objects/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winreg.h"
  30 #include "winternl.h"
  31 #include "winerror.h"
  32 #include "wownt32.h"
  33 #include "wine/winuser16.h"
  34 #include "gdi.h"
  35 #include "heap.h"
  36 #include "wine/unicode.h"
  37 #include "wine/debug.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  40
  41 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj );
  42
  43 static const struct gdi_obj_funcs dc_funcs =
  44 {
  45     NULL,             /* pSelectObject */
  46     NULL,             /* pGetObject16 */
  47     NULL,             /* pGetObjectA */
  48     NULL,             /* pGetObjectW */
  49     NULL,             /* pUnrealizeObject */
  50     DC_DeleteObject   /* pDeleteObject */
  51 };
  52
  53 /***********************************************************************
  54  *           DC_AllocDC
  55  */
  56 DC *DC_AllocDC( const DC_FUNCTIONS *funcs, WORD magic )
  57 {
  58     HDC hdc;
  59     DC *dc;
  60
  61     if (!(dc = GDI_AllocObject( sizeof(*dc), magic, (HGDIOBJ*)&hdc, &dc_funcs ))) return NULL;
  62
  63     dc->hSelf               = hdc;
  64     dc->funcs               = funcs;
  65     dc->physDev             = NULL;
  66     dc->saveLevel           = 0;
  67     dc->dwHookData          = 0;
  68     dc->hookProc            = NULL;
  69     dc->hookThunk           = NULL;
  70     dc->wndOrgX             = 0;
  71     dc->wndOrgY             = 0;
  72     dc->wndExtX             = 1;
  73     dc->wndExtY             = 1;
  74     dc->vportOrgX           = 0;
  75     dc->vportOrgY           = 0;
  76     dc->vportExtX           = 1;
  77     dc->vportExtY           = 1;
  78     dc->flags               = 0;
  79     dc->hClipRgn            = 0;
  80     dc->hVisRgn             = 0;
  81     dc->hGCClipRgn          = 0;
  82     dc->hPen                = GetStockObject( BLACK_PEN );
  83     dc->hBrush              = GetStockObject( WHITE_BRUSH );
  84     dc->hFont               = GetStockObject( SYSTEM_FONT );
  85     dc->hBitmap             = 0;
  86     dc->hDevice             = 0;
  87     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
  88     dc->gdiFont             = 0;
  89     dc->ROPmode             = R2_COPYPEN;
  90     dc->polyFillMode        = ALTERNATE;
  91     dc->stretchBltMode      = BLACKONWHITE;
  92     dc->relAbsMode          = ABSOLUTE;
  93     dc->backgroundMode      = OPAQUE;
  94     dc->backgroundColor     = RGB( 255, 255, 255 );
  95     dc->textColor           = RGB( 0, 0, 0 );
  96     dc->brushOrgX           = 0;
  97     dc->brushOrgY           = 0;
  98     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
  99     dc->charExtra           = 0;
 100     dc->breakTotalExtra     = 0;
 101     dc->breakCount          = 0;
 102     dc->breakExtra          = 0;
 103     dc->breakRem            = 0;
 104     dc->totalExtent.left    = 0;
 105     dc->totalExtent.top     = 0;
 106     dc->totalExtent.right   = 0;
 107     dc->totalExtent.bottom  = 0;
 108     dc->bitsPerPixel        = 1;
 109     dc->MapMode             = MM_TEXT;
 110     dc->GraphicsMode        = GM_COMPATIBLE;
 111     dc->pAbortProc          = NULL;
 112     dc->CursPosX            = 0;
 113     dc->CursPosY            = 0;
 114     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 115     dc->xformWorld2Wnd.eM11 = 1.0f;
 116     dc->xformWorld2Wnd.eM12 = 0.0f;
 117     dc->xformWorld2Wnd.eM21 = 0.0f;
 118     dc->xformWorld2Wnd.eM22 = 1.0f;
 119     dc->xformWorld2Wnd.eDx  = 0.0f;
 120     dc->xformWorld2Wnd.eDy  = 0.0f;
 121     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 122     dc->xformVport2World    = dc->xformWorld2Wnd;
 123     dc->vport2WorldValid    = TRUE;
 124     PATH_InitGdiPath(&dc->path);
 125     return dc;
 126 }
 127
 128
 129
 130 /***********************************************************************
 131  *           DC_GetDCPtr
 132  */
 133 DC *DC_GetDCPtr( HDC hdc )
 134 {
 135     GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
 136     if (!ptr) return NULL;
 137     if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
 138         (GDIMAGIC(ptr->wMagic) == MEMORY_DC_MAGIC) ||
 139         (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
 140         (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
 141         return (DC *)ptr;
 142     GDI_ReleaseObj( hdc );
 143     SetLastError( ERROR_INVALID_HANDLE );
 144     return NULL;
 145 }
 146
 147 /***********************************************************************
 148  *           DC_GetDCUpdate
 149  *
 150  * Retrieve a DC ptr while making sure the visRgn is updated.
 151  * This function may call up to USER so the GDI lock should _not_
 152  * be held when calling it.
 153  */
 154 DC *DC_GetDCUpdate( HDC hdc )
 155 {
 156     DC *dc = DC_GetDCPtr( hdc );
 157     if (!dc) return NULL;
 158     while (dc->flags & DC_DIRTY)
 159     {
 160         DCHOOKPROC proc = dc->hookThunk;
 161         dc->flags &= ~DC_DIRTY;
 162         if (proc)
 163         {
 164             DWORD data = dc->dwHookData;
 165             GDI_ReleaseObj( hdc );
 166             proc( HDC_16(hdc), DCHC_INVALIDVISRGN, data, 0 );
 167             if (!(dc = DC_GetDCPtr( hdc ))) break;
 168             /* otherwise restart the loop in case it became dirty again in the meantime */
 169         }
 170     }
 171     return dc;
 172 }
 173
 174
 175 /***********************************************************************
 176  *           DC_DeleteObject
 177  */
 178 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj )
 179 {
 180     GDI_ReleaseObj( handle );
 181     return DeleteDC( handle );
 182 }
 183
 184
 185 /***********************************************************************
 186  *           DC_InitDC
 187  *
 188  * Setup device-specific DC values for a newly created DC.
 189  */
 190 void DC_InitDC( DC* dc )
 191 {
 192     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 193     SetTextColor( dc->hSelf, dc->textColor );
 194     SetBkColor( dc->hSelf, dc->backgroundColor );
 195     SelectObject( dc->hSelf, dc->hPen );
 196     SelectObject( dc->hSelf, dc->hBrush );
 197     SelectObject( dc->hSelf, dc->hFont );
 198     CLIPPING_UpdateGCRegion( dc );
 199 }
 200
 201
 202 /***********************************************************************
 203  *           DC_InvertXform
 204  *
 205  * Computes the inverse of the transformation xformSrc and stores it to
 206  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 207  * is singular.
 208  */
 209 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 210 {
 211     FLOAT determinant;
 212
 213     determinant = xformSrc->eM11*xformSrc->eM22 -
 214         xformSrc->eM12*xformSrc->eM21;
 215     if (determinant > -1e-12 && determinant < 1e-12)
 216         return FALSE;
 217
 218     xformDest->eM11 =  xformSrc->eM22 / determinant;
 219     xformDest->eM12 = -xformSrc->eM12 / determinant;
 220     xformDest->eM21 = -xformSrc->eM21 / determinant;
 221     xformDest->eM22 =  xformSrc->eM11 / determinant;
 222     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 223                        xformSrc->eDy * xformDest->eM21;
 224     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 225                        xformSrc->eDy * xformDest->eM22;
 226
 227     return TRUE;
 228 }
 229
 230
 231 /***********************************************************************
 232  *           DC_UpdateXforms
 233  *
 234  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 235  * fields of the specified DC by creating a transformation that
 236  * represents the current mapping mode and combining it with the DC's
 237  * world transform. This function should be called whenever the
 238  * parameters associated with the mapping mode (window and viewport
 239  * extents and origins) or the world transform change.
 240  */
 241 void DC_UpdateXforms( DC *dc )
 242 {
 243     XFORM xformWnd2Vport;
 244     FLOAT scaleX, scaleY;
 245
 246     /* Construct a transformation to do the window-to-viewport conversion */
 247     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 248     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 249     xformWnd2Vport.eM11 = scaleX;
 250     xformWnd2Vport.eM12 = 0.0;
 251     xformWnd2Vport.eM21 = 0.0;
 252     xformWnd2Vport.eM22 = scaleY;
 253     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 254         scaleX * (FLOAT)dc->wndOrgX;
 255     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 256         scaleY * (FLOAT)dc->wndOrgY;
 257
 258     /* Combine with the world transformation */
 259     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 260         &xformWnd2Vport );
 261
 262     /* Create inverse of world-to-viewport transformation */
 263     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 264         &dc->xformVport2World );
 265
 266     /* Reselect the font back into the dc so that the font size
 267        gets updated. */
 268     SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 269 }
 270
 271
 272 /***********************************************************************
 273  *           GetDCState   (Not a Windows API)
 274  */
 275 HDC WINAPI GetDCState( HDC hdc )
 276 {
 277     DC * newdc, * dc;
 278     HGDIOBJ handle;
 279
 280     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 281     if (!(newdc = GDI_AllocObject( sizeof(DC), GDIMAGIC(dc->header.wMagic), &handle, &dc_funcs )))
 282     {
 283       GDI_ReleaseObj( hdc );
 284       return 0;
 285     }
 286     TRACE("(%p): returning %p\n", hdc, handle );
 287
 288     newdc->flags            = dc->flags | DC_SAVED;
 289     newdc->hPen             = dc->hPen;
 290     newdc->hBrush           = dc->hBrush;
 291     newdc->hFont            = dc->hFont;
 292     newdc->hBitmap          = dc->hBitmap;
 293     newdc->hDevice          = dc->hDevice;
 294     newdc->hPalette         = dc->hPalette;
 295     newdc->totalExtent      = dc->totalExtent;
 296     newdc->bitsPerPixel     = dc->bitsPerPixel;
 297     newdc->ROPmode          = dc->ROPmode;
 298     newdc->polyFillMode     = dc->polyFillMode;
 299     newdc->stretchBltMode   = dc->stretchBltMode;
 300     newdc->relAbsMode       = dc->relAbsMode;
 301     newdc->backgroundMode   = dc->backgroundMode;
 302     newdc->backgroundColor  = dc->backgroundColor;
 303     newdc->textColor        = dc->textColor;
 304     newdc->brushOrgX        = dc->brushOrgX;
 305     newdc->brushOrgY        = dc->brushOrgY;
 306     newdc->textAlign        = dc->textAlign;
 307     newdc->charExtra        = dc->charExtra;
 308     newdc->breakTotalExtra  = dc->breakTotalExtra;
 309     newdc->breakCount       = dc->breakCount;
 310     newdc->breakExtra       = dc->breakExtra;
 311     newdc->breakRem         = dc->breakRem;
 312     newdc->MapMode          = dc->MapMode;
 313     newdc->GraphicsMode     = dc->GraphicsMode;
 314     newdc->CursPosX         = dc->CursPosX;
 315     newdc->CursPosY         = dc->CursPosY;
 316     newdc->ArcDirection     = dc->ArcDirection;
 317     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 318     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 319     newdc->xformVport2World = dc->xformVport2World;
 320     newdc->vport2WorldValid = dc->vport2WorldValid;
 321     newdc->wndOrgX          = dc->wndOrgX;
 322     newdc->wndOrgY          = dc->wndOrgY;
 323     newdc->wndExtX          = dc->wndExtX;
 324     newdc->wndExtY          = dc->wndExtY;
 325     newdc->vportOrgX        = dc->vportOrgX;
 326     newdc->vportOrgY        = dc->vportOrgY;
 327     newdc->vportExtX        = dc->vportExtX;
 328     newdc->vportExtY        = dc->vportExtY;
 329
 330     newdc->hSelf = (HDC)handle;
 331     newdc->saveLevel = 0;
 332
 333     PATH_InitGdiPath( &newdc->path );
 334
 335     newdc->pAbortProc = NULL;
 336     newdc->hookThunk  = NULL;
 337     newdc->hookProc   = 0;
 338
 339     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 340
 341     newdc->hGCClipRgn = newdc->hVisRgn = 0;
 342     if (dc->hClipRgn)
 343     {
 344         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 345         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 346     }
 347     else
 348         newdc->hClipRgn = 0;
 349
 350     if(dc->gdiFont) {
 351         newdc->gdiFont = dc->gdiFont;
 352     } else
 353         newdc->gdiFont = 0;
 354
 355     GDI_ReleaseObj( handle );
 356     GDI_ReleaseObj( hdc );
 357     return handle;
 358 }
 359
 360
 361 /***********************************************************************
 362  *           SetDCState   (Not a Windows API)
 363  */
 364 void WINAPI SetDCState( HDC hdc, HDC hdcs )
 365 {
 366     DC *dc, *dcs;
 367
 368     if (!(dc = DC_GetDCUpdate( hdc ))) return;
 369     if (!(dcs = DC_GetDCPtr( hdcs )))
 370     {
 371       GDI_ReleaseObj( hdc );
 372       return;
 373     }
 374     if (!dcs->flags & DC_SAVED)
 375     {
 376       GDI_ReleaseObj( hdc );
 377       GDI_ReleaseObj( hdcs );
 378       return;
 379     }
 380     TRACE("%p %p\n", hdc, hdcs );
 381
 382     dc->flags            = dcs->flags & ~(DC_SAVED | DC_DIRTY);
 383     dc->hDevice          = dcs->hDevice;
 384     dc->totalExtent      = dcs->totalExtent;
 385     dc->ROPmode          = dcs->ROPmode;
 386     dc->polyFillMode     = dcs->polyFillMode;
 387     dc->stretchBltMode   = dcs->stretchBltMode;
 388     dc->relAbsMode       = dcs->relAbsMode;
 389     dc->backgroundMode   = dcs->backgroundMode;
 390     dc->backgroundColor  = dcs->backgroundColor;
 391     dc->textColor        = dcs->textColor;
 392     dc->brushOrgX        = dcs->brushOrgX;
 393     dc->brushOrgY        = dcs->brushOrgY;
 394     dc->textAlign        = dcs->textAlign;
 395     dc->charExtra        = dcs->charExtra;
 396     dc->breakTotalExtra  = dcs->breakTotalExtra;
 397     dc->breakCount       = dcs->breakCount;
 398     dc->breakExtra       = dcs->breakExtra;
 399     dc->breakRem         = dcs->breakRem;
 400     dc->MapMode          = dcs->MapMode;
 401     dc->GraphicsMode     = dcs->GraphicsMode;
 402     dc->CursPosX         = dcs->CursPosX;
 403     dc->CursPosY         = dcs->CursPosY;
 404     dc->ArcDirection     = dcs->ArcDirection;
 405     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 406     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 407     dc->xformVport2World = dcs->xformVport2World;
 408     dc->vport2WorldValid = dcs->vport2WorldValid;
 409
 410     dc->wndOrgX          = dcs->wndOrgX;
 411     dc->wndOrgY          = dcs->wndOrgY;
 412     dc->wndExtX          = dcs->wndExtX;
 413     dc->wndExtY          = dcs->wndExtY;
 414     dc->vportOrgX        = dcs->vportOrgX;
 415     dc->vportOrgY        = dcs->vportOrgY;
 416     dc->vportExtX        = dcs->vportExtX;
 417     dc->vportExtY        = dcs->vportExtY;
 418
 419     if (GDIMAGIC(dc->header.wMagic) != MEMORY_DC_MAGIC) dc->bitsPerPixel = dcs->bitsPerPixel;
 420
 421     if (dcs->hClipRgn)
 422     {
 423         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 424         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 425     }
 426     else
 427     {
 428         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 429         dc->hClipRgn = 0;
 430     }
 431     CLIPPING_UpdateGCRegion( dc );
 432
 433     SelectObject( hdc, dcs->hBitmap );
 434     SelectObject( hdc, dcs->hBrush );
 435     SelectObject( hdc, dcs->hFont );
 436     SelectObject( hdc, dcs->hPen );
 437     SetBkColor( hdc, dcs->backgroundColor);
 438     SetTextColor( hdc, dcs->textColor);
 439     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 440     GDI_ReleaseObj( hdcs );
 441     GDI_ReleaseObj( hdc );
 442 }
 443
 444
 445 /***********************************************************************
 446  *           GetDCState   (GDI.179)
 447  */
 448 HDC16 WINAPI GetDCState16( HDC16 hdc )
 449 {
 450     return HDC_16( GetDCState( HDC_32(hdc) ));
 451 }
 452
 453
 454 /***********************************************************************
 455  *           SetDCState   (GDI.180)
 456  */
 457 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 458 {
 459     SetDCState( HDC_32(hdc), HDC_32(hdcs) );
 460 }
 461
 462
 463 /***********************************************************************
 464  *           SaveDC    (GDI32.@)
 465  */
 466 INT WINAPI SaveDC( HDC hdc )
 467 {
 468     HDC hdcs;
 469     DC * dc, * dcs;
 470     INT ret;
 471
 472     dc = DC_GetDCPtr( hdc );
 473     if (!dc) return 0;
 474
 475     if(dc->funcs->pSaveDC)
 476     {
 477         ret = dc->funcs->pSaveDC( dc->physDev );
 478         GDI_ReleaseObj( hdc );
 479         return ret;
 480     }
 481
 482     if (!(hdcs = GetDCState( hdc )))
 483     {
 484       GDI_ReleaseObj( hdc );
 485       return 0;
 486     }
 487     dcs = DC_GetDCPtr( hdcs );
 488
 489     /* Copy path. The reason why path saving / restoring is in SaveDC/
 490      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 491      * functions are only in Win16 (which doesn't have paths) and that
 492      * SetDCState doesn't allow us to signal an error (which can happen
 493      * when copying paths).
 494      */
 495     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 496     {
 497         GDI_ReleaseObj( hdc );
 498         GDI_ReleaseObj( hdcs );
 499         DeleteDC( hdcs );
 500         return 0;
 501     }
 502
 503     dcs->header.hNext = dc->header.hNext;
 504     dc->header.hNext = HDC_16(hdcs);
 505     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 506     ret = ++dc->saveLevel;
 507     GDI_ReleaseObj( hdcs );
 508     GDI_ReleaseObj( hdc );
 509     return ret;
 510 }
 511
 512
 513 /***********************************************************************
 514  *           RestoreDC    (GDI32.@)
 515  */
 516 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 517 {
 518     DC * dc, * dcs;
 519     BOOL success;
 520
 521     TRACE("%p %d\n", hdc, level );
 522     dc = DC_GetDCUpdate( hdc );
 523     if(!dc) return FALSE;
 524     if(dc->funcs->pRestoreDC)
 525     {
 526         success = dc->funcs->pRestoreDC( dc->physDev, level );
 527         GDI_ReleaseObj( hdc );
 528         return success;
 529     }
 530
 531     if (level == -1) level = dc->saveLevel;
 532     if ((level < 1)
 533             /* This pair of checks disagrees with MSDN "Platform SDK:
 534                Windows GDI" July 2000 which says all negative values
 535                for level will be interpreted as an instance relative
 536                to the current state.  Restricting it to just -1 does
 537                not satisfy this */
 538         || (level > dc->saveLevel))
 539     {
 540         GDI_ReleaseObj( hdc );
 541         return FALSE;
 542     }
 543
 544     success=TRUE;
 545     while (dc->saveLevel >= level)
 546     {
 547         HDC hdcs = HDC_32(dc->header.hNext);
 548         if (!(dcs = DC_GetDCPtr( hdcs )))
 549         {
 550           GDI_ReleaseObj( hdc );
 551           return FALSE;
 552         }
 553         dc->header.hNext = dcs->header.hNext;
 554         if (--dc->saveLevel < level)
 555         {
 556             SetDCState( hdc, hdcs );
 557             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 558                 /* FIXME: This might not be quite right, since we're
 559                  * returning FALSE but still destroying the saved DC state */
 560                 success=FALSE;
 561         }
 562         GDI_ReleaseObj( hdcs );
 563         GDI_ReleaseObj( hdc );
 564         DeleteDC( hdcs );
 565         if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 566     }
 567     GDI_ReleaseObj( hdc );
 568     return success;
 569 }
 570
 571
 572 /***********************************************************************
 573  *           CreateDCW    (GDI32.@)
 574  */
 575 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 576                       const DEVMODEW *initData )
 577 {
 578     HDC hdc;
 579     DC * dc;
 580     const DC_FUNCTIONS *funcs;
 581     WCHAR buf[300];
 582
 583     GDI_CheckNotLock();
 584
 585     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 586     {
 587         if (!driver) return 0;
 588         strcpyW(buf, driver);
 589     }
 590
 591     if (!(funcs = DRIVER_load_driver( buf )))
 592     {
 593         ERR( "no driver found for %s\n", debugstr_w(buf) );
 594         return 0;
 595     }
 596     if (!(dc = DC_AllocDC( funcs, DC_MAGIC )))
 597     {
 598         DRIVER_release_driver( funcs );
 599         return 0;
 600     }
 601
 602     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 603
 604     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 605           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 606
 607     if (dc->funcs->pCreateDC &&
 608         !dc->funcs->pCreateDC( dc, &dc->physDev, buf, device, output, initData ))
 609     {
 610         WARN("creation aborted by device\n" );
 611         GDI_FreeObject( dc->hSelf, dc );
 612         DRIVER_release_driver( funcs );
 613         return 0;
 614     }
 615
 616     dc->totalExtent.left   = 0;
 617     dc->totalExtent.top    = 0;
 618     dc->totalExtent.right  = GetDeviceCaps( dc->hSelf, HORZRES );
 619     dc->totalExtent.bottom = GetDeviceCaps( dc->hSelf, VERTRES );
 620     dc->hVisRgn = CreateRectRgnIndirect( &dc->totalExtent );
 621
 622     DC_InitDC( dc );
 623     hdc = dc->hSelf;
 624     GDI_ReleaseObj( hdc );
 625     return hdc;
 626 }
 627
 628
 629 /***********************************************************************
 630  *           CreateDCA    (GDI32.@)
 631  */
 632 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 633                       const DEVMODEA *initData )
 634 {
 635     UNICODE_STRING driverW, deviceW, outputW;
 636     DEVMODEW *initDataW;
 637     HDC ret;
 638
 639     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 640     else driverW.Buffer = NULL;
 641
 642     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 643     else deviceW.Buffer = NULL;
 644
 645     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 646     else outputW.Buffer = NULL;
 647
 648     if (initData) initDataW = GdiConvertToDevmodeW(initData);
 649     else initDataW = NULL;
 650
 651     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 652
 653     RtlFreeUnicodeString(&driverW);
 654     RtlFreeUnicodeString(&deviceW);
 655     RtlFreeUnicodeString(&outputW);
 656     if (initDataW) HeapFree(GetProcessHeap(), 0, initDataW);
 657     return ret;
 658 }
 659
 660
 661 /***********************************************************************
 662  *           CreateICA    (GDI32.@)
 663  */
 664 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 665                           const DEVMODEA* initData )
 666 {
 667       /* Nothing special yet for ICs */
 668     return CreateDCA( driver, device, output, initData );
 669 }
 670
 671
 672 /***********************************************************************
 673  *           CreateICW    (GDI32.@)
 674  */
 675 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 676                           const DEVMODEW* initData )
 677 {
 678       /* Nothing special yet for ICs */
 679     return CreateDCW( driver, device, output, initData );
 680 }
 681
 682
 683 /***********************************************************************
 684  *           CreateCompatibleDC   (GDI32.@)
 685  */
 686 HDC WINAPI CreateCompatibleDC( HDC hdc )
 687 {
 688     DC *dc, *origDC;
 689     const DC_FUNCTIONS *funcs;
 690     PHYSDEV physDev;
 691
 692     GDI_CheckNotLock();
 693
 694     if ((origDC = GDI_GetObjPtr( hdc, DC_MAGIC )))
 695     {
 696         funcs = origDC->funcs;
 697         physDev = origDC->physDev;
 698         GDI_ReleaseObj( hdc ); /* can't hold the lock while loading the driver */
 699         funcs = DRIVER_get_driver( funcs );
 700     }
 701     else
 702     {
 703         static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
 704         funcs = DRIVER_load_driver( displayW );
 705         physDev = NULL;
 706     }
 707
 708     if (!funcs) return 0;
 709
 710     if (!(dc = DC_AllocDC( funcs, MEMORY_DC_MAGIC )))
 711     {
 712         DRIVER_release_driver( funcs );
 713         return 0;
 714     }
 715
 716     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 717
 718     dc->bitsPerPixel = 1;
 719     dc->hBitmap      = GetStockObject( DEFAULT_BITMAP );
 720
 721     /* Copy the driver-specific physical device info into
 722      * the new DC. The driver may use this read-only info
 723      * while creating the compatible DC below. */
 724     dc->physDev = physDev;
 725
 726     if (dc->funcs->pCreateDC &&
 727         !dc->funcs->pCreateDC( dc, &dc->physDev, NULL, NULL, NULL, NULL ))
 728     {
 729         WARN("creation aborted by device\n");
 730         GDI_FreeObject( dc->hSelf, dc );
 731         DRIVER_release_driver( funcs );
 732         return 0;
 733     }
 734
 735     dc->totalExtent.left   = 0;
 736     dc->totalExtent.top    = 0;
 737     dc->totalExtent.right  = 1;  /* default bitmap is 1x1 */
 738     dc->totalExtent.bottom = 1;
 739     dc->hVisRgn = CreateRectRgnIndirect( &dc->totalExtent );
 740
 741     DC_InitDC( dc );
 742     GDI_ReleaseObj( dc->hSelf );
 743     return dc->hSelf;
 744 }
 745
 746
 747 /***********************************************************************
 748  *           DeleteDC    (GDI32.@)
 749  */
 750 BOOL WINAPI DeleteDC( HDC hdc )
 751 {
 752     const DC_FUNCTIONS *funcs = NULL;
 753     DC * dc;
 754
 755     TRACE("%p\n", hdc );
 756
 757     GDI_CheckNotLock();
 758
 759     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 760
 761     /* Call hook procedure to check whether is it OK to delete this DC */
 762     if (dc->hookThunk)
 763     {
 764         DCHOOKPROC proc = dc->hookThunk;
 765         DWORD data = dc->dwHookData;
 766         GDI_ReleaseObj( hdc );
 767         if (!proc( HDC_16(hdc), DCHC_DELETEDC, data, 0 )) return FALSE;
 768         if (!(dc = DC_GetDCPtr( hdc ))) return TRUE;  /* deleted by the hook */
 769     }
 770
 771     while (dc->saveLevel)
 772     {
 773         DC * dcs;
 774         HDC hdcs = HDC_32(dc->header.hNext);
 775         if (!(dcs = DC_GetDCPtr( hdcs ))) break;
 776         dc->header.hNext = dcs->header.hNext;
 777         dc->saveLevel--;
 778         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 779         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 780         if (dcs->hGCClipRgn) DeleteObject( dcs->hGCClipRgn );
 781         PATH_DestroyGdiPath(&dcs->path);
 782         GDI_FreeObject( hdcs, dcs );
 783     }
 784
 785     if (!(dc->flags & DC_SAVED))
 786     {
 787         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 788         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 789         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 790         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 791         funcs = dc->funcs;
 792         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 793         dc->physDev = NULL;
 794     }
 795
 796     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 797     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 798     if (dc->hGCClipRgn) DeleteObject( dc->hGCClipRgn );
 799     PATH_DestroyGdiPath(&dc->path);
 800
 801     GDI_FreeObject( hdc, dc );
 802     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 803     return TRUE;
 804 }
 805
 806
 807 /***********************************************************************
 808  *           ResetDCA    (GDI32.@)
 809  */
 810 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 811 {
 812     DC *dc;
 813     HDC ret = hdc;
 814
 815     if ((dc = DC_GetDCPtr( hdc )))
 816     {
 817         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 818         GDI_ReleaseObj( hdc );
 819     }
 820     return ret;
 821 }
 822
 823
 824 /***********************************************************************
 825  *           ResetDCW    (GDI32.@)
 826  */
 827 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 828 {
 829     return ResetDCA(hdc, (const DEVMODEA*)devmode); /* FIXME */
 830 }
 831
 832
 833 /***********************************************************************
 834  *           GetDeviceCaps    (GDI32.@)
 835  */
 836 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 837 {
 838     DC *dc;
 839     INT ret = 0;
 840
 841     if ((dc = DC_GetDCPtr( hdc )))
 842     {
 843         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 844         GDI_ReleaseObj( hdc );
 845     }
 846     return ret;
 847 }
 848
 849
 850 /***********************************************************************
 851  *           SetBkColor    (GDI32.@)
 852  */
 853 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 854 {
 855     COLORREF oldColor;
 856     DC * dc = DC_GetDCPtr( hdc );
 857
 858     if (!dc) return CLR_INVALID;
 859     oldColor = dc->backgroundColor;
 860     if (dc->funcs->pSetBkColor)
 861     {
 862         color = dc->funcs->pSetBkColor(dc->physDev, color);
 863         if (color == CLR_INVALID)  /* don't change it */
 864         {
 865             color = oldColor;
 866             oldColor = CLR_INVALID;
 867         }
 868     }
 869     dc->backgroundColor = color;
 870     GDI_ReleaseObj( hdc );
 871     return oldColor;
 872 }
 873
 874
 875 /***********************************************************************
 876  *           SetTextColor    (GDI32.@)
 877  */
 878 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 879 {
 880     COLORREF oldColor;
 881     DC * dc = DC_GetDCPtr( hdc );
 882
 883     if (!dc) return CLR_INVALID;
 884     oldColor = dc->textColor;
 885     if (dc->funcs->pSetTextColor)
 886     {
 887         color = dc->funcs->pSetTextColor(dc->physDev, color);
 888         if (color == CLR_INVALID)  /* don't change it */
 889         {
 890             color = oldColor;
 891             oldColor = CLR_INVALID;
 892         }
 893     }
 894     dc->textColor = color;
 895     GDI_ReleaseObj( hdc );
 896     return oldColor;
 897 }
 898
 899
 900 /***********************************************************************
 901  *           SetTextAlign    (GDI32.@)
 902  */
 903 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 904 {
 905     UINT prevAlign;
 906     DC *dc = DC_GetDCPtr( hdc );
 907     if (!dc) return 0x0;
 908     if (dc->funcs->pSetTextAlign)
 909         prevAlign = dc->funcs->pSetTextAlign(dc->physDev, align);
 910     else {
 911         prevAlign = dc->textAlign;
 912         dc->textAlign = align;
 913     }
 914     GDI_ReleaseObj( hdc );
 915     return prevAlign;
 916 }
 917
 918 /***********************************************************************
 919  *           GetDCOrgEx  (GDI32.@)
 920  */
 921 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
 922 {
 923     DC * dc;
 924
 925     if (!lpp) return FALSE;
 926     if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
 927
 928     lpp->x = lpp->y = 0;
 929     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
 930     GDI_ReleaseObj( hDC );
 931     return TRUE;
 932 }
 933
 934
 935 /***********************************************************************
 936  *           SetDCOrg   (GDI.117)
 937  */
 938 DWORD WINAPI SetDCOrg16( HDC16 hdc16, INT16 x, INT16 y )
 939 {
 940     DWORD prevOrg = 0;
 941     HDC hdc = HDC_32( hdc16 );
 942     DC *dc = DC_GetDCPtr( hdc );
 943     if (!dc) return 0;
 944     if (dc->funcs->pSetDCOrg) prevOrg = dc->funcs->pSetDCOrg( dc->physDev, x, y );
 945     GDI_ReleaseObj( hdc );
 946     return prevOrg;
 947 }
 948
 949
 950 /***********************************************************************
 951  *           SetGraphicsMode    (GDI32.@)
 952  */
 953 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
 954 {
 955     INT ret = 0;
 956     DC *dc = DC_GetDCPtr( hdc );
 957
 958     /* One would think that setting the graphics mode to GM_COMPATIBLE
 959      * would also reset the world transformation matrix to the unity
 960      * matrix. However, in Windows, this is not the case. This doesn't
 961      * make a lot of sense to me, but that's the way it is.
 962      */
 963     if (!dc) return 0;
 964     if ((mode > 0) && (mode <= GM_LAST))
 965     {
 966         ret = dc->GraphicsMode;
 967         dc->GraphicsMode = mode;
 968     }
 969     GDI_ReleaseObj( hdc );
 970     return ret;
 971 }
 972
 973
 974 /***********************************************************************
 975  *           SetArcDirection    (GDI32.@)
 976  */
 977 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
 978 {
 979     DC * dc;
 980     INT nOldDirection = 0;
 981
 982     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
 983     {
 984         SetLastError(ERROR_INVALID_PARAMETER);
 985         return 0;
 986     }
 987
 988     if ((dc = DC_GetDCPtr( hdc )))
 989     {
 990         nOldDirection = dc->ArcDirection;
 991         dc->ArcDirection = nDirection;
 992         GDI_ReleaseObj( hdc );
 993     }
 994     return nOldDirection;
 995 }
 996
 997
 998 /***********************************************************************
 999  *           GetWorldTransform    (GDI32.@)
1000  */
1001 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1002 {
1003     DC * dc;
1004     if (!xform) return FALSE;
1005     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1006     *xform = dc->xformWorld2Wnd;
1007     GDI_ReleaseObj( hdc );
1008     return TRUE;
1009 }
1010
1011
1012 /***********************************************************************
1013  *           GetTransform    (GDI32.@)
1014  */
1015 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1016 {
1017     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1018     ERR("stub: don't know what to do for code %lx\n", unknown );
1019     return FALSE;
1020 }
1021
1022
1023 /***********************************************************************
1024  *           SetWorldTransform    (GDI32.@)
1025  */
1026 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1027 {
1028     BOOL ret = FALSE;
1029     DC *dc = DC_GetDCPtr( hdc );
1030
1031     if (!dc) return FALSE;
1032     if (!xform) goto done;
1033
1034     /* Check that graphics mode is GM_ADVANCED */
1035     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1036
1037     if (dc->funcs->pSetWorldTransform)
1038     {
1039         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1040         if (!ret) goto done;
1041     }
1042
1043     dc->xformWorld2Wnd = *xform;
1044     DC_UpdateXforms( dc );
1045     ret = TRUE;
1046  done:
1047     GDI_ReleaseObj( hdc );
1048     return ret;
1049 }
1050
1051
1052 /****************************************************************************
1053  * ModifyWorldTransform [GDI32.@]
1054  * Modifies the world transformation for a device context.
1055  *
1056  * PARAMS
1057  *    hdc   [I] Handle to device context
1058  *    xform [I] XFORM structure that will be used to modify the world
1059  *              transformation
1060  *    iMode [I] Specifies in what way to modify the world transformation
1061  *              Possible values:
1062  *              MWT_IDENTITY
1063  *                 Resets the world transformation to the identity matrix.
1064  *                 The parameter xform is ignored.
1065  *              MWT_LEFTMULTIPLY
1066  *                 Multiplies xform into the world transformation matrix from
1067  *                 the left.
1068  *              MWT_RIGHTMULTIPLY
1069  *                 Multiplies xform into the world transformation matrix from
1070  *                 the right.
1071  *
1072  * RETURNS STD
1073  */
1074 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1075     DWORD iMode )
1076 {
1077     BOOL ret = FALSE;
1078     DC *dc = DC_GetDCPtr( hdc );
1079
1080     /* Check for illegal parameters */
1081     if (!dc) return FALSE;
1082     if (!xform) goto done;
1083
1084     /* Check that graphics mode is GM_ADVANCED */
1085     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1086
1087     if (dc->funcs->pModifyWorldTransform)
1088     {
1089         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1090         if (!ret) goto done;
1091     }
1092
1093     switch (iMode)
1094     {
1095         case MWT_IDENTITY:
1096             dc->xformWorld2Wnd.eM11 = 1.0f;
1097             dc->xformWorld2Wnd.eM12 = 0.0f;
1098             dc->xformWorld2Wnd.eM21 = 0.0f;
1099             dc->xformWorld2Wnd.eM22 = 1.0f;
1100             dc->xformWorld2Wnd.eDx  = 0.0f;
1101             dc->xformWorld2Wnd.eDy  = 0.0f;
1102             break;
1103         case MWT_LEFTMULTIPLY:
1104             CombineTransform( &dc->xformWorld2Wnd, xform,
1105                 &dc->xformWorld2Wnd );
1106             break;
1107         case MWT_RIGHTMULTIPLY:
1108             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1109                 xform );
1110             break;
1111         default:
1112             goto done;
1113     }
1114
1115     DC_UpdateXforms( dc );
1116     ret = TRUE;
1117  done:
1118     GDI_ReleaseObj( hdc );
1119     return ret;
1120 }
1121
1122
1123 /****************************************************************************
1124  * CombineTransform [GDI32.@]
1125  * Combines two transformation matrices.
1126  *
1127  * PARAMS
1128  *    xformResult [O] Stores the result of combining the two matrices
1129  *    xform1      [I] Specifies the first matrix to apply
1130  *    xform2      [I] Specifies the second matrix to apply
1131  *
1132  * REMARKS
1133  *    The same matrix can be passed in for more than one of the parameters.
1134  *
1135  * RETURNS STD
1136  */
1137 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1138     const XFORM *xform2 )
1139 {
1140     XFORM xformTemp;
1141
1142     /* Check for illegal parameters */
1143     if (!xformResult || !xform1 || !xform2)
1144         return FALSE;
1145
1146     /* Create the result in a temporary XFORM, since xformResult may be
1147      * equal to xform1 or xform2 */
1148     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1149                      xform1->eM12 * xform2->eM21;
1150     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1151                      xform1->eM12 * xform2->eM22;
1152     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1153                      xform1->eM22 * xform2->eM21;
1154     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1155                      xform1->eM22 * xform2->eM22;
1156     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1157                      xform1->eDy  * xform2->eM21 +
1158                      xform2->eDx;
1159     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1160                      xform1->eDy  * xform2->eM22 +
1161                      xform2->eDy;
1162
1163     /* Copy the result to xformResult */
1164     *xformResult = xformTemp;
1165
1166     return TRUE;
1167 }
1168
1169
1170 /***********************************************************************
1171  *           SetDCHook   (GDI32.@)
1172  *
1173  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1174  */
1175 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD dwHookData )
1176 {
1177     DC *dc = GDI_GetObjPtr( hdc, DC_MAGIC );
1178
1179     if (!dc) return FALSE;
1180
1181     if (!(dc->flags & DC_SAVED))
1182     {
1183         dc->dwHookData = dwHookData;
1184         dc->hookThunk = hookProc;
1185     }
1186     GDI_ReleaseObj( hdc );
1187     return TRUE;
1188 }
1189
1190
1191 /* relay function to call the 16-bit DC hook proc */
1192 static BOOL16 WINAPI call_dc_hook16( HDC16 hdc16, WORD code, DWORD data, LPARAM lParam )
1193 {
1194     WORD args[6];
1195     DWORD ret;
1196     FARPROC16 proc = NULL;
1197     HDC hdc = HDC_32( hdc16 );
1198     DC *dc = DC_GetDCPtr( hdc );
1199
1200     if (!dc) return FALSE;
1201     proc = dc->hookProc;
1202     GDI_ReleaseObj( hdc );
1203     if (!proc) return FALSE;
1204     args[5] = hdc16;
1205     args[4] = code;
1206     args[3] = HIWORD(data);
1207     args[2] = LOWORD(data);
1208     args[1] = HIWORD(lParam);
1209     args[0] = LOWORD(lParam);
1210     WOWCallback16Ex( (DWORD)proc, WCB16_PASCAL, sizeof(args), args, &ret );
1211     return LOWORD(ret);
1212 }
1213
1214 /***********************************************************************
1215  *           SetDCHook   (GDI.190)
1216  */
1217 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1218 {
1219     HDC hdc = HDC_32( hdc16 );
1220     DC *dc = DC_GetDCPtr( hdc );
1221     if (!dc) return FALSE;
1222
1223     dc->hookProc = hookProc;
1224     GDI_ReleaseObj( hdc );
1225     return SetDCHook( hdc, call_dc_hook16, dwHookData );
1226 }
1227
1228
1229 /***********************************************************************
1230  *           GetDCHook   (GDI.191)
1231  */
1232 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1233 {
1234     HDC hdc = HDC_32( hdc16 );
1235     DC *dc = DC_GetDCPtr( hdc );
1236     DWORD ret;
1237
1238     if (!dc) return 0;
1239     *phookProc = dc->hookProc;
1240     ret = dc->dwHookData;
1241     GDI_ReleaseObj( hdc );
1242     return ret;
1243 }
1244
1245
1246 /***********************************************************************
1247  *           SetHookFlags   (GDI.192)
1248  */
1249 WORD WINAPI SetHookFlags16(HDC16 hdc16, WORD flags)
1250 {
1251     HDC hdc = HDC_32( hdc16 );
1252     DC *dc = DC_GetDCPtr( hdc );
1253
1254     if( dc )
1255     {
1256         WORD wRet = dc->flags & DC_DIRTY;
1257
1258         /* "Undocumented Windows" info is slightly confusing.
1259          */
1260
1261         TRACE("hDC %p, flags %04x\n",hdc,flags);
1262
1263         if( flags & DCHF_INVALIDATEVISRGN )
1264             dc->flags |= DC_DIRTY;
1265         else if( flags & DCHF_VALIDATEVISRGN || !flags )
1266             dc->flags &= ~DC_DIRTY;
1267         GDI_ReleaseObj( hdc );
1268         return wRet;
1269     }
1270     return 0;
1271 }
1272
1273 /***********************************************************************
1274  *           SetICMMode    (GDI32.@)
1275  */
1276 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1277 {
1278 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1279     if (iEnableICM == ICM_OFF) return ICM_OFF;
1280     if (iEnableICM == ICM_ON) return 0;
1281     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1282     return 0;
1283 }
1284
1285 /***********************************************************************
1286  *           GetDeviceGammaRamp    (GDI32.@)
1287  */
1288 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1289 {
1290     BOOL ret = FALSE;
1291     DC *dc = DC_GetDCPtr( hDC );
1292
1293     if( dc )
1294     {
1295         if (dc->funcs->pGetDeviceGammaRamp)
1296             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1297         GDI_ReleaseObj( hDC );
1298     }
1299     return ret;
1300 }
1301
1302 /***********************************************************************
1303  *           SetDeviceGammaRamp    (GDI32.@)
1304  */
1305 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1306 {
1307     BOOL ret = FALSE;
1308     DC *dc = DC_GetDCPtr( hDC );
1309
1310     if( dc )
1311     {
1312         if (dc->funcs->pSetDeviceGammaRamp)
1313             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1314         GDI_ReleaseObj( hDC );
1315     }
1316     return ret;
1317 }
1318
1319 /***********************************************************************
1320  *           GetColorSpace    (GDI32.@)
1321  */
1322 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1323 {
1324 /*FIXME    Need to to whatever GetColorSpace actually does */
1325     return 0;
1326 }
1327
1328 /***********************************************************************
1329  *           CreateColorSpaceA    (GDI32.@)
1330  */
1331 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1332 {
1333   FIXME( "stub\n" );
1334   return 0;
1335 }
1336
1337 /***********************************************************************
1338  *           CreateColorSpaceW    (GDI32.@)
1339  */
1340 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1341 {
1342   FIXME( "stub\n" );
1343   return 0;
1344 }
1345
1346 /***********************************************************************
1347  *           DeleteColorSpace     (GDI32.@)
1348  */
1349 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1350 {
1351   FIXME( "stub\n" );
1352
1353   return TRUE;
1354 }
1355
1356 /***********************************************************************
1357  *           SetColorSpace     (GDI32.@)
1358  */
1359 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1360 {
1361   FIXME( "stub\n" );
1362
1363   return hColorSpace;
1364 }
1365
1366 /***********************************************************************
1367  *           GetBoundsRect    (GDI.194)
1368  */
1369 UINT16 WINAPI GetBoundsRect16(HDC16 hdc, LPRECT16 rect, UINT16 flags)
1370 {
1371     return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1372 }
1373
1374 /***********************************************************************
1375  *           GetBoundsRect    (GDI32.@)
1376  */
1377 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1378 {
1379     FIXME("(): stub\n");
1380     return DCB_RESET;   /* bounding rectangle always empty */
1381 }
1382
1383 /***********************************************************************
1384  *           SetBoundsRect    (GDI.193)
1385  */
1386 UINT16 WINAPI SetBoundsRect16(HDC16 hdc, const RECT16* rect, UINT16 flags)
1387 {
1388     if ( (flags & DCB_ACCUMULATE) || (flags & DCB_ENABLE) )
1389         FIXME("(%04x, %p, %04x): stub\n", hdc, rect, flags );
1390
1391     return DCB_RESET | DCB_DISABLE; /* bounding rectangle always empty and disabled*/
1392 }
1393
1394 /***********************************************************************
1395  *           SetBoundsRect    (GDI32.@)
1396  */
1397 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1398 {
1399     FIXME("(): stub\n");
1400     return DCB_DISABLE;   /* bounding rectangle always empty */
1401 }
1402
1403
1404 /***********************************************************************
1405  *              GetRelAbs               (GDI32.@)
1406  */
1407 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1408 {
1409     INT ret = 0;
1410     DC *dc = DC_GetDCPtr( hdc );
1411     if (dc) ret = dc->relAbsMode;
1412     GDI_ReleaseObj( hdc );
1413     return ret;
1414 }
1415
1416 /***********************************************************************
1417  *           GetLayout    (GDI32.@)
1418  *
1419  * Gets left->right or right->left text layout flags of a dc.
1420  * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1421  *
1422  */
1423 DWORD WINAPI GetLayout(HDC hdc)
1424 {
1425     FIXME("(%p): stub\n", hdc);
1426     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1427     return 0;
1428 }
1429
1430 /***********************************************************************
1431  *           SetLayout    (GDI32.@)
1432  *
1433  * Sets left->right or right->left text layout flags of a dc.
1434  * win98 just returns 0 and sets ERROR_CALL_NOT_IMPLEMENTED so we do the same
1435  *
1436  */
1437 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1438 {
1439     FIXME("(%p,%08lx): stub\n", hdc, layout);
1440     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1441     return 0;
1442 }
1443
1444 /***********************************************************************
1445  *           SetDCBrushColor    (GDI32.@)
1446  *
1447  * Sets the current device context (DC) brush color to the specified
1448  * color value. If the device cannot represent the specified color
1449  * value, the color is set to the nearest physical color.
1450  *
1451  */
1452 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1453 {
1454     FIXME("(%p, %08lx): stub\n", hdc, crColor);
1455     SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
1456     return CLR_INVALID;
1457 }
1458
1459 /***********************************************************************
1460  *           SetVirtualResolution   (GDI32.@)
1461  *
1462  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
1463  */
1464 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
1465 {
1466     FIXME("(%p %08lx %08lx %08lx %08lx): stub!\n", hdc, dw2, dw3, dw4, dw5);
1467     return FALSE;
1468 }