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