DC *dc = DC_GetDCPtr( hDC );
1236
1237     if( dc )
1238     {
1239         WORD wRet = dc->flags & DC_DIRTY;
1240
1241         /* "Undocumented Windows" info is slightly confusing.
1242          */
1243
1244         TRACE("hDC %04x, flags %04x\n",hDC,flags);
1245
1246         if( flags & DCHF_INVALIDATEVISRGN )
1247             dc->flags |= DC_DIRTY;
1248         else if( flags & DCHF_VALIDATEVISRGN || !flags )
1249             dc->flags &= ~DC_DIRTY;
1250         GDI_ReleaseObj( hDC );
1251         return wRet;
1252     }
1253     return 0;
1254 }
1255
1256 /***********************************************************************
1257  *           SetICMMode    (GDI32.318)
1258  */
1259 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1260 {
1261 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1262     if (iEnableICM == ICM_OFF) return ICM_OFF;
1263     if (iEnableICM == ICM_ON) return 0;
1264     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1265     return 0;
1266 }
1267
1268 /***********************************************************************
1269  *           GetDeviceGammaRamp    (GDI32.*)
1270  */
1271 BOOL WINAPI GetDeviceGammaRamp(HDC hdc,LPVOID ptr) {
1272     FIXME("(%x,%p), empty stub!\n",hdc,ptr);
1273     return FALSE;
1274 }
1275
1276 /***********************************************************************
1277  *           GetColorSpace    (GDI32.165)
1278  */
1279 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1280 {
1281 /*FIXME    Need to to whatever GetColorSpace actually does */
1282     return 0;
1283 }
1284
1285 /***********************************************************************
1286  *           CreateColorSpaceA    (GDI32.???)
1287  */
1288 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1289 {
1290   FIXME( "stub\n" );
1291   return 0;
1292 }
1293
1294 /***********************************************************************
1295  *           CreateColorSpaceW    (GDI32.???)
1296  */
1297 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1298 {
1299   FIXME( "stub\n" );
1300   return 0;
1301 }
1302
1303 /***********************************************************************
1304  *           DeleteColorSpace     (GDI32.???)
1305  */
1306 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1307 {
1308   FIXME( "stub\n" );
1309
1310   return TRUE;
1311 }
1312
1313 /***********************************************************************
1314  *           SetColorSpace     (GDI32.???)
1315  */
1316 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1317 {
1318   FIXME( "stub\n" );
1319
1320   return hColorSpace;
1321 }
1322
1323 /***********************************************************************
1324  *           GetBoundsRect16    (GDI.194)
1325  */
1326 UINT16 WINAPI GetBoundsRect16(HDC16 hdc, LPRECT16 rect, UINT16 flags)
1327 {
1328     return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1329 }
1330
1331 /***********************************************************************
1332  *           GetBoundsRect    (GDI32.147)
1333  */
1334 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1335 {
1336     FIXME("(): stub\n");
1337     return DCB_RESET;   /* bounding rectangle always empty */
1338 }
1339
1340 /***********************************************************************
1341  *           SetBoundsRect16    (GDI.193)
1342  */
1343 UINT16 WINAPI SetBoundsRect16(HDC16 hdc, const RECT16* rect, UINT16 flags)
1344 {
1345     if ( (flags & DCB_ACCUMULATE) || (flags & DCB_ENABLE) )
1346         FIXME("(%04x, %p, %04x): stub\n", hdc, rect, flags );
1347
1348     return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1349 }
1350
1351 /***********************************************************************
1352  *           SetBoundsRect    (GDI32.307)
1353  */
1354 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1355 {
1356     FIXME("(): stub\n");
1357     return DCB_DISABLE;   /* bounding rectangle always empty */
1358 }
1359
1360
1361 /***********************************************************************
1362  *              GetRelAbs               (GDI32.218)
1363  */
1364 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1365 {
1366     INT ret = 0;
1367     DC *dc = DC_GetDCPtr( hdc );
1368     if (dc) ret = dc->relAbsMode;
1369     GDI_ReleaseObj( hdc );
1370     return ret;
1371 }
1372
1373 /***********************************************************************
1374  *           Death    (GDI.121)
1375  *
1376  * Disables GDI, switches back to text mode.
1377  * We don't have to do anything here,
1378  * just let console support handle everything
1379  */
1380 void WINAPI Death16(HDC16 hDC)
1381 {
1382     MESSAGE("Death(%04x) called. Application enters text mode...\n", hDC);
1383 }
1384
1385 /***********************************************************************
1386  *           Resurrection    (GDI.122)
1387  *
1388  * Restores GDI functionality
1389  */
1390 void WINAPI Resurrection16(HDC16 hDC,
1391                            WORD w1, WORD w2, WORD w3, WORD w4, WORD w5, WORD w6)
1392 {
1393     MESSAGE("Resurrection(%04x, %04x, %04x, %04x, %04x, %04x, %04x) called. Application left text mode.\n", hDC, w1, w2, w3, w4, w5, w6);
1394 }
1395
1396 /***********************************************************************
1397  *           GetLayout    (GDI32.321)
1398  *
1399  * Gets left->right or right->left text layout flags of a dc.
1400  * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1401  *
1402  */
1403 DWORD WINAPI GetLayout(HDC hdc)
1404 {
1405     FIXME("(%08x): stub\n", hdc);
1406     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1407     return 0;
1408 }
1409
1410 /***********************************************************************
1411  *           SetLayout    (GDI32.450)
1412  *
1413  * Sets left->right or right->left text layout flags of a dc.
1414  * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1415  *
1416  */
1417 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1418 {
1419     FIXME("(%08x,%08lx): stub\n", hdc, layout);
1420     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1421     return 0;
1422 }