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     WORD type;
  56     DC *dc = get_any_obj_ptr( hdc, &type );
  57     if (!dc) return NULL;
  58
  59     switch (type)
  60     {
  61     case OBJ_DC:
  62     case OBJ_MEMDC:
  63     case OBJ_METADC:
  64     case OBJ_ENHMETADC:
  65         return dc;
  66     default:
  67         GDI_ReleaseObj( hdc );
  68         SetLastError( ERROR_INVALID_HANDLE );
  69         return NULL;
  70     }
  71 }
  72
  73
  74 /***********************************************************************
  75  *           set_initial_dc_state
  76  */
  77 static void set_initial_dc_state( DC *dc )
  78 {
  79     dc->wnd_org.x           = 0;
  80     dc->wnd_org.y           = 0;
  81     dc->wnd_ext.cx          = 1;
  82     dc->wnd_ext.cy          = 1;
  83     dc->vport_org.x         = 0;
  84     dc->vport_org.y         = 0;
  85     dc->vport_ext.cx        = 1;
  86     dc->vport_ext.cy        = 1;
  87     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  88     dc->layout              = 0;
  89     dc->font_code_page      = CP_ACP;
  90     dc->ROPmode             = R2_COPYPEN;
  91     dc->polyFillMode        = ALTERNATE;
  92     dc->stretchBltMode      = BLACKONWHITE;
  93     dc->relAbsMode          = ABSOLUTE;
  94     dc->backgroundMode      = OPAQUE;
  95     dc->backgroundColor     = RGB( 255, 255, 255 );
  96     dc->dcBrushColor        = RGB( 255, 255, 255 );
  97     dc->dcPenColor          = RGB( 0, 0, 0 );
  98     dc->textColor           = RGB( 0, 0, 0 );
  99     dc->brush_org.x         = 0;
 100     dc->brush_org.y         = 0;
 101     dc->mapperFlags         = 0;
 102     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 103     dc->charExtra           = 0;
 104     dc->breakExtra          = 0;
 105     dc->breakRem            = 0;
 106     dc->MapMode             = MM_TEXT;
 107     dc->GraphicsMode        = GM_COMPATIBLE;
 108     dc->cur_pos.x           = 0;
 109     dc->cur_pos.y           = 0;
 110     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 111     dc->xformWorld2Wnd.eM11 = 1.0f;
 112     dc->xformWorld2Wnd.eM12 = 0.0f;
 113     dc->xformWorld2Wnd.eM21 = 0.0f;
 114     dc->xformWorld2Wnd.eM22 = 1.0f;
 115     dc->xformWorld2Wnd.eDx  = 0.0f;
 116     dc->xformWorld2Wnd.eDy  = 0.0f;
 117     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 118     dc->xformVport2World    = dc->xformWorld2Wnd;
 119     dc->vport2WorldValid    = TRUE;
 120
 121     reset_bounds( &dc->bounds );
 122 }
 123
 124 /***********************************************************************
 125  *           alloc_dc_ptr
 126  */
 127 DC *alloc_dc_ptr( WORD magic )
 128 {
 129     DC *dc;
 130
 131     if (!(dc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*dc) ))) return NULL;
 132
 133     dc->nulldrv.funcs       = &null_driver;
 134     dc->physDev             = &dc->nulldrv;
 135     dc->thread              = GetCurrentThreadId();
 136     dc->refcount            = 1;
 137     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 138     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 139     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 140     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 141
 142     set_initial_dc_state( dc );
 143
 144     if (!(dc->hSelf = alloc_gdi_handle( dc, magic, &dc_funcs )))
 145     {
 146         HeapFree( GetProcessHeap(), 0, dc );
 147         return NULL;
 148     }
 149     dc->nulldrv.hdc = dc->hSelf;
 150
 151     if (font_driver && !font_driver->pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 152     {
 153         free_dc_ptr( dc );
 154         return NULL;
 155     }
 156     return dc;
 157 }
 158
 159
 160
 161 /***********************************************************************
 162  *           free_dc_state
 163  */
 164 static void free_dc_state( DC *dc )
 165 {
 166     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 167     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 168     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 169     if (dc->region) DeleteObject( dc->region );
 170     if (dc->path) free_gdi_path( dc->path );
 171     HeapFree( GetProcessHeap(), 0, dc );
 172 }
 173
 174
 175 /***********************************************************************
 176  *           free_dc_ptr
 177  */
 178 void free_dc_ptr( DC *dc )
 179 {
 180     assert( dc->refcount == 1 );
 181
 182     while (dc->physDev != &dc->nulldrv)
 183     {
 184         PHYSDEV physdev = dc->physDev;
 185         dc->physDev = physdev->next;
 186         physdev->funcs->pDeleteDC( physdev );
 187     }
 188     GDI_dec_ref_count( dc->hPen );
 189     GDI_dec_ref_count( dc->hBrush );
 190     GDI_dec_ref_count( dc->hFont );
 191     if (dc->hBitmap) GDI_dec_ref_count( dc->hBitmap );
 192     free_gdi_handle( dc->hSelf );
 193     free_dc_state( dc );
 194 }
 195
 196
 197 /***********************************************************************
 198  *           get_dc_ptr
 199  *
 200  * Retrieve a DC pointer but release the GDI lock.
 201  */
 202 DC *get_dc_ptr( HDC hdc )
 203 {
 204     DC *dc = get_dc_obj( hdc );
 205     if (!dc) return NULL;
 206
 207     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 208     {
 209         dc->thread = GetCurrentThreadId();
 210     }
 211     else if (dc->thread != GetCurrentThreadId())
 212     {
 213         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 214         GDI_ReleaseObj( hdc );
 215         return NULL;
 216     }
 217     else InterlockedIncrement( &dc->refcount );
 218
 219     GDI_ReleaseObj( hdc );
 220     return dc;
 221 }
 222
 223
 224 /***********************************************************************
 225  *           release_dc_ptr
 226  */
 227 void release_dc_ptr( DC *dc )
 228 {
 229     LONG ref;
 230
 231     dc->thread = 0;
 232     ref = InterlockedDecrement( &dc->refcount );
 233     assert( ref >= 0 );
 234     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 235 }
 236
 237
 238 /***********************************************************************
 239  *           update_dc
 240  *
 241  * Make sure the DC vis region is up to date.
 242  * This function may call up to USER so the GDI lock should _not_
 243  * be held when calling it.
 244  */
 245 void update_dc( DC *dc )
 246 {
 247     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 248         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 249 }
 250
 251
 252 /***********************************************************************
 253  *           DC_DeleteObject
 254  */
 255 static BOOL DC_DeleteObject( HGDIOBJ handle )
 256 {
 257     return DeleteDC( handle );
 258 }
 259
 260
 261 /***********************************************************************
 262  *           DC_InitDC
 263  *
 264  * Setup device-specific DC values for a newly created DC.
 265  */
 266 void DC_InitDC( DC* dc )
 267 {
 268     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 269     physdev->funcs->pRealizeDefaultPalette( physdev );
 270     SetTextColor( dc->hSelf, dc->textColor );
 271     SetBkColor( dc->hSelf, dc->backgroundColor );
 272     SelectObject( dc->hSelf, dc->hPen );
 273     SelectObject( dc->hSelf, dc->hBrush );
 274     SelectObject( dc->hSelf, dc->hFont );
 275     update_dc_clipping( dc );
 276     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 277     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
 278     physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE );
 279 }
 280
 281
 282 /***********************************************************************
 283  *           DC_InvertXform
 284  *
 285  * Computes the inverse of the transformation xformSrc and stores it to
 286  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 287  * is singular.
 288  */
 289 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 290 {
 291     double determinant;
 292
 293     determinant = xformSrc->eM11*xformSrc->eM22 -
 294         xformSrc->eM12*xformSrc->eM21;
 295     if (determinant > -1e-12 && determinant < 1e-12)
 296         return FALSE;
 297
 298     xformDest->eM11 =  xformSrc->eM22 / determinant;
 299     xformDest->eM12 = -xformSrc->eM12 / determinant;
 300     xformDest->eM21 = -xformSrc->eM21 / determinant;
 301     xformDest->eM22 =  xformSrc->eM11 / determinant;
 302     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 303                        xformSrc->eDy * xformDest->eM21;
 304     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 305                        xformSrc->eDy * xformDest->eM22;
 306
 307     return TRUE;
 308 }
 309
 310 /* Construct a transformation to do the window-to-viewport conversion */
 311 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 312 {
 313     double scaleX, scaleY;
 314     scaleX = (double)dc->vport_ext.cx / (double)dc->wnd_ext.cx;
 315     scaleY = (double)dc->vport_ext.cy / (double)dc->wnd_ext.cy;
 316
 317     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 318     xform->eM11 = scaleX;
 319     xform->eM12 = 0.0;
 320     xform->eM21 = 0.0;
 321     xform->eM22 = scaleY;
 322     xform->eDx  = (double)dc->vport_org.x - scaleX * (double)dc->wnd_org.x;
 323     xform->eDy  = (double)dc->vport_org.y - scaleY * (double)dc->wnd_org.y;
 324     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 325 }
 326
 327 /***********************************************************************
 328  *           DC_UpdateXforms
 329  *
 330  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 331  * fields of the specified DC by creating a transformation that
 332  * represents the current mapping mode and combining it with the DC's
 333  * world transform. This function should be called whenever the
 334  * parameters associated with the mapping mode (window and viewport
 335  * extents and origins) or the world transform change.
 336  */
 337 void DC_UpdateXforms( DC *dc )
 338 {
 339     XFORM xformWnd2Vport, oldworld2vport;
 340
 341     construct_window_to_viewport(dc, &xformWnd2Vport);
 342
 343     oldworld2vport = dc->xformWorld2Vport;
 344     /* Combine with the world transformation */
 345     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 346         &xformWnd2Vport );
 347
 348     /* Create inverse of world-to-viewport transformation */
 349     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 350         &dc->xformVport2World );
 351
 352     /* Reselect the font and pen back into the dc so that the size
 353        gets updated. */
 354     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 355         !GdiIsMetaFileDC(dc->hSelf))
 356     {
 357         SelectObject(dc->hSelf, dc->hFont);
 358         SelectObject(dc->hSelf, dc->hPen);
 359     }
 360 }
 361
 362
 363 /***********************************************************************
 364  *           nulldrv_SaveDC
 365  */
 366 INT nulldrv_SaveDC( PHYSDEV dev )
 367 {
 368     DC *newdc, *dc = get_nulldrv_dc( dev );
 369
 370     if (!(newdc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*newdc )))) return 0;
 371     newdc->layout           = dc->layout;
 372     newdc->hPen             = dc->hPen;
 373     newdc->hBrush           = dc->hBrush;
 374     newdc->hFont            = dc->hFont;
 375     newdc->hBitmap          = dc->hBitmap;
 376     newdc->hPalette         = dc->hPalette;
 377     newdc->ROPmode          = dc->ROPmode;
 378     newdc->polyFillMode     = dc->polyFillMode;
 379     newdc->stretchBltMode   = dc->stretchBltMode;
 380     newdc->relAbsMode       = dc->relAbsMode;
 381     newdc->backgroundMode   = dc->backgroundMode;
 382     newdc->backgroundColor  = dc->backgroundColor;
 383     newdc->textColor        = dc->textColor;
 384     newdc->dcBrushColor     = dc->dcBrushColor;
 385     newdc->dcPenColor       = dc->dcPenColor;
 386     newdc->brush_org        = dc->brush_org;
 387     newdc->mapperFlags      = dc->mapperFlags;
 388     newdc->textAlign        = dc->textAlign;
 389     newdc->charExtra        = dc->charExtra;
 390     newdc->breakExtra       = dc->breakExtra;
 391     newdc->breakRem         = dc->breakRem;
 392     newdc->MapMode          = dc->MapMode;
 393     newdc->GraphicsMode     = dc->GraphicsMode;
 394     newdc->cur_pos          = dc->cur_pos;
 395     newdc->ArcDirection     = dc->ArcDirection;
 396     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 397     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 398     newdc->xformVport2World = dc->xformVport2World;
 399     newdc->vport2WorldValid = dc->vport2WorldValid;
 400     newdc->wnd_org          = dc->wnd_org;
 401     newdc->wnd_ext          = dc->wnd_ext;
 402     newdc->vport_org        = dc->vport_org;
 403     newdc->vport_ext        = dc->vport_ext;
 404     newdc->virtual_res      = dc->virtual_res;
 405     newdc->virtual_size     = dc->virtual_size;
 406
 407     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 408
 409     if (dc->hClipRgn)
 410     {
 411         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 412         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 413     }
 414     if (dc->hMetaRgn)
 415     {
 416         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 417         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 418     }
 419
 420     if (!PATH_SavePath( newdc, dc ))
 421     {
 422         release_dc_ptr( dc );
 423         free_dc_state( newdc );
 424         return 0;
 425     }
 426
 427     newdc->saved_dc = dc->saved_dc;
 428     dc->saved_dc = newdc;
 429     return ++dc->saveLevel;
 430 }
 431
 432
 433 /***********************************************************************
 434  *           nulldrv_RestoreDC
 435  */
 436 BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 437 {
 438     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 439     INT save_level;
 440
 441     /* find the state level to restore */
 442
 443     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 444     if (level < 0) level = dc->saveLevel + level + 1;
 445     first_dcs = dc->saved_dc;
 446     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 447         dcs = dcs->saved_dc;
 448
 449     /* restore the state */
 450
 451     if (!PATH_RestorePath( dc, dcs )) return FALSE;
 452
 453     dc->layout           = dcs->layout;
 454     dc->ROPmode          = dcs->ROPmode;
 455     dc->polyFillMode     = dcs->polyFillMode;
 456     dc->stretchBltMode   = dcs->stretchBltMode;
 457     dc->relAbsMode       = dcs->relAbsMode;
 458     dc->backgroundMode   = dcs->backgroundMode;
 459     dc->backgroundColor  = dcs->backgroundColor;
 460     dc->textColor        = dcs->textColor;
 461     dc->dcBrushColor     = dcs->dcBrushColor;
 462     dc->dcPenColor       = dcs->dcPenColor;
 463     dc->brush_org        = dcs->brush_org;
 464     dc->mapperFlags      = dcs->mapperFlags;
 465     dc->textAlign        = dcs->textAlign;
 466     dc->charExtra        = dcs->charExtra;
 467     dc->breakExtra       = dcs->breakExtra;
 468     dc->breakRem         = dcs->breakRem;
 469     dc->MapMode          = dcs->MapMode;
 470     dc->GraphicsMode     = dcs->GraphicsMode;
 471     dc->cur_pos          = dcs->cur_pos;
 472     dc->ArcDirection     = dcs->ArcDirection;
 473     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 474     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 475     dc->xformVport2World = dcs->xformVport2World;
 476     dc->vport2WorldValid = dcs->vport2WorldValid;
 477     dc->wnd_org          = dcs->wnd_org;
 478     dc->wnd_ext          = dcs->wnd_ext;
 479     dc->vport_org        = dcs->vport_org;
 480     dc->vport_ext        = dcs->vport_ext;
 481     dc->virtual_res      = dcs->virtual_res;
 482     dc->virtual_size     = dcs->virtual_size;
 483
 484     if (dcs->hClipRgn)
 485     {
 486         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 487         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 488     }
 489     else
 490     {
 491         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 492         dc->hClipRgn = 0;
 493     }
 494     if (dcs->hMetaRgn)
 495     {
 496         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 497         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 498     }
 499     else
 500     {
 501         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 502         dc->hMetaRgn = 0;
 503     }
 504     DC_UpdateXforms( dc );
 505     update_dc_clipping( dc );
 506
 507     SelectObject( dev->hdc, dcs->hBitmap );
 508     SelectObject( dev->hdc, dcs->hBrush );
 509     SelectObject( dev->hdc, dcs->hFont );
 510     SelectObject( dev->hdc, dcs->hPen );
 511     SetBkColor( dev->hdc, dcs->backgroundColor);
 512     SetTextColor( dev->hdc, dcs->textColor);
 513     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 514
 515     dc->saved_dc  = dcs->saved_dc;
 516     dcs->saved_dc = 0;
 517     dc->saveLevel = save_level - 1;
 518
 519     /* now destroy all the saved DCs */
 520
 521     while (first_dcs)
 522     {
 523         DC *next = first_dcs->saved_dc;
 524         free_dc_state( first_dcs );
 525         first_dcs = next;
 526     }
 527     return TRUE;
 528 }
 529
 530
 531 /***********************************************************************
 532  *           reset_dc_state
 533  */
 534 static BOOL reset_dc_state( HDC hdc )
 535 {
 536     DC *dc, *dcs, *next;
 537
 538     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 539
 540     set_initial_dc_state( dc );
 541     SetBkColor( hdc, RGB( 255, 255, 255 ));
 542     SetTextColor( hdc, RGB( 0, 0, 0 ));
 543     SelectObject( hdc, GetStockObject( WHITE_BRUSH ));
 544     SelectObject( hdc, GetStockObject( SYSTEM_FONT ));
 545     SelectObject( hdc, GetStockObject( BLACK_PEN ));
 546     SetVirtualResolution( hdc, 0, 0, 0, 0 );
 547     GDISelectPalette( hdc, GetStockObject( DEFAULT_PALETTE ), FALSE );
 548     SetBoundsRect( hdc, NULL, DCB_DISABLE );
 549     AbortPath( hdc );
 550
 551     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 552     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 553     dc->hClipRgn = 0;
 554     dc->hMetaRgn = 0;
 555     update_dc_clipping( dc );
 556
 557     for (dcs = dc->saved_dc; dcs; dcs = next)
 558     {
 559         next = dcs->saved_dc;
 560         free_dc_state( dcs );
 561     }
 562     dc->saved_dc = NULL;
 563     dc->saveLevel = 0;
 564     release_dc_ptr( dc );
 565     return TRUE;
 566 }
 567
 568
 569 /***********************************************************************
 570  *           SaveDC    (GDI32.@)
 571  */
 572 INT WINAPI SaveDC( HDC hdc )
 573 {
 574     DC * dc;
 575     INT ret = 0;
 576
 577     if ((dc = get_dc_ptr( hdc )))
 578     {
 579         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 580         ret = physdev->funcs->pSaveDC( physdev );
 581         release_dc_ptr( dc );
 582     }
 583     return ret;
 584 }
 585
 586
 587 /***********************************************************************
 588  *           RestoreDC    (GDI32.@)
 589  */
 590 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 591 {
 592     PHYSDEV physdev;
 593     DC *dc;
 594     BOOL success = FALSE;
 595
 596     TRACE("%p %d\n", hdc, level );
 597     if ((dc = get_dc_ptr( hdc )))
 598     {
 599         update_dc( dc );
 600         physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 601         success = physdev->funcs->pRestoreDC( physdev, level );
 602         release_dc_ptr( dc );
 603     }
 604     return success;
 605 }
 606
 607
 608 /***********************************************************************
 609  *           CreateDCW    (GDI32.@)
 610  */
 611 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 612                       const DEVMODEW *initData )
 613 {
 614     HDC hdc;
 615     DC * dc;
 616     const struct gdi_dc_funcs *funcs;
 617     WCHAR buf[300];
 618
 619     GDI_CheckNotLock();
 620
 621     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 622     {
 623         if (!driver)
 624         {
 625             ERR( "no device found for %s\n", debugstr_w(device) );
 626             return 0;
 627         }
 628         strcpyW(buf, driver);
 629     }
 630
 631     if (!(funcs = DRIVER_load_driver( buf )))
 632     {
 633         ERR( "no driver found for %s\n", debugstr_w(buf) );
 634         return 0;
 635     }
 636     if (!(dc = alloc_dc_ptr( OBJ_DC ))) return 0;
 637     hdc = dc->hSelf;
 638
 639     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 640
 641     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 642           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 643
 644     if (funcs->pCreateDC)
 645     {
 646         if (!funcs->pCreateDC( &dc->physDev, buf, device, output, initData ))
 647         {
 648             WARN("creation aborted by device\n" );
 649             free_dc_ptr( dc );
 650             return 0;
 651         }
 652     }
 653
 654     dc->vis_rect.left   = 0;
 655     dc->vis_rect.top    = 0;
 656     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 657     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 658
 659     DC_InitDC( dc );
 660     release_dc_ptr( dc );
 661     return hdc;
 662 }
 663
 664
 665 /***********************************************************************
 666  *           CreateDCA    (GDI32.@)
 667  */
 668 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 669                       const DEVMODEA *initData )
 670 {
 671     UNICODE_STRING driverW, deviceW, outputW;
 672     DEVMODEW *initDataW;
 673     HDC ret;
 674
 675     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 676     else driverW.Buffer = NULL;
 677
 678     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 679     else deviceW.Buffer = NULL;
 680
 681     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 682     else outputW.Buffer = NULL;
 683
 684     initDataW = NULL;
 685     if (initData)
 686     {
 687         /* don't convert initData for DISPLAY driver, it's not used */
 688         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 689             initDataW = GdiConvertToDevmodeW(initData);
 690     }
 691
 692     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 693
 694     RtlFreeUnicodeString(&driverW);
 695     RtlFreeUnicodeString(&deviceW);
 696     RtlFreeUnicodeString(&outputW);
 697     HeapFree(GetProcessHeap(), 0, initDataW);
 698     return ret;
 699 }
 700
 701
 702 /***********************************************************************
 703  *           CreateICA    (GDI32.@)
 704  */
 705 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 706                           const DEVMODEA* initData )
 707 {
 708       /* Nothing special yet for ICs */
 709     return CreateDCA( driver, device, output, initData );
 710 }
 711
 712
 713 /***********************************************************************
 714  *           CreateICW    (GDI32.@)
 715  */
 716 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 717                           const DEVMODEW* initData )
 718 {
 719       /* Nothing special yet for ICs */
 720     return CreateDCW( driver, device, output, initData );
 721 }
 722
 723
 724 /***********************************************************************
 725  *           CreateCompatibleDC   (GDI32.@)
 726  */
 727 HDC WINAPI CreateCompatibleDC( HDC hdc )
 728 {
 729     DC *dc, *origDC;
 730     HDC ret;
 731     const struct gdi_dc_funcs *funcs;
 732     PHYSDEV physDev = NULL;
 733
 734     GDI_CheckNotLock();
 735
 736     if (hdc)
 737     {
 738         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 739         physDev = GET_DC_PHYSDEV( origDC, pCreateCompatibleDC );
 740         funcs = physDev->funcs;
 741         release_dc_ptr( origDC );
 742     }
 743     else funcs = DRIVER_load_driver( displayW );
 744
 745     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) return 0;
 746
 747     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 748
 749     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 750     dc->vis_rect.left   = 0;
 751     dc->vis_rect.top    = 0;
 752     dc->vis_rect.right  = 1;
 753     dc->vis_rect.bottom = 1;
 754     dc->device_rect = dc->vis_rect;
 755
 756     ret = dc->hSelf;
 757
 758     if (funcs->pCreateCompatibleDC && !funcs->pCreateCompatibleDC( physDev, &dc->physDev ))
 759     {
 760         WARN("creation aborted by device\n");
 761         free_dc_ptr( dc );
 762         return 0;
 763     }
 764
 765     if (!dib_driver.pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 766     {
 767         free_dc_ptr( dc );
 768         return 0;
 769     }
 770     physDev = GET_DC_PHYSDEV( dc, pSelectBitmap );
 771     physDev->funcs->pSelectBitmap( physDev, dc->hBitmap );
 772
 773     DC_InitDC( dc );
 774     release_dc_ptr( dc );
 775     return ret;
 776 }
 777
 778
 779 /***********************************************************************
 780  *           DeleteDC    (GDI32.@)
 781  */
 782 BOOL WINAPI DeleteDC( HDC hdc )
 783 {
 784     DC * dc;
 785
 786     TRACE("%p\n", hdc );
 787
 788     GDI_CheckNotLock();
 789
 790     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 791     if (dc->refcount != 1)
 792     {
 793         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 794         release_dc_ptr( dc );
 795         return FALSE;
 796     }
 797
 798     /* Call hook procedure to check whether is it OK to delete this DC */
 799     if (dc->hookProc && !dc->hookProc( dc->hSelf, DCHC_DELETEDC, dc->dwHookData, 0 ))
 800     {
 801         release_dc_ptr( dc );
 802         return TRUE;
 803     }
 804     reset_dc_state( hdc );
 805     free_dc_ptr( dc );
 806     return TRUE;
 807 }
 808
 809
 810 /***********************************************************************
 811  *           ResetDCW    (GDI32.@)
 812  */
 813 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 814 {
 815     DC *dc;
 816     HDC ret = 0;
 817
 818     if ((dc = get_dc_ptr( hdc )))
 819     {
 820         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 821         ret = physdev->funcs->pResetDC( physdev, devmode );
 822         if (ret)  /* reset the visible region */
 823         {
 824             dc->dirty = 0;
 825             dc->vis_rect.left   = 0;
 826             dc->vis_rect.top    = 0;
 827             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 828             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 829             if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 830             dc->hVisRgn = 0;
 831             update_dc_clipping( dc );
 832         }
 833         release_dc_ptr( dc );
 834     }
 835     return ret;
 836 }
 837
 838
 839 /***********************************************************************
 840  *           ResetDCA    (GDI32.@)
 841  */
 842 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 843 {
 844     DEVMODEW *devmodeW;
 845     HDC ret;
 846
 847     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 848     else devmodeW = NULL;
 849
 850     ret = ResetDCW(hdc, devmodeW);
 851
 852     HeapFree(GetProcessHeap(), 0, devmodeW);
 853     return ret;
 854 }
 855
 856
 857 /***********************************************************************
 858  *           GetDeviceCaps    (GDI32.@)
 859  */
 860 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 861 {
 862     DC *dc;
 863     INT ret = 0;
 864
 865     if ((dc = get_dc_ptr( hdc )))
 866     {
 867         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 868         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 869         release_dc_ptr( dc );
 870     }
 871     return ret;
 872 }
 873
 874
 875 /***********************************************************************
 876  *              GetBkColor (GDI32.@)
 877  */
 878 COLORREF WINAPI GetBkColor( HDC hdc )
 879 {
 880     COLORREF ret = 0;
 881     DC * dc = get_dc_ptr( hdc );
 882     if (dc)
 883     {
 884         ret = dc->backgroundColor;
 885         release_dc_ptr( dc );
 886     }
 887     return ret;
 888 }
 889
 890
 891 /***********************************************************************
 892  *           SetBkColor    (GDI32.@)
 893  */
 894 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 895 {
 896     COLORREF ret = CLR_INVALID;
 897     DC * dc = get_dc_ptr( hdc );
 898
 899     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 900
 901     if (dc)
 902     {
 903         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 904         ret = dc->backgroundColor;
 905         dc->backgroundColor = physdev->funcs->pSetBkColor( physdev, color );
 906         release_dc_ptr( dc );
 907     }
 908     return ret;
 909 }
 910
 911
 912 /***********************************************************************
 913  *              GetTextColor (GDI32.@)
 914  */
 915 COLORREF WINAPI GetTextColor( HDC hdc )
 916 {
 917     COLORREF ret = 0;
 918     DC * dc = get_dc_ptr( hdc );
 919     if (dc)
 920     {
 921         ret = dc->textColor;
 922         release_dc_ptr( dc );
 923     }
 924     return ret;
 925 }
 926
 927
 928 /***********************************************************************
 929  *           SetTextColor    (GDI32.@)
 930  */
 931 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 932 {
 933     COLORREF ret = CLR_INVALID;
 934     DC * dc = get_dc_ptr( hdc );
 935
 936     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 937
 938     if (dc)
 939     {
 940         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 941         ret = dc->textColor;
 942         dc->textColor = physdev->funcs->pSetTextColor( physdev, color );
 943         release_dc_ptr( dc );
 944     }
 945     return ret;
 946 }
 947
 948
 949 /***********************************************************************
 950  *              GetTextAlign (GDI32.@)
 951  */
 952 UINT WINAPI GetTextAlign( HDC hdc )
 953 {
 954     UINT ret = 0;
 955     DC * dc = get_dc_ptr( hdc );
 956     if (dc)
 957     {
 958         ret = dc->textAlign;
 959         release_dc_ptr( dc );
 960     }
 961     return ret;
 962 }
 963
 964
 965 /***********************************************************************
 966  *           SetTextAlign    (GDI32.@)
 967  */
 968 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 969 {
 970     UINT ret = GDI_ERROR;
 971     DC *dc = get_dc_ptr( hdc );
 972
 973     TRACE("hdc=%p align=%d\n", hdc, align);
 974
 975     if (dc)
 976     {
 977         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
 978         align = physdev->funcs->pSetTextAlign( physdev, align );
 979         if (align != GDI_ERROR)
 980         {
 981             ret = dc->textAlign;
 982             dc->textAlign = align;
 983         }
 984         release_dc_ptr( dc );
 985     }
 986     return ret;
 987 }
 988
 989 /***********************************************************************
 990  *           GetDCOrgEx  (GDI32.@)
 991  */
 992 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
 993 {
 994     DC * dc;
 995
 996     if (!lpp) return FALSE;
 997     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
 998     lpp->x = dc->vis_rect.left;
 999     lpp->y = dc->vis_rect.top;
1000     release_dc_ptr( dc );
1001     return TRUE;
1002 }
1003
1004
1005 /***********************************************************************
1006  *              GetGraphicsMode (GDI32.@)
1007  */
1008 INT WINAPI GetGraphicsMode( HDC hdc )
1009 {
1010     INT ret = 0;
1011     DC * dc = get_dc_ptr( hdc );
1012     if (dc)
1013     {
1014         ret = dc->GraphicsMode;
1015         release_dc_ptr( dc );
1016     }
1017     return ret;
1018 }
1019
1020
1021 /***********************************************************************
1022  *           SetGraphicsMode    (GDI32.@)
1023  */
1024 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1025 {
1026     INT ret = 0;
1027     DC *dc = get_dc_ptr( hdc );
1028
1029     /* One would think that setting the graphics mode to GM_COMPATIBLE
1030      * would also reset the world transformation matrix to the unity
1031      * matrix. However, in Windows, this is not the case. This doesn't
1032      * make a lot of sense to me, but that's the way it is.
1033      */
1034     if (!dc) return 0;
1035     if ((mode > 0) && (mode <= GM_LAST))
1036     {
1037         ret = dc->GraphicsMode;
1038         dc->GraphicsMode = mode;
1039     }
1040     /* font metrics depend on the graphics mode */
1041     if (ret != mode) SelectObject(dc->hSelf, dc->hFont);
1042     release_dc_ptr( dc );
1043     return ret;
1044 }
1045
1046
1047 /***********************************************************************
1048  *              GetArcDirection (GDI32.@)
1049  */
1050 INT WINAPI GetArcDirection( HDC hdc )
1051 {
1052     INT ret = 0;
1053     DC * dc = get_dc_ptr( hdc );
1054     if (dc)
1055     {
1056         ret = dc->ArcDirection;
1057         release_dc_ptr( dc );
1058     }
1059     return ret;
1060 }
1061
1062
1063 /***********************************************************************
1064  *           SetArcDirection    (GDI32.@)
1065  */
1066 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1067 {
1068     DC * dc;
1069     INT ret = 0;
1070
1071     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1072     {
1073         SetLastError(ERROR_INVALID_PARAMETER);
1074         return 0;
1075     }
1076
1077     if ((dc = get_dc_ptr( hdc )))
1078     {
1079         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1080         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1081         if (dir)
1082         {
1083             ret = dc->ArcDirection;
1084             dc->ArcDirection = dir;
1085         }
1086         release_dc_ptr( dc );
1087     }
1088     return ret;
1089 }
1090
1091
1092 /***********************************************************************
1093  *           GetWorldTransform    (GDI32.@)
1094  */
1095 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1096 {
1097     DC * dc;
1098     if (!xform) return FALSE;
1099     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1100     *xform = dc->xformWorld2Wnd;
1101     release_dc_ptr( dc );
1102     return TRUE;
1103 }
1104
1105
1106 /***********************************************************************
1107  *           GetTransform    (GDI32.@)
1108  *
1109  * Undocumented
1110  *
1111  * Returns one of the co-ordinate space transforms
1112  *
1113  * PARAMS
1114  *    hdc   [I] Device context.
1115  *    which [I] Which xform to return:
1116  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1117  *                  0x304 Page -> Device transform (the mapping mode transform).
1118  *                  0x204 World -> Device transform (the combination of the above two).
1119  *                  0x402 Device -> World transform (the inversion of the above).
1120  *    xform [O] The xform.
1121  *
1122  */
1123 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1124 {
1125     BOOL ret = TRUE;
1126     DC *dc = get_dc_ptr( hdc );
1127     if (!dc) return FALSE;
1128
1129     switch(which)
1130     {
1131     case 0x203:
1132         *xform = dc->xformWorld2Wnd;
1133         break;
1134
1135     case 0x304:
1136         construct_window_to_viewport(dc, xform);
1137         break;
1138
1139     case 0x204:
1140         *xform = dc->xformWorld2Vport;
1141         break;
1142
1143     case 0x402:
1144         *xform = dc->xformVport2World;
1145         break;
1146
1147     default:
1148         FIXME("Unknown code %x\n", which);
1149         ret = FALSE;
1150     }
1151
1152     release_dc_ptr( dc );
1153     return ret;
1154 }
1155
1156
1157 /****************************************************************************
1158  * CombineTransform [GDI32.@]
1159  * Combines two transformation matrices.
1160  *
1161  * PARAMS
1162  *    xformResult [O] Stores the result of combining the two matrices
1163  *    xform1      [I] Specifies the first matrix to apply
1164  *    xform2      [I] Specifies the second matrix to apply
1165  *
1166  * REMARKS
1167  *    The same matrix can be passed in for more than one of the parameters.
1168  *
1169  * RETURNS
1170  *  Success: TRUE.
1171  *  Failure: FALSE. Use GetLastError() to determine the cause.
1172  */
1173 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1174     const XFORM *xform2 )
1175 {
1176     XFORM xformTemp;
1177
1178     /* Check for illegal parameters */
1179     if (!xformResult || !xform1 || !xform2)
1180         return FALSE;
1181
1182     /* Create the result in a temporary XFORM, since xformResult may be
1183      * equal to xform1 or xform2 */
1184     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1185                      xform1->eM12 * xform2->eM21;
1186     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1187                      xform1->eM12 * xform2->eM22;
1188     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1189                      xform1->eM22 * xform2->eM21;
1190     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1191                      xform1->eM22 * xform2->eM22;
1192     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1193                      xform1->eDy  * xform2->eM21 +
1194                      xform2->eDx;
1195     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1196                      xform1->eDy  * xform2->eM22 +
1197                      xform2->eDy;
1198
1199     /* Copy the result to xformResult */
1200     *xformResult = xformTemp;
1201
1202     return TRUE;
1203 }
1204
1205
1206 /***********************************************************************
1207  *           SetDCHook   (GDI32.@)
1208  *
1209  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1210  */
1211 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1212 {
1213     DC *dc = get_dc_ptr( hdc );
1214
1215     if (!dc) return FALSE;
1216
1217     dc->dwHookData = dwHookData;
1218     dc->hookProc = hookProc;
1219     release_dc_ptr( dc );
1220     return TRUE;
1221 }
1222
1223
1224 /***********************************************************************
1225  *           GetDCHook   (GDI32.@)
1226  *
1227  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1228  */
1229 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1230 {
1231     DC *dc = get_dc_ptr( hdc );
1232     DWORD_PTR ret;
1233
1234     if (!dc) return 0;
1235     if (proc) *proc = dc->hookProc;
1236     ret = dc->dwHookData;
1237     release_dc_ptr( dc );
1238     return ret;
1239 }
1240
1241
1242 /***********************************************************************
1243  *           SetHookFlags   (GDI32.@)
1244  *
1245  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1246  */
1247 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1248 {
1249     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1250     LONG ret = 0;
1251
1252     if (!dc) return 0;
1253
1254     TRACE("hDC %p, flags %04x\n",hdc,flags);
1255
1256     if (flags & DCHF_INVALIDATEVISRGN)
1257         ret = InterlockedExchange( &dc->dirty, 1 );
1258     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1259         ret = InterlockedExchange( &dc->dirty, 0 );
1260
1261     GDI_ReleaseObj( hdc );
1262
1263     if (flags & DCHF_RESETDC) ret = reset_dc_state( hdc );
1264     return ret;
1265 }
1266
1267 /***********************************************************************
1268  *           SetICMMode    (GDI32.@)
1269  */
1270 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1271 {
1272 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1273     if (iEnableICM == ICM_OFF) return ICM_OFF;
1274     if (iEnableICM == ICM_ON) return 0;
1275     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1276     return 0;
1277 }
1278
1279 /***********************************************************************
1280  *           GetDeviceGammaRamp    (GDI32.@)
1281  */
1282 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1283 {
1284     BOOL ret = FALSE;
1285     DC *dc = get_dc_ptr( hDC );
1286
1287     TRACE("%p, %p\n", hDC, ptr);
1288     if( dc )
1289     {
1290         if (GetObjectType( hDC ) != OBJ_MEMDC)
1291         {
1292             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1293             ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1294         }
1295         else SetLastError( ERROR_INVALID_PARAMETER );
1296         release_dc_ptr( dc );
1297     }
1298     return ret;
1299 }
1300
1301 static BOOL check_gamma_ramps(void *ptr)
1302 {
1303     WORD *ramp = ptr;
1304
1305     while (ramp < (WORD*)ptr + 3 * 256)
1306     {
1307         float r_x, r_y, r_lx, r_ly, r_d, r_v, r_e, g_avg, g_min, g_max;
1308         unsigned i, f, l, g_n, c;
1309
1310         f = ramp[0];
1311         l = ramp[255];
1312         if (f >= l)
1313         {
1314             TRACE("inverted or flat gamma ramp (%d->%d), rejected\n", f, l);
1315             return FALSE;
1316         }
1317         r_d = l - f;
1318         g_min = g_max = g_avg = 0.0;
1319
1320         /* check gamma ramp entries to estimate the gamma */
1321         TRACE("analyzing gamma ramp (%d->%d)\n", f, l);
1322         for (i=1, g_n=0; i<255; i++)
1323         {
1324             if (ramp[i] < f || ramp[i] > l)
1325             {
1326                 TRACE("strange gamma ramp ([%d]=%d for %d->%d), rejected\n", i, ramp[i], f, l);
1327                 return FALSE;
1328             }
1329             c = ramp[i] - f;
1330             if (!c) continue; /* avoid log(0) */
1331
1332             /* normalize entry values into 0..1 range */
1333             r_x = i/255.0; r_y = c / r_d;
1334             /* compute logarithms of values */
1335             r_lx = log(r_x); r_ly = log(r_y);
1336             /* compute gamma for this entry */
1337             r_v = r_ly / r_lx;
1338             /* compute differential (error estimate) for this entry */
1339             /* some games use table-based logarithms that magnifies the error by 128 */
1340             r_e = -r_lx * 128 / (c * r_lx * r_lx);
1341
1342             /* compute min & max while compensating for estimated error */
1343             if (!g_n || g_min > (r_v + r_e)) g_min = r_v + r_e;
1344             if (!g_n || g_max < (r_v - r_e)) g_max = r_v - r_e;
1345
1346             /* add to average */
1347             g_avg += r_v;
1348             g_n++;
1349         }
1350
1351         if (!g_n)
1352         {
1353             TRACE("no gamma data, shouldn't happen\n");
1354             return FALSE;
1355         }
1356         g_avg /= g_n;
1357         TRACE("low bias is %d, high is %d, gamma is %5.3f\n", f, 65535-l, g_avg);
1358
1359         /* check that the gamma is reasonably uniform across the ramp */
1360         if (g_max - g_min > 12.8)
1361         {
1362             TRACE("ramp not uniform (max=%f, min=%f, avg=%f), rejected\n", g_max, g_min, g_avg);
1363             return FALSE;
1364         }
1365
1366         /* check that the gamma is not too bright */
1367         if (g_avg < 0.2)
1368         {
1369             TRACE("too bright gamma ( %5.3f), rejected\n", g_avg);
1370             return FALSE;
1371         }
1372
1373         ramp += 256;
1374     }
1375
1376     return TRUE;
1377 }
1378
1379 /***********************************************************************
1380  *           SetDeviceGammaRamp    (GDI32.@)
1381  */
1382 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1383 {
1384     BOOL ret = FALSE;
1385     DC *dc = get_dc_ptr( hDC );
1386
1387     TRACE("%p, %p\n", hDC, ptr);
1388     if( dc )
1389     {
1390         if (GetObjectType( hDC ) != OBJ_MEMDC)
1391         {
1392             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1393
1394             if (check_gamma_ramps(ptr))
1395                 ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1396         }
1397         else SetLastError( ERROR_INVALID_PARAMETER );
1398         release_dc_ptr( dc );
1399     }
1400     return ret;
1401 }
1402
1403 /***********************************************************************
1404  *           GetColorSpace    (GDI32.@)
1405  */
1406 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1407 {
1408 /*FIXME    Need to do whatever GetColorSpace actually does */
1409     return 0;
1410 }
1411
1412 /***********************************************************************
1413  *           CreateColorSpaceA    (GDI32.@)
1414  */
1415 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1416 {
1417   FIXME( "stub\n" );
1418   return 0;
1419 }
1420
1421 /***********************************************************************
1422  *           CreateColorSpaceW    (GDI32.@)
1423  */
1424 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1425 {
1426   FIXME( "stub\n" );
1427   return 0;
1428 }
1429
1430 /***********************************************************************
1431  *           DeleteColorSpace     (GDI32.@)
1432  */
1433 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1434 {
1435   FIXME( "stub\n" );
1436
1437   return TRUE;
1438 }
1439
1440 /***********************************************************************
1441  *           SetColorSpace     (GDI32.@)
1442  */
1443 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1444 {
1445   FIXME( "stub\n" );
1446
1447   return hColorSpace;
1448 }
1449
1450 /***********************************************************************
1451  *           GetBoundsRect    (GDI32.@)
1452  */
1453 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1454 {
1455     PHYSDEV physdev;
1456     RECT device_rect;
1457     UINT ret;
1458     DC *dc = get_dc_ptr( hdc );
1459
1460     if ( !dc ) return 0;
1461
1462     physdev = GET_DC_PHYSDEV( dc, pGetBoundsRect );
1463     ret = physdev->funcs->pGetBoundsRect( physdev, &device_rect, DCB_RESET );
1464     if (!ret)
1465     {
1466         release_dc_ptr( dc );
1467         return 0;
1468     }
1469     if (dc->bounds_enabled && ret == DCB_SET) add_bounds_rect( &dc->bounds, &device_rect );
1470
1471     if (rect)
1472     {
1473         if (is_rect_empty( &dc->bounds ))
1474         {
1475             rect->left = rect->top = rect->right = rect->bottom = 0;
1476             ret = DCB_RESET;
1477         }
1478         else
1479         {
1480             *rect = dc->bounds;
1481             rect->left   = max( rect->left, 0 );
1482             rect->top    = max( rect->top, 0 );
1483             rect->right  = min( rect->right, dc->vis_rect.right - dc->vis_rect.left );
1484             rect->bottom = min( rect->bottom, dc->vis_rect.bottom - dc->vis_rect.top );
1485             ret = DCB_SET;
1486         }
1487         dp_to_lp( dc, (POINT *)rect, 2 );
1488     }
1489     else ret = 0;
1490
1491     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1492     release_dc_ptr( dc );
1493     return ret;
1494 }
1495
1496
1497 /***********************************************************************
1498  *           SetBoundsRect    (GDI32.@)
1499  */
1500 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1501 {
1502     PHYSDEV physdev;
1503     UINT ret;
1504     DC *dc;
1505
1506     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1507     if (!(dc = get_dc_ptr( hdc ))) return 0;
1508
1509     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
1510     ret = physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, flags );
1511     if (!ret)
1512     {
1513         release_dc_ptr( dc );
1514         return 0;
1515     }
1516
1517     ret = (dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE) |
1518           (is_rect_empty( &dc->bounds ) ? ret & DCB_SET : DCB_SET);
1519
1520     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1521
1522     if ((flags & DCB_ACCUMULATE) && rect)
1523     {
1524         RECT rc = *rect;
1525
1526         lp_to_dp( dc, (POINT *)&rc, 2 );
1527         add_bounds_rect( &dc->bounds, &rc );
1528     }
1529
1530     if (flags & DCB_ENABLE) dc->bounds_enabled = TRUE;
1531     if (flags & DCB_DISABLE) dc->bounds_enabled = FALSE;
1532
1533     release_dc_ptr( dc );
1534     return ret;
1535 }
1536
1537
1538 /***********************************************************************
1539  *              GetRelAbs               (GDI32.@)
1540  */
1541 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1542 {
1543     INT ret = 0;
1544     DC *dc = get_dc_ptr( hdc );
1545     if (dc)
1546     {
1547         ret = dc->relAbsMode;
1548         release_dc_ptr( dc );
1549     }
1550     return ret;
1551 }
1552
1553
1554
1555
1556 /***********************************************************************
1557  *              GetBkMode (GDI32.@)
1558  */
1559 INT WINAPI GetBkMode( HDC hdc )
1560 {
1561     INT ret = 0;
1562     DC * dc = get_dc_ptr( hdc );
1563     if (dc)
1564     {
1565         ret = dc->backgroundMode;
1566         release_dc_ptr( dc );
1567     }
1568     return ret;
1569 }
1570
1571
1572 /***********************************************************************
1573  *              SetBkMode (GDI32.@)
1574  */
1575 INT WINAPI SetBkMode( HDC hdc, INT mode )
1576 {
1577     INT ret = 0;
1578     DC *dc;
1579
1580     if ((mode <= 0) || (mode > BKMODE_LAST))
1581     {
1582         SetLastError(ERROR_INVALID_PARAMETER);
1583         return 0;
1584     }
1585     if ((dc = get_dc_ptr( hdc )))
1586     {
1587         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1588         mode = physdev->funcs->pSetBkMode( physdev, mode );
1589         if (mode)
1590         {
1591             ret = dc->backgroundMode;
1592             dc->backgroundMode = mode;
1593         }
1594         release_dc_ptr( dc );
1595     }
1596     return ret;
1597 }
1598
1599
1600 /***********************************************************************
1601  *              GetROP2 (GDI32.@)
1602  */
1603 INT WINAPI GetROP2( HDC hdc )
1604 {
1605     INT ret = 0;
1606     DC * dc = get_dc_ptr( hdc );
1607     if (dc)
1608     {
1609         ret = dc->ROPmode;
1610         release_dc_ptr( dc );
1611     }
1612     return ret;
1613 }
1614
1615
1616 /***********************************************************************
1617  *              SetROP2 (GDI32.@)
1618  */
1619 INT WINAPI SetROP2( HDC hdc, INT mode )
1620 {
1621     INT ret = 0;
1622     DC *dc;
1623
1624     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1625     {
1626         SetLastError(ERROR_INVALID_PARAMETER);
1627         return 0;
1628     }
1629     if ((dc = get_dc_ptr( hdc )))
1630     {
1631         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1632         mode = physdev->funcs->pSetROP2( physdev, mode );
1633         if (mode)
1634         {
1635             ret = dc->ROPmode;
1636             dc->ROPmode = mode;
1637         }
1638         release_dc_ptr( dc );
1639     }
1640     return ret;
1641 }
1642
1643
1644 /***********************************************************************
1645  *              SetRelAbs (GDI32.@)
1646  */
1647 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1648 {
1649     INT ret = 0;
1650     DC *dc;
1651
1652     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1653     {
1654         SetLastError(ERROR_INVALID_PARAMETER);
1655         return 0;
1656     }
1657     if ((dc = get_dc_ptr( hdc )))
1658     {
1659         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1660         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1661         if (mode)
1662         {
1663             ret = dc->relAbsMode;
1664             dc->relAbsMode = mode;
1665         }
1666         release_dc_ptr( dc );
1667     }
1668     return ret;
1669 }
1670
1671
1672 /***********************************************************************
1673  *              GetPolyFillMode (GDI32.@)
1674  */
1675 INT WINAPI GetPolyFillMode( HDC hdc )
1676 {
1677     INT ret = 0;
1678     DC * dc = get_dc_ptr( hdc );
1679     if (dc)
1680     {
1681         ret = dc->polyFillMode;
1682         release_dc_ptr( dc );
1683     }
1684     return ret;
1685 }
1686
1687
1688 /***********************************************************************
1689  *              SetPolyFillMode (GDI32.@)
1690  */
1691 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1692 {
1693     INT ret = 0;
1694     DC *dc;
1695
1696     if ((mode <= 0) || (mode > POLYFILL_LAST))
1697     {
1698         SetLastError(ERROR_INVALID_PARAMETER);
1699         return 0;
1700     }
1701     if ((dc = get_dc_ptr( hdc )))
1702     {
1703         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1704         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1705         if (mode)
1706         {
1707             ret = dc->polyFillMode;
1708             dc->polyFillMode = mode;
1709         }
1710         release_dc_ptr( dc );
1711     }
1712     return ret;
1713 }
1714
1715
1716 /***********************************************************************
1717  *              GetStretchBltMode (GDI32.@)
1718  */
1719 INT WINAPI GetStretchBltMode( HDC hdc )
1720 {
1721     INT ret = 0;
1722     DC * dc = get_dc_ptr( hdc );
1723     if (dc)
1724     {
1725         ret = dc->stretchBltMode;
1726         release_dc_ptr( dc );
1727     }
1728     return ret;
1729 }
1730
1731
1732 /***********************************************************************
1733  *              SetStretchBltMode (GDI32.@)
1734  */
1735 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1736 {
1737     INT ret = 0;
1738     DC *dc;
1739
1740     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1741     {
1742         SetLastError(ERROR_INVALID_PARAMETER);
1743         return 0;
1744     }
1745     if ((dc = get_dc_ptr( hdc )))
1746     {
1747         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1748         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1749         if (mode)
1750         {
1751             ret = dc->stretchBltMode;
1752             dc->stretchBltMode = mode;
1753         }
1754         release_dc_ptr( dc );
1755     }
1756     return ret;
1757 }
1758
1759
1760 /***********************************************************************
1761  *              GetMapMode (GDI32.@)
1762  */
1763 INT WINAPI GetMapMode( HDC hdc )
1764 {
1765     INT ret = 0;
1766     DC * dc = get_dc_ptr( hdc );
1767     if (dc)
1768     {
1769         ret = dc->MapMode;
1770         release_dc_ptr( dc );
1771     }
1772     return ret;
1773 }
1774
1775
1776 /***********************************************************************
1777  *              GetBrushOrgEx (GDI32.@)
1778  */
1779 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1780 {
1781     DC * dc = get_dc_ptr( hdc );
1782     if (!dc) return FALSE;
1783     *pt = dc->brush_org;
1784     release_dc_ptr( dc );
1785     return TRUE;
1786 }
1787
1788
1789 /***********************************************************************
1790  *              GetCurrentPositionEx (GDI32.@)
1791  */
1792 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1793 {
1794     DC * dc = get_dc_ptr( hdc );
1795     if (!dc) return FALSE;
1796     *pt = dc->cur_pos;
1797     release_dc_ptr( dc );
1798     return TRUE;
1799 }
1800
1801
1802 /***********************************************************************
1803  *              GetViewportExtEx (GDI32.@)
1804  */
1805 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1806 {
1807     DC * dc = get_dc_ptr( hdc );
1808     if (!dc) return FALSE;
1809     *size = dc->vport_ext;
1810     release_dc_ptr( dc );
1811     return TRUE;
1812 }
1813
1814
1815 /***********************************************************************
1816  *              GetViewportOrgEx (GDI32.@)
1817  */
1818 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1819 {
1820     DC * dc = get_dc_ptr( hdc );
1821     if (!dc) return FALSE;
1822     *pt = dc->vport_org;
1823     release_dc_ptr( dc );
1824     return TRUE;
1825 }
1826
1827
1828 /***********************************************************************
1829  *              GetWindowExtEx (GDI32.@)
1830  */
1831 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1832 {
1833     DC * dc = get_dc_ptr( hdc );
1834     if (!dc) return FALSE;
1835     *size = dc->wnd_ext;
1836     release_dc_ptr( dc );
1837     return TRUE;
1838 }
1839
1840
1841 /***********************************************************************
1842  *              GetWindowOrgEx (GDI32.@)
1843  */
1844 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1845 {
1846     DC * dc = get_dc_ptr( hdc );
1847     if (!dc) return FALSE;
1848     *pt = dc->wnd_org;
1849     release_dc_ptr( dc );
1850     return TRUE;
1851 }
1852
1853
1854 /***********************************************************************
1855  *           GetLayout    (GDI32.@)
1856  *
1857  * Gets left->right or right->left text layout flags of a dc.
1858  *
1859  */
1860 DWORD WINAPI GetLayout(HDC hdc)
1861 {
1862     DWORD layout = GDI_ERROR;
1863
1864     DC * dc = get_dc_ptr( hdc );
1865     if (dc)
1866     {
1867         layout = dc->layout;
1868         release_dc_ptr( dc );
1869     }
1870
1871     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1872
1873     return layout;
1874 }
1875
1876 /***********************************************************************
1877  *           SetLayout    (GDI32.@)
1878  *
1879  * Sets left->right or right->left text layout flags of a dc.
1880  *
1881  */
1882 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1883 {
1884     DWORD oldlayout = GDI_ERROR;
1885
1886     DC * dc = get_dc_ptr( hdc );
1887     if (dc)
1888     {
1889         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1890         layout = physdev->funcs->pSetLayout( physdev, layout );
1891         if (layout != GDI_ERROR)
1892         {
1893             oldlayout = dc->layout;
1894             dc->layout = layout;
1895             if (layout != oldlayout)
1896             {
1897                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1898                 DC_UpdateXforms( dc );
1899             }
1900         }
1901         release_dc_ptr( dc );
1902     }
1903
1904     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1905
1906     return oldlayout;
1907 }
1908
1909 /***********************************************************************
1910  *           GetDCBrushColor    (GDI32.@)
1911  */
1912 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1913 {
1914     DC *dc;
1915     COLORREF dcBrushColor = CLR_INVALID;
1916
1917     TRACE("hdc(%p)\n", hdc);
1918
1919     dc = get_dc_ptr( hdc );
1920     if (dc)
1921     {
1922         dcBrushColor = dc->dcBrushColor;
1923         release_dc_ptr( dc );
1924     }
1925
1926     return dcBrushColor;
1927 }
1928
1929 /***********************************************************************
1930  *           SetDCBrushColor    (GDI32.@)
1931  */
1932 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1933 {
1934     DC *dc;
1935     COLORREF oldClr = CLR_INVALID;
1936
1937     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1938
1939     dc = get_dc_ptr( hdc );
1940     if (dc)
1941     {
1942         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1943         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1944         if (crColor != CLR_INVALID)
1945         {
1946             oldClr = dc->dcBrushColor;
1947             dc->dcBrushColor = crColor;
1948         }
1949         release_dc_ptr( dc );
1950     }
1951
1952     return oldClr;
1953 }
1954
1955 /***********************************************************************
1956  *           GetDCPenColor    (GDI32.@)
1957  */
1958 COLORREF WINAPI GetDCPenColor(HDC hdc)
1959 {
1960     DC *dc;
1961     COLORREF dcPenColor = CLR_INVALID;
1962
1963     TRACE("hdc(%p)\n", hdc);
1964
1965     dc = get_dc_ptr( hdc );
1966     if (dc)
1967     {
1968         dcPenColor = dc->dcPenColor;
1969         release_dc_ptr( dc );
1970     }
1971
1972     return dcPenColor;
1973 }
1974
1975 /***********************************************************************
1976  *           SetDCPenColor    (GDI32.@)
1977  */
1978 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
1979 {
1980     DC *dc;
1981     COLORREF oldClr = CLR_INVALID;
1982
1983     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1984
1985     dc = get_dc_ptr( hdc );
1986     if (dc)
1987     {
1988         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
1989         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
1990         if (crColor != CLR_INVALID)
1991         {
1992             oldClr = dc->dcPenColor;
1993             dc->dcPenColor = crColor;
1994         }
1995         release_dc_ptr( dc );
1996     }
1997
1998     return oldClr;
1999 }
2000
2001 /***********************************************************************
2002  *           CancelDC    (GDI32.@)
2003  */
2004 BOOL WINAPI CancelDC(HDC hdc)
2005 {
2006     FIXME("stub\n");
2007     return TRUE;
2008 }
2009
2010 /*******************************************************************
2011  *      GetMiterLimit [GDI32.@]
2012  *
2013  *
2014  */
2015 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2016 {
2017     BOOL bRet = FALSE;
2018     DC *dc;
2019
2020     TRACE("(%p,%p)\n", hdc, peLimit);
2021
2022     dc = get_dc_ptr( hdc );
2023     if (dc)
2024     {
2025         if (peLimit)
2026             *peLimit = dc->miterLimit;
2027
2028         release_dc_ptr( dc );
2029         bRet = TRUE;
2030     }
2031     return bRet;
2032 }
2033
2034 /*******************************************************************
2035  *      SetMiterLimit [GDI32.@]
2036  *
2037  *
2038  */
2039 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2040 {
2041     BOOL bRet = FALSE;
2042     DC *dc;
2043
2044     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2045
2046     dc = get_dc_ptr( hdc );
2047     if (dc)
2048     {
2049         if (peOldLimit)
2050             *peOldLimit = dc->miterLimit;
2051         dc->miterLimit = eNewLimit;
2052         release_dc_ptr( dc );
2053         bRet = TRUE;
2054     }
2055     return bRet;
2056 }
2057
2058 /*******************************************************************
2059  *      GdiIsMetaPrintDC [GDI32.@]
2060  */
2061 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2062 {
2063     FIXME("%p\n", hdc);
2064     return FALSE;
2065 }
2066
2067 /*******************************************************************
2068  *      GdiIsMetaFileDC [GDI32.@]
2069  */
2070 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2071 {
2072     TRACE("%p\n", hdc);
2073
2074     switch( GetObjectType( hdc ) )
2075     {
2076     case OBJ_METADC:
2077     case OBJ_ENHMETADC:
2078         return TRUE;
2079     }
2080     return FALSE;
2081 }
2082
2083 /*******************************************************************
2084  *      GdiIsPlayMetafileDC [GDI32.@]
2085  */
2086 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2087 {
2088     FIXME("%p\n", hdc);
2089     return FALSE;
2090 }