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->wndOrgX             = 0;
  91     dc->wndOrgY             = 0;
  92     dc->wndExtX             = 1;
  93     dc->wndExtY             = 1;
  94     dc->vportOrgX           = 0;
  95     dc->vportOrgY           = 0;
  96     dc->vportExtX           = 1;
  97     dc->vportExtY           = 1;
  98     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  99     dc->flags               = 0;
 100     dc->layout              = 0;
 101     dc->hClipRgn            = 0;
 102     dc->hMetaRgn            = 0;
 103     dc->hMetaClipRgn        = 0;
 104     dc->hVisRgn             = 0;
 105     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 106     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 107     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 108     dc->hBitmap             = 0;
 109     dc->hDevice             = 0;
 110     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 111     dc->gdiFont             = 0;
 112     dc->font_code_page      = CP_ACP;
 113     dc->ROPmode             = R2_COPYPEN;
 114     dc->polyFillMode        = ALTERNATE;
 115     dc->stretchBltMode      = BLACKONWHITE;
 116     dc->relAbsMode          = ABSOLUTE;
 117     dc->backgroundMode      = OPAQUE;
 118     dc->backgroundColor     = RGB( 255, 255, 255 );
 119     dc->dcBrushColor        = RGB( 255, 255, 255 );
 120     dc->dcPenColor          = RGB( 0, 0, 0 );
 121     dc->textColor           = RGB( 0, 0, 0 );
 122     dc->brushOrgX           = 0;
 123     dc->brushOrgY           = 0;
 124     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 125     dc->charExtra           = 0;
 126     dc->breakExtra          = 0;
 127     dc->breakRem            = 0;
 128     dc->MapMode             = MM_TEXT;
 129     dc->GraphicsMode        = GM_COMPATIBLE;
 130     dc->pAbortProc          = NULL;
 131     dc->CursPosX            = 0;
 132     dc->CursPosY            = 0;
 133     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 134     dc->xformWorld2Wnd.eM11 = 1.0f;
 135     dc->xformWorld2Wnd.eM12 = 0.0f;
 136     dc->xformWorld2Wnd.eM21 = 0.0f;
 137     dc->xformWorld2Wnd.eM22 = 1.0f;
 138     dc->xformWorld2Wnd.eDx  = 0.0f;
 139     dc->xformWorld2Wnd.eDy  = 0.0f;
 140     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 141     dc->xformVport2World    = dc->xformWorld2Wnd;
 142     dc->vport2WorldValid    = TRUE;
 143     dc->BoundsRect.left     = 0;
 144     dc->BoundsRect.top      = 0;
 145     dc->BoundsRect.right    = 0;
 146     dc->BoundsRect.bottom   = 0;
 147     dc->saved_visrgn        = NULL;
 148     PATH_InitGdiPath(&dc->path);
 149
 150     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 151     {
 152         HeapFree( GetProcessHeap(), 0, dc );
 153         dc = NULL;
 154     }
 155     return dc;
 156 }
 157
 158
 159
 160 /***********************************************************************
 161  *           free_dc_ptr
 162  */
 163 BOOL free_dc_ptr( DC *dc )
 164 {
 165     assert( dc->refcount == 1 );
 166     if (free_gdi_handle( dc->hSelf ) != dc) return FALSE;  /* shouldn't happen */
 167     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 168     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 169     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 170     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 171     PATH_DestroyGdiPath( &dc->path );
 172     return HeapFree( GetProcessHeap(), 0, dc );
 173 }
 174
 175
 176 /***********************************************************************
 177  *           get_dc_ptr
 178  *
 179  * Retrieve a DC pointer but release the GDI lock.
 180  */
 181 DC *get_dc_ptr( HDC hdc )
 182 {
 183     DC *dc = get_dc_obj( hdc );
 184     if (!dc) return NULL;
 185
 186     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 187     {
 188         dc->thread = GetCurrentThreadId();
 189     }
 190     else if (dc->thread != GetCurrentThreadId())
 191     {
 192         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 193         GDI_ReleaseObj( hdc );
 194         return NULL;
 195     }
 196     else InterlockedIncrement( &dc->refcount );
 197
 198     GDI_ReleaseObj( hdc );
 199     return dc;
 200 }
 201
 202
 203 /***********************************************************************
 204  *           release_dc_ptr
 205  */
 206 void release_dc_ptr( DC *dc )
 207 {
 208     LONG ref;
 209
 210     dc->thread = 0;
 211     ref = InterlockedDecrement( &dc->refcount );
 212     assert( ref >= 0 );
 213     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 214 }
 215
 216
 217 /***********************************************************************
 218  *           update_dc
 219  *
 220  * Make sure the DC vis region is up to date.
 221  * This function may call up to USER so the GDI lock should _not_
 222  * be held when calling it.
 223  */
 224 void update_dc( DC *dc )
 225 {
 226     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 227         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 228 }
 229
 230
 231 /***********************************************************************
 232  *           DC_DeleteObject
 233  */
 234 static BOOL DC_DeleteObject( HGDIOBJ handle )
 235 {
 236     return DeleteDC( handle );
 237 }
 238
 239
 240 /***********************************************************************
 241  *           DC_InitDC
 242  *
 243  * Setup device-specific DC values for a newly created DC.
 244  */
 245 void DC_InitDC( DC* dc )
 246 {
 247     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 248     SetTextColor( dc->hSelf, dc->textColor );
 249     SetBkColor( dc->hSelf, dc->backgroundColor );
 250     SelectObject( dc->hSelf, dc->hPen );
 251     SelectObject( dc->hSelf, dc->hBrush );
 252     SelectObject( dc->hSelf, dc->hFont );
 253     CLIPPING_UpdateGCRegion( dc );
 254     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 255 }
 256
 257
 258 /***********************************************************************
 259  *           DC_InvertXform
 260  *
 261  * Computes the inverse of the transformation xformSrc and stores it to
 262  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 263  * is singular.
 264  */
 265 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 266 {
 267     double determinant;
 268
 269     determinant = xformSrc->eM11*xformSrc->eM22 -
 270         xformSrc->eM12*xformSrc->eM21;
 271     if (determinant > -1e-12 && determinant < 1e-12)
 272         return FALSE;
 273
 274     xformDest->eM11 =  xformSrc->eM22 / determinant;
 275     xformDest->eM12 = -xformSrc->eM12 / determinant;
 276     xformDest->eM21 = -xformSrc->eM21 / determinant;
 277     xformDest->eM22 =  xformSrc->eM11 / determinant;
 278     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 279                        xformSrc->eDy * xformDest->eM21;
 280     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 281                        xformSrc->eDy * xformDest->eM22;
 282
 283     return TRUE;
 284 }
 285
 286 /* Construct a transformation to do the window-to-viewport conversion */
 287 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 288 {
 289     double scaleX, scaleY;
 290     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 291     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 292
 293     xform->eM11 = scaleX;
 294     xform->eM12 = 0.0;
 295     xform->eM21 = 0.0;
 296     xform->eM22 = scaleY;
 297     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 298     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 299 }
 300
 301 /***********************************************************************
 302  *           DC_UpdateXforms
 303  *
 304  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 305  * fields of the specified DC by creating a transformation that
 306  * represents the current mapping mode and combining it with the DC's
 307  * world transform. This function should be called whenever the
 308  * parameters associated with the mapping mode (window and viewport
 309  * extents and origins) or the world transform change.
 310  */
 311 void DC_UpdateXforms( DC *dc )
 312 {
 313     XFORM xformWnd2Vport, oldworld2vport;
 314
 315     construct_window_to_viewport(dc, &xformWnd2Vport);
 316
 317     oldworld2vport = dc->xformWorld2Vport;
 318     /* Combine with the world transformation */
 319     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 320         &xformWnd2Vport );
 321
 322     /* Create inverse of world-to-viewport transformation */
 323     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 324         &dc->xformVport2World );
 325
 326     /* Reselect the font and pen back into the dc so that the size
 327        gets updated. */
 328     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 329         !GdiIsMetaFileDC(dc->hSelf))
 330     {
 331         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 332         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 333     }
 334 }
 335
 336
 337 /***********************************************************************
 338  *           save_dc_state
 339  */
 340 INT save_dc_state( HDC hdc )
 341 {
 342     DC * newdc, * dc;
 343     INT ret;
 344
 345     if (!(dc = get_dc_ptr( hdc ))) return 0;
 346     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc ))))
 347     {
 348       release_dc_ptr( dc );
 349       return 0;
 350     }
 351
 352     newdc->flags            = dc->flags | DC_SAVED;
 353     newdc->layout           = dc->layout;
 354     newdc->hPen             = dc->hPen;
 355     newdc->hBrush           = dc->hBrush;
 356     newdc->hFont            = dc->hFont;
 357     newdc->hBitmap          = dc->hBitmap;
 358     newdc->hDevice          = dc->hDevice;
 359     newdc->hPalette         = dc->hPalette;
 360     newdc->ROPmode          = dc->ROPmode;
 361     newdc->polyFillMode     = dc->polyFillMode;
 362     newdc->stretchBltMode   = dc->stretchBltMode;
 363     newdc->relAbsMode       = dc->relAbsMode;
 364     newdc->backgroundMode   = dc->backgroundMode;
 365     newdc->backgroundColor  = dc->backgroundColor;
 366     newdc->textColor        = dc->textColor;
 367     newdc->dcBrushColor     = dc->dcBrushColor;
 368     newdc->dcPenColor       = dc->dcPenColor;
 369     newdc->brushOrgX        = dc->brushOrgX;
 370     newdc->brushOrgY        = dc->brushOrgY;
 371     newdc->textAlign        = dc->textAlign;
 372     newdc->charExtra        = dc->charExtra;
 373     newdc->breakExtra       = dc->breakExtra;
 374     newdc->breakRem         = dc->breakRem;
 375     newdc->MapMode          = dc->MapMode;
 376     newdc->GraphicsMode     = dc->GraphicsMode;
 377     newdc->CursPosX         = dc->CursPosX;
 378     newdc->CursPosY         = dc->CursPosY;
 379     newdc->ArcDirection     = dc->ArcDirection;
 380     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 381     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 382     newdc->xformVport2World = dc->xformVport2World;
 383     newdc->vport2WorldValid = dc->vport2WorldValid;
 384     newdc->wndOrgX          = dc->wndOrgX;
 385     newdc->wndOrgY          = dc->wndOrgY;
 386     newdc->wndExtX          = dc->wndExtX;
 387     newdc->wndExtY          = dc->wndExtY;
 388     newdc->vportOrgX        = dc->vportOrgX;
 389     newdc->vportOrgY        = dc->vportOrgY;
 390     newdc->vportExtX        = dc->vportExtX;
 391     newdc->vportExtY        = dc->vportExtY;
 392     newdc->virtual_res      = dc->virtual_res;
 393     newdc->virtual_size     = dc->virtual_size;
 394     newdc->BoundsRect       = dc->BoundsRect;
 395     newdc->gdiFont          = dc->gdiFont;
 396
 397     newdc->thread    = GetCurrentThreadId();
 398     newdc->refcount  = 1;
 399     newdc->saveLevel = 0;
 400     newdc->saved_dc  = 0;
 401
 402     PATH_InitGdiPath( &newdc->path );
 403
 404     newdc->pAbortProc = NULL;
 405     newdc->hookProc   = NULL;
 406     newdc->saved_visrgn = NULL;
 407
 408     if (!(newdc->hSelf = alloc_gdi_handle( &newdc->header, dc->header.type, &dc_funcs )))
 409     {
 410         HeapFree( GetProcessHeap(), 0, newdc );
 411         release_dc_ptr( dc );
 412         return 0;
 413     }
 414
 415     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 416
 417     newdc->hVisRgn      = 0;
 418     newdc->hClipRgn     = 0;
 419     newdc->hMetaRgn     = 0;
 420     newdc->hMetaClipRgn = 0;
 421     if (dc->hClipRgn)
 422     {
 423         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 424         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 425     }
 426     if (dc->hMetaRgn)
 427     {
 428         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 429         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 430     }
 431     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 432
 433     if (!PATH_AssignGdiPath( &newdc->path, &dc->path ))
 434     {
 435         release_dc_ptr( dc );
 436         free_dc_ptr( newdc );
 437         return 0;
 438     }
 439
 440     newdc->saved_dc = dc->saved_dc;
 441     dc->saved_dc = newdc->hSelf;
 442     ret = ++dc->saveLevel;
 443     release_dc_ptr( newdc );
 444     release_dc_ptr( dc );
 445     return ret;
 446 }
 447
 448
 449 /***********************************************************************
 450  *           restore_dc_state
 451  */
 452 BOOL restore_dc_state( HDC hdc, INT level )
 453 {
 454     HDC hdcs, first_dcs;
 455     DC *dc, *dcs;
 456     INT save_level;
 457
 458     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 459
 460     /* find the state level to restore */
 461
 462     if (abs(level) > dc->saveLevel || level == 0)
 463     {
 464         release_dc_ptr( dc );
 465         return FALSE;
 466     }
 467     if (level < 0) level = dc->saveLevel + level + 1;
 468     first_dcs = dc->saved_dc;
 469     for (hdcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 470     {
 471         if (!(dcs = get_dc_ptr( hdcs )))
 472         {
 473             release_dc_ptr( dc );
 474             return FALSE;
 475         }
 476         hdcs = dcs->saved_dc;
 477         release_dc_ptr( dcs );
 478     }
 479
 480     /* restore the state */
 481
 482     if (!(dcs = get_dc_ptr( hdcs )))
 483     {
 484         release_dc_ptr( dc );
 485         return FALSE;
 486     }
 487     if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 488     {
 489         release_dc_ptr( dcs );
 490         release_dc_ptr( dc );
 491         return FALSE;
 492     }
 493
 494     dc->flags            = dcs->flags & ~DC_SAVED;
 495     dc->layout           = dcs->layout;
 496     dc->hDevice          = dcs->hDevice;
 497     dc->ROPmode          = dcs->ROPmode;
 498     dc->polyFillMode     = dcs->polyFillMode;
 499     dc->stretchBltMode   = dcs->stretchBltMode;
 500     dc->relAbsMode       = dcs->relAbsMode;
 501     dc->backgroundMode   = dcs->backgroundMode;
 502     dc->backgroundColor  = dcs->backgroundColor;
 503     dc->textColor        = dcs->textColor;
 504     dc->dcBrushColor     = dcs->dcBrushColor;
 505     dc->dcPenColor       = dcs->dcPenColor;
 506     dc->brushOrgX        = dcs->brushOrgX;
 507     dc->brushOrgY        = dcs->brushOrgY;
 508     dc->textAlign        = dcs->textAlign;
 509     dc->charExtra        = dcs->charExtra;
 510     dc->breakExtra       = dcs->breakExtra;
 511     dc->breakRem         = dcs->breakRem;
 512     dc->MapMode          = dcs->MapMode;
 513     dc->GraphicsMode     = dcs->GraphicsMode;
 514     dc->CursPosX         = dcs->CursPosX;
 515     dc->CursPosY         = dcs->CursPosY;
 516     dc->ArcDirection     = dcs->ArcDirection;
 517     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 518     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 519     dc->xformVport2World = dcs->xformVport2World;
 520     dc->vport2WorldValid = dcs->vport2WorldValid;
 521     dc->BoundsRect       = dcs->BoundsRect;
 522
 523     dc->wndOrgX          = dcs->wndOrgX;
 524     dc->wndOrgY          = dcs->wndOrgY;
 525     dc->wndExtX          = dcs->wndExtX;
 526     dc->wndExtY          = dcs->wndExtY;
 527     dc->vportOrgX        = dcs->vportOrgX;
 528     dc->vportOrgY        = dcs->vportOrgY;
 529     dc->vportExtX        = dcs->vportExtX;
 530     dc->vportExtY        = dcs->vportExtY;
 531     dc->virtual_res      = dcs->virtual_res;
 532     dc->virtual_size     = dcs->virtual_size;
 533
 534     if (dcs->hClipRgn)
 535     {
 536         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 537         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 538     }
 539     else
 540     {
 541         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 542         dc->hClipRgn = 0;
 543     }
 544     if (dcs->hMetaRgn)
 545     {
 546         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 547         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 548     }
 549     else
 550     {
 551         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 552         dc->hMetaRgn = 0;
 553     }
 554     CLIPPING_UpdateGCRegion( dc );
 555
 556     SelectObject( hdc, dcs->hBitmap );
 557     SelectObject( hdc, dcs->hBrush );
 558     SelectObject( hdc, dcs->hFont );
 559     SelectObject( hdc, dcs->hPen );
 560     SetBkColor( hdc, dcs->backgroundColor);
 561     SetTextColor( hdc, dcs->textColor);
 562     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 563
 564     dc->saved_dc  = dcs->saved_dc;
 565     dcs->saved_dc = 0;
 566     dc->saveLevel = save_level - 1;
 567
 568     release_dc_ptr( dcs );
 569
 570     /* now destroy all the saved DCs */
 571
 572     while (first_dcs)
 573     {
 574         if (!(dcs = get_dc_ptr( first_dcs ))) break;
 575         hdcs = dcs->saved_dc;
 576         free_dc_ptr( dcs );
 577         first_dcs = hdcs;
 578     }
 579     release_dc_ptr( dc );
 580     return TRUE;
 581 }
 582
 583
 584 /***********************************************************************
 585  *           SaveDC    (GDI32.@)
 586  */
 587 INT WINAPI SaveDC( HDC hdc )
 588 {
 589     DC * dc;
 590     INT ret;
 591
 592     if (!(dc = get_dc_ptr( hdc ))) return 0;
 593
 594     if(dc->funcs->pSaveDC)
 595         ret = dc->funcs->pSaveDC( dc->physDev );
 596     else
 597         ret = save_dc_state( hdc );
 598
 599     release_dc_ptr( dc );
 600     return ret;
 601 }
 602
 603
 604 /***********************************************************************
 605  *           RestoreDC    (GDI32.@)
 606  */
 607 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 608 {
 609     DC *dc;
 610     BOOL success;
 611
 612     TRACE("%p %d\n", hdc, level );
 613     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 614     update_dc( dc );
 615
 616     if(dc->funcs->pRestoreDC)
 617         success = dc->funcs->pRestoreDC( dc->physDev, level );
 618     else
 619         success = restore_dc_state( hdc, level );
 620
 621     release_dc_ptr( dc );
 622     return success;
 623 }
 624
 625
 626 /***********************************************************************
 627  *           CreateDCW    (GDI32.@)
 628  */
 629 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 630                       const DEVMODEW *initData )
 631 {
 632     HDC hdc;
 633     DC * dc;
 634     const DC_FUNCTIONS *funcs;
 635     WCHAR buf[300];
 636
 637     GDI_CheckNotLock();
 638
 639     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 640     {
 641         if (!driver)
 642         {
 643             ERR( "no device found for %s\n", debugstr_w(device) );
 644             return 0;
 645         }
 646         strcpyW(buf, driver);
 647     }
 648
 649     if (!(funcs = DRIVER_load_driver( buf )))
 650     {
 651         ERR( "no driver found for %s\n", debugstr_w(buf) );
 652         return 0;
 653     }
 654     if (!(dc = alloc_dc_ptr( funcs, OBJ_DC ))) goto error;
 655     hdc = dc->hSelf;
 656
 657     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 658     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 659
 660     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 661           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 662
 663     if (dc->funcs->pCreateDC &&
 664         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 665     {
 666         WARN("creation aborted by device\n" );
 667         goto error;
 668     }
 669
 670     SetRectRgn( dc->hVisRgn, 0, 0,
 671                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 672
 673     DC_InitDC( dc );
 674     release_dc_ptr( dc );
 675     return hdc;
 676
 677 error:
 678     if (dc) free_dc_ptr( dc );
 679     DRIVER_release_driver( funcs );
 680     return 0;
 681 }
 682
 683
 684 /***********************************************************************
 685  *           CreateDCA    (GDI32.@)
 686  */
 687 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 688                       const DEVMODEA *initData )
 689 {
 690     UNICODE_STRING driverW, deviceW, outputW;
 691     DEVMODEW *initDataW;
 692     HDC ret;
 693
 694     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 695     else driverW.Buffer = NULL;
 696
 697     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 698     else deviceW.Buffer = NULL;
 699
 700     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 701     else outputW.Buffer = NULL;
 702
 703     initDataW = NULL;
 704     if (initData)
 705     {
 706         /* don't convert initData for DISPLAY driver, it's not used */
 707         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 708             initDataW = GdiConvertToDevmodeW(initData);
 709     }
 710
 711     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 712
 713     RtlFreeUnicodeString(&driverW);
 714     RtlFreeUnicodeString(&deviceW);
 715     RtlFreeUnicodeString(&outputW);
 716     HeapFree(GetProcessHeap(), 0, initDataW);
 717     return ret;
 718 }
 719
 720
 721 /***********************************************************************
 722  *           CreateICA    (GDI32.@)
 723  */
 724 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 725                           const DEVMODEA* initData )
 726 {
 727       /* Nothing special yet for ICs */
 728     return CreateDCA( driver, device, output, initData );
 729 }
 730
 731
 732 /***********************************************************************
 733  *           CreateICW    (GDI32.@)
 734  */
 735 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 736                           const DEVMODEW* initData )
 737 {
 738       /* Nothing special yet for ICs */
 739     return CreateDCW( driver, device, output, initData );
 740 }
 741
 742
 743 /***********************************************************************
 744  *           CreateCompatibleDC   (GDI32.@)
 745  */
 746 HDC WINAPI CreateCompatibleDC( HDC hdc )
 747 {
 748     DC *dc, *origDC;
 749     HDC ret;
 750     const DC_FUNCTIONS *funcs = NULL;
 751     PHYSDEV physDev = NULL;
 752
 753     GDI_CheckNotLock();
 754
 755     if ((origDC = get_dc_ptr( hdc )))
 756     {
 757         if (GetObjectType( hdc ) == OBJ_DC)
 758         {
 759             funcs = origDC->funcs;
 760             physDev = origDC->physDev;
 761         }
 762         release_dc_ptr( origDC );
 763         if (funcs) funcs = DRIVER_get_driver( funcs );
 764     }
 765     else if (hdc) return 0;
 766
 767     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 768
 769     if (!(dc = alloc_dc_ptr( funcs, OBJ_MEMDC ))) goto error;
 770
 771     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 772
 773     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 774     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 775
 776     /* Copy the driver-specific physical device info into
 777      * the new DC. The driver may use this read-only info
 778      * while creating the compatible DC below. */
 779     dc->physDev = physDev;
 780     ret = dc->hSelf;
 781
 782     if (dc->funcs->pCreateDC &&
 783         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 784     {
 785         WARN("creation aborted by device\n");
 786         goto error;
 787     }
 788
 789     DC_InitDC( dc );
 790     release_dc_ptr( dc );
 791     return ret;
 792
 793 error:
 794     if (dc) free_dc_ptr( dc );
 795     DRIVER_release_driver( funcs );
 796     return 0;
 797 }
 798
 799
 800 /***********************************************************************
 801  *           DeleteDC    (GDI32.@)
 802  */
 803 BOOL WINAPI DeleteDC( HDC hdc )
 804 {
 805     const DC_FUNCTIONS *funcs = NULL;
 806     DC * dc;
 807
 808     TRACE("%p\n", hdc );
 809
 810     GDI_CheckNotLock();
 811
 812     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 813     if (dc->refcount != 1)
 814     {
 815         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 816         release_dc_ptr( dc );
 817         return FALSE;
 818     }
 819
 820     /* Call hook procedure to check whether is it OK to delete this DC */
 821     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 822     {
 823         release_dc_ptr( dc );
 824         return FALSE;
 825     }
 826
 827     while (dc->saveLevel)
 828     {
 829         DC * dcs;
 830         HDC hdcs = dc->saved_dc;
 831         if (!(dcs = get_dc_ptr( hdcs ))) break;
 832         dc->saved_dc = dcs->saved_dc;
 833         dc->saveLevel--;
 834         free_dc_ptr( dcs );
 835     }
 836
 837     if (!(dc->flags & DC_SAVED))
 838     {
 839         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 840         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 841         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 842         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 843         funcs = dc->funcs;
 844         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 845         dc->physDev = NULL;
 846     }
 847
 848     while (dc->saved_visrgn)
 849     {
 850         struct saved_visrgn *next = dc->saved_visrgn->next;
 851         DeleteObject( dc->saved_visrgn->hrgn );
 852         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 853         dc->saved_visrgn = next;
 854     }
 855
 856     free_dc_ptr( dc );
 857     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 858     return TRUE;
 859 }
 860
 861
 862 /***********************************************************************
 863  *           ResetDCW    (GDI32.@)
 864  */
 865 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 866 {
 867     DC *dc;
 868     HDC ret = hdc;
 869
 870     if ((dc = get_dc_ptr( hdc )))
 871     {
 872         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 873         release_dc_ptr( dc );
 874     }
 875     return ret;
 876 }
 877
 878
 879 /***********************************************************************
 880  *           ResetDCA    (GDI32.@)
 881  */
 882 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 883 {
 884     DEVMODEW *devmodeW;
 885     HDC ret;
 886
 887     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 888     else devmodeW = NULL;
 889
 890     ret = ResetDCW(hdc, devmodeW);
 891
 892     HeapFree(GetProcessHeap(), 0, devmodeW);
 893     return ret;
 894 }
 895
 896
 897 /***********************************************************************
 898  *           GetDeviceCaps    (GDI32.@)
 899  */
 900 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 901 {
 902     DC *dc;
 903     INT ret = 0;
 904
 905     if ((dc = get_dc_ptr( hdc )))
 906     {
 907         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 908         else switch(cap)  /* return meaningful values for some entries */
 909         {
 910         case HORZRES:     ret = 640; break;
 911         case VERTRES:     ret = 480; break;
 912         case BITSPIXEL:   ret = 1; break;
 913         case PLANES:      ret = 1; break;
 914         case NUMCOLORS:   ret = 2; break;
 915         case ASPECTX:     ret = 36; break;
 916         case ASPECTY:     ret = 36; break;
 917         case ASPECTXY:    ret = 51; break;
 918         case LOGPIXELSX:  ret = 72; break;
 919         case LOGPIXELSY:  ret = 72; break;
 920         case SIZEPALETTE: ret = 2; break;
 921         }
 922         release_dc_ptr( dc );
 923     }
 924     return ret;
 925 }
 926
 927
 928 /***********************************************************************
 929  *              GetBkColor (GDI32.@)
 930  */
 931 COLORREF WINAPI GetBkColor( HDC hdc )
 932 {
 933     COLORREF ret = 0;
 934     DC * dc = get_dc_ptr( hdc );
 935     if (dc)
 936     {
 937         ret = dc->backgroundColor;
 938         release_dc_ptr( dc );
 939     }
 940     return ret;
 941 }
 942
 943
 944 /***********************************************************************
 945  *           SetBkColor    (GDI32.@)
 946  */
 947 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 948 {
 949     COLORREF oldColor;
 950     DC * dc = get_dc_ptr( hdc );
 951
 952     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 953
 954     if (!dc) return CLR_INVALID;
 955     oldColor = dc->backgroundColor;
 956     if (dc->funcs->pSetBkColor)
 957     {
 958         color = dc->funcs->pSetBkColor(dc->physDev, color);
 959         if (color == CLR_INVALID)  /* don't change it */
 960         {
 961             color = oldColor;
 962             oldColor = CLR_INVALID;
 963         }
 964     }
 965     dc->backgroundColor = color;
 966     release_dc_ptr( dc );
 967     return oldColor;
 968 }
 969
 970
 971 /***********************************************************************
 972  *              GetTextColor (GDI32.@)
 973  */
 974 COLORREF WINAPI GetTextColor( HDC hdc )
 975 {
 976     COLORREF ret = 0;
 977     DC * dc = get_dc_ptr( hdc );
 978     if (dc)
 979     {
 980         ret = dc->textColor;
 981         release_dc_ptr( dc );
 982     }
 983     return ret;
 984 }
 985
 986
 987 /***********************************************************************
 988  *           SetTextColor    (GDI32.@)
 989  */
 990 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 991 {
 992     COLORREF oldColor;
 993     DC * dc = get_dc_ptr( hdc );
 994
 995     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 996
 997     if (!dc) return CLR_INVALID;
 998     oldColor = dc->textColor;
 999     if (dc->funcs->pSetTextColor)
1000     {
1001         color = dc->funcs->pSetTextColor(dc->physDev, color);
1002         if (color == CLR_INVALID)  /* don't change it */
1003         {
1004             color = oldColor;
1005             oldColor = CLR_INVALID;
1006         }
1007     }
1008     dc->textColor = color;
1009     release_dc_ptr( dc );
1010     return oldColor;
1011 }
1012
1013
1014 /***********************************************************************
1015  *              GetTextAlign (GDI32.@)
1016  */
1017 UINT WINAPI GetTextAlign( HDC hdc )
1018 {
1019     UINT ret = 0;
1020     DC * dc = get_dc_ptr( hdc );
1021     if (dc)
1022     {
1023         ret = dc->textAlign;
1024         release_dc_ptr( dc );
1025     }
1026     return ret;
1027 }
1028
1029
1030 /***********************************************************************
1031  *           SetTextAlign    (GDI32.@)
1032  */
1033 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1034 {
1035     UINT ret;
1036     DC *dc = get_dc_ptr( hdc );
1037
1038     TRACE("hdc=%p align=%d\n", hdc, align);
1039
1040     if (!dc) return 0x0;
1041     ret = dc->textAlign;
1042     if (dc->funcs->pSetTextAlign)
1043         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1044             ret = GDI_ERROR;
1045     if (ret != GDI_ERROR)
1046         dc->textAlign = align;
1047     release_dc_ptr( dc );
1048     return ret;
1049 }
1050
1051 /***********************************************************************
1052  *           GetDCOrgEx  (GDI32.@)
1053  */
1054 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1055 {
1056     DC * dc;
1057
1058     if (!lpp) return FALSE;
1059     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1060
1061     lpp->x = lpp->y = 0;
1062     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1063     release_dc_ptr( dc );
1064     return TRUE;
1065 }
1066
1067
1068 /***********************************************************************
1069  *              GetGraphicsMode (GDI32.@)
1070  */
1071 INT WINAPI GetGraphicsMode( HDC hdc )
1072 {
1073     INT ret = 0;
1074     DC * dc = get_dc_ptr( hdc );
1075     if (dc)
1076     {
1077         ret = dc->GraphicsMode;
1078         release_dc_ptr( dc );
1079     }
1080     return ret;
1081 }
1082
1083
1084 /***********************************************************************
1085  *           SetGraphicsMode    (GDI32.@)
1086  */
1087 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1088 {
1089     INT ret = 0;
1090     DC *dc = get_dc_ptr( hdc );
1091
1092     /* One would think that setting the graphics mode to GM_COMPATIBLE
1093      * would also reset the world transformation matrix to the unity
1094      * matrix. However, in Windows, this is not the case. This doesn't
1095      * make a lot of sense to me, but that's the way it is.
1096      */
1097     if (!dc) return 0;
1098     if ((mode > 0) && (mode <= GM_LAST))
1099     {
1100         ret = dc->GraphicsMode;
1101         dc->GraphicsMode = mode;
1102     }
1103     release_dc_ptr( dc );
1104     return ret;
1105 }
1106
1107
1108 /***********************************************************************
1109  *              GetArcDirection (GDI32.@)
1110  */
1111 INT WINAPI GetArcDirection( HDC hdc )
1112 {
1113     INT ret = 0;
1114     DC * dc = get_dc_ptr( hdc );
1115     if (dc)
1116     {
1117         ret = dc->ArcDirection;
1118         release_dc_ptr( dc );
1119     }
1120     return ret;
1121 }
1122
1123
1124 /***********************************************************************
1125  *           SetArcDirection    (GDI32.@)
1126  */
1127 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1128 {
1129     DC * dc;
1130     INT nOldDirection = 0;
1131
1132     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1133     {
1134         SetLastError(ERROR_INVALID_PARAMETER);
1135         return 0;
1136     }
1137
1138     if ((dc = get_dc_ptr( hdc )))
1139     {
1140         if (dc->funcs->pSetArcDirection)
1141         {
1142             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1143         }
1144         nOldDirection = dc->ArcDirection;
1145         dc->ArcDirection = nDirection;
1146         release_dc_ptr( dc );
1147     }
1148     return nOldDirection;
1149 }
1150
1151
1152 /***********************************************************************
1153  *           GetWorldTransform    (GDI32.@)
1154  */
1155 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1156 {
1157     DC * dc;
1158     if (!xform) return FALSE;
1159     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1160     *xform = dc->xformWorld2Wnd;
1161     release_dc_ptr( dc );
1162     return TRUE;
1163 }
1164
1165
1166 /***********************************************************************
1167  *           GetTransform    (GDI32.@)
1168  *
1169  * Undocumented
1170  *
1171  * Returns one of the co-ordinate space transforms
1172  *
1173  * PARAMS
1174  *    hdc   [I] Device context.
1175  *    which [I] Which xform to return:
1176  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1177  *                  0x304 Page -> Device transform (the mapping mode transform).
1178  *                  0x204 World -> Device transform (the combination of the above two).
1179  *                  0x402 Device -> World transform (the inversion of the above).
1180  *    xform [O] The xform.
1181  *
1182  */
1183 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1184 {
1185     BOOL ret = TRUE;
1186     DC *dc = get_dc_ptr( hdc );
1187     if (!dc) return FALSE;
1188
1189     switch(which)
1190     {
1191     case 0x203:
1192         *xform = dc->xformWorld2Wnd;
1193         break;
1194
1195     case 0x304:
1196         construct_window_to_viewport(dc, xform);
1197         break;
1198
1199     case 0x204:
1200         *xform = dc->xformWorld2Vport;
1201         break;
1202
1203     case 0x402:
1204         *xform = dc->xformVport2World;
1205         break;
1206
1207     default:
1208         FIXME("Unknown code %x\n", which);
1209         ret = FALSE;
1210     }
1211
1212     release_dc_ptr( dc );
1213     return ret;
1214 }
1215
1216
1217 /***********************************************************************
1218  *           SetWorldTransform    (GDI32.@)
1219  */
1220 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1221 {
1222     BOOL ret = FALSE;
1223     DC *dc;
1224
1225     if (!xform) return FALSE;
1226
1227     dc = get_dc_ptr( hdc );
1228     if (!dc) return FALSE;
1229
1230     /* Check that graphics mode is GM_ADVANCED */
1231     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1232
1233     TRACE("eM11 %f eM12 %f eM21 %f eM22 %f eDx %f eDy %f\n",
1234         xform->eM11, xform->eM12, xform->eM21, xform->eM22, xform->eDx, xform->eDy);
1235
1236     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
1237     if (xform->eM11 * xform->eM22 == xform->eM12 * xform->eM21) goto done;
1238
1239     if (dc->funcs->pSetWorldTransform)
1240     {
1241         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1242         if (!ret) goto done;
1243     }
1244
1245     dc->xformWorld2Wnd = *xform;
1246     DC_UpdateXforms( dc );
1247     ret = TRUE;
1248  done:
1249     release_dc_ptr( dc );
1250     return ret;
1251 }
1252
1253
1254 /****************************************************************************
1255  * ModifyWorldTransform [GDI32.@]
1256  * Modifies the world transformation for a device context.
1257  *
1258  * PARAMS
1259  *    hdc   [I] Handle to device context
1260  *    xform [I] XFORM structure that will be used to modify the world
1261  *              transformation
1262  *    iMode [I] Specifies in what way to modify the world transformation
1263  *              Possible values:
1264  *              MWT_IDENTITY
1265  *                 Resets the world transformation to the identity matrix.
1266  *                 The parameter xform is ignored.
1267  *              MWT_LEFTMULTIPLY
1268  *                 Multiplies xform into the world transformation matrix from
1269  *                 the left.
1270  *              MWT_RIGHTMULTIPLY
1271  *                 Multiplies xform into the world transformation matrix from
1272  *                 the right.
1273  *
1274  * RETURNS
1275  *  Success: TRUE.
1276  *  Failure: FALSE. Use GetLastError() to determine the cause.
1277  */
1278 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1279     DWORD iMode )
1280 {
1281     BOOL ret = FALSE;
1282     DC *dc = get_dc_ptr( hdc );
1283
1284     /* Check for illegal parameters */
1285     if (!dc) return FALSE;
1286     if (!xform && iMode != MWT_IDENTITY) goto done;
1287
1288     /* Check that graphics mode is GM_ADVANCED */
1289     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1290
1291     if (dc->funcs->pModifyWorldTransform)
1292     {
1293         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1294         if (!ret) goto done;
1295     }
1296
1297     switch (iMode)
1298     {
1299         case MWT_IDENTITY:
1300             dc->xformWorld2Wnd.eM11 = 1.0f;
1301             dc->xformWorld2Wnd.eM12 = 0.0f;
1302             dc->xformWorld2Wnd.eM21 = 0.0f;
1303             dc->xformWorld2Wnd.eM22 = 1.0f;
1304             dc->xformWorld2Wnd.eDx  = 0.0f;
1305             dc->xformWorld2Wnd.eDy  = 0.0f;
1306             break;
1307         case MWT_LEFTMULTIPLY:
1308             CombineTransform( &dc->xformWorld2Wnd, xform,
1309                 &dc->xformWorld2Wnd );
1310             break;
1311         case MWT_RIGHTMULTIPLY:
1312             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1313                 xform );
1314             break;
1315         default:
1316             goto done;
1317     }
1318
1319     DC_UpdateXforms( dc );
1320     ret = TRUE;
1321  done:
1322     release_dc_ptr( dc );
1323     return ret;
1324 }
1325
1326
1327 /****************************************************************************
1328  * CombineTransform [GDI32.@]
1329  * Combines two transformation matrices.
1330  *
1331  * PARAMS
1332  *    xformResult [O] Stores the result of combining the two matrices
1333  *    xform1      [I] Specifies the first matrix to apply
1334  *    xform2      [I] Specifies the second matrix to apply
1335  *
1336  * REMARKS
1337  *    The same matrix can be passed in for more than one of the parameters.
1338  *
1339  * RETURNS
1340  *  Success: TRUE.
1341  *  Failure: FALSE. Use GetLastError() to determine the cause.
1342  */
1343 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1344     const XFORM *xform2 )
1345 {
1346     XFORM xformTemp;
1347
1348     /* Check for illegal parameters */
1349     if (!xformResult || !xform1 || !xform2)
1350         return FALSE;
1351
1352     /* Create the result in a temporary XFORM, since xformResult may be
1353      * equal to xform1 or xform2 */
1354     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1355                      xform1->eM12 * xform2->eM21;
1356     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1357                      xform1->eM12 * xform2->eM22;
1358     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1359                      xform1->eM22 * xform2->eM21;
1360     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1361                      xform1->eM22 * xform2->eM22;
1362     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1363                      xform1->eDy  * xform2->eM21 +
1364                      xform2->eDx;
1365     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1366                      xform1->eDy  * xform2->eM22 +
1367                      xform2->eDy;
1368
1369     /* Copy the result to xformResult */
1370     *xformResult = xformTemp;
1371
1372     return TRUE;
1373 }
1374
1375
1376 /***********************************************************************
1377  *           SetDCHook   (GDI32.@)
1378  *
1379  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1380  */
1381 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1382 {
1383     DC *dc = get_dc_ptr( hdc );
1384
1385     if (!dc) return FALSE;
1386
1387     if (!(dc->flags & DC_SAVED))
1388     {
1389         dc->dwHookData = dwHookData;
1390         dc->hookProc = hookProc;
1391     }
1392     release_dc_ptr( dc );
1393     return TRUE;
1394 }
1395
1396
1397 /***********************************************************************
1398  *           GetDCHook   (GDI32.@)
1399  *
1400  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1401  */
1402 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1403 {
1404     DC *dc = get_dc_ptr( hdc );
1405     DWORD_PTR ret;
1406
1407     if (!dc) return 0;
1408     if (proc) *proc = dc->hookProc;
1409     ret = dc->dwHookData;
1410     release_dc_ptr( dc );
1411     return ret;
1412 }
1413
1414
1415 /***********************************************************************
1416  *           SetHookFlags   (GDI32.@)
1417  *
1418  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1419  */
1420 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1421 {
1422     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1423     LONG ret = 0;
1424
1425     if (!dc) return 0;
1426
1427     /* "Undocumented Windows" info is slightly confusing. */
1428
1429     TRACE("hDC %p, flags %04x\n",hdc,flags);
1430
1431     if (flags & DCHF_INVALIDATEVISRGN)
1432         ret = InterlockedExchange( &dc->dirty, 1 );
1433     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1434         ret = InterlockedExchange( &dc->dirty, 0 );
1435
1436     GDI_ReleaseObj( dc );
1437     return ret;
1438 }
1439
1440 /***********************************************************************
1441  *           SetICMMode    (GDI32.@)
1442  */
1443 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1444 {
1445 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1446     if (iEnableICM == ICM_OFF) return ICM_OFF;
1447     if (iEnableICM == ICM_ON) return 0;
1448     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1449     return 0;
1450 }
1451
1452 /***********************************************************************
1453  *           GetDeviceGammaRamp    (GDI32.@)
1454  */
1455 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1456 {
1457     BOOL ret = FALSE;
1458     DC *dc = get_dc_ptr( hDC );
1459
1460     if( dc )
1461     {
1462         if (dc->funcs->pGetDeviceGammaRamp)
1463             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1464         release_dc_ptr( dc );
1465     }
1466     return ret;
1467 }
1468
1469 /***********************************************************************
1470  *           SetDeviceGammaRamp    (GDI32.@)
1471  */
1472 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1473 {
1474     BOOL ret = FALSE;
1475     DC *dc = get_dc_ptr( hDC );
1476
1477     if( dc )
1478     {
1479         if (dc->funcs->pSetDeviceGammaRamp)
1480             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1481         release_dc_ptr( dc );
1482     }
1483     return ret;
1484 }
1485
1486 /***********************************************************************
1487  *           GetColorSpace    (GDI32.@)
1488  */
1489 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1490 {
1491 /*FIXME    Need to to whatever GetColorSpace actually does */
1492     return 0;
1493 }
1494
1495 /***********************************************************************
1496  *           CreateColorSpaceA    (GDI32.@)
1497  */
1498 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1499 {
1500   FIXME( "stub\n" );
1501   return 0;
1502 }
1503
1504 /***********************************************************************
1505  *           CreateColorSpaceW    (GDI32.@)
1506  */
1507 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1508 {
1509   FIXME( "stub\n" );
1510   return 0;
1511 }
1512
1513 /***********************************************************************
1514  *           DeleteColorSpace     (GDI32.@)
1515  */
1516 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1517 {
1518   FIXME( "stub\n" );
1519
1520   return TRUE;
1521 }
1522
1523 /***********************************************************************
1524  *           SetColorSpace     (GDI32.@)
1525  */
1526 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1527 {
1528   FIXME( "stub\n" );
1529
1530   return hColorSpace;
1531 }
1532
1533 /***********************************************************************
1534  *           GetBoundsRect    (GDI32.@)
1535  */
1536 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1537 {
1538     UINT ret;
1539     DC *dc = get_dc_ptr( hdc );
1540
1541     if ( !dc ) return 0;
1542
1543     if (rect) *rect = dc->BoundsRect;
1544
1545     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1546
1547     if (flags & DCB_RESET)
1548     {
1549         dc->BoundsRect.left   = 0;
1550         dc->BoundsRect.top    = 0;
1551         dc->BoundsRect.right  = 0;
1552         dc->BoundsRect.bottom = 0;
1553         dc->flags &= ~DC_BOUNDS_SET;
1554     }
1555     release_dc_ptr( dc );
1556     return ret;
1557 }
1558
1559
1560 /***********************************************************************
1561  *           SetBoundsRect    (GDI32.@)
1562  */
1563 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1564 {
1565     UINT ret;
1566     DC *dc;
1567
1568     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1569     if (!(dc = get_dc_ptr( hdc ))) return 0;
1570
1571     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1572           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1573
1574     if (flags & DCB_RESET)
1575     {
1576         dc->BoundsRect.left   = 0;
1577         dc->BoundsRect.top    = 0;
1578         dc->BoundsRect.right  = 0;
1579         dc->BoundsRect.bottom = 0;
1580         dc->flags &= ~DC_BOUNDS_SET;
1581     }
1582
1583     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1584     {
1585         if (dc->flags & DC_BOUNDS_SET)
1586         {
1587             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1588             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1589             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1590             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1591         }
1592         else
1593         {
1594             dc->BoundsRect = *rect;
1595             dc->flags |= DC_BOUNDS_SET;
1596         }
1597     }
1598
1599     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1600     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1601
1602     release_dc_ptr( dc );
1603     return ret;
1604 }
1605
1606
1607 /***********************************************************************
1608  *              GetRelAbs               (GDI32.@)
1609  */
1610 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1611 {
1612     INT ret = 0;
1613     DC *dc = get_dc_ptr( hdc );
1614     if (dc)
1615     {
1616         ret = dc->relAbsMode;
1617         release_dc_ptr( dc );
1618     }
1619     return ret;
1620 }
1621
1622
1623
1624
1625 /***********************************************************************
1626  *              GetBkMode (GDI32.@)
1627  */
1628 INT WINAPI GetBkMode( HDC hdc )
1629 {
1630     INT ret = 0;
1631     DC * dc = get_dc_ptr( hdc );
1632     if (dc)
1633     {
1634         ret = dc->backgroundMode;
1635         release_dc_ptr( dc );
1636     }
1637     return ret;
1638 }
1639
1640
1641 /***********************************************************************
1642  *              SetBkMode (GDI32.@)
1643  */
1644 INT WINAPI SetBkMode( HDC hdc, INT mode )
1645 {
1646     INT ret;
1647     DC *dc;
1648     if ((mode <= 0) || (mode > BKMODE_LAST))
1649     {
1650         SetLastError(ERROR_INVALID_PARAMETER);
1651         return 0;
1652     }
1653     if (!(dc = get_dc_ptr( hdc ))) return 0;
1654
1655     ret = dc->backgroundMode;
1656     if (dc->funcs->pSetBkMode)
1657         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1658             ret = 0;
1659     if (ret)
1660         dc->backgroundMode = mode;
1661     release_dc_ptr( dc );
1662     return ret;
1663 }
1664
1665
1666 /***********************************************************************
1667  *              GetROP2 (GDI32.@)
1668  */
1669 INT WINAPI GetROP2( HDC hdc )
1670 {
1671     INT ret = 0;
1672     DC * dc = get_dc_ptr( hdc );
1673     if (dc)
1674     {
1675         ret = dc->ROPmode;
1676         release_dc_ptr( dc );
1677     }
1678     return ret;
1679 }
1680
1681
1682 /***********************************************************************
1683  *              SetROP2 (GDI32.@)
1684  */
1685 INT WINAPI SetROP2( HDC hdc, INT mode )
1686 {
1687     INT ret;
1688     DC *dc;
1689     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1690     {
1691         SetLastError(ERROR_INVALID_PARAMETER);
1692         return 0;
1693     }
1694     if (!(dc = get_dc_ptr( hdc ))) return 0;
1695     ret = dc->ROPmode;
1696     if (dc->funcs->pSetROP2)
1697         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1698             ret = 0;
1699     if (ret)
1700         dc->ROPmode = mode;
1701     release_dc_ptr( dc );
1702     return ret;
1703 }
1704
1705
1706 /***********************************************************************
1707  *              SetRelAbs (GDI32.@)
1708  */
1709 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1710 {
1711     INT ret;
1712     DC *dc;
1713     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1714     {
1715         SetLastError(ERROR_INVALID_PARAMETER);
1716         return 0;
1717     }
1718     if (!(dc = get_dc_ptr( hdc ))) return 0;
1719     if (dc->funcs->pSetRelAbs)
1720         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1721     else
1722     {
1723         ret = dc->relAbsMode;
1724         dc->relAbsMode = mode;
1725     }
1726     release_dc_ptr( dc );
1727     return ret;
1728 }
1729
1730
1731 /***********************************************************************
1732  *              GetPolyFillMode (GDI32.@)
1733  */
1734 INT WINAPI GetPolyFillMode( HDC hdc )
1735 {
1736     INT ret = 0;
1737     DC * dc = get_dc_ptr( hdc );
1738     if (dc)
1739     {
1740         ret = dc->polyFillMode;
1741         release_dc_ptr( dc );
1742     }
1743     return ret;
1744 }
1745
1746
1747 /***********************************************************************
1748  *              SetPolyFillMode (GDI32.@)
1749  */
1750 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1751 {
1752     INT ret;
1753     DC *dc;
1754     if ((mode <= 0) || (mode > POLYFILL_LAST))
1755     {
1756         SetLastError(ERROR_INVALID_PARAMETER);
1757         return 0;
1758     }
1759     if (!(dc = get_dc_ptr( hdc ))) return 0;
1760     ret = dc->polyFillMode;
1761     if (dc->funcs->pSetPolyFillMode)
1762         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1763             ret = 0;
1764     if (ret)
1765         dc->polyFillMode = mode;
1766     release_dc_ptr( dc );
1767     return ret;
1768 }
1769
1770
1771 /***********************************************************************
1772  *              GetStretchBltMode (GDI32.@)
1773  */
1774 INT WINAPI GetStretchBltMode( HDC hdc )
1775 {
1776     INT ret = 0;
1777     DC * dc = get_dc_ptr( hdc );
1778     if (dc)
1779     {
1780         ret = dc->stretchBltMode;
1781         release_dc_ptr( dc );
1782     }
1783     return ret;
1784 }
1785
1786
1787 /***********************************************************************
1788  *              SetStretchBltMode (GDI32.@)
1789  */
1790 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1791 {
1792     INT ret;
1793     DC *dc;
1794     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1795     {
1796         SetLastError(ERROR_INVALID_PARAMETER);
1797         return 0;
1798     }
1799     if (!(dc = get_dc_ptr( hdc ))) return 0;
1800     ret = dc->stretchBltMode;
1801     if (dc->funcs->pSetStretchBltMode)
1802         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1803             ret = 0;
1804     if (ret)
1805         dc->stretchBltMode = mode;
1806     release_dc_ptr( dc );
1807     return ret;
1808 }
1809
1810
1811 /***********************************************************************
1812  *              GetMapMode (GDI32.@)
1813  */
1814 INT WINAPI GetMapMode( HDC hdc )
1815 {
1816     INT ret = 0;
1817     DC * dc = get_dc_ptr( hdc );
1818     if (dc)
1819     {
1820         ret = dc->MapMode;
1821         release_dc_ptr( dc );
1822     }
1823     return ret;
1824 }
1825
1826
1827 /***********************************************************************
1828  *              GetBrushOrgEx (GDI32.@)
1829  */
1830 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1831 {
1832     DC * dc = get_dc_ptr( hdc );
1833     if (!dc) return FALSE;
1834     pt->x = dc->brushOrgX;
1835     pt->y = dc->brushOrgY;
1836     release_dc_ptr( dc );
1837     return TRUE;
1838 }
1839
1840
1841 /***********************************************************************
1842  *              GetCurrentPositionEx (GDI32.@)
1843  */
1844 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1845 {
1846     DC * dc = get_dc_ptr( hdc );
1847     if (!dc) return FALSE;
1848     pt->x = dc->CursPosX;
1849     pt->y = dc->CursPosY;
1850     release_dc_ptr( dc );
1851     return TRUE;
1852 }
1853
1854
1855 /***********************************************************************
1856  *              GetViewportExtEx (GDI32.@)
1857  */
1858 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1859 {
1860     DC * dc = get_dc_ptr( hdc );
1861     if (!dc) return FALSE;
1862     size->cx = dc->vportExtX;
1863     size->cy = dc->vportExtY;
1864     release_dc_ptr( dc );
1865     return TRUE;
1866 }
1867
1868
1869 /***********************************************************************
1870  *              GetViewportOrgEx (GDI32.@)
1871  */
1872 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1873 {
1874     DC * dc = get_dc_ptr( hdc );
1875     if (!dc) return FALSE;
1876     pt->x = dc->vportOrgX;
1877     pt->y = dc->vportOrgY;
1878     release_dc_ptr( dc );
1879     return TRUE;
1880 }
1881
1882
1883 /***********************************************************************
1884  *              GetWindowExtEx (GDI32.@)
1885  */
1886 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1887 {
1888     DC * dc = get_dc_ptr( hdc );
1889     if (!dc) return FALSE;
1890     size->cx = dc->wndExtX;
1891     size->cy = dc->wndExtY;
1892     release_dc_ptr( dc );
1893     return TRUE;
1894 }
1895
1896
1897 /***********************************************************************
1898  *              GetWindowOrgEx (GDI32.@)
1899  */
1900 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1901 {
1902     DC * dc = get_dc_ptr( hdc );
1903     if (!dc) return FALSE;
1904     pt->x = dc->wndOrgX;
1905     pt->y = dc->wndOrgY;
1906     release_dc_ptr( dc );
1907     return TRUE;
1908 }
1909
1910
1911 /***********************************************************************
1912  *           GetLayout    (GDI32.@)
1913  *
1914  * Gets left->right or right->left text layout flags of a dc.
1915  *
1916  */
1917 DWORD WINAPI GetLayout(HDC hdc)
1918 {
1919     DWORD layout = GDI_ERROR;
1920
1921     DC * dc = get_dc_ptr( hdc );
1922     if (dc)
1923     {
1924         layout = dc->layout;
1925         release_dc_ptr( dc );
1926     }
1927
1928     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1929
1930     return layout;
1931 }
1932
1933 /***********************************************************************
1934  *           SetLayout    (GDI32.@)
1935  *
1936  * Sets left->right or right->left text layout flags of a dc.
1937  *
1938  */
1939 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1940 {
1941     DWORD oldlayout = GDI_ERROR;
1942
1943     DC * dc = get_dc_ptr( hdc );
1944     if (dc)
1945     {
1946         oldlayout = dc->layout;
1947         dc->layout = layout;
1948         release_dc_ptr( dc );
1949     }
1950
1951     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1952
1953     return oldlayout;
1954 }
1955
1956 /***********************************************************************
1957  *           GetDCBrushColor    (GDI32.@)
1958  *
1959  * Retrieves the current brush color for the specified device
1960  * context (DC).
1961  *
1962  */
1963 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1964 {
1965     DC *dc;
1966     COLORREF dcBrushColor = CLR_INVALID;
1967
1968     TRACE("hdc(%p)\n", hdc);
1969
1970     dc = get_dc_ptr( hdc );
1971     if (dc)
1972     {
1973         dcBrushColor = dc->dcBrushColor;
1974         release_dc_ptr( dc );
1975     }
1976
1977     return dcBrushColor;
1978 }
1979
1980 /***********************************************************************
1981  *           SetDCBrushColor    (GDI32.@)
1982  *
1983  * Sets the current device context (DC) brush color to the specified
1984  * color value. If the device cannot represent the specified color
1985  * value, the color is set to the nearest physical color.
1986  *
1987  */
1988 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1989 {
1990     DC *dc;
1991     COLORREF oldClr = CLR_INVALID;
1992
1993     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1994
1995     dc = get_dc_ptr( hdc );
1996     if (dc)
1997     {
1998         if (dc->funcs->pSetDCBrushColor)
1999             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2000         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2001         {
2002             /* If DC_BRUSH is selected, update driver pen color */
2003             HBRUSH hBrush = CreateSolidBrush( crColor );
2004             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2005             DeleteObject( hBrush );
2006         }
2007
2008         if (crColor != CLR_INVALID)
2009         {
2010             oldClr = dc->dcBrushColor;
2011             dc->dcBrushColor = crColor;
2012         }
2013
2014         release_dc_ptr( dc );
2015     }
2016
2017     return oldClr;
2018 }
2019
2020 /***********************************************************************
2021  *           GetDCPenColor    (GDI32.@)
2022  *
2023  * Retrieves the current pen color for the specified device
2024  * context (DC).
2025  *
2026  */
2027 COLORREF WINAPI GetDCPenColor(HDC hdc)
2028 {
2029     DC *dc;
2030     COLORREF dcPenColor = CLR_INVALID;
2031
2032     TRACE("hdc(%p)\n", hdc);
2033
2034     dc = get_dc_ptr( hdc );
2035     if (dc)
2036     {
2037         dcPenColor = dc->dcPenColor;
2038         release_dc_ptr( dc );
2039     }
2040
2041     return dcPenColor;
2042 }
2043
2044 /***********************************************************************
2045  *           SetDCPenColor    (GDI32.@)
2046  *
2047  * Sets the current device context (DC) pen color to the specified
2048  * color value. If the device cannot represent the specified color
2049  * value, the color is set to the nearest physical color.
2050  *
2051  */
2052 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2053 {
2054     DC *dc;
2055     COLORREF oldClr = CLR_INVALID;
2056
2057     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2058
2059     dc = get_dc_ptr( hdc );
2060     if (dc)
2061     {
2062         if (dc->funcs->pSetDCPenColor)
2063             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2064         else if (dc->hPen == GetStockObject( DC_PEN ))
2065         {
2066             /* If DC_PEN is selected, update the driver pen color */
2067             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2068             HPEN hPen = CreatePenIndirect( &logpen );
2069             dc->funcs->pSelectPen( dc->physDev, hPen );
2070             DeleteObject( hPen );
2071         }
2072
2073         if (crColor != CLR_INVALID)
2074         {
2075             oldClr = dc->dcPenColor;
2076             dc->dcPenColor = crColor;
2077         }
2078
2079         release_dc_ptr( dc );
2080     }
2081
2082     return oldClr;
2083 }
2084
2085 /***********************************************************************
2086  *           CancelDC    (GDI32.@)
2087  */
2088 BOOL WINAPI CancelDC(HDC hdc)
2089 {
2090     FIXME("stub\n");
2091     return TRUE;
2092 }
2093
2094 /*******************************************************************
2095  *      GetMiterLimit [GDI32.@]
2096  *
2097  *
2098  */
2099 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2100 {
2101     BOOL bRet = FALSE;
2102     DC *dc;
2103
2104     TRACE("(%p,%p)\n", hdc, peLimit);
2105
2106     dc = get_dc_ptr( hdc );
2107     if (dc)
2108     {
2109         if (peLimit)
2110             *peLimit = dc->miterLimit;
2111
2112         release_dc_ptr( dc );
2113         bRet = TRUE;
2114     }
2115     return bRet;
2116 }
2117
2118 /*******************************************************************
2119  *      SetMiterLimit [GDI32.@]
2120  *
2121  *
2122  */
2123 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2124 {
2125     BOOL bRet = FALSE;
2126     DC *dc;
2127
2128     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2129
2130     dc = get_dc_ptr( hdc );
2131     if (dc)
2132     {
2133         if (peOldLimit)
2134             *peOldLimit = dc->miterLimit;
2135         dc->miterLimit = eNewLimit;
2136         release_dc_ptr( dc );
2137         bRet = TRUE;
2138     }
2139     return bRet;
2140 }
2141
2142 /*******************************************************************
2143  *      GdiIsMetaPrintDC [GDI32.@]
2144  */
2145 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2146 {
2147     FIXME("%p\n", hdc);
2148     return FALSE;
2149 }
2150
2151 /*******************************************************************
2152  *      GdiIsMetaFileDC [GDI32.@]
2153  */
2154 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2155 {
2156     TRACE("%p\n", hdc);
2157
2158     switch( GetObjectType( hdc ) )
2159     {
2160     case OBJ_METADC:
2161     case OBJ_ENHMETADC:
2162         return TRUE;
2163     }
2164     return FALSE;
2165 }
2166
2167 /*******************************************************************
2168  *      GdiIsPlayMetafileDC [GDI32.@]
2169  */
2170 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2171 {
2172     FIXME("%p\n", hdc);
2173     return FALSE;
2174 }