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 "gdi_private.h"
  34 #include "wine/unicode.h"
  35 #include "wine/debug.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  38
  39 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  40
  41 static BOOL DC_DeleteObject( HGDIOBJ handle );
  42
  43 static const struct gdi_obj_funcs dc_funcs =
  44 {
  45     NULL,             /* pSelectObject */
  46     NULL,             /* pGetObjectA */
  47     NULL,             /* pGetObjectW */
  48     NULL,             /* pUnrealizeObject */
  49     DC_DeleteObject   /* pDeleteObject */
  50 };
  51
  52
  53 static inline DC *get_dc_obj( HDC hdc )
  54 {
  55     DC *dc = GDI_GetObjPtr( hdc, 0 );
  56     if (!dc) return NULL;
  57
  58     if ((dc->header.type != OBJ_DC) &&
  59         (dc->header.type != OBJ_MEMDC) &&
  60         (dc->header.type != OBJ_METADC) &&
  61         (dc->header.type != OBJ_ENHMETADC))
  62     {
  63         GDI_ReleaseObj( hdc );
  64         SetLastError( ERROR_INVALID_HANDLE );
  65         dc = NULL;
  66     }
  67     return dc;
  68 }
  69
  70
  71 /***********************************************************************
  72  *           alloc_dc_ptr
  73  */
  74 DC *alloc_dc_ptr( const DC_FUNCTIONS *funcs, WORD magic )
  75 {
  76     DC *dc;
  77
  78     if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
  79
  80     dc->funcs               = funcs;
  81     dc->nulldrv.funcs       = &null_driver;
  82     dc->nulldrv.next        = NULL;
  83     dc->physDev             = &dc->nulldrv;
  84     dc->thread              = GetCurrentThreadId();
  85     dc->refcount            = 1;
  86     dc->dirty               = 0;
  87     dc->saveLevel           = 0;
  88     dc->saved_dc            = 0;
  89     dc->dwHookData          = 0;
  90     dc->hookProc            = 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->mapperFlags         = 0;
 126     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 127     dc->charExtra           = 0;
 128     dc->breakExtra          = 0;
 129     dc->breakRem            = 0;
 130     dc->MapMode             = MM_TEXT;
 131     dc->GraphicsMode        = GM_COMPATIBLE;
 132     dc->pAbortProc          = NULL;
 133     dc->CursPosX            = 0;
 134     dc->CursPosY            = 0;
 135     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 136     dc->xformWorld2Wnd.eM11 = 1.0f;
 137     dc->xformWorld2Wnd.eM12 = 0.0f;
 138     dc->xformWorld2Wnd.eM21 = 0.0f;
 139     dc->xformWorld2Wnd.eM22 = 1.0f;
 140     dc->xformWorld2Wnd.eDx  = 0.0f;
 141     dc->xformWorld2Wnd.eDy  = 0.0f;
 142     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 143     dc->xformVport2World    = dc->xformWorld2Wnd;
 144     dc->vport2WorldValid    = TRUE;
 145     dc->BoundsRect.left     = 0;
 146     dc->BoundsRect.top      = 0;
 147     dc->BoundsRect.right    = 0;
 148     dc->BoundsRect.bottom   = 0;
 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     dc->nulldrv.hdc = dc->hSelf;
 157     return dc;
 158 }
 159
 160
 161
 162 /***********************************************************************
 163  *           free_dc_ptr
 164  */
 165 BOOL free_dc_ptr( DC *dc )
 166 {
 167     assert( dc->refcount == 1 );
 168     if (free_gdi_handle( dc->hSelf ) != dc) return FALSE;  /* shouldn't happen */
 169     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 170     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 171     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 172     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 173     PATH_DestroyGdiPath( &dc->path );
 174     return HeapFree( GetProcessHeap(), 0, dc );
 175 }
 176
 177
 178 /***********************************************************************
 179  *           get_dc_ptr
 180  *
 181  * Retrieve a DC pointer but release the GDI lock.
 182  */
 183 DC *get_dc_ptr( HDC hdc )
 184 {
 185     DC *dc = get_dc_obj( hdc );
 186     if (!dc) return NULL;
 187
 188     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 189     {
 190         dc->thread = GetCurrentThreadId();
 191     }
 192     else if (dc->thread != GetCurrentThreadId())
 193     {
 194         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 195         GDI_ReleaseObj( hdc );
 196         return NULL;
 197     }
 198     else InterlockedIncrement( &dc->refcount );
 199
 200     GDI_ReleaseObj( hdc );
 201     return dc;
 202 }
 203
 204
 205 /***********************************************************************
 206  *           release_dc_ptr
 207  */
 208 void release_dc_ptr( DC *dc )
 209 {
 210     LONG ref;
 211
 212     dc->thread = 0;
 213     ref = InterlockedDecrement( &dc->refcount );
 214     assert( ref >= 0 );
 215     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 216 }
 217
 218
 219 /***********************************************************************
 220  *           update_dc
 221  *
 222  * Make sure the DC vis region is up to date.
 223  * This function may call up to USER so the GDI lock should _not_
 224  * be held when calling it.
 225  */
 226 void update_dc( DC *dc )
 227 {
 228     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 229         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 230 }
 231
 232
 233 /***********************************************************************
 234  *           push_dc_driver
 235  *
 236  * Push a driver on top of the DC driver stack.
 237  */
 238 void push_dc_driver( DC * dc, PHYSDEV physdev )
 239 {
 240     physdev->next = dc->physDev;
 241     physdev->hdc = dc->hSelf;
 242     dc->physDev = physdev;
 243     dc->funcs = physdev->funcs;
 244 }
 245
 246
 247 /***********************************************************************
 248  *           pop_dc_driver
 249  *
 250  * Pop the top driver from the DC driver stack.
 251  */
 252 void pop_dc_driver( DC * dc, PHYSDEV physdev )
 253 {
 254     assert( physdev == dc->physDev );
 255     assert( physdev != &dc->nulldrv );
 256     dc->physDev = physdev->next;
 257     dc->funcs = dc->physDev->funcs;
 258 }
 259
 260
 261 /***********************************************************************
 262  *           DC_DeleteObject
 263  */
 264 static BOOL DC_DeleteObject( HGDIOBJ handle )
 265 {
 266     return DeleteDC( handle );
 267 }
 268
 269
 270 /***********************************************************************
 271  *           DC_InitDC
 272  *
 273  * Setup device-specific DC values for a newly created DC.
 274  */
 275 void DC_InitDC( DC* dc )
 276 {
 277     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 278     SetTextColor( dc->hSelf, dc->textColor );
 279     SetBkColor( dc->hSelf, dc->backgroundColor );
 280     SelectObject( dc->hSelf, dc->hPen );
 281     SelectObject( dc->hSelf, dc->hBrush );
 282     SelectObject( dc->hSelf, dc->hFont );
 283     CLIPPING_UpdateGCRegion( dc );
 284     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 285 }
 286
 287
 288 /***********************************************************************
 289  *           DC_InvertXform
 290  *
 291  * Computes the inverse of the transformation xformSrc and stores it to
 292  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 293  * is singular.
 294  */
 295 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 296 {
 297     double determinant;
 298
 299     determinant = xformSrc->eM11*xformSrc->eM22 -
 300         xformSrc->eM12*xformSrc->eM21;
 301     if (determinant > -1e-12 && determinant < 1e-12)
 302         return FALSE;
 303
 304     xformDest->eM11 =  xformSrc->eM22 / determinant;
 305     xformDest->eM12 = -xformSrc->eM12 / determinant;
 306     xformDest->eM21 = -xformSrc->eM21 / determinant;
 307     xformDest->eM22 =  xformSrc->eM11 / determinant;
 308     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 309                        xformSrc->eDy * xformDest->eM21;
 310     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 311                        xformSrc->eDy * xformDest->eM22;
 312
 313     return TRUE;
 314 }
 315
 316 /* Construct a transformation to do the window-to-viewport conversion */
 317 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 318 {
 319     double scaleX, scaleY;
 320     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 321     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 322
 323     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 324     xform->eM11 = scaleX;
 325     xform->eM12 = 0.0;
 326     xform->eM21 = 0.0;
 327     xform->eM22 = scaleY;
 328     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 329     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 330     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 331 }
 332
 333 /***********************************************************************
 334  *           DC_UpdateXforms
 335  *
 336  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 337  * fields of the specified DC by creating a transformation that
 338  * represents the current mapping mode and combining it with the DC's
 339  * world transform. This function should be called whenever the
 340  * parameters associated with the mapping mode (window and viewport
 341  * extents and origins) or the world transform change.
 342  */
 343 void DC_UpdateXforms( DC *dc )
 344 {
 345     XFORM xformWnd2Vport, oldworld2vport;
 346
 347     construct_window_to_viewport(dc, &xformWnd2Vport);
 348
 349     oldworld2vport = dc->xformWorld2Vport;
 350     /* Combine with the world transformation */
 351     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 352         &xformWnd2Vport );
 353
 354     /* Create inverse of world-to-viewport transformation */
 355     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 356         &dc->xformVport2World );
 357
 358     /* Reselect the font and pen back into the dc so that the size
 359        gets updated. */
 360     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 361         !GdiIsMetaFileDC(dc->hSelf))
 362     {
 363         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 364         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 365     }
 366 }
 367
 368
 369 /***********************************************************************
 370  *           save_dc_state
 371  */
 372 INT save_dc_state( HDC hdc )
 373 {
 374     DC * newdc, * dc;
 375     INT ret;
 376
 377     if (!(dc = get_dc_ptr( hdc ))) return 0;
 378     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc ))))
 379     {
 380       release_dc_ptr( dc );
 381       return 0;
 382     }
 383
 384     newdc->flags            = dc->flags | DC_SAVED;
 385     newdc->layout           = dc->layout;
 386     newdc->hPen             = dc->hPen;
 387     newdc->hBrush           = dc->hBrush;
 388     newdc->hFont            = dc->hFont;
 389     newdc->hBitmap          = dc->hBitmap;
 390     newdc->hDevice          = dc->hDevice;
 391     newdc->hPalette         = dc->hPalette;
 392     newdc->ROPmode          = dc->ROPmode;
 393     newdc->polyFillMode     = dc->polyFillMode;
 394     newdc->stretchBltMode   = dc->stretchBltMode;
 395     newdc->relAbsMode       = dc->relAbsMode;
 396     newdc->backgroundMode   = dc->backgroundMode;
 397     newdc->backgroundColor  = dc->backgroundColor;
 398     newdc->textColor        = dc->textColor;
 399     newdc->dcBrushColor     = dc->dcBrushColor;
 400     newdc->dcPenColor       = dc->dcPenColor;
 401     newdc->brushOrgX        = dc->brushOrgX;
 402     newdc->brushOrgY        = dc->brushOrgY;
 403     newdc->mapperFlags      = dc->mapperFlags;
 404     newdc->textAlign        = dc->textAlign;
 405     newdc->charExtra        = dc->charExtra;
 406     newdc->breakExtra       = dc->breakExtra;
 407     newdc->breakRem         = dc->breakRem;
 408     newdc->MapMode          = dc->MapMode;
 409     newdc->GraphicsMode     = dc->GraphicsMode;
 410     newdc->CursPosX         = dc->CursPosX;
 411     newdc->CursPosY         = dc->CursPosY;
 412     newdc->ArcDirection     = dc->ArcDirection;
 413     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 414     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 415     newdc->xformVport2World = dc->xformVport2World;
 416     newdc->vport2WorldValid = dc->vport2WorldValid;
 417     newdc->wndOrgX          = dc->wndOrgX;
 418     newdc->wndOrgY          = dc->wndOrgY;
 419     newdc->wndExtX          = dc->wndExtX;
 420     newdc->wndExtY          = dc->wndExtY;
 421     newdc->vportOrgX        = dc->vportOrgX;
 422     newdc->vportOrgY        = dc->vportOrgY;
 423     newdc->vportExtX        = dc->vportExtX;
 424     newdc->vportExtY        = dc->vportExtY;
 425     newdc->virtual_res      = dc->virtual_res;
 426     newdc->virtual_size     = dc->virtual_size;
 427     newdc->BoundsRect       = dc->BoundsRect;
 428     newdc->gdiFont          = dc->gdiFont;
 429
 430     newdc->thread    = GetCurrentThreadId();
 431     newdc->refcount  = 1;
 432     newdc->saveLevel = 0;
 433     newdc->saved_dc  = 0;
 434
 435     PATH_InitGdiPath( &newdc->path );
 436
 437     newdc->pAbortProc = NULL;
 438     newdc->hookProc   = NULL;
 439
 440     if (!(newdc->hSelf = alloc_gdi_handle( &newdc->header, dc->header.type, &dc_funcs )))
 441     {
 442         HeapFree( GetProcessHeap(), 0, newdc );
 443         release_dc_ptr( dc );
 444         return 0;
 445     }
 446
 447     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 448
 449     newdc->hVisRgn      = 0;
 450     newdc->hClipRgn     = 0;
 451     newdc->hMetaRgn     = 0;
 452     newdc->hMetaClipRgn = 0;
 453     if (dc->hClipRgn)
 454     {
 455         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 456         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 457     }
 458     if (dc->hMetaRgn)
 459     {
 460         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 461         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 462     }
 463     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 464
 465     if (!PATH_AssignGdiPath( &newdc->path, &dc->path ))
 466     {
 467         release_dc_ptr( dc );
 468         free_dc_ptr( newdc );
 469         return 0;
 470     }
 471
 472     newdc->saved_dc = dc->saved_dc;
 473     dc->saved_dc = newdc->hSelf;
 474     ret = ++dc->saveLevel;
 475     release_dc_ptr( newdc );
 476     release_dc_ptr( dc );
 477     return ret;
 478 }
 479
 480
 481 /***********************************************************************
 482  *           restore_dc_state
 483  */
 484 BOOL restore_dc_state( HDC hdc, INT level )
 485 {
 486     HDC hdcs, first_dcs;
 487     DC *dc, *dcs;
 488     INT save_level;
 489
 490     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 491
 492     /* find the state level to restore */
 493
 494     if (abs(level) > dc->saveLevel || level == 0)
 495     {
 496         release_dc_ptr( dc );
 497         return FALSE;
 498     }
 499     if (level < 0) level = dc->saveLevel + level + 1;
 500     first_dcs = dc->saved_dc;
 501     for (hdcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 502     {
 503         if (!(dcs = get_dc_ptr( hdcs )))
 504         {
 505             release_dc_ptr( dc );
 506             return FALSE;
 507         }
 508         hdcs = dcs->saved_dc;
 509         release_dc_ptr( dcs );
 510     }
 511
 512     /* restore the state */
 513
 514     if (!(dcs = get_dc_ptr( hdcs )))
 515     {
 516         release_dc_ptr( dc );
 517         return FALSE;
 518     }
 519     if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 520     {
 521         release_dc_ptr( dcs );
 522         release_dc_ptr( dc );
 523         return FALSE;
 524     }
 525
 526     dc->flags            = dcs->flags & ~DC_SAVED;
 527     dc->layout           = dcs->layout;
 528     dc->hDevice          = dcs->hDevice;
 529     dc->ROPmode          = dcs->ROPmode;
 530     dc->polyFillMode     = dcs->polyFillMode;
 531     dc->stretchBltMode   = dcs->stretchBltMode;
 532     dc->relAbsMode       = dcs->relAbsMode;
 533     dc->backgroundMode   = dcs->backgroundMode;
 534     dc->backgroundColor  = dcs->backgroundColor;
 535     dc->textColor        = dcs->textColor;
 536     dc->dcBrushColor     = dcs->dcBrushColor;
 537     dc->dcPenColor       = dcs->dcPenColor;
 538     dc->brushOrgX        = dcs->brushOrgX;
 539     dc->brushOrgY        = dcs->brushOrgY;
 540     dc->mapperFlags      = dcs->mapperFlags;
 541     dc->textAlign        = dcs->textAlign;
 542     dc->charExtra        = dcs->charExtra;
 543     dc->breakExtra       = dcs->breakExtra;
 544     dc->breakRem         = dcs->breakRem;
 545     dc->MapMode          = dcs->MapMode;
 546     dc->GraphicsMode     = dcs->GraphicsMode;
 547     dc->CursPosX         = dcs->CursPosX;
 548     dc->CursPosY         = dcs->CursPosY;
 549     dc->ArcDirection     = dcs->ArcDirection;
 550     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 551     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 552     dc->xformVport2World = dcs->xformVport2World;
 553     dc->vport2WorldValid = dcs->vport2WorldValid;
 554     dc->BoundsRect       = dcs->BoundsRect;
 555
 556     dc->wndOrgX          = dcs->wndOrgX;
 557     dc->wndOrgY          = dcs->wndOrgY;
 558     dc->wndExtX          = dcs->wndExtX;
 559     dc->wndExtY          = dcs->wndExtY;
 560     dc->vportOrgX        = dcs->vportOrgX;
 561     dc->vportOrgY        = dcs->vportOrgY;
 562     dc->vportExtX        = dcs->vportExtX;
 563     dc->vportExtY        = dcs->vportExtY;
 564     dc->virtual_res      = dcs->virtual_res;
 565     dc->virtual_size     = dcs->virtual_size;
 566
 567     if (dcs->hClipRgn)
 568     {
 569         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 570         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 571     }
 572     else
 573     {
 574         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 575         dc->hClipRgn = 0;
 576     }
 577     if (dcs->hMetaRgn)
 578     {
 579         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 580         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 581     }
 582     else
 583     {
 584         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 585         dc->hMetaRgn = 0;
 586     }
 587     DC_UpdateXforms( dc );
 588     CLIPPING_UpdateGCRegion( dc );
 589
 590     SelectObject( hdc, dcs->hBitmap );
 591     SelectObject( hdc, dcs->hBrush );
 592     SelectObject( hdc, dcs->hFont );
 593     SelectObject( hdc, dcs->hPen );
 594     SetBkColor( hdc, dcs->backgroundColor);
 595     SetTextColor( hdc, dcs->textColor);
 596     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 597
 598     dc->saved_dc  = dcs->saved_dc;
 599     dcs->saved_dc = 0;
 600     dc->saveLevel = save_level - 1;
 601
 602     release_dc_ptr( dcs );
 603
 604     /* now destroy all the saved DCs */
 605
 606     while (first_dcs)
 607     {
 608         if (!(dcs = get_dc_ptr( first_dcs ))) break;
 609         hdcs = dcs->saved_dc;
 610         free_dc_ptr( dcs );
 611         first_dcs = hdcs;
 612     }
 613     release_dc_ptr( dc );
 614     return TRUE;
 615 }
 616
 617
 618 /***********************************************************************
 619  *           SaveDC    (GDI32.@)
 620  */
 621 INT WINAPI SaveDC( HDC hdc )
 622 {
 623     DC * dc;
 624     INT ret;
 625
 626     if (!(dc = get_dc_ptr( hdc ))) return 0;
 627
 628     if(dc->funcs->pSaveDC)
 629         ret = dc->funcs->pSaveDC( dc->physDev );
 630     else
 631         ret = save_dc_state( hdc );
 632
 633     release_dc_ptr( dc );
 634     return ret;
 635 }
 636
 637
 638 /***********************************************************************
 639  *           RestoreDC    (GDI32.@)
 640  */
 641 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 642 {
 643     DC *dc;
 644     BOOL success;
 645
 646     TRACE("%p %d\n", hdc, level );
 647     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 648     update_dc( dc );
 649
 650     if(dc->funcs->pRestoreDC)
 651         success = dc->funcs->pRestoreDC( dc->physDev, level );
 652     else
 653         success = restore_dc_state( hdc, level );
 654
 655     release_dc_ptr( dc );
 656     return success;
 657 }
 658
 659
 660 /***********************************************************************
 661  *           CreateDCW    (GDI32.@)
 662  */
 663 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 664                       const DEVMODEW *initData )
 665 {
 666     HDC hdc;
 667     DC * dc;
 668     PHYSDEV physdev;
 669     const DC_FUNCTIONS *funcs;
 670     WCHAR buf[300];
 671
 672     GDI_CheckNotLock();
 673
 674     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 675     {
 676         if (!driver)
 677         {
 678             ERR( "no device found for %s\n", debugstr_w(device) );
 679             return 0;
 680         }
 681         strcpyW(buf, driver);
 682     }
 683
 684     if (!(funcs = DRIVER_load_driver( buf )))
 685     {
 686         ERR( "no driver found for %s\n", debugstr_w(buf) );
 687         return 0;
 688     }
 689     if (!(dc = alloc_dc_ptr( funcs, OBJ_DC ))) goto error;
 690     hdc = dc->hSelf;
 691
 692     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 693     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 694
 695     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 696           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 697
 698     if (dc->funcs->pCreateDC &&
 699         !dc->funcs->pCreateDC( hdc, &physdev, buf, device, output, initData ))
 700     {
 701         WARN("creation aborted by device\n" );
 702         goto error;
 703     }
 704
 705     physdev->funcs = funcs;
 706     push_dc_driver( dc, physdev );
 707
 708     dc->vis_rect.left   = 0;
 709     dc->vis_rect.top    = 0;
 710     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 711     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 712     SetRectRgn(dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top, dc->vis_rect.right, dc->vis_rect.bottom);
 713
 714     DC_InitDC( dc );
 715     release_dc_ptr( dc );
 716     return hdc;
 717
 718 error:
 719     if (dc) free_dc_ptr( dc );
 720     return 0;
 721 }
 722
 723
 724 /***********************************************************************
 725  *           CreateDCA    (GDI32.@)
 726  */
 727 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 728                       const DEVMODEA *initData )
 729 {
 730     UNICODE_STRING driverW, deviceW, outputW;
 731     DEVMODEW *initDataW;
 732     HDC ret;
 733
 734     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 735     else driverW.Buffer = NULL;
 736
 737     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 738     else deviceW.Buffer = NULL;
 739
 740     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 741     else outputW.Buffer = NULL;
 742
 743     initDataW = NULL;
 744     if (initData)
 745     {
 746         /* don't convert initData for DISPLAY driver, it's not used */
 747         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 748             initDataW = GdiConvertToDevmodeW(initData);
 749     }
 750
 751     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 752
 753     RtlFreeUnicodeString(&driverW);
 754     RtlFreeUnicodeString(&deviceW);
 755     RtlFreeUnicodeString(&outputW);
 756     HeapFree(GetProcessHeap(), 0, initDataW);
 757     return ret;
 758 }
 759
 760
 761 /***********************************************************************
 762  *           CreateICA    (GDI32.@)
 763  */
 764 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 765                           const DEVMODEA* initData )
 766 {
 767       /* Nothing special yet for ICs */
 768     return CreateDCA( driver, device, output, initData );
 769 }
 770
 771
 772 /***********************************************************************
 773  *           CreateICW    (GDI32.@)
 774  */
 775 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 776                           const DEVMODEW* initData )
 777 {
 778       /* Nothing special yet for ICs */
 779     return CreateDCW( driver, device, output, initData );
 780 }
 781
 782
 783 /***********************************************************************
 784  *           CreateCompatibleDC   (GDI32.@)
 785  */
 786 HDC WINAPI CreateCompatibleDC( HDC hdc )
 787 {
 788     DC *dc, *origDC;
 789     HDC ret;
 790     const DC_FUNCTIONS *funcs = NULL;
 791     PHYSDEV physDev = NULL;
 792
 793     GDI_CheckNotLock();
 794
 795     if (hdc)
 796     {
 797         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 798         if (GetObjectType( hdc ) == OBJ_DC)
 799         {
 800             funcs = origDC->funcs;
 801             physDev = origDC->physDev;
 802         }
 803         release_dc_ptr( origDC );
 804     }
 805
 806     if (!funcs && !(funcs = DRIVER_get_display_driver())) return 0;
 807
 808     if (!(dc = alloc_dc_ptr( funcs, OBJ_MEMDC ))) goto error;
 809
 810     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 811
 812     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 813     dc->vis_rect.left   = 0;
 814     dc->vis_rect.top    = 0;
 815     dc->vis_rect.right  = 1;
 816     dc->vis_rect.bottom = 1;
 817     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 818
 819     ret = dc->hSelf;
 820
 821     /* Pass the driver-specific physical device info into
 822      * the new DC. The driver may use this read-only info
 823      * while creating the compatible DC. */
 824     if (dc->funcs->pCreateDC &&
 825         !dc->funcs->pCreateDC( dc->hSelf, &physDev, NULL, NULL, NULL, NULL ))
 826     {
 827         WARN("creation aborted by device\n");
 828         goto error;
 829     }
 830
 831     physDev->funcs = funcs;
 832     push_dc_driver( dc, physDev );
 833     DC_InitDC( dc );
 834     release_dc_ptr( dc );
 835     return ret;
 836
 837 error:
 838     if (dc) free_dc_ptr( dc );
 839     return 0;
 840 }
 841
 842
 843 /***********************************************************************
 844  *           DeleteDC    (GDI32.@)
 845  */
 846 BOOL WINAPI DeleteDC( HDC hdc )
 847 {
 848     DC * dc;
 849
 850     TRACE("%p\n", hdc );
 851
 852     GDI_CheckNotLock();
 853
 854     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 855     if (dc->refcount != 1)
 856     {
 857         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 858         release_dc_ptr( dc );
 859         return FALSE;
 860     }
 861
 862     /* Call hook procedure to check whether is it OK to delete this DC */
 863     if (dc->hookProc && !dc->hookProc( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 864     {
 865         release_dc_ptr( dc );
 866         return TRUE;
 867     }
 868
 869     while (dc->saveLevel)
 870     {
 871         DC * dcs;
 872         HDC hdcs = dc->saved_dc;
 873         if (!(dcs = get_dc_ptr( hdcs ))) break;
 874         dc->saved_dc = dcs->saved_dc;
 875         dc->saveLevel--;
 876         free_dc_ptr( dcs );
 877     }
 878
 879     if (!(dc->flags & DC_SAVED))
 880     {
 881         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 882         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 883         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 884         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 885         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 886         dc->physDev = NULL;
 887     }
 888
 889     free_dc_ptr( dc );
 890     return TRUE;
 891 }
 892
 893
 894 /***********************************************************************
 895  *           ResetDCW    (GDI32.@)
 896  */
 897 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 898 {
 899     DC *dc;
 900     HDC ret = hdc;
 901
 902     if ((dc = get_dc_ptr( hdc )))
 903     {
 904         if (dc->funcs->pResetDC)
 905         {
 906             ret = dc->funcs->pResetDC( dc->physDev, devmode );
 907             if (ret)  /* reset the visible region */
 908             {
 909                 dc->dirty = 0;
 910                 dc->vis_rect.left   = 0;
 911                 dc->vis_rect.top    = 0;
 912                 dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 913                 dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 914                 SetRectRgn( dc->hVisRgn, dc->vis_rect.left, dc->vis_rect.top,
 915                             dc->vis_rect.right, dc->vis_rect.bottom );
 916                 CLIPPING_UpdateGCRegion( dc );
 917             }
 918         }
 919         release_dc_ptr( dc );
 920     }
 921     return ret;
 922 }
 923
 924
 925 /***********************************************************************
 926  *           ResetDCA    (GDI32.@)
 927  */
 928 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 929 {
 930     DEVMODEW *devmodeW;
 931     HDC ret;
 932
 933     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 934     else devmodeW = NULL;
 935
 936     ret = ResetDCW(hdc, devmodeW);
 937
 938     HeapFree(GetProcessHeap(), 0, devmodeW);
 939     return ret;
 940 }
 941
 942
 943 /***********************************************************************
 944  *           GetDeviceCaps    (GDI32.@)
 945  */
 946 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 947 {
 948     DC *dc;
 949     INT ret = 0;
 950
 951     if ((dc = get_dc_ptr( hdc )))
 952     {
 953         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 954         else switch(cap)  /* return meaningful values for some entries */
 955         {
 956         case HORZRES:     ret = 640; break;
 957         case VERTRES:     ret = 480; break;
 958         case BITSPIXEL:   ret = 1; break;
 959         case PLANES:      ret = 1; break;
 960         case NUMCOLORS:   ret = 2; break;
 961         case ASPECTX:     ret = 36; break;
 962         case ASPECTY:     ret = 36; break;
 963         case ASPECTXY:    ret = 51; break;
 964         case LOGPIXELSX:  ret = 72; break;
 965         case LOGPIXELSY:  ret = 72; break;
 966         case SIZEPALETTE: ret = 2; break;
 967         case TEXTCAPS:
 968             ret = (TC_OP_CHARACTER | TC_OP_STROKE | TC_CP_STROKE |
 969                    TC_CR_ANY | TC_SF_X_YINDEP | TC_SA_DOUBLE | TC_SA_INTEGER |
 970                    TC_SA_CONTIN | TC_UA_ABLE | TC_SO_ABLE | TC_RA_ABLE | TC_VA_ABLE);
 971             break;
 972         }
 973         release_dc_ptr( dc );
 974     }
 975     return ret;
 976 }
 977
 978
 979 /***********************************************************************
 980  *              GetBkColor (GDI32.@)
 981  */
 982 COLORREF WINAPI GetBkColor( HDC hdc )
 983 {
 984     COLORREF ret = 0;
 985     DC * dc = get_dc_ptr( hdc );
 986     if (dc)
 987     {
 988         ret = dc->backgroundColor;
 989         release_dc_ptr( dc );
 990     }
 991     return ret;
 992 }
 993
 994
 995 /***********************************************************************
 996  *           SetBkColor    (GDI32.@)
 997  */
 998 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 999 {
1000     COLORREF ret = CLR_INVALID;
1001     DC * dc = get_dc_ptr( hdc );
1002
1003     TRACE("hdc=%p color=0x%08x\n", hdc, color);
1004
1005     if (dc)
1006     {
1007         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
1008         color = physdev->funcs->pSetBkColor( physdev, color );
1009         if (color != CLR_INVALID)
1010         {
1011             ret = dc->backgroundColor;
1012             dc->backgroundColor = color;
1013         }
1014         release_dc_ptr( dc );
1015     }
1016     return ret;
1017 }
1018
1019
1020 /***********************************************************************
1021  *              GetTextColor (GDI32.@)
1022  */
1023 COLORREF WINAPI GetTextColor( HDC hdc )
1024 {
1025     COLORREF ret = 0;
1026     DC * dc = get_dc_ptr( hdc );
1027     if (dc)
1028     {
1029         ret = dc->textColor;
1030         release_dc_ptr( dc );
1031     }
1032     return ret;
1033 }
1034
1035
1036 /***********************************************************************
1037  *           SetTextColor    (GDI32.@)
1038  */
1039 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
1040 {
1041     COLORREF ret = CLR_INVALID;
1042     DC * dc = get_dc_ptr( hdc );
1043
1044     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
1045
1046     if (dc)
1047     {
1048         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
1049         color = physdev->funcs->pSetTextColor( physdev, color );
1050         if (color != CLR_INVALID)
1051         {
1052             ret = dc->textColor;
1053             dc->textColor = color;
1054         }
1055         release_dc_ptr( dc );
1056     }
1057     return ret;
1058 }
1059
1060
1061 /***********************************************************************
1062  *              GetTextAlign (GDI32.@)
1063  */
1064 UINT WINAPI GetTextAlign( HDC hdc )
1065 {
1066     UINT ret = 0;
1067     DC * dc = get_dc_ptr( hdc );
1068     if (dc)
1069     {
1070         ret = dc->textAlign;
1071         release_dc_ptr( dc );
1072     }
1073     return ret;
1074 }
1075
1076
1077 /***********************************************************************
1078  *           SetTextAlign    (GDI32.@)
1079  */
1080 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1081 {
1082     UINT ret = GDI_ERROR;
1083     DC *dc = get_dc_ptr( hdc );
1084
1085     TRACE("hdc=%p align=%d\n", hdc, align);
1086
1087     if (dc)
1088     {
1089         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
1090         align = physdev->funcs->pSetTextAlign( physdev, align );
1091         if (align != GDI_ERROR)
1092         {
1093             ret = dc->textAlign;
1094             dc->textAlign = align;
1095         }
1096         release_dc_ptr( dc );
1097     }
1098     return ret;
1099 }
1100
1101 /***********************************************************************
1102  *           GetDCOrgEx  (GDI32.@)
1103  */
1104 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1105 {
1106     DC * dc;
1107
1108     if (!lpp) return FALSE;
1109     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1110     lpp->x = dc->vis_rect.left;
1111     lpp->y = dc->vis_rect.top;
1112     release_dc_ptr( dc );
1113     return TRUE;
1114 }
1115
1116
1117 /***********************************************************************
1118  *              GetGraphicsMode (GDI32.@)
1119  */
1120 INT WINAPI GetGraphicsMode( HDC hdc )
1121 {
1122     INT ret = 0;
1123     DC * dc = get_dc_ptr( hdc );
1124     if (dc)
1125     {
1126         ret = dc->GraphicsMode;
1127         release_dc_ptr( dc );
1128     }
1129     return ret;
1130 }
1131
1132
1133 /***********************************************************************
1134  *           SetGraphicsMode    (GDI32.@)
1135  */
1136 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1137 {
1138     INT ret = 0;
1139     DC *dc = get_dc_ptr( hdc );
1140
1141     /* One would think that setting the graphics mode to GM_COMPATIBLE
1142      * would also reset the world transformation matrix to the unity
1143      * matrix. However, in Windows, this is not the case. This doesn't
1144      * make a lot of sense to me, but that's the way it is.
1145      */
1146     if (!dc) return 0;
1147     if ((mode > 0) && (mode <= GM_LAST))
1148     {
1149         ret = dc->GraphicsMode;
1150         dc->GraphicsMode = mode;
1151     }
1152     release_dc_ptr( dc );
1153     return ret;
1154 }
1155
1156
1157 /***********************************************************************
1158  *              GetArcDirection (GDI32.@)
1159  */
1160 INT WINAPI GetArcDirection( HDC hdc )
1161 {
1162     INT ret = 0;
1163     DC * dc = get_dc_ptr( hdc );
1164     if (dc)
1165     {
1166         ret = dc->ArcDirection;
1167         release_dc_ptr( dc );
1168     }
1169     return ret;
1170 }
1171
1172
1173 /***********************************************************************
1174  *           SetArcDirection    (GDI32.@)
1175  */
1176 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1177 {
1178     DC * dc;
1179     INT ret = 0;
1180
1181     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1182     {
1183         SetLastError(ERROR_INVALID_PARAMETER);
1184         return 0;
1185     }
1186
1187     if ((dc = get_dc_ptr( hdc )))
1188     {
1189         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1190         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1191         if (dir)
1192         {
1193             ret = dc->ArcDirection;
1194             dc->ArcDirection = dir;
1195         }
1196         release_dc_ptr( dc );
1197     }
1198     return ret;
1199 }
1200
1201
1202 /***********************************************************************
1203  *           GetWorldTransform    (GDI32.@)
1204  */
1205 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1206 {
1207     DC * dc;
1208     if (!xform) return FALSE;
1209     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1210     *xform = dc->xformWorld2Wnd;
1211     release_dc_ptr( dc );
1212     return TRUE;
1213 }
1214
1215
1216 /***********************************************************************
1217  *           GetTransform    (GDI32.@)
1218  *
1219  * Undocumented
1220  *
1221  * Returns one of the co-ordinate space transforms
1222  *
1223  * PARAMS
1224  *    hdc   [I] Device context.
1225  *    which [I] Which xform to return:
1226  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1227  *                  0x304 Page -> Device transform (the mapping mode transform).
1228  *                  0x204 World -> Device transform (the combination of the above two).
1229  *                  0x402 Device -> World transform (the inversion of the above).
1230  *    xform [O] The xform.
1231  *
1232  */
1233 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1234 {
1235     BOOL ret = TRUE;
1236     DC *dc = get_dc_ptr( hdc );
1237     if (!dc) return FALSE;
1238
1239     switch(which)
1240     {
1241     case 0x203:
1242         *xform = dc->xformWorld2Wnd;
1243         break;
1244
1245     case 0x304:
1246         construct_window_to_viewport(dc, xform);
1247         break;
1248
1249     case 0x204:
1250         *xform = dc->xformWorld2Vport;
1251         break;
1252
1253     case 0x402:
1254         *xform = dc->xformVport2World;
1255         break;
1256
1257     default:
1258         FIXME("Unknown code %x\n", which);
1259         ret = FALSE;
1260     }
1261
1262     release_dc_ptr( dc );
1263     return ret;
1264 }
1265
1266
1267 /***********************************************************************
1268  *           SetWorldTransform    (GDI32.@)
1269  */
1270 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1271 {
1272     BOOL ret = FALSE;
1273     DC *dc;
1274
1275     if (!xform) return FALSE;
1276
1277     dc = get_dc_ptr( hdc );
1278     if (!dc) return FALSE;
1279
1280     /* Check that graphics mode is GM_ADVANCED */
1281     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1282
1283     TRACE("eM11 %f eM12 %f eM21 %f eM22 %f eDx %f eDy %f\n",
1284         xform->eM11, xform->eM12, xform->eM21, xform->eM22, xform->eDx, xform->eDy);
1285
1286     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
1287     if (xform->eM11 * xform->eM22 == xform->eM12 * xform->eM21) goto done;
1288
1289     if (dc->funcs->pSetWorldTransform)
1290     {
1291         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1292         if (!ret) goto done;
1293     }
1294
1295     dc->xformWorld2Wnd = *xform;
1296     DC_UpdateXforms( dc );
1297     ret = TRUE;
1298  done:
1299     release_dc_ptr( dc );
1300     return ret;
1301 }
1302
1303
1304 /****************************************************************************
1305  * ModifyWorldTransform [GDI32.@]
1306  * Modifies the world transformation for a device context.
1307  *
1308  * PARAMS
1309  *    hdc   [I] Handle to device context
1310  *    xform [I] XFORM structure that will be used to modify the world
1311  *              transformation
1312  *    iMode [I] Specifies in what way to modify the world transformation
1313  *              Possible values:
1314  *              MWT_IDENTITY
1315  *                 Resets the world transformation to the identity matrix.
1316  *                 The parameter xform is ignored.
1317  *              MWT_LEFTMULTIPLY
1318  *                 Multiplies xform into the world transformation matrix from
1319  *                 the left.
1320  *              MWT_RIGHTMULTIPLY
1321  *                 Multiplies xform into the world transformation matrix from
1322  *                 the right.
1323  *
1324  * RETURNS
1325  *  Success: TRUE.
1326  *  Failure: FALSE. Use GetLastError() to determine the cause.
1327  */
1328 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1329     DWORD iMode )
1330 {
1331     BOOL ret = FALSE;
1332     DC *dc = get_dc_ptr( hdc );
1333
1334     /* Check for illegal parameters */
1335     if (!dc) return FALSE;
1336     if (!xform && iMode != MWT_IDENTITY) goto done;
1337
1338     /* Check that graphics mode is GM_ADVANCED */
1339     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1340
1341     if (dc->funcs->pModifyWorldTransform)
1342     {
1343         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1344         if (!ret) goto done;
1345     }
1346
1347     switch (iMode)
1348     {
1349         case MWT_IDENTITY:
1350             dc->xformWorld2Wnd.eM11 = 1.0f;
1351             dc->xformWorld2Wnd.eM12 = 0.0f;
1352             dc->xformWorld2Wnd.eM21 = 0.0f;
1353             dc->xformWorld2Wnd.eM22 = 1.0f;
1354             dc->xformWorld2Wnd.eDx  = 0.0f;
1355             dc->xformWorld2Wnd.eDy  = 0.0f;
1356             break;
1357         case MWT_LEFTMULTIPLY:
1358             CombineTransform( &dc->xformWorld2Wnd, xform,
1359                 &dc->xformWorld2Wnd );
1360             break;
1361         case MWT_RIGHTMULTIPLY:
1362             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1363                 xform );
1364             break;
1365         default:
1366             goto done;
1367     }
1368
1369     DC_UpdateXforms( dc );
1370     ret = TRUE;
1371  done:
1372     release_dc_ptr( dc );
1373     return ret;
1374 }
1375
1376
1377 /****************************************************************************
1378  * CombineTransform [GDI32.@]
1379  * Combines two transformation matrices.
1380  *
1381  * PARAMS
1382  *    xformResult [O] Stores the result of combining the two matrices
1383  *    xform1      [I] Specifies the first matrix to apply
1384  *    xform2      [I] Specifies the second matrix to apply
1385  *
1386  * REMARKS
1387  *    The same matrix can be passed in for more than one of the parameters.
1388  *
1389  * RETURNS
1390  *  Success: TRUE.
1391  *  Failure: FALSE. Use GetLastError() to determine the cause.
1392  */
1393 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1394     const XFORM *xform2 )
1395 {
1396     XFORM xformTemp;
1397
1398     /* Check for illegal parameters */
1399     if (!xformResult || !xform1 || !xform2)
1400         return FALSE;
1401
1402     /* Create the result in a temporary XFORM, since xformResult may be
1403      * equal to xform1 or xform2 */
1404     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1405                      xform1->eM12 * xform2->eM21;
1406     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1407                      xform1->eM12 * xform2->eM22;
1408     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1409                      xform1->eM22 * xform2->eM21;
1410     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1411                      xform1->eM22 * xform2->eM22;
1412     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1413                      xform1->eDy  * xform2->eM21 +
1414                      xform2->eDx;
1415     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1416                      xform1->eDy  * xform2->eM22 +
1417                      xform2->eDy;
1418
1419     /* Copy the result to xformResult */
1420     *xformResult = xformTemp;
1421
1422     return TRUE;
1423 }
1424
1425
1426 /***********************************************************************
1427  *           SetDCHook   (GDI32.@)
1428  *
1429  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1430  */
1431 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1432 {
1433     DC *dc = get_dc_ptr( hdc );
1434
1435     if (!dc) return FALSE;
1436
1437     if (!(dc->flags & DC_SAVED))
1438     {
1439         dc->dwHookData = dwHookData;
1440         dc->hookProc = hookProc;
1441     }
1442     release_dc_ptr( dc );
1443     return TRUE;
1444 }
1445
1446
1447 /***********************************************************************
1448  *           GetDCHook   (GDI32.@)
1449  *
1450  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1451  */
1452 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1453 {
1454     DC *dc = get_dc_ptr( hdc );
1455     DWORD_PTR ret;
1456
1457     if (!dc) return 0;
1458     if (proc) *proc = dc->hookProc;
1459     ret = dc->dwHookData;
1460     release_dc_ptr( dc );
1461     return ret;
1462 }
1463
1464
1465 /***********************************************************************
1466  *           SetHookFlags   (GDI32.@)
1467  *
1468  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1469  */
1470 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1471 {
1472     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1473     LONG ret = 0;
1474
1475     if (!dc) return 0;
1476
1477     /* "Undocumented Windows" info is slightly confusing. */
1478
1479     TRACE("hDC %p, flags %04x\n",hdc,flags);
1480
1481     if (flags & DCHF_INVALIDATEVISRGN)
1482         ret = InterlockedExchange( &dc->dirty, 1 );
1483     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1484         ret = InterlockedExchange( &dc->dirty, 0 );
1485
1486     GDI_ReleaseObj( hdc );
1487     return ret;
1488 }
1489
1490 /***********************************************************************
1491  *           SetICMMode    (GDI32.@)
1492  */
1493 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1494 {
1495 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1496     if (iEnableICM == ICM_OFF) return ICM_OFF;
1497     if (iEnableICM == ICM_ON) return 0;
1498     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1499     return 0;
1500 }
1501
1502 /***********************************************************************
1503  *           GetDeviceGammaRamp    (GDI32.@)
1504  */
1505 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1506 {
1507     BOOL ret = FALSE;
1508     DC *dc = get_dc_ptr( hDC );
1509
1510     if( dc )
1511     {
1512         if (dc->funcs->pGetDeviceGammaRamp)
1513             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1514         release_dc_ptr( dc );
1515     }
1516     return ret;
1517 }
1518
1519 /***********************************************************************
1520  *           SetDeviceGammaRamp    (GDI32.@)
1521  */
1522 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1523 {
1524     BOOL ret = FALSE;
1525     DC *dc = get_dc_ptr( hDC );
1526
1527     if( dc )
1528     {
1529         if (dc->funcs->pSetDeviceGammaRamp)
1530             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1531         release_dc_ptr( dc );
1532     }
1533     return ret;
1534 }
1535
1536 /***********************************************************************
1537  *           GetColorSpace    (GDI32.@)
1538  */
1539 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1540 {
1541 /*FIXME    Need to to whatever GetColorSpace actually does */
1542     return 0;
1543 }
1544
1545 /***********************************************************************
1546  *           CreateColorSpaceA    (GDI32.@)
1547  */
1548 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1549 {
1550   FIXME( "stub\n" );
1551   return 0;
1552 }
1553
1554 /***********************************************************************
1555  *           CreateColorSpaceW    (GDI32.@)
1556  */
1557 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1558 {
1559   FIXME( "stub\n" );
1560   return 0;
1561 }
1562
1563 /***********************************************************************
1564  *           DeleteColorSpace     (GDI32.@)
1565  */
1566 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1567 {
1568   FIXME( "stub\n" );
1569
1570   return TRUE;
1571 }
1572
1573 /***********************************************************************
1574  *           SetColorSpace     (GDI32.@)
1575  */
1576 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1577 {
1578   FIXME( "stub\n" );
1579
1580   return hColorSpace;
1581 }
1582
1583 /***********************************************************************
1584  *           GetBoundsRect    (GDI32.@)
1585  */
1586 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1587 {
1588     UINT ret;
1589     DC *dc = get_dc_ptr( hdc );
1590
1591     if ( !dc ) return 0;
1592
1593     if (rect)
1594     {
1595         *rect = dc->BoundsRect;
1596         ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1597     }
1598     else
1599         ret = 0;
1600
1601     if (flags & DCB_RESET)
1602     {
1603         dc->BoundsRect.left   = 0;
1604         dc->BoundsRect.top    = 0;
1605         dc->BoundsRect.right  = 0;
1606         dc->BoundsRect.bottom = 0;
1607         dc->flags &= ~DC_BOUNDS_SET;
1608     }
1609     release_dc_ptr( dc );
1610     return ret;
1611 }
1612
1613
1614 /***********************************************************************
1615  *           SetBoundsRect    (GDI32.@)
1616  */
1617 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1618 {
1619     UINT ret;
1620     DC *dc;
1621
1622     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1623     if (!(dc = get_dc_ptr( hdc ))) return 0;
1624
1625     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1626           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1627
1628     if (flags & DCB_RESET)
1629     {
1630         dc->BoundsRect.left   = 0;
1631         dc->BoundsRect.top    = 0;
1632         dc->BoundsRect.right  = 0;
1633         dc->BoundsRect.bottom = 0;
1634         dc->flags &= ~DC_BOUNDS_SET;
1635     }
1636
1637     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1638     {
1639         if (dc->flags & DC_BOUNDS_SET)
1640         {
1641             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1642             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1643             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1644             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1645         }
1646         else
1647         {
1648             dc->BoundsRect = *rect;
1649             dc->flags |= DC_BOUNDS_SET;
1650         }
1651     }
1652
1653     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1654     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1655
1656     release_dc_ptr( dc );
1657     return ret;
1658 }
1659
1660
1661 /***********************************************************************
1662  *              GetRelAbs               (GDI32.@)
1663  */
1664 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1665 {
1666     INT ret = 0;
1667     DC *dc = get_dc_ptr( hdc );
1668     if (dc)
1669     {
1670         ret = dc->relAbsMode;
1671         release_dc_ptr( dc );
1672     }
1673     return ret;
1674 }
1675
1676
1677
1678
1679 /***********************************************************************
1680  *              GetBkMode (GDI32.@)
1681  */
1682 INT WINAPI GetBkMode( HDC hdc )
1683 {
1684     INT ret = 0;
1685     DC * dc = get_dc_ptr( hdc );
1686     if (dc)
1687     {
1688         ret = dc->backgroundMode;
1689         release_dc_ptr( dc );
1690     }
1691     return ret;
1692 }
1693
1694
1695 /***********************************************************************
1696  *              SetBkMode (GDI32.@)
1697  */
1698 INT WINAPI SetBkMode( HDC hdc, INT mode )
1699 {
1700     INT ret = 0;
1701     DC *dc;
1702
1703     if ((mode <= 0) || (mode > BKMODE_LAST))
1704     {
1705         SetLastError(ERROR_INVALID_PARAMETER);
1706         return 0;
1707     }
1708     if ((dc = get_dc_ptr( hdc )))
1709     {
1710         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1711         mode = physdev->funcs->pSetBkMode( physdev, mode );
1712         if (mode)
1713         {
1714             ret = dc->backgroundMode;
1715             dc->backgroundMode = mode;
1716         }
1717         release_dc_ptr( dc );
1718     }
1719     return ret;
1720 }
1721
1722
1723 /***********************************************************************
1724  *              GetROP2 (GDI32.@)
1725  */
1726 INT WINAPI GetROP2( HDC hdc )
1727 {
1728     INT ret = 0;
1729     DC * dc = get_dc_ptr( hdc );
1730     if (dc)
1731     {
1732         ret = dc->ROPmode;
1733         release_dc_ptr( dc );
1734     }
1735     return ret;
1736 }
1737
1738
1739 /***********************************************************************
1740  *              SetROP2 (GDI32.@)
1741  */
1742 INT WINAPI SetROP2( HDC hdc, INT mode )
1743 {
1744     INT ret = 0;
1745     DC *dc;
1746
1747     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1748     {
1749         SetLastError(ERROR_INVALID_PARAMETER);
1750         return 0;
1751     }
1752     if ((dc = get_dc_ptr( hdc )))
1753     {
1754         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1755         mode = physdev->funcs->pSetROP2( physdev, mode );
1756         if (mode)
1757         {
1758             ret = dc->ROPmode;
1759             dc->ROPmode = mode;
1760         }
1761         release_dc_ptr( dc );
1762     }
1763     return ret;
1764 }
1765
1766
1767 /***********************************************************************
1768  *              SetRelAbs (GDI32.@)
1769  */
1770 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1771 {
1772     INT ret = 0;
1773     DC *dc;
1774
1775     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1776     {
1777         SetLastError(ERROR_INVALID_PARAMETER);
1778         return 0;
1779     }
1780     if ((dc = get_dc_ptr( hdc )))
1781     {
1782         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1783         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1784         if (mode)
1785         {
1786             ret = dc->relAbsMode;
1787             dc->relAbsMode = mode;
1788         }
1789         release_dc_ptr( dc );
1790     }
1791     return ret;
1792 }
1793
1794
1795 /***********************************************************************
1796  *              GetPolyFillMode (GDI32.@)
1797  */
1798 INT WINAPI GetPolyFillMode( HDC hdc )
1799 {
1800     INT ret = 0;
1801     DC * dc = get_dc_ptr( hdc );
1802     if (dc)
1803     {
1804         ret = dc->polyFillMode;
1805         release_dc_ptr( dc );
1806     }
1807     return ret;
1808 }
1809
1810
1811 /***********************************************************************
1812  *              SetPolyFillMode (GDI32.@)
1813  */
1814 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1815 {
1816     INT ret = 0;
1817     DC *dc;
1818
1819     if ((mode <= 0) || (mode > POLYFILL_LAST))
1820     {
1821         SetLastError(ERROR_INVALID_PARAMETER);
1822         return 0;
1823     }
1824     if ((dc = get_dc_ptr( hdc )))
1825     {
1826         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1827         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1828         if (mode)
1829         {
1830             ret = dc->polyFillMode;
1831             dc->polyFillMode = mode;
1832         }
1833         release_dc_ptr( dc );
1834     }
1835     return ret;
1836 }
1837
1838
1839 /***********************************************************************
1840  *              GetStretchBltMode (GDI32.@)
1841  */
1842 INT WINAPI GetStretchBltMode( HDC hdc )
1843 {
1844     INT ret = 0;
1845     DC * dc = get_dc_ptr( hdc );
1846     if (dc)
1847     {
1848         ret = dc->stretchBltMode;
1849         release_dc_ptr( dc );
1850     }
1851     return ret;
1852 }
1853
1854
1855 /***********************************************************************
1856  *              SetStretchBltMode (GDI32.@)
1857  */
1858 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1859 {
1860     INT ret = 0;
1861     DC *dc;
1862
1863     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1864     {
1865         SetLastError(ERROR_INVALID_PARAMETER);
1866         return 0;
1867     }
1868     if ((dc = get_dc_ptr( hdc )))
1869     {
1870         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1871         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1872         if (mode)
1873         {
1874             ret = dc->stretchBltMode;
1875             dc->stretchBltMode = mode;
1876         }
1877         release_dc_ptr( dc );
1878     }
1879     return ret;
1880 }
1881
1882
1883 /***********************************************************************
1884  *              GetMapMode (GDI32.@)
1885  */
1886 INT WINAPI GetMapMode( HDC hdc )
1887 {
1888     INT ret = 0;
1889     DC * dc = get_dc_ptr( hdc );
1890     if (dc)
1891     {
1892         ret = dc->MapMode;
1893         release_dc_ptr( dc );
1894     }
1895     return ret;
1896 }
1897
1898
1899 /***********************************************************************
1900  *              GetBrushOrgEx (GDI32.@)
1901  */
1902 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1903 {
1904     DC * dc = get_dc_ptr( hdc );
1905     if (!dc) return FALSE;
1906     pt->x = dc->brushOrgX;
1907     pt->y = dc->brushOrgY;
1908     release_dc_ptr( dc );
1909     return TRUE;
1910 }
1911
1912
1913 /***********************************************************************
1914  *              GetCurrentPositionEx (GDI32.@)
1915  */
1916 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1917 {
1918     DC * dc = get_dc_ptr( hdc );
1919     if (!dc) return FALSE;
1920     pt->x = dc->CursPosX;
1921     pt->y = dc->CursPosY;
1922     release_dc_ptr( dc );
1923     return TRUE;
1924 }
1925
1926
1927 /***********************************************************************
1928  *              GetViewportExtEx (GDI32.@)
1929  */
1930 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1931 {
1932     DC * dc = get_dc_ptr( hdc );
1933     if (!dc) return FALSE;
1934     size->cx = dc->vportExtX;
1935     size->cy = dc->vportExtY;
1936     release_dc_ptr( dc );
1937     return TRUE;
1938 }
1939
1940
1941 /***********************************************************************
1942  *              GetViewportOrgEx (GDI32.@)
1943  */
1944 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1945 {
1946     DC * dc = get_dc_ptr( hdc );
1947     if (!dc) return FALSE;
1948     pt->x = dc->vportOrgX;
1949     pt->y = dc->vportOrgY;
1950     release_dc_ptr( dc );
1951     return TRUE;
1952 }
1953
1954
1955 /***********************************************************************
1956  *              GetWindowExtEx (GDI32.@)
1957  */
1958 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1959 {
1960     DC * dc = get_dc_ptr( hdc );
1961     if (!dc) return FALSE;
1962     size->cx = dc->wndExtX;
1963     size->cy = dc->wndExtY;
1964     release_dc_ptr( dc );
1965     return TRUE;
1966 }
1967
1968
1969 /***********************************************************************
1970  *              GetWindowOrgEx (GDI32.@)
1971  */
1972 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1973 {
1974     DC * dc = get_dc_ptr( hdc );
1975     if (!dc) return FALSE;
1976     pt->x = dc->wndOrgX;
1977     pt->y = dc->wndOrgY;
1978     release_dc_ptr( dc );
1979     return TRUE;
1980 }
1981
1982
1983 /***********************************************************************
1984  *           GetLayout    (GDI32.@)
1985  *
1986  * Gets left->right or right->left text layout flags of a dc.
1987  *
1988  */
1989 DWORD WINAPI GetLayout(HDC hdc)
1990 {
1991     DWORD layout = GDI_ERROR;
1992
1993     DC * dc = get_dc_ptr( hdc );
1994     if (dc)
1995     {
1996         layout = dc->layout;
1997         release_dc_ptr( dc );
1998     }
1999
2000     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
2001
2002     return layout;
2003 }
2004
2005 /***********************************************************************
2006  *           SetLayout    (GDI32.@)
2007  *
2008  * Sets left->right or right->left text layout flags of a dc.
2009  *
2010  */
2011 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
2012 {
2013     DWORD oldlayout = GDI_ERROR;
2014
2015     DC * dc = get_dc_ptr( hdc );
2016     if (dc)
2017     {
2018         oldlayout = dc->layout;
2019         dc->layout = layout;
2020         if (layout != oldlayout)
2021         {
2022             if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
2023             DC_UpdateXforms( dc );
2024         }
2025         release_dc_ptr( dc );
2026     }
2027
2028     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
2029
2030     return oldlayout;
2031 }
2032
2033 /***********************************************************************
2034  *           GetDCBrushColor    (GDI32.@)
2035  */
2036 COLORREF WINAPI GetDCBrushColor(HDC hdc)
2037 {
2038     DC *dc;
2039     COLORREF dcBrushColor = CLR_INVALID;
2040
2041     TRACE("hdc(%p)\n", hdc);
2042
2043     dc = get_dc_ptr( hdc );
2044     if (dc)
2045     {
2046         dcBrushColor = dc->dcBrushColor;
2047         release_dc_ptr( dc );
2048     }
2049
2050     return dcBrushColor;
2051 }
2052
2053 /***********************************************************************
2054  *           SetDCBrushColor    (GDI32.@)
2055  */
2056 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2057 {
2058     DC *dc;
2059     COLORREF oldClr = CLR_INVALID;
2060
2061     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2062
2063     dc = get_dc_ptr( hdc );
2064     if (dc)
2065     {
2066         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
2067         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
2068         if (crColor != CLR_INVALID)
2069         {
2070             oldClr = dc->dcBrushColor;
2071             dc->dcBrushColor = crColor;
2072         }
2073         release_dc_ptr( dc );
2074     }
2075
2076     return oldClr;
2077 }
2078
2079 /***********************************************************************
2080  *           GetDCPenColor    (GDI32.@)
2081  */
2082 COLORREF WINAPI GetDCPenColor(HDC hdc)
2083 {
2084     DC *dc;
2085     COLORREF dcPenColor = CLR_INVALID;
2086
2087     TRACE("hdc(%p)\n", hdc);
2088
2089     dc = get_dc_ptr( hdc );
2090     if (dc)
2091     {
2092         dcPenColor = dc->dcPenColor;
2093         release_dc_ptr( dc );
2094     }
2095
2096     return dcPenColor;
2097 }
2098
2099 /***********************************************************************
2100  *           SetDCPenColor    (GDI32.@)
2101  */
2102 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2103 {
2104     DC *dc;
2105     COLORREF oldClr = CLR_INVALID;
2106
2107     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2108
2109     dc = get_dc_ptr( hdc );
2110     if (dc)
2111     {
2112         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
2113         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
2114         if (crColor != CLR_INVALID)
2115         {
2116             oldClr = dc->dcPenColor;
2117             dc->dcPenColor = crColor;
2118         }
2119         release_dc_ptr( dc );
2120     }
2121
2122     return oldClr;
2123 }
2124
2125 /***********************************************************************
2126  *           CancelDC    (GDI32.@)
2127  */
2128 BOOL WINAPI CancelDC(HDC hdc)
2129 {
2130     FIXME("stub\n");
2131     return TRUE;
2132 }
2133
2134 /*******************************************************************
2135  *      GetMiterLimit [GDI32.@]
2136  *
2137  *
2138  */
2139 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2140 {
2141     BOOL bRet = FALSE;
2142     DC *dc;
2143
2144     TRACE("(%p,%p)\n", hdc, peLimit);
2145
2146     dc = get_dc_ptr( hdc );
2147     if (dc)
2148     {
2149         if (peLimit)
2150             *peLimit = dc->miterLimit;
2151
2152         release_dc_ptr( dc );
2153         bRet = TRUE;
2154     }
2155     return bRet;
2156 }
2157
2158 /*******************************************************************
2159  *      SetMiterLimit [GDI32.@]
2160  *
2161  *
2162  */
2163 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2164 {
2165     BOOL bRet = FALSE;
2166     DC *dc;
2167
2168     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2169
2170     dc = get_dc_ptr( hdc );
2171     if (dc)
2172     {
2173         if (peOldLimit)
2174             *peOldLimit = dc->miterLimit;
2175         dc->miterLimit = eNewLimit;
2176         release_dc_ptr( dc );
2177         bRet = TRUE;
2178     }
2179     return bRet;
2180 }
2181
2182 /*******************************************************************
2183  *      GdiIsMetaPrintDC [GDI32.@]
2184  */
2185 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2186 {
2187     FIXME("%p\n", hdc);
2188     return FALSE;
2189 }
2190
2191 /*******************************************************************
2192  *      GdiIsMetaFileDC [GDI32.@]
2193  */
2194 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2195 {
2196     TRACE("%p\n", hdc);
2197
2198     switch( GetObjectType( hdc ) )
2199     {
2200     case OBJ_METADC:
2201     case OBJ_ENHMETADC:
2202         return TRUE;
2203     }
2204     return FALSE;
2205 }
2206
2207 /*******************************************************************
2208  *      GdiIsPlayMetafileDC [GDI32.@]
2209  */
2210 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2211 {
2212     FIXME("%p\n", hdc);
2213     return FALSE;
2214 }