dlls/gdi32/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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "winerror.h"
  33 #include "wownt32.h"
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  39
  40 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  41
  42 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj );
  43
  44 static const struct gdi_obj_funcs dc_funcs =
  45 {
  46     NULL,             /* pSelectObject */
  47     NULL,             /* pGetObject16 */
  48     NULL,             /* pGetObjectA */
  49     NULL,             /* pGetObjectW */
  50     NULL,             /* pUnrealizeObject */
  51     DC_DeleteObject   /* pDeleteObject */
  52 };
  53
  54
  55 static inline DC *get_dc_obj( HDC hdc )
  56 {
  57     DC *dc = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
  58     if (!dc) return NULL;
  59
  60     if ((GDIMAGIC(dc->header.wMagic) != DC_MAGIC) &&
  61         (GDIMAGIC(dc->header.wMagic) != MEMORY_DC_MAGIC) &&
  62         (GDIMAGIC(dc->header.wMagic) != METAFILE_DC_MAGIC) &&
  63         (GDIMAGIC(dc->header.wMagic) != ENHMETAFILE_DC_MAGIC))
  64     {
  65         GDI_ReleaseObj( hdc );
  66         SetLastError( ERROR_INVALID_HANDLE );
  67         dc = NULL;
  68     }
  69     return dc;
  70 }
  71
  72
  73 /***********************************************************************
  74  *           alloc_dc_ptr
  75  */
  76 DC *alloc_dc_ptr( const DC_FUNCTIONS *funcs, WORD magic )
  77 {
  78     HDC hdc;
  79     DC *dc;
  80
  81     if (!(dc = GDI_AllocObject( sizeof(*dc), magic, (HGDIOBJ*)&hdc, &dc_funcs ))) return NULL;
  82
  83     dc->hSelf               = hdc;
  84     dc->funcs               = funcs;
  85     dc->physDev             = NULL;
  86     dc->thread              = GetCurrentThreadId();
  87     dc->refcount            = 1;
  88     dc->dirty               = 0;
  89     dc->saveLevel           = 0;
  90     dc->saved_dc            = 0;
  91     dc->dwHookData          = 0;
  92     dc->hookProc            = NULL;
  93     dc->hookThunk           = NULL;
  94     dc->wndOrgX             = 0;
  95     dc->wndOrgY             = 0;
  96     dc->wndExtX             = 1;
  97     dc->wndExtY             = 1;
  98     dc->vportOrgX           = 0;
  99     dc->vportOrgY           = 0;
 100     dc->vportExtX           = 1;
 101     dc->vportExtY           = 1;
 102     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
 103     dc->flags               = 0;
 104     dc->layout              = 0;
 105     dc->hClipRgn            = 0;
 106     dc->hMetaRgn            = 0;
 107     dc->hMetaClipRgn        = 0;
 108     dc->hVisRgn             = 0;
 109     dc->hPen                = GetStockObject( BLACK_PEN );
 110     dc->hBrush              = GetStockObject( WHITE_BRUSH );
 111     dc->hFont               = GetStockObject( SYSTEM_FONT );
 112     dc->hBitmap             = 0;
 113     dc->hDevice             = 0;
 114     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 115     dc->gdiFont             = 0;
 116     dc->ROPmode             = R2_COPYPEN;
 117     dc->polyFillMode        = ALTERNATE;
 118     dc->stretchBltMode      = BLACKONWHITE;
 119     dc->relAbsMode          = ABSOLUTE;
 120     dc->backgroundMode      = OPAQUE;
 121     dc->backgroundColor     = RGB( 255, 255, 255 );
 122     dc->dcBrushColor        = RGB( 255, 255, 255 );
 123     dc->dcPenColor          = RGB( 0, 0, 0 );
 124     dc->textColor           = RGB( 0, 0, 0 );
 125     dc->brushOrgX           = 0;
 126     dc->brushOrgY           = 0;
 127     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 128     dc->charExtra           = 0;
 129     dc->breakExtra          = 0;
 130     dc->breakRem            = 0;
 131     dc->MapMode             = MM_TEXT;
 132     dc->GraphicsMode        = GM_COMPATIBLE;
 133     dc->pAbortProc          = NULL;
 134     dc->CursPosX            = 0;
 135     dc->CursPosY            = 0;
 136     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 137     dc->xformWorld2Wnd.eM11 = 1.0f;
 138     dc->xformWorld2Wnd.eM12 = 0.0f;
 139     dc->xformWorld2Wnd.eM21 = 0.0f;
 140     dc->xformWorld2Wnd.eM22 = 1.0f;
 141     dc->xformWorld2Wnd.eDx  = 0.0f;
 142     dc->xformWorld2Wnd.eDy  = 0.0f;
 143     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 144     dc->xformVport2World    = dc->xformWorld2Wnd;
 145     dc->vport2WorldValid    = TRUE;
 146     dc->BoundsRect.left     = 0;
 147     dc->BoundsRect.top      = 0;
 148     dc->BoundsRect.right    = 0;
 149     dc->BoundsRect.bottom   = 0;
 150     dc->saved_visrgn        = NULL;
 151     PATH_InitGdiPath(&dc->path);
 152     GDI_ReleaseObj( dc->hSelf );
 153     return dc;
 154 }
 155
 156
 157
 158 /***********************************************************************
 159  *           DC_GetDCPtr
 160  */
 161 DC *DC_GetDCPtr( HDC hdc )
 162 {
 163     DC *dc = get_dc_obj( hdc );
 164     if (!dc) return NULL;
 165
 166     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 167     {
 168         dc->thread = GetCurrentThreadId();
 169     }
 170     else if (dc->thread != GetCurrentThreadId())
 171     {
 172         GDI_ReleaseObj( hdc );
 173         SetLastError( ERROR_ACCESS_DENIED );
 174         return NULL;
 175     }
 176     else InterlockedIncrement( &dc->refcount );
 177
 178     return dc;
 179 }
 180
 181
 182 /***********************************************************************
 183  *           DC_ReleaseDCPtr
 184  */
 185 void DC_ReleaseDCPtr( DC *dc )
 186 {
 187     release_dc_ptr( dc );
 188     GDI_ReleaseObj( dc->hSelf );
 189 }
 190
 191
 192 /***********************************************************************
 193  *           free_dc_ptr
 194  */
 195 BOOL free_dc_ptr( DC *dc )
 196 {
 197     assert( dc->refcount == 1 );
 198     /* grab the gdi lock again */
 199     if (!GDI_GetObjPtr( dc->hSelf, MAGIC_DONTCARE )) return FALSE;  /* shouldn't happen */
 200     return GDI_FreeObject( dc->hSelf, dc );
 201 }
 202
 203
 204 /***********************************************************************
 205  *           get_dc_ptr
 206  *
 207  * Retrieve a DC pointer but release the GDI lock.
 208  */
 209 DC *get_dc_ptr( HDC hdc )
 210 {
 211     DC *dc = get_dc_obj( hdc );
 212     if (!dc) return NULL;
 213
 214     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 215     {
 216         dc->thread = GetCurrentThreadId();
 217     }
 218     else if (dc->thread != GetCurrentThreadId())
 219     {
 220         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 221         GDI_ReleaseObj( hdc );
 222         return NULL;
 223     }
 224     else InterlockedIncrement( &dc->refcount );
 225
 226     GDI_ReleaseObj( hdc );
 227     return dc;
 228 }
 229
 230
 231 /***********************************************************************
 232  *           release_dc_ptr
 233  */
 234 void release_dc_ptr( DC *dc )
 235 {
 236     LONG ref;
 237
 238     dc->thread = 0;
 239     ref = InterlockedDecrement( &dc->refcount );
 240     assert( ref >= 0 );
 241     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 242 }
 243
 244
 245 /***********************************************************************
 246  *           update_dc
 247  *
 248  * Make sure the DC vis region is up to date.
 249  * This function may call up to USER so the GDI lock should _not_
 250  * be held when calling it.
 251  */
 252 void update_dc( DC *dc )
 253 {
 254     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookThunk)
 255         dc->hookThunk( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 256 }
 257
 258
 259 /***********************************************************************
 260  *           DC_DeleteObject
 261  */
 262 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj )
 263 {
 264     GDI_ReleaseObj( handle );
 265     return DeleteDC( handle );
 266 }
 267
 268
 269 /***********************************************************************
 270  *           DC_InitDC
 271  *
 272  * Setup device-specific DC values for a newly created DC.
 273  */
 274 void DC_InitDC( DC* dc )
 275 {
 276     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 277     SetTextColor( dc->hSelf, dc->textColor );
 278     SetBkColor( dc->hSelf, dc->backgroundColor );
 279     SelectObject( dc->hSelf, dc->hPen );
 280     SelectObject( dc->hSelf, dc->hBrush );
 281     SelectObject( dc->hSelf, dc->hFont );
 282     CLIPPING_UpdateGCRegion( dc );
 283 }
 284
 285
 286 /***********************************************************************
 287  *           DC_InvertXform
 288  *
 289  * Computes the inverse of the transformation xformSrc and stores it to
 290  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 291  * is singular.
 292  */
 293 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 294 {
 295     FLOAT determinant;
 296
 297     determinant = xformSrc->eM11*xformSrc->eM22 -
 298         xformSrc->eM12*xformSrc->eM21;
 299     if (determinant > -1e-12 && determinant < 1e-12)
 300         return FALSE;
 301
 302     xformDest->eM11 =  xformSrc->eM22 / determinant;
 303     xformDest->eM12 = -xformSrc->eM12 / determinant;
 304     xformDest->eM21 = -xformSrc->eM21 / determinant;
 305     xformDest->eM22 =  xformSrc->eM11 / determinant;
 306     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 307                        xformSrc->eDy * xformDest->eM21;
 308     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 309                        xformSrc->eDy * xformDest->eM22;
 310
 311     return TRUE;
 312 }
 313
 314
 315 /***********************************************************************
 316  *           DC_UpdateXforms
 317  *
 318  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 319  * fields of the specified DC by creating a transformation that
 320  * represents the current mapping mode and combining it with the DC's
 321  * world transform. This function should be called whenever the
 322  * parameters associated with the mapping mode (window and viewport
 323  * extents and origins) or the world transform change.
 324  */
 325 void DC_UpdateXforms( DC *dc )
 326 {
 327     XFORM xformWnd2Vport, oldworld2vport;
 328     FLOAT scaleX, scaleY;
 329
 330     /* Construct a transformation to do the window-to-viewport conversion */
 331     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 332     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 333     xformWnd2Vport.eM11 = scaleX;
 334     xformWnd2Vport.eM12 = 0.0;
 335     xformWnd2Vport.eM21 = 0.0;
 336     xformWnd2Vport.eM22 = scaleY;
 337     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 338         scaleX * (FLOAT)dc->wndOrgX;
 339     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 340         scaleY * (FLOAT)dc->wndOrgY;
 341
 342     oldworld2vport = dc->xformWorld2Vport;
 343     /* Combine with the world transformation */
 344     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 345         &xformWnd2Vport );
 346
 347     /* Create inverse of world-to-viewport transformation */
 348     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 349         &dc->xformVport2World );
 350
 351     /* Reselect the font and pen back into the dc so that the size
 352        gets updated. */
 353     if(memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)))
 354     {
 355         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 356         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 357     }
 358 }
 359
 360
 361 /***********************************************************************
 362  *           GetDCState   (Not a Windows API)
 363  */
 364 HDC WINAPI GetDCState( HDC hdc )
 365 {
 366     DC * newdc, * dc;
 367     HGDIOBJ handle;
 368
 369     if (!(dc = get_dc_ptr( hdc ))) return 0;
 370     if (!(newdc = GDI_AllocObject( sizeof(DC), GDIMAGIC(dc->header.wMagic), &handle, &dc_funcs )))
 371     {
 372       release_dc_ptr( dc );
 373       return 0;
 374     }
 375     TRACE("(%p): returning %p\n", hdc, handle );
 376
 377     newdc->flags            = dc->flags | DC_SAVED;
 378     newdc->layout           = dc->layout;
 379     newdc->hPen             = dc->hPen;
 380     newdc->hBrush           = dc->hBrush;
 381     newdc->hFont            = dc->hFont;
 382     newdc->hBitmap          = dc->hBitmap;
 383     newdc->hDevice          = dc->hDevice;
 384     newdc->hPalette         = dc->hPalette;
 385     newdc->ROPmode          = dc->ROPmode;
 386     newdc->polyFillMode     = dc->polyFillMode;
 387     newdc->stretchBltMode   = dc->stretchBltMode;
 388     newdc->relAbsMode       = dc->relAbsMode;
 389     newdc->backgroundMode   = dc->backgroundMode;
 390     newdc->backgroundColor  = dc->backgroundColor;
 391     newdc->textColor        = dc->textColor;
 392     newdc->dcBrushColor     = dc->dcBrushColor;
 393     newdc->dcPenColor       = dc->dcPenColor;
 394     newdc->brushOrgX        = dc->brushOrgX;
 395     newdc->brushOrgY        = dc->brushOrgY;
 396     newdc->textAlign        = dc->textAlign;
 397     newdc->charExtra        = dc->charExtra;
 398     newdc->breakExtra       = dc->breakExtra;
 399     newdc->breakRem         = dc->breakRem;
 400     newdc->MapMode          = dc->MapMode;
 401     newdc->GraphicsMode     = dc->GraphicsMode;
 402     newdc->CursPosX         = dc->CursPosX;
 403     newdc->CursPosY         = dc->CursPosY;
 404     newdc->ArcDirection     = dc->ArcDirection;
 405     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 406     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 407     newdc->xformVport2World = dc->xformVport2World;
 408     newdc->vport2WorldValid = dc->vport2WorldValid;
 409     newdc->wndOrgX          = dc->wndOrgX;
 410     newdc->wndOrgY          = dc->wndOrgY;
 411     newdc->wndExtX          = dc->wndExtX;
 412     newdc->wndExtY          = dc->wndExtY;
 413     newdc->vportOrgX        = dc->vportOrgX;
 414     newdc->vportOrgY        = dc->vportOrgY;
 415     newdc->vportExtX        = dc->vportExtX;
 416     newdc->vportExtY        = dc->vportExtY;
 417     newdc->BoundsRect       = dc->BoundsRect;
 418
 419     newdc->hSelf = (HDC)handle;
 420     newdc->thread    = GetCurrentThreadId();
 421     newdc->refcount  = 1;
 422     newdc->saveLevel = 0;
 423     newdc->saved_dc  = 0;
 424     GDI_ReleaseObj( handle );
 425
 426     PATH_InitGdiPath( &newdc->path );
 427
 428     newdc->pAbortProc = NULL;
 429     newdc->hookThunk  = NULL;
 430     newdc->hookProc   = 0;
 431     newdc->saved_visrgn = NULL;
 432
 433     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 434
 435     newdc->hVisRgn      = 0;
 436     newdc->hClipRgn     = 0;
 437     newdc->hMetaRgn     = 0;
 438     newdc->hMetaClipRgn = 0;
 439     if (dc->hClipRgn)
 440     {
 441         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 442         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 443     }
 444     if (dc->hMetaRgn)
 445     {
 446         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 447         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 448     }
 449     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 450
 451     if(dc->gdiFont) {
 452         newdc->gdiFont = dc->gdiFont;
 453     } else
 454         newdc->gdiFont = 0;
 455
 456     release_dc_ptr( newdc );
 457     release_dc_ptr( dc );
 458     return handle;
 459 }
 460
 461
 462 /***********************************************************************
 463  *           SetDCState   (Not a Windows API)
 464  */
 465 void WINAPI SetDCState( HDC hdc, HDC hdcs )
 466 {
 467     DC *dc, *dcs;
 468
 469     if (!(dc = get_dc_ptr( hdc ))) return;
 470     if (!(dcs = get_dc_ptr( hdcs )))
 471     {
 472         release_dc_ptr( dc );
 473         return;
 474     }
 475     if (!(dcs->flags & DC_SAVED))
 476     {
 477         release_dc_ptr( dc );
 478         release_dc_ptr( dcs );
 479         return;
 480     }
 481     TRACE("%p %p\n", hdc, hdcs );
 482
 483     update_dc( dc );
 484     dc->flags            = dcs->flags & ~DC_SAVED;
 485     dc->layout           = dcs->layout;
 486     dc->hDevice          = dcs->hDevice;
 487     dc->ROPmode          = dcs->ROPmode;
 488     dc->polyFillMode     = dcs->polyFillMode;
 489     dc->stretchBltMode   = dcs->stretchBltMode;
 490     dc->relAbsMode       = dcs->relAbsMode;
 491     dc->backgroundMode   = dcs->backgroundMode;
 492     dc->backgroundColor  = dcs->backgroundColor;
 493     dc->textColor        = dcs->textColor;
 494     dc->dcBrushColor     = dcs->dcBrushColor;
 495     dc->dcPenColor       = dcs->dcPenColor;
 496     dc->brushOrgX        = dcs->brushOrgX;
 497     dc->brushOrgY        = dcs->brushOrgY;
 498     dc->textAlign        = dcs->textAlign;
 499     dc->charExtra        = dcs->charExtra;
 500     dc->breakExtra       = dcs->breakExtra;
 501     dc->breakRem         = dcs->breakRem;
 502     dc->MapMode          = dcs->MapMode;
 503     dc->GraphicsMode     = dcs->GraphicsMode;
 504     dc->CursPosX         = dcs->CursPosX;
 505     dc->CursPosY         = dcs->CursPosY;
 506     dc->ArcDirection     = dcs->ArcDirection;
 507     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 508     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 509     dc->xformVport2World = dcs->xformVport2World;
 510     dc->vport2WorldValid = dcs->vport2WorldValid;
 511     dc->BoundsRect       = dcs->BoundsRect;
 512
 513     dc->wndOrgX          = dcs->wndOrgX;
 514     dc->wndOrgY          = dcs->wndOrgY;
 515     dc->wndExtX          = dcs->wndExtX;
 516     dc->wndExtY          = dcs->wndExtY;
 517     dc->vportOrgX        = dcs->vportOrgX;
 518     dc->vportOrgY        = dcs->vportOrgY;
 519     dc->vportExtX        = dcs->vportExtX;
 520     dc->vportExtY        = dcs->vportExtY;
 521
 522     if (dcs->hClipRgn)
 523     {
 524         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 525         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 526     }
 527     else
 528     {
 529         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 530         dc->hClipRgn = 0;
 531     }
 532     if (dcs->hMetaRgn)
 533     {
 534         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 535         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 536     }
 537     else
 538     {
 539         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 540         dc->hMetaRgn = 0;
 541     }
 542     CLIPPING_UpdateGCRegion( dc );
 543
 544     SelectObject( hdc, dcs->hBitmap );
 545     SelectObject( hdc, dcs->hBrush );
 546     SelectObject( hdc, dcs->hFont );
 547     SelectObject( hdc, dcs->hPen );
 548     SetBkColor( hdc, dcs->backgroundColor);
 549     SetTextColor( hdc, dcs->textColor);
 550     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 551     release_dc_ptr( dc );
 552     release_dc_ptr( dcs );
 553 }
 554
 555
 556 /***********************************************************************
 557  *           GetDCState   (GDI.179)
 558  */
 559 HDC16 WINAPI GetDCState16( HDC16 hdc )
 560 {
 561     return HDC_16( GetDCState( HDC_32(hdc) ));
 562 }
 563
 564
 565 /***********************************************************************
 566  *           SetDCState   (GDI.180)
 567  */
 568 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 569 {
 570     SetDCState( HDC_32(hdc), HDC_32(hdcs) );
 571 }
 572
 573
 574 /***********************************************************************
 575  *           SaveDC    (GDI32.@)
 576  */
 577 INT WINAPI SaveDC( HDC hdc )
 578 {
 579     HDC hdcs;
 580     DC * dc, * dcs;
 581     INT ret;
 582
 583     dc = get_dc_ptr( hdc );
 584     if (!dc) return 0;
 585
 586     if(dc->funcs->pSaveDC)
 587     {
 588         ret = dc->funcs->pSaveDC( dc->physDev );
 589         if(ret)
 590             ret = ++dc->saveLevel;
 591         release_dc_ptr( dc );
 592         return ret;
 593     }
 594
 595     if (!(hdcs = GetDCState( hdc )))
 596     {
 597         release_dc_ptr( dc );
 598         return 0;
 599     }
 600     dcs = get_dc_ptr( hdcs );
 601
 602     /* Copy path. The reason why path saving / restoring is in SaveDC/
 603      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 604      * functions are only in Win16 (which doesn't have paths) and that
 605      * SetDCState doesn't allow us to signal an error (which can happen
 606      * when copying paths).
 607      */
 608     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 609     {
 610         release_dc_ptr( dc );
 611         release_dc_ptr( dcs );
 612         DeleteDC( hdcs );
 613         return 0;
 614     }
 615
 616     dcs->saved_dc = dc->saved_dc;
 617     dc->saved_dc = hdcs;
 618     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 619     ret = ++dc->saveLevel;
 620     release_dc_ptr( dcs );
 621     release_dc_ptr( dc );
 622     return ret;
 623 }
 624
 625
 626 /***********************************************************************
 627  *           RestoreDC    (GDI32.@)
 628  */
 629 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 630 {
 631     DC * dc, * dcs;
 632     BOOL success;
 633
 634     TRACE("%p %d\n", hdc, level );
 635     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 636
 637     if(abs(level) > dc->saveLevel || level == 0)
 638     {
 639         release_dc_ptr( dc );
 640         return FALSE;
 641     }
 642
 643     update_dc( dc );
 644
 645     if(dc->funcs->pRestoreDC)
 646     {
 647         success = dc->funcs->pRestoreDC( dc->physDev, level );
 648         if(level < 0) level = dc->saveLevel + level + 1;
 649         if(success)
 650             dc->saveLevel = level - 1;
 651         release_dc_ptr( dc );
 652         return success;
 653     }
 654
 655     if (level < 0) level = dc->saveLevel + level + 1;
 656     success=TRUE;
 657     while (dc->saveLevel >= level)
 658     {
 659         HDC hdcs = dc->saved_dc;
 660         if (!(dcs = get_dc_ptr( hdcs )))
 661         {
 662             success = FALSE;
 663             break;
 664         }
 665         dc->saved_dc = dcs->saved_dc;
 666         dcs->saved_dc = 0;
 667         if (--dc->saveLevel < level)
 668         {
 669             SetDCState( hdc, hdcs );
 670             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 671                 /* FIXME: This might not be quite right, since we're
 672                  * returning FALSE but still destroying the saved DC state */
 673                 success=FALSE;
 674         }
 675         release_dc_ptr( dcs );
 676         DeleteDC( hdcs );
 677     }
 678     release_dc_ptr( dc );
 679     return success;
 680 }
 681
 682
 683 /***********************************************************************
 684  *           CreateDCW    (GDI32.@)
 685  */
 686 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 687                       const DEVMODEW *initData )
 688 {
 689     HDC hdc;
 690     DC * dc;
 691     const DC_FUNCTIONS *funcs;
 692     WCHAR buf[300];
 693
 694     GDI_CheckNotLock();
 695
 696     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 697     {
 698         if (!driver)
 699         {
 700             ERR( "no device found for %s\n", debugstr_w(device) );
 701             return 0;
 702         }
 703         strcpyW(buf, driver);
 704     }
 705
 706     if (!(funcs = DRIVER_load_driver( buf )))
 707     {
 708         ERR( "no driver found for %s\n", debugstr_w(buf) );
 709         return 0;
 710     }
 711     if (!(dc = alloc_dc_ptr( funcs, DC_MAGIC ))) goto error;
 712     hdc = dc->hSelf;
 713
 714     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 715     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 716
 717     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 718           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 719
 720     if (dc->funcs->pCreateDC &&
 721         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 722     {
 723         WARN("creation aborted by device\n" );
 724         goto error;
 725     }
 726
 727     SetRectRgn( dc->hVisRgn, 0, 0,
 728                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 729
 730     DC_InitDC( dc );
 731     release_dc_ptr( dc );
 732     return hdc;
 733
 734 error:
 735     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 736     if (dc) free_dc_ptr( dc );
 737     DRIVER_release_driver( funcs );
 738     return 0;
 739 }
 740
 741
 742 /***********************************************************************
 743  *           CreateDCA    (GDI32.@)
 744  */
 745 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 746                       const DEVMODEA *initData )
 747 {
 748     UNICODE_STRING driverW, deviceW, outputW;
 749     DEVMODEW *initDataW;
 750     HDC ret;
 751
 752     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 753     else driverW.Buffer = NULL;
 754
 755     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 756     else deviceW.Buffer = NULL;
 757
 758     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 759     else outputW.Buffer = NULL;
 760
 761     initDataW = NULL;
 762     if (initData)
 763     {
 764         /* don't convert initData for DISPLAY driver, it's not used */
 765         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 766             initDataW = GdiConvertToDevmodeW(initData);
 767     }
 768
 769     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 770
 771     RtlFreeUnicodeString(&driverW);
 772     RtlFreeUnicodeString(&deviceW);
 773     RtlFreeUnicodeString(&outputW);
 774     HeapFree(GetProcessHeap(), 0, initDataW);
 775     return ret;
 776 }
 777
 778
 779 /***********************************************************************
 780  *           CreateICA    (GDI32.@)
 781  */
 782 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 783                           const DEVMODEA* initData )
 784 {
 785       /* Nothing special yet for ICs */
 786     return CreateDCA( driver, device, output, initData );
 787 }
 788
 789
 790 /***********************************************************************
 791  *           CreateICW    (GDI32.@)
 792  */
 793 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 794                           const DEVMODEW* initData )
 795 {
 796       /* Nothing special yet for ICs */
 797     return CreateDCW( driver, device, output, initData );
 798 }
 799
 800
 801 /***********************************************************************
 802  *           CreateCompatibleDC   (GDI32.@)
 803  */
 804 HDC WINAPI CreateCompatibleDC( HDC hdc )
 805 {
 806     DC *dc, *origDC;
 807     HDC ret;
 808     const DC_FUNCTIONS *funcs = NULL;
 809     PHYSDEV physDev = NULL;
 810
 811     GDI_CheckNotLock();
 812
 813     if ((origDC = get_dc_ptr( hdc )))
 814     {
 815         if (GetObjectType( hdc ) == OBJ_DC)
 816         {
 817             funcs = origDC->funcs;
 818             physDev = origDC->physDev;
 819         }
 820         release_dc_ptr( origDC );
 821         if (funcs) funcs = DRIVER_get_driver( funcs );
 822     }
 823
 824     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 825
 826     if (!(dc = alloc_dc_ptr( funcs, MEMORY_DC_MAGIC ))) goto error;
 827
 828     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 829
 830     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 831     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 832
 833     /* Copy the driver-specific physical device info into
 834      * the new DC. The driver may use this read-only info
 835      * while creating the compatible DC below. */
 836     dc->physDev = physDev;
 837     ret = dc->hSelf;
 838
 839     if (dc->funcs->pCreateDC &&
 840         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 841     {
 842         WARN("creation aborted by device\n");
 843         goto error;
 844     }
 845
 846     DC_InitDC( dc );
 847     release_dc_ptr( dc );
 848     return ret;
 849
 850 error:
 851     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 852     if (dc) free_dc_ptr( dc );
 853     DRIVER_release_driver( funcs );
 854     return 0;
 855 }
 856
 857
 858 /***********************************************************************
 859  *           DeleteDC    (GDI32.@)
 860  */
 861 BOOL WINAPI DeleteDC( HDC hdc )
 862 {
 863     const DC_FUNCTIONS *funcs = NULL;
 864     DC * dc;
 865
 866     TRACE("%p\n", hdc );
 867
 868     GDI_CheckNotLock();
 869
 870     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 871     if (dc->refcount != 1)
 872     {
 873         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 874         release_dc_ptr( dc );
 875         return FALSE;
 876     }
 877
 878     /* Call hook procedure to check whether is it OK to delete this DC */
 879     if (dc->hookThunk && !dc->hookThunk( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 880     {
 881         release_dc_ptr( dc );
 882         return FALSE;
 883     }
 884
 885     while (dc->saveLevel)
 886     {
 887         DC * dcs;
 888         HDC hdcs = dc->saved_dc;
 889         if (!(dcs = get_dc_ptr( hdcs ))) break;
 890         dc->saved_dc = dcs->saved_dc;
 891         dc->saveLevel--;
 892         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 893         if (dcs->hMetaRgn) DeleteObject( dcs->hMetaRgn );
 894         if (dcs->hMetaClipRgn) DeleteObject( dcs->hMetaClipRgn );
 895         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 896         PATH_DestroyGdiPath(&dcs->path);
 897         free_dc_ptr( dcs );
 898     }
 899
 900     if (!(dc->flags & DC_SAVED))
 901     {
 902         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 903         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 904         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 905         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 906         funcs = dc->funcs;
 907         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 908         dc->physDev = NULL;
 909     }
 910
 911     while (dc->saved_visrgn)
 912     {
 913         struct saved_visrgn *next = dc->saved_visrgn->next;
 914         DeleteObject( dc->saved_visrgn->hrgn );
 915         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 916         dc->saved_visrgn = next;
 917     }
 918     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 919     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 920     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 921     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 922     PATH_DestroyGdiPath(&dc->path);
 923
 924     free_dc_ptr( dc );
 925     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 926     return TRUE;
 927 }
 928
 929
 930 /***********************************************************************
 931  *           ResetDCW    (GDI32.@)
 932  */
 933 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 934 {
 935     DC *dc;
 936     HDC ret = hdc;
 937
 938     if ((dc = get_dc_ptr( hdc )))
 939     {
 940         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 941         release_dc_ptr( dc );
 942     }
 943     return ret;
 944 }
 945
 946
 947 /***********************************************************************
 948  *           ResetDCA    (GDI32.@)
 949  */
 950 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 951 {
 952     DEVMODEW *devmodeW;
 953     HDC ret;
 954
 955     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 956     else devmodeW = NULL;
 957
 958     ret = ResetDCW(hdc, devmodeW);
 959
 960     HeapFree(GetProcessHeap(), 0, devmodeW);
 961     return ret;
 962 }
 963
 964
 965 /***********************************************************************
 966  *           GetDeviceCaps    (GDI32.@)
 967  */
 968 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 969 {
 970     DC *dc;
 971     INT ret = 0;
 972
 973     if ((dc = get_dc_ptr( hdc )))
 974     {
 975         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 976         else switch(cap)  /* return meaningful values for some entries */
 977         {
 978         case HORZRES:     ret = 640; break;
 979         case VERTRES:     ret = 480; break;
 980         case BITSPIXEL:   ret = 1; break;
 981         case PLANES:      ret = 1; break;
 982         case NUMCOLORS:   ret = 2; break;
 983         case ASPECTX:     ret = 36; break;
 984         case ASPECTY:     ret = 36; break;
 985         case ASPECTXY:    ret = 51; break;
 986         case LOGPIXELSX:  ret = 72; break;
 987         case LOGPIXELSY:  ret = 72; break;
 988         case SIZEPALETTE: ret = 2; break;
 989         }
 990         release_dc_ptr( dc );
 991     }
 992     return ret;
 993 }
 994
 995
 996 /***********************************************************************
 997  *              GetBkColor (GDI32.@)
 998  */
 999 COLORREF WINAPI GetBkColor( HDC hdc )
1000 {
1001     COLORREF ret = 0;
1002     DC * dc = get_dc_ptr( hdc );
1003     if (dc)
1004     {
1005         ret = dc->backgroundColor;
1006         release_dc_ptr( dc );
1007     }
1008     return ret;
1009 }
1010
1011
1012 /***********************************************************************
1013  *           SetBkColor    (GDI32.@)
1014  */
1015 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
1016 {
1017     COLORREF oldColor;
1018     DC * dc = get_dc_ptr( hdc );
1019
1020     TRACE("hdc=%p color=0x%08x\n", hdc, color);
1021
1022     if (!dc) return CLR_INVALID;
1023     oldColor = dc->backgroundColor;
1024     if (dc->funcs->pSetBkColor)
1025     {
1026         color = dc->funcs->pSetBkColor(dc->physDev, color);
1027         if (color == CLR_INVALID)  /* don't change it */
1028         {
1029             color = oldColor;
1030             oldColor = CLR_INVALID;
1031         }
1032     }
1033     dc->backgroundColor = color;
1034     release_dc_ptr( dc );
1035     return oldColor;
1036 }
1037
1038
1039 /***********************************************************************
1040  *              GetTextColor (GDI32.@)
1041  */
1042 COLORREF WINAPI GetTextColor( HDC hdc )
1043 {
1044     COLORREF ret = 0;
1045     DC * dc = get_dc_ptr( hdc );
1046     if (dc)
1047     {
1048         ret = dc->textColor;
1049         release_dc_ptr( dc );
1050     }
1051     return ret;
1052 }
1053
1054
1055 /***********************************************************************
1056  *           SetTextColor    (GDI32.@)
1057  */
1058 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
1059 {
1060     COLORREF oldColor;
1061     DC * dc = get_dc_ptr( hdc );
1062
1063     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
1064
1065     if (!dc) return CLR_INVALID;
1066     oldColor = dc->textColor;
1067     if (dc->funcs->pSetTextColor)
1068     {
1069         color = dc->funcs->pSetTextColor(dc->physDev, color);
1070         if (color == CLR_INVALID)  /* don't change it */
1071         {
1072             color = oldColor;
1073             oldColor = CLR_INVALID;
1074         }
1075     }
1076     dc->textColor = color;
1077     release_dc_ptr( dc );
1078     return oldColor;
1079 }
1080
1081
1082 /***********************************************************************
1083  *              GetTextAlign (GDI32.@)
1084  */
1085 UINT WINAPI GetTextAlign( HDC hdc )
1086 {
1087     UINT ret = 0;
1088     DC * dc = get_dc_ptr( hdc );
1089     if (dc)
1090     {
1091         ret = dc->textAlign;
1092         release_dc_ptr( dc );
1093     }
1094     return ret;
1095 }
1096
1097
1098 /***********************************************************************
1099  *           SetTextAlign    (GDI32.@)
1100  */
1101 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1102 {
1103     UINT ret;
1104     DC *dc = get_dc_ptr( hdc );
1105
1106     TRACE("hdc=%p align=%d\n", hdc, align);
1107
1108     if (!dc) return 0x0;
1109     ret = dc->textAlign;
1110     if (dc->funcs->pSetTextAlign)
1111         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1112             ret = GDI_ERROR;
1113     if (ret != GDI_ERROR)
1114         dc->textAlign = align;
1115     release_dc_ptr( dc );
1116     return ret;
1117 }
1118
1119 /***********************************************************************
1120  *           GetDCOrgEx  (GDI32.@)
1121  */
1122 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1123 {
1124     DC * dc;
1125
1126     if (!lpp) return FALSE;
1127     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1128
1129     lpp->x = lpp->y = 0;
1130     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1131     release_dc_ptr( dc );
1132     return TRUE;
1133 }
1134
1135
1136 /***********************************************************************
1137  *           SetDCOrg   (GDI.117)
1138  */
1139 DWORD WINAPI SetDCOrg16( HDC16 hdc16, INT16 x, INT16 y )
1140 {
1141     DWORD prevOrg = 0;
1142     HDC hdc = HDC_32( hdc16 );
1143     DC *dc = get_dc_ptr( hdc );
1144     if (!dc) return 0;
1145     if (dc->funcs->pSetDCOrg) prevOrg = dc->funcs->pSetDCOrg( dc->physDev, x, y );
1146     release_dc_ptr( dc );
1147     return prevOrg;
1148 }
1149
1150
1151 /***********************************************************************
1152  *              GetGraphicsMode (GDI32.@)
1153  */
1154 INT WINAPI GetGraphicsMode( HDC hdc )
1155 {
1156     INT ret = 0;
1157     DC * dc = get_dc_ptr( hdc );
1158     if (dc)
1159     {
1160         ret = dc->GraphicsMode;
1161         release_dc_ptr( dc );
1162     }
1163     return ret;
1164 }
1165
1166
1167 /***********************************************************************
1168  *           SetGraphicsMode    (GDI32.@)
1169  */
1170 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1171 {
1172     INT ret = 0;
1173     DC *dc = get_dc_ptr( hdc );
1174
1175     /* One would think that setting the graphics mode to GM_COMPATIBLE
1176      * would also reset the world transformation matrix to the unity
1177      * matrix. However, in Windows, this is not the case. This doesn't
1178      * make a lot of sense to me, but that's the way it is.
1179      */
1180     if (!dc) return 0;
1181     if ((mode > 0) && (mode <= GM_LAST))
1182     {
1183         ret = dc->GraphicsMode;
1184         dc->GraphicsMode = mode;
1185     }
1186     release_dc_ptr( dc );
1187     return ret;
1188 }
1189
1190
1191 /***********************************************************************
1192  *              GetArcDirection (GDI32.@)
1193  */
1194 INT WINAPI GetArcDirection( HDC hdc )
1195 {
1196     INT ret = 0;
1197     DC * dc = get_dc_ptr( hdc );
1198     if (dc)
1199     {
1200         ret = dc->ArcDirection;
1201         release_dc_ptr( dc );
1202     }
1203     return ret;
1204 }
1205
1206
1207 /***********************************************************************
1208  *           SetArcDirection    (GDI32.@)
1209  */
1210 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1211 {
1212     DC * dc;
1213     INT nOldDirection = 0;
1214
1215     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1216     {
1217         SetLastError(ERROR_INVALID_PARAMETER);
1218         return 0;
1219     }
1220
1221     if ((dc = get_dc_ptr( hdc )))
1222     {
1223         if (dc->funcs->pSetArcDirection)
1224         {
1225             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1226         }
1227         nOldDirection = dc->ArcDirection;
1228         dc->ArcDirection = nDirection;
1229         release_dc_ptr( dc );
1230     }
1231     return nOldDirection;
1232 }
1233
1234
1235 /***********************************************************************
1236  *           GetWorldTransform    (GDI32.@)
1237  */
1238 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1239 {
1240     DC * dc;
1241     if (!xform) return FALSE;
1242     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1243     *xform = dc->xformWorld2Wnd;
1244     release_dc_ptr( dc );
1245     return TRUE;
1246 }
1247
1248
1249 /***********************************************************************
1250  *           GetTransform    (GDI32.@)
1251  */
1252 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1253 {
1254     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1255     FIXME("stub: don't know what to do for code %x\n", unknown );
1256     return FALSE;
1257 }
1258
1259
1260 /***********************************************************************
1261  *           SetWorldTransform    (GDI32.@)
1262  */
1263 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1264 {
1265     BOOL ret = FALSE;
1266     DC *dc = get_dc_ptr( hdc );
1267
1268     if (!dc) return FALSE;
1269     if (!xform) goto done;
1270
1271     /* Check that graphics mode is GM_ADVANCED */
1272     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1273
1274     if (dc->funcs->pSetWorldTransform)
1275     {
1276         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1277         if (!ret) goto done;
1278     }
1279
1280     dc->xformWorld2Wnd = *xform;
1281     DC_UpdateXforms( dc );
1282     ret = TRUE;
1283  done:
1284     release_dc_ptr( dc );
1285     return ret;
1286 }
1287
1288
1289 /****************************************************************************
1290  * ModifyWorldTransform [GDI32.@]
1291  * Modifies the world transformation for a device context.
1292  *
1293  * PARAMS
1294  *    hdc   [I] Handle to device context
1295  *    xform [I] XFORM structure that will be used to modify the world
1296  *              transformation
1297  *    iMode [I] Specifies in what way to modify the world transformation
1298  *              Possible values:
1299  *              MWT_IDENTITY
1300  *                 Resets the world transformation to the identity matrix.
1301  *                 The parameter xform is ignored.
1302  *              MWT_LEFTMULTIPLY
1303  *                 Multiplies xform into the world transformation matrix from
1304  *                 the left.
1305  *              MWT_RIGHTMULTIPLY
1306  *                 Multiplies xform into the world transformation matrix from
1307  *                 the right.
1308  *
1309  * RETURNS
1310  *  Success: TRUE.
1311  *  Failure: FALSE. Use GetLastError() to determine the cause.
1312  */
1313 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1314     DWORD iMode )
1315 {
1316     BOOL ret = FALSE;
1317     DC *dc = get_dc_ptr( hdc );
1318
1319     /* Check for illegal parameters */
1320     if (!dc) return FALSE;
1321     if (!xform && iMode != MWT_IDENTITY) goto done;
1322
1323     /* Check that graphics mode is GM_ADVANCED */
1324     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1325
1326     if (dc->funcs->pModifyWorldTransform)
1327     {
1328         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1329         if (!ret) goto done;
1330     }
1331
1332     switch (iMode)
1333     {
1334         case MWT_IDENTITY:
1335             dc->xformWorld2Wnd.eM11 = 1.0f;
1336             dc->xformWorld2Wnd.eM12 = 0.0f;
1337             dc->xformWorld2Wnd.eM21 = 0.0f;
1338             dc->xformWorld2Wnd.eM22 = 1.0f;
1339             dc->xformWorld2Wnd.eDx  = 0.0f;
1340             dc->xformWorld2Wnd.eDy  = 0.0f;
1341             break;
1342         case MWT_LEFTMULTIPLY:
1343             CombineTransform( &dc->xformWorld2Wnd, xform,
1344                 &dc->xformWorld2Wnd );
1345             break;
1346         case MWT_RIGHTMULTIPLY:
1347             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1348                 xform );
1349             break;
1350         default:
1351             goto done;
1352     }
1353
1354     DC_UpdateXforms( dc );
1355     ret = TRUE;
1356  done:
1357     release_dc_ptr( dc );
1358     return ret;
1359 }
1360
1361
1362 /****************************************************************************
1363  * CombineTransform [GDI32.@]
1364  * Combines two transformation matrices.
1365  *
1366  * PARAMS
1367  *    xformResult [O] Stores the result of combining the two matrices
1368  *    xform1      [I] Specifies the first matrix to apply
1369  *    xform2      [I] Specifies the second matrix to apply
1370  *
1371  * REMARKS
1372  *    The same matrix can be passed in for more than one of the parameters.
1373  *
1374  * RETURNS
1375  *  Success: TRUE.
1376  *  Failure: FALSE. Use GetLastError() to determine the cause.
1377  */
1378 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1379     const XFORM *xform2 )
1380 {
1381     XFORM xformTemp;
1382
1383     /* Check for illegal parameters */
1384     if (!xformResult || !xform1 || !xform2)
1385         return FALSE;
1386
1387     /* Create the result in a temporary XFORM, since xformResult may be
1388      * equal to xform1 or xform2 */
1389     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1390                      xform1->eM12 * xform2->eM21;
1391     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1392                      xform1->eM12 * xform2->eM22;
1393     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1394                      xform1->eM22 * xform2->eM21;
1395     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1396                      xform1->eM22 * xform2->eM22;
1397     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1398                      xform1->eDy  * xform2->eM21 +
1399                      xform2->eDx;
1400     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1401                      xform1->eDy  * xform2->eM22 +
1402                      xform2->eDy;
1403
1404     /* Copy the result to xformResult */
1405     *xformResult = xformTemp;
1406
1407     return TRUE;
1408 }
1409
1410
1411 /***********************************************************************
1412  *           SetDCHook   (GDI32.@)
1413  *
1414  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1415  */
1416 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1417 {
1418     DC *dc = get_dc_ptr( hdc );
1419
1420     if (!dc) return FALSE;
1421
1422     if (!(dc->flags & DC_SAVED))
1423     {
1424         dc->dwHookData = dwHookData;
1425         dc->hookThunk = hookProc;
1426     }
1427     release_dc_ptr( dc );
1428     return TRUE;
1429 }
1430
1431
1432 /* relay function to call the 16-bit DC hook proc */
1433 static BOOL WINAPI call_dc_hook16( HDC hdc, WORD code, DWORD_PTR data, LPARAM lParam )
1434 {
1435     WORD args[6];
1436     DWORD ret = 0;
1437     DC *dc = get_dc_ptr( hdc );
1438
1439     if (!dc) return FALSE;
1440     if (dc->hookProc)
1441     {
1442         args[5] = HDC_16(hdc);
1443         args[4] = code;
1444         args[3] = HIWORD(data);
1445         args[2] = LOWORD(data);
1446         args[1] = HIWORD(lParam);
1447         args[0] = LOWORD(lParam);
1448         WOWCallback16Ex( (DWORD)dc->hookProc, WCB16_PASCAL, sizeof(args), args, &ret );
1449     }
1450     release_dc_ptr( dc );
1451     return LOWORD(ret);
1452 }
1453
1454 /***********************************************************************
1455  *           SetDCHook   (GDI.190)
1456  */
1457 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1458 {
1459     DC *dc = get_dc_ptr( HDC_32(hdc16) );
1460
1461     if (!dc) return FALSE;
1462     if (!(dc->flags & DC_SAVED))
1463     {
1464         dc->dwHookData = dwHookData;
1465         dc->hookThunk = call_dc_hook16;
1466         dc->hookProc = hookProc;
1467     }
1468     release_dc_ptr( dc );
1469     return TRUE;
1470 }
1471
1472
1473 /***********************************************************************
1474  *           GetDCHook   (GDI.191)
1475  */
1476 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1477 {
1478     HDC hdc = HDC_32( hdc16 );
1479     DC *dc = get_dc_ptr( hdc );
1480     DWORD ret;
1481
1482     if (!dc) return 0;
1483     *phookProc = dc->hookProc;
1484     ret = dc->dwHookData;
1485     release_dc_ptr( dc );
1486     return ret;
1487 }
1488
1489
1490 /***********************************************************************
1491  *           SetHookFlags   (GDI.192)
1492  */
1493 WORD WINAPI SetHookFlags16(HDC16 hdc16, WORD flags)
1494 {
1495     HDC hdc = HDC_32( hdc16 );
1496     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1497     LONG ret = 0;
1498
1499     if (!dc) return 0;
1500
1501     /* "Undocumented Windows" info is slightly confusing. */
1502
1503     TRACE("hDC %p, flags %04x\n",hdc,flags);
1504
1505     if (flags & DCHF_INVALIDATEVISRGN)
1506         ret = InterlockedExchange( &dc->dirty, 1 );
1507     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1508         ret = InterlockedExchange( &dc->dirty, 0 );
1509
1510     GDI_ReleaseObj( dc );
1511     return ret;
1512 }
1513
1514 /***********************************************************************
1515  *           SetICMMode    (GDI32.@)
1516  */
1517 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1518 {
1519 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1520     if (iEnableICM == ICM_OFF) return ICM_OFF;
1521     if (iEnableICM == ICM_ON) return 0;
1522     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1523     return 0;
1524 }
1525
1526 /***********************************************************************
1527  *           GetDeviceGammaRamp    (GDI32.@)
1528  */
1529 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1530 {
1531     BOOL ret = FALSE;
1532     DC *dc = get_dc_ptr( hDC );
1533
1534     if( dc )
1535     {
1536         if (dc->funcs->pGetDeviceGammaRamp)
1537             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1538         release_dc_ptr( dc );
1539     }
1540     return ret;
1541 }
1542
1543 /***********************************************************************
1544  *           SetDeviceGammaRamp    (GDI32.@)
1545  */
1546 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1547 {
1548     BOOL ret = FALSE;
1549     DC *dc = get_dc_ptr( hDC );
1550
1551     if( dc )
1552     {
1553         if (dc->funcs->pSetDeviceGammaRamp)
1554             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1555         release_dc_ptr( dc );
1556     }
1557     return ret;
1558 }
1559
1560 /***********************************************************************
1561  *           GetColorSpace    (GDI32.@)
1562  */
1563 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1564 {
1565 /*FIXME    Need to to whatever GetColorSpace actually does */
1566     return 0;
1567 }
1568
1569 /***********************************************************************
1570  *           CreateColorSpaceA    (GDI32.@)
1571  */
1572 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1573 {
1574   FIXME( "stub\n" );
1575   return 0;
1576 }
1577
1578 /***********************************************************************
1579  *           CreateColorSpaceW    (GDI32.@)
1580  */
1581 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1582 {
1583   FIXME( "stub\n" );
1584   return 0;
1585 }
1586
1587 /***********************************************************************
1588  *           DeleteColorSpace     (GDI32.@)
1589  */
1590 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1591 {
1592   FIXME( "stub\n" );
1593
1594   return TRUE;
1595 }
1596
1597 /***********************************************************************
1598  *           SetColorSpace     (GDI32.@)
1599  */
1600 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1601 {
1602   FIXME( "stub\n" );
1603
1604   return hColorSpace;
1605 }
1606
1607 /***********************************************************************
1608  *           GetBoundsRect    (GDI32.@)
1609  */
1610 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1611 {
1612     UINT ret;
1613     DC *dc = get_dc_ptr( hdc );
1614
1615     if ( !dc ) return 0;
1616
1617     if (rect) *rect = dc->BoundsRect;
1618
1619     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1620
1621     if (flags & DCB_RESET)
1622     {
1623         dc->BoundsRect.left   = 0;
1624         dc->BoundsRect.top    = 0;
1625         dc->BoundsRect.right  = 0;
1626         dc->BoundsRect.bottom = 0;
1627         dc->flags &= ~DC_BOUNDS_SET;
1628     }
1629     release_dc_ptr( dc );
1630     return ret;
1631 }
1632
1633
1634 /***********************************************************************
1635  *           SetBoundsRect    (GDI32.@)
1636  */
1637 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1638 {
1639     UINT ret;
1640     DC *dc;
1641
1642     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1643     if (!(dc = get_dc_ptr( hdc ))) return 0;
1644
1645     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1646           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1647
1648     if (flags & DCB_RESET)
1649     {
1650         dc->BoundsRect.left   = 0;
1651         dc->BoundsRect.top    = 0;
1652         dc->BoundsRect.right  = 0;
1653         dc->BoundsRect.bottom = 0;
1654         dc->flags &= ~DC_BOUNDS_SET;
1655     }
1656
1657     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1658     {
1659         if (dc->flags & DC_BOUNDS_SET)
1660         {
1661             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1662             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1663             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1664             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1665         }
1666         else
1667         {
1668             dc->BoundsRect = *rect;
1669             dc->flags |= DC_BOUNDS_SET;
1670         }
1671     }
1672
1673     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1674     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1675
1676     release_dc_ptr( dc );
1677     return ret;
1678 }
1679
1680
1681 /***********************************************************************
1682  *              GetRelAbs               (GDI32.@)
1683  */
1684 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1685 {
1686     INT ret = 0;
1687     DC *dc = get_dc_ptr( hdc );
1688     if (dc)
1689     {
1690         ret = dc->relAbsMode;
1691         release_dc_ptr( dc );
1692     }
1693     return ret;
1694 }
1695
1696
1697
1698
1699 /***********************************************************************
1700  *              GetBkMode (GDI32.@)
1701  */
1702 INT WINAPI GetBkMode( HDC hdc )
1703 {
1704     INT ret = 0;
1705     DC * dc = get_dc_ptr( hdc );
1706     if (dc)
1707     {
1708         ret = dc->backgroundMode;
1709         release_dc_ptr( dc );
1710     }
1711     return ret;
1712 }
1713
1714
1715 /***********************************************************************
1716  *              SetBkMode (GDI32.@)
1717  */
1718 INT WINAPI SetBkMode( HDC hdc, INT mode )
1719 {
1720     INT ret;
1721     DC *dc;
1722     if ((mode <= 0) || (mode > BKMODE_LAST))
1723     {
1724         SetLastError(ERROR_INVALID_PARAMETER);
1725         return 0;
1726     }
1727     if (!(dc = get_dc_ptr( hdc ))) return 0;
1728
1729     ret = dc->backgroundMode;
1730     if (dc->funcs->pSetBkMode)
1731         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1732             ret = 0;
1733     if (ret)
1734         dc->backgroundMode = mode;
1735     release_dc_ptr( dc );
1736     return ret;
1737 }
1738
1739
1740 /***********************************************************************
1741  *              GetROP2 (GDI32.@)
1742  */
1743 INT WINAPI GetROP2( HDC hdc )
1744 {
1745     INT ret = 0;
1746     DC * dc = get_dc_ptr( hdc );
1747     if (dc)
1748     {
1749         ret = dc->ROPmode;
1750         release_dc_ptr( dc );
1751     }
1752     return ret;
1753 }
1754
1755
1756 /***********************************************************************
1757  *              SetROP2 (GDI32.@)
1758  */
1759 INT WINAPI SetROP2( HDC hdc, INT mode )
1760 {
1761     INT ret;
1762     DC *dc;
1763     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1764     {
1765         SetLastError(ERROR_INVALID_PARAMETER);
1766         return 0;
1767     }
1768     if (!(dc = get_dc_ptr( hdc ))) return 0;
1769     ret = dc->ROPmode;
1770     if (dc->funcs->pSetROP2)
1771         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1772             ret = 0;
1773     if (ret)
1774         dc->ROPmode = mode;
1775     release_dc_ptr( dc );
1776     return ret;
1777 }
1778
1779
1780 /***********************************************************************
1781  *              SetRelAbs (GDI32.@)
1782  */
1783 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1784 {
1785     INT ret;
1786     DC *dc;
1787     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1788     {
1789         SetLastError(ERROR_INVALID_PARAMETER);
1790         return 0;
1791     }
1792     if (!(dc = get_dc_ptr( hdc ))) return 0;
1793     if (dc->funcs->pSetRelAbs)
1794         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1795     else
1796     {
1797         ret = dc->relAbsMode;
1798         dc->relAbsMode = mode;
1799     }
1800     release_dc_ptr( dc );
1801     return ret;
1802 }
1803
1804
1805 /***********************************************************************
1806  *              GetPolyFillMode (GDI32.@)
1807  */
1808 INT WINAPI GetPolyFillMode( HDC hdc )
1809 {
1810     INT ret = 0;
1811     DC * dc = get_dc_ptr( hdc );
1812     if (dc)
1813     {
1814         ret = dc->polyFillMode;
1815         release_dc_ptr( dc );
1816     }
1817     return ret;
1818 }
1819
1820
1821 /***********************************************************************
1822  *              SetPolyFillMode (GDI32.@)
1823  */
1824 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1825 {
1826     INT ret;
1827     DC *dc;
1828     if ((mode <= 0) || (mode > POLYFILL_LAST))
1829     {
1830         SetLastError(ERROR_INVALID_PARAMETER);
1831         return 0;
1832     }
1833     if (!(dc = get_dc_ptr( hdc ))) return 0;
1834     ret = dc->polyFillMode;
1835     if (dc->funcs->pSetPolyFillMode)
1836         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1837             ret = 0;
1838     if (ret)
1839         dc->polyFillMode = mode;
1840     release_dc_ptr( dc );
1841     return ret;
1842 }
1843
1844
1845 /***********************************************************************
1846  *              GetStretchBltMode (GDI32.@)
1847  */
1848 INT WINAPI GetStretchBltMode( HDC hdc )
1849 {
1850     INT ret = 0;
1851     DC * dc = get_dc_ptr( hdc );
1852     if (dc)
1853     {
1854         ret = dc->stretchBltMode;
1855         release_dc_ptr( dc );
1856     }
1857     return ret;
1858 }
1859
1860
1861 /***********************************************************************
1862  *              SetStretchBltMode (GDI32.@)
1863  */
1864 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1865 {
1866     INT ret;
1867     DC *dc;
1868     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1869     {
1870         SetLastError(ERROR_INVALID_PARAMETER);
1871         return 0;
1872     }
1873     if (!(dc = get_dc_ptr( hdc ))) return 0;
1874     ret = dc->stretchBltMode;
1875     if (dc->funcs->pSetStretchBltMode)
1876         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1877             ret = 0;
1878     if (ret)
1879         dc->stretchBltMode = mode;
1880     release_dc_ptr( dc );
1881     return ret;
1882 }
1883
1884
1885 /***********************************************************************
1886  *              GetMapMode (GDI32.@)
1887  */
1888 INT WINAPI GetMapMode( HDC hdc )
1889 {
1890     INT ret = 0;
1891     DC * dc = get_dc_ptr( hdc );
1892     if (dc)
1893     {
1894         ret = dc->MapMode;
1895         release_dc_ptr( dc );
1896     }
1897     return ret;
1898 }
1899
1900
1901 /***********************************************************************
1902  *              GetBrushOrgEx (GDI32.@)
1903  */
1904 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1905 {
1906     DC * dc = get_dc_ptr( hdc );
1907     if (!dc) return FALSE;
1908     pt->x = dc->brushOrgX;
1909     pt->y = dc->brushOrgY;
1910     release_dc_ptr( dc );
1911     return TRUE;
1912 }
1913
1914
1915 /***********************************************************************
1916  *              GetCurrentPositionEx (GDI32.@)
1917  */
1918 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1919 {
1920     DC * dc = get_dc_ptr( hdc );
1921     if (!dc) return FALSE;
1922     pt->x = dc->CursPosX;
1923     pt->y = dc->CursPosY;
1924     release_dc_ptr( dc );
1925     return TRUE;
1926 }
1927
1928
1929 /***********************************************************************
1930  *              GetViewportExtEx (GDI32.@)
1931  */
1932 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1933 {
1934     DC * dc = get_dc_ptr( hdc );
1935     if (!dc) return FALSE;
1936     size->cx = dc->vportExtX;
1937     size->cy = dc->vportExtY;
1938     release_dc_ptr( dc );
1939     return TRUE;
1940 }
1941
1942
1943 /***********************************************************************
1944  *              GetViewportOrgEx (GDI32.@)
1945  */
1946 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1947 {
1948     DC * dc = get_dc_ptr( hdc );
1949     if (!dc) return FALSE;
1950     pt->x = dc->vportOrgX;
1951     pt->y = dc->vportOrgY;
1952     release_dc_ptr( dc );
1953     return TRUE;
1954 }
1955
1956
1957 /***********************************************************************
1958  *              GetWindowExtEx (GDI32.@)
1959  */
1960 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1961 {
1962     DC * dc = get_dc_ptr( hdc );
1963     if (!dc) return FALSE;
1964     size->cx = dc->wndExtX;
1965     size->cy = dc->wndExtY;
1966     release_dc_ptr( dc );
1967     return TRUE;
1968 }
1969
1970
1971 /***********************************************************************
1972  *              GetWindowOrgEx (GDI32.@)
1973  */
1974 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1975 {
1976     DC * dc = get_dc_ptr( hdc );
1977     if (!dc) return FALSE;
1978     pt->x = dc->wndOrgX;
1979     pt->y = dc->wndOrgY;
1980     release_dc_ptr( dc );
1981     return TRUE;
1982 }
1983
1984
1985 /***********************************************************************
1986  *              InquireVisRgn   (GDI.131)
1987  */
1988 HRGN16 WINAPI InquireVisRgn16( HDC16 hdc )
1989 {
1990     HRGN16 ret = 0;
1991     DC * dc = get_dc_ptr( HDC_32(hdc) );
1992     if (dc)
1993     {
1994         ret = HRGN_16(dc->hVisRgn);
1995         release_dc_ptr( dc );
1996     }
1997     return ret;
1998 }
1999
2000
2001 /***********************************************************************
2002  *              GetClipRgn (GDI.173)
2003  */
2004 HRGN16 WINAPI GetClipRgn16( HDC16 hdc )
2005 {
2006     HRGN16 ret = 0;
2007     DC * dc = get_dc_ptr( HDC_32(hdc) );
2008     if (dc)
2009     {
2010         ret = HRGN_16(dc->hClipRgn);
2011         release_dc_ptr( dc );
2012     }
2013     return ret;
2014 }
2015
2016
2017 /***********************************************************************
2018  *           GetLayout    (GDI32.@)
2019  *
2020  * Gets left->right or right->left text layout flags of a dc.
2021  *
2022  */
2023 DWORD WINAPI GetLayout(HDC hdc)
2024 {
2025     DWORD layout = GDI_ERROR;
2026
2027     DC * dc = get_dc_ptr( hdc );
2028     if (dc)
2029     {
2030         layout = dc->layout;
2031         release_dc_ptr( dc );
2032     }
2033
2034     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
2035
2036     return layout;
2037 }
2038
2039 /***********************************************************************
2040  *           SetLayout    (GDI32.@)
2041  *
2042  * Sets left->right or right->left text layout flags of a dc.
2043  *
2044  */
2045 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
2046 {
2047     DWORD oldlayout = GDI_ERROR;
2048
2049     DC * dc = get_dc_ptr( hdc );
2050     if (dc)
2051     {
2052         oldlayout = dc->layout;
2053         dc->layout = layout;
2054         release_dc_ptr( dc );
2055     }
2056
2057     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
2058
2059     return oldlayout;
2060 }
2061
2062 /***********************************************************************
2063  *           GetDCBrushColor    (GDI32.@)
2064  *
2065  * Retrieves the current brush color for the specified device
2066  * context (DC).
2067  *
2068  */
2069 COLORREF WINAPI GetDCBrushColor(HDC hdc)
2070 {
2071     DC *dc;
2072     COLORREF dcBrushColor = CLR_INVALID;
2073
2074     TRACE("hdc(%p)\n", hdc);
2075
2076     dc = get_dc_ptr( hdc );
2077     if (dc)
2078     {
2079         dcBrushColor = dc->dcBrushColor;
2080         release_dc_ptr( dc );
2081     }
2082
2083     return dcBrushColor;
2084 }
2085
2086 /***********************************************************************
2087  *           SetDCBrushColor    (GDI32.@)
2088  *
2089  * Sets the current device context (DC) brush color to the specified
2090  * color value. If the device cannot represent the specified color
2091  * value, the color is set to the nearest physical color.
2092  *
2093  */
2094 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2095 {
2096     DC *dc;
2097     COLORREF oldClr = CLR_INVALID;
2098
2099     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2100
2101     dc = get_dc_ptr( hdc );
2102     if (dc)
2103     {
2104         if (dc->funcs->pSetDCBrushColor)
2105             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2106         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2107         {
2108             /* If DC_BRUSH is selected, update driver pen color */
2109             HBRUSH hBrush = CreateSolidBrush( crColor );
2110             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2111             DeleteObject( hBrush );
2112         }
2113
2114         if (crColor != CLR_INVALID)
2115         {
2116             oldClr = dc->dcBrushColor;
2117             dc->dcBrushColor = crColor;
2118         }
2119
2120         release_dc_ptr( dc );
2121     }
2122
2123     return oldClr;
2124 }
2125
2126 /***********************************************************************
2127  *           GetDCPenColor    (GDI32.@)
2128  *
2129  * Retrieves the current pen color for the specified device
2130  * context (DC).
2131  *
2132  */
2133 COLORREF WINAPI GetDCPenColor(HDC hdc)
2134 {
2135     DC *dc;
2136     COLORREF dcPenColor = CLR_INVALID;
2137
2138     TRACE("hdc(%p)\n", hdc);
2139
2140     dc = get_dc_ptr( hdc );
2141     if (dc)
2142     {
2143         dcPenColor = dc->dcPenColor;
2144         release_dc_ptr( dc );
2145     }
2146
2147     return dcPenColor;
2148 }
2149
2150 /***********************************************************************
2151  *           SetDCPenColor    (GDI32.@)
2152  *
2153  * Sets the current device context (DC) pen color to the specified
2154  * color value. If the device cannot represent the specified color
2155  * value, the color is set to the nearest physical color.
2156  *
2157  */
2158 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2159 {
2160     DC *dc;
2161     COLORREF oldClr = CLR_INVALID;
2162
2163     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2164
2165     dc = get_dc_ptr( hdc );
2166     if (dc)
2167     {
2168         if (dc->funcs->pSetDCPenColor)
2169             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2170         else if (dc->hPen == GetStockObject( DC_PEN ))
2171         {
2172             /* If DC_PEN is selected, update the driver pen color */
2173             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2174             HPEN hPen = CreatePenIndirect( &logpen );
2175             dc->funcs->pSelectPen( dc->physDev, hPen );
2176             DeleteObject( hPen );
2177         }
2178
2179         if (crColor != CLR_INVALID)
2180         {
2181             oldClr = dc->dcPenColor;
2182             dc->dcPenColor = crColor;
2183         }
2184
2185         release_dc_ptr( dc );
2186     }
2187
2188     return oldClr;
2189 }
2190
2191 /***********************************************************************
2192  *           CancelDC    (GDI32.@)
2193  */
2194 BOOL WINAPI CancelDC(HDC hdc)
2195 {
2196     FIXME("stub\n");
2197     return TRUE;
2198 }
2199
2200 /***********************************************************************
2201  *           SetVirtualResolution   (GDI32.@)
2202  *
2203  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
2204  */
2205 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
2206 {
2207     FIXME("(%p %08x %08x %08x %08x): stub!\n", hdc, dw2, dw3, dw4, dw5);
2208     return FALSE;
2209 }
2210
2211 /*******************************************************************
2212  *      GetMiterLimit [GDI32.@]
2213  *
2214  *
2215  */
2216 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2217 {
2218     BOOL bRet = FALSE;
2219     DC *dc;
2220
2221     TRACE("(%p,%p)\n", hdc, peLimit);
2222
2223     dc = get_dc_ptr( hdc );
2224     if (dc)
2225     {
2226         if (peLimit)
2227             *peLimit = dc->miterLimit;
2228
2229         release_dc_ptr( dc );
2230         bRet = TRUE;
2231     }
2232     return bRet;
2233 }
2234
2235 /*******************************************************************
2236  *      SetMiterLimit [GDI32.@]
2237  *
2238  *
2239  */
2240 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2241 {
2242     BOOL bRet = FALSE;
2243     DC *dc;
2244
2245     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2246
2247     dc = get_dc_ptr( hdc );
2248     if (dc)
2249     {
2250         if (peOldLimit)
2251             *peOldLimit = dc->miterLimit;
2252         dc->miterLimit = eNewLimit;
2253         release_dc_ptr( dc );
2254         bRet = TRUE;
2255     }
2256     return bRet;
2257 }
2258
2259 /*******************************************************************
2260  *      GdiIsMetaPrintDC [GDI32.@]
2261  */
2262 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2263 {
2264     FIXME("%p\n", hdc);
2265     return FALSE;
2266 }
2267
2268 /*******************************************************************
2269  *      GdiIsMetaFileDC [GDI32.@]
2270  */
2271 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2272 {
2273     TRACE("%p\n", hdc);
2274
2275     switch( GetObjectType( hdc ) )
2276     {
2277     case OBJ_METADC:
2278     case OBJ_ENHMETADC:
2279         return TRUE;
2280     }
2281     return FALSE;
2282 }
2283
2284 /*******************************************************************
2285  *      GdiIsPlayMetafileDC [GDI32.@]
2286  */
2287 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2288 {
2289     FIXME("%p\n", hdc);
2290     return FALSE;
2291 }