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