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     if (dc->disabled)
 207     {
 208         GDI_ReleaseObj( hdc );
 209         return NULL;
 210     }
 211
 212     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 213     {
 214         dc->thread = GetCurrentThreadId();
 215     }
 216     else if (dc->thread != GetCurrentThreadId())
 217     {
 218         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 219         GDI_ReleaseObj( hdc );
 220         return NULL;
 221     }
 222     else InterlockedIncrement( &dc->refcount );
 223
 224     GDI_ReleaseObj( hdc );
 225     return dc;
 226 }
 227
 228
 229 /***********************************************************************
 230  *           release_dc_ptr
 231  */
 232 void release_dc_ptr( DC *dc )
 233 {
 234     LONG ref;
 235
 236     dc->thread = 0;
 237     ref = InterlockedDecrement( &dc->refcount );
 238     assert( ref >= 0 );
 239     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 240 }
 241
 242
 243 /***********************************************************************
 244  *           update_dc
 245  *
 246  * Make sure the DC vis region is up to date.
 247  * This function may call up to USER so the GDI lock should _not_
 248  * be held when calling it.
 249  */
 250 void update_dc( DC *dc )
 251 {
 252     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 253         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 254 }
 255
 256
 257 /***********************************************************************
 258  *           DC_DeleteObject
 259  */
 260 static BOOL DC_DeleteObject( HGDIOBJ handle )
 261 {
 262     return DeleteDC( handle );
 263 }
 264
 265
 266 /***********************************************************************
 267  *           DC_InitDC
 268  *
 269  * Setup device-specific DC values for a newly created DC.
 270  */
 271 void DC_InitDC( DC* dc )
 272 {
 273     PHYSDEV physdev = GET_DC_PHYSDEV( dc, pRealizeDefaultPalette );
 274     physdev->funcs->pRealizeDefaultPalette( physdev );
 275     SetTextColor( dc->hSelf, dc->textColor );
 276     SetBkColor( dc->hSelf, dc->backgroundColor );
 277     SelectObject( dc->hSelf, dc->hPen );
 278     SelectObject( dc->hSelf, dc->hBrush );
 279     SelectObject( dc->hSelf, dc->hFont );
 280     update_dc_clipping( dc );
 281     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 282     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
 283     physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE );
 284 }
 285
 286
 287 /***********************************************************************
 288  *           DC_InvertXform
 289  *
 290  * Computes the inverse of the transformation xformSrc and stores it to
 291  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 292  * is singular.
 293  */
 294 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 295 {
 296     double determinant;
 297
 298     determinant = xformSrc->eM11*xformSrc->eM22 -
 299         xformSrc->eM12*xformSrc->eM21;
 300     if (determinant > -1e-12 && determinant < 1e-12)
 301         return FALSE;
 302
 303     xformDest->eM11 =  xformSrc->eM22 / determinant;
 304     xformDest->eM12 = -xformSrc->eM12 / determinant;
 305     xformDest->eM21 = -xformSrc->eM21 / determinant;
 306     xformDest->eM22 =  xformSrc->eM11 / determinant;
 307     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 308                        xformSrc->eDy * xformDest->eM21;
 309     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 310                        xformSrc->eDy * xformDest->eM22;
 311
 312     return TRUE;
 313 }
 314
 315 /* Construct a transformation to do the window-to-viewport conversion */
 316 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 317 {
 318     double scaleX, scaleY;
 319     scaleX = (double)dc->vport_ext.cx / (double)dc->wnd_ext.cx;
 320     scaleY = (double)dc->vport_ext.cy / (double)dc->wnd_ext.cy;
 321
 322     if (dc->layout & LAYOUT_RTL) scaleX = -scaleX;
 323     xform->eM11 = scaleX;
 324     xform->eM12 = 0.0;
 325     xform->eM21 = 0.0;
 326     xform->eM22 = scaleY;
 327     xform->eDx  = (double)dc->vport_org.x - scaleX * (double)dc->wnd_org.x;
 328     xform->eDy  = (double)dc->vport_org.y - scaleY * (double)dc->wnd_org.y;
 329     if (dc->layout & LAYOUT_RTL) xform->eDx = dc->vis_rect.right - dc->vis_rect.left - 1 - xform->eDx;
 330 }
 331
 332 /***********************************************************************
 333  *        linear_xform_cmp
 334  *
 335  * Compares the linear transform portion of two XFORMs (i.e. the 2x2 submatrix).
 336  * Returns 0 if they match.
 337  */
 338 static inline int linear_xform_cmp( const XFORM *a, const XFORM *b )
 339 {
 340     return memcmp( a, b, FIELD_OFFSET( XFORM, eDx ) );
 341 }
 342
 343 /***********************************************************************
 344  *           DC_UpdateXforms
 345  *
 346  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 347  * fields of the specified DC by creating a transformation that
 348  * represents the current mapping mode and combining it with the DC's
 349  * world transform. This function should be called whenever the
 350  * parameters associated with the mapping mode (window and viewport
 351  * extents and origins) or the world transform change.
 352  */
 353 void DC_UpdateXforms( DC *dc )
 354 {
 355     XFORM xformWnd2Vport, oldworld2vport;
 356
 357     construct_window_to_viewport(dc, &xformWnd2Vport);
 358
 359     oldworld2vport = dc->xformWorld2Vport;
 360     /* Combine with the world transformation */
 361     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 362         &xformWnd2Vport );
 363
 364     /* Create inverse of world-to-viewport transformation */
 365     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 366         &dc->xformVport2World );
 367
 368     /* Reselect the font and pen back into the dc so that the size
 369        gets updated. */
 370     if (linear_xform_cmp( &oldworld2vport, &dc->xformWorld2Vport ) &&
 371         !GdiIsMetaFileDC(dc->hSelf))
 372     {
 373         SelectObject(dc->hSelf, dc->hFont);
 374         SelectObject(dc->hSelf, dc->hPen);
 375     }
 376 }
 377
 378
 379 /***********************************************************************
 380  *           nulldrv_SaveDC
 381  */
 382 INT nulldrv_SaveDC( PHYSDEV dev )
 383 {
 384     DC *newdc, *dc = get_nulldrv_dc( dev );
 385
 386     if (!(newdc = HeapAlloc( GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*newdc )))) return 0;
 387     newdc->layout           = dc->layout;
 388     newdc->hPen             = dc->hPen;
 389     newdc->hBrush           = dc->hBrush;
 390     newdc->hFont            = dc->hFont;
 391     newdc->hBitmap          = dc->hBitmap;
 392     newdc->hPalette         = dc->hPalette;
 393     newdc->ROPmode          = dc->ROPmode;
 394     newdc->polyFillMode     = dc->polyFillMode;
 395     newdc->stretchBltMode   = dc->stretchBltMode;
 396     newdc->relAbsMode       = dc->relAbsMode;
 397     newdc->backgroundMode   = dc->backgroundMode;
 398     newdc->backgroundColor  = dc->backgroundColor;
 399     newdc->textColor        = dc->textColor;
 400     newdc->dcBrushColor     = dc->dcBrushColor;
 401     newdc->dcPenColor       = dc->dcPenColor;
 402     newdc->brush_org        = dc->brush_org;
 403     newdc->mapperFlags      = dc->mapperFlags;
 404     newdc->textAlign        = dc->textAlign;
 405     newdc->charExtra        = dc->charExtra;
 406     newdc->breakExtra       = dc->breakExtra;
 407     newdc->breakRem         = dc->breakRem;
 408     newdc->MapMode          = dc->MapMode;
 409     newdc->GraphicsMode     = dc->GraphicsMode;
 410     newdc->cur_pos          = dc->cur_pos;
 411     newdc->ArcDirection     = dc->ArcDirection;
 412     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 413     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 414     newdc->xformVport2World = dc->xformVport2World;
 415     newdc->vport2WorldValid = dc->vport2WorldValid;
 416     newdc->wnd_org          = dc->wnd_org;
 417     newdc->wnd_ext          = dc->wnd_ext;
 418     newdc->vport_org        = dc->vport_org;
 419     newdc->vport_ext        = dc->vport_ext;
 420     newdc->virtual_res      = dc->virtual_res;
 421     newdc->virtual_size     = dc->virtual_size;
 422
 423     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 424
 425     if (dc->hClipRgn)
 426     {
 427         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 428         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 429     }
 430     if (dc->hMetaRgn)
 431     {
 432         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 433         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 434     }
 435
 436     if (!PATH_SavePath( newdc, dc ))
 437     {
 438         release_dc_ptr( dc );
 439         free_dc_state( newdc );
 440         return 0;
 441     }
 442
 443     newdc->saved_dc = dc->saved_dc;
 444     dc->saved_dc = newdc;
 445     return ++dc->saveLevel;
 446 }
 447
 448
 449 /***********************************************************************
 450  *           nulldrv_RestoreDC
 451  */
 452 BOOL nulldrv_RestoreDC( PHYSDEV dev, INT level )
 453 {
 454     DC *dcs, *first_dcs, *dc = get_nulldrv_dc( dev );
 455     INT save_level;
 456
 457     /* find the state level to restore */
 458
 459     if (abs(level) > dc->saveLevel || level == 0) return FALSE;
 460     if (level < 0) level = dc->saveLevel + level + 1;
 461     first_dcs = dc->saved_dc;
 462     for (dcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 463         dcs = dcs->saved_dc;
 464
 465     /* restore the state */
 466
 467     if (!PATH_RestorePath( dc, dcs )) return FALSE;
 468
 469     dc->layout           = dcs->layout;
 470     dc->ROPmode          = dcs->ROPmode;
 471     dc->polyFillMode     = dcs->polyFillMode;
 472     dc->stretchBltMode   = dcs->stretchBltMode;
 473     dc->relAbsMode       = dcs->relAbsMode;
 474     dc->backgroundMode   = dcs->backgroundMode;
 475     dc->backgroundColor  = dcs->backgroundColor;
 476     dc->textColor        = dcs->textColor;
 477     dc->dcBrushColor     = dcs->dcBrushColor;
 478     dc->dcPenColor       = dcs->dcPenColor;
 479     dc->brush_org        = dcs->brush_org;
 480     dc->mapperFlags      = dcs->mapperFlags;
 481     dc->textAlign        = dcs->textAlign;
 482     dc->charExtra        = dcs->charExtra;
 483     dc->breakExtra       = dcs->breakExtra;
 484     dc->breakRem         = dcs->breakRem;
 485     dc->MapMode          = dcs->MapMode;
 486     dc->GraphicsMode     = dcs->GraphicsMode;
 487     dc->cur_pos          = dcs->cur_pos;
 488     dc->ArcDirection     = dcs->ArcDirection;
 489     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 490     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 491     dc->xformVport2World = dcs->xformVport2World;
 492     dc->vport2WorldValid = dcs->vport2WorldValid;
 493     dc->wnd_org          = dcs->wnd_org;
 494     dc->wnd_ext          = dcs->wnd_ext;
 495     dc->vport_org        = dcs->vport_org;
 496     dc->vport_ext        = dcs->vport_ext;
 497     dc->virtual_res      = dcs->virtual_res;
 498     dc->virtual_size     = dcs->virtual_size;
 499
 500     if (dcs->hClipRgn)
 501     {
 502         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 503         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 504     }
 505     else
 506     {
 507         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 508         dc->hClipRgn = 0;
 509     }
 510     if (dcs->hMetaRgn)
 511     {
 512         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 513         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 514     }
 515     else
 516     {
 517         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 518         dc->hMetaRgn = 0;
 519     }
 520     DC_UpdateXforms( dc );
 521     update_dc_clipping( dc );
 522
 523     SelectObject( dev->hdc, dcs->hBitmap );
 524     SelectObject( dev->hdc, dcs->hBrush );
 525     SelectObject( dev->hdc, dcs->hFont );
 526     SelectObject( dev->hdc, dcs->hPen );
 527     SetBkColor( dev->hdc, dcs->backgroundColor);
 528     SetTextColor( dev->hdc, dcs->textColor);
 529     GDISelectPalette( dev->hdc, dcs->hPalette, FALSE );
 530
 531     dc->saved_dc  = dcs->saved_dc;
 532     dcs->saved_dc = 0;
 533     dc->saveLevel = save_level - 1;
 534
 535     /* now destroy all the saved DCs */
 536
 537     while (first_dcs)
 538     {
 539         DC *next = first_dcs->saved_dc;
 540         free_dc_state( first_dcs );
 541         first_dcs = next;
 542     }
 543     return TRUE;
 544 }
 545
 546
 547 /***********************************************************************
 548  *           reset_dc_state
 549  */
 550 static BOOL reset_dc_state( HDC hdc )
 551 {
 552     DC *dc, *dcs, *next;
 553
 554     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 555
 556     set_initial_dc_state( dc );
 557     SetBkColor( hdc, RGB( 255, 255, 255 ));
 558     SetTextColor( hdc, RGB( 0, 0, 0 ));
 559     SelectObject( hdc, GetStockObject( WHITE_BRUSH ));
 560     SelectObject( hdc, GetStockObject( SYSTEM_FONT ));
 561     SelectObject( hdc, GetStockObject( BLACK_PEN ));
 562     SetVirtualResolution( hdc, 0, 0, 0, 0 );
 563     GDISelectPalette( hdc, GetStockObject( DEFAULT_PALETTE ), FALSE );
 564     SetBoundsRect( hdc, NULL, DCB_DISABLE );
 565     AbortPath( hdc );
 566
 567     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 568     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 569     dc->hClipRgn = 0;
 570     dc->hMetaRgn = 0;
 571     update_dc_clipping( dc );
 572
 573     for (dcs = dc->saved_dc; dcs; dcs = next)
 574     {
 575         next = dcs->saved_dc;
 576         free_dc_state( dcs );
 577     }
 578     dc->saved_dc = NULL;
 579     dc->saveLevel = 0;
 580     release_dc_ptr( dc );
 581     return TRUE;
 582 }
 583
 584
 585 /***********************************************************************
 586  *           SaveDC    (GDI32.@)
 587  */
 588 INT WINAPI SaveDC( HDC hdc )
 589 {
 590     DC * dc;
 591     INT ret = 0;
 592
 593     if ((dc = get_dc_ptr( hdc )))
 594     {
 595         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSaveDC );
 596         ret = physdev->funcs->pSaveDC( physdev );
 597         release_dc_ptr( dc );
 598     }
 599     return ret;
 600 }
 601
 602
 603 /***********************************************************************
 604  *           RestoreDC    (GDI32.@)
 605  */
 606 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 607 {
 608     PHYSDEV physdev;
 609     DC *dc;
 610     BOOL success = FALSE;
 611
 612     TRACE("%p %d\n", hdc, level );
 613     if ((dc = get_dc_ptr( hdc )))
 614     {
 615         update_dc( dc );
 616         physdev = GET_DC_PHYSDEV( dc, pRestoreDC );
 617         success = physdev->funcs->pRestoreDC( physdev, level );
 618         release_dc_ptr( dc );
 619     }
 620     return success;
 621 }
 622
 623
 624 /***********************************************************************
 625  *           CreateDCW    (GDI32.@)
 626  */
 627 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 628                       const DEVMODEW *initData )
 629 {
 630     HDC hdc;
 631     DC * dc;
 632     const struct gdi_dc_funcs *funcs;
 633     WCHAR buf[300];
 634
 635     GDI_CheckNotLock();
 636
 637     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 638     {
 639         if (!driver)
 640         {
 641             ERR( "no device found for %s\n", debugstr_w(device) );
 642             return 0;
 643         }
 644         strcpyW(buf, driver);
 645     }
 646
 647     if (!(funcs = DRIVER_load_driver( buf )))
 648     {
 649         ERR( "no driver found for %s\n", debugstr_w(buf) );
 650         return 0;
 651     }
 652     if (!(dc = alloc_dc_ptr( OBJ_DC ))) return 0;
 653     hdc = dc->hSelf;
 654
 655     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 656
 657     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 658           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 659
 660     if (funcs->pCreateDC)
 661     {
 662         if (!funcs->pCreateDC( &dc->physDev, buf, device, output, initData ))
 663         {
 664             WARN("creation aborted by device\n" );
 665             free_dc_ptr( dc );
 666             return 0;
 667         }
 668     }
 669
 670     dc->vis_rect.left   = 0;
 671     dc->vis_rect.top    = 0;
 672     dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 673     dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 674
 675     DC_InitDC( dc );
 676     release_dc_ptr( dc );
 677     return hdc;
 678 }
 679
 680
 681 /***********************************************************************
 682  *           CreateDCA    (GDI32.@)
 683  */
 684 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 685                       const DEVMODEA *initData )
 686 {
 687     UNICODE_STRING driverW, deviceW, outputW;
 688     DEVMODEW *initDataW;
 689     HDC ret;
 690
 691     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 692     else driverW.Buffer = NULL;
 693
 694     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 695     else deviceW.Buffer = NULL;
 696
 697     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 698     else outputW.Buffer = NULL;
 699
 700     initDataW = NULL;
 701     if (initData)
 702     {
 703         /* don't convert initData for DISPLAY driver, it's not used */
 704         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 705             initDataW = GdiConvertToDevmodeW(initData);
 706     }
 707
 708     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 709
 710     RtlFreeUnicodeString(&driverW);
 711     RtlFreeUnicodeString(&deviceW);
 712     RtlFreeUnicodeString(&outputW);
 713     HeapFree(GetProcessHeap(), 0, initDataW);
 714     return ret;
 715 }
 716
 717
 718 /***********************************************************************
 719  *           CreateICA    (GDI32.@)
 720  */
 721 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 722                           const DEVMODEA* initData )
 723 {
 724       /* Nothing special yet for ICs */
 725     return CreateDCA( driver, device, output, initData );
 726 }
 727
 728
 729 /***********************************************************************
 730  *           CreateICW    (GDI32.@)
 731  */
 732 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 733                           const DEVMODEW* initData )
 734 {
 735       /* Nothing special yet for ICs */
 736     return CreateDCW( driver, device, output, initData );
 737 }
 738
 739
 740 /***********************************************************************
 741  *           CreateCompatibleDC   (GDI32.@)
 742  */
 743 HDC WINAPI CreateCompatibleDC( HDC hdc )
 744 {
 745     DC *dc, *origDC;
 746     HDC ret;
 747     const struct gdi_dc_funcs *funcs;
 748     PHYSDEV physDev = NULL;
 749
 750     GDI_CheckNotLock();
 751
 752     if (hdc)
 753     {
 754         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 755         physDev = GET_DC_PHYSDEV( origDC, pCreateCompatibleDC );
 756         funcs = physDev->funcs;
 757         release_dc_ptr( origDC );
 758     }
 759     else funcs = DRIVER_load_driver( displayW );
 760
 761     if (!(dc = alloc_dc_ptr( OBJ_MEMDC ))) return 0;
 762
 763     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 764
 765     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 766     dc->vis_rect.left   = 0;
 767     dc->vis_rect.top    = 0;
 768     dc->vis_rect.right  = 1;
 769     dc->vis_rect.bottom = 1;
 770     dc->device_rect = dc->vis_rect;
 771
 772     ret = dc->hSelf;
 773
 774     if (funcs->pCreateCompatibleDC && !funcs->pCreateCompatibleDC( physDev, &dc->physDev ))
 775     {
 776         WARN("creation aborted by device\n");
 777         free_dc_ptr( dc );
 778         return 0;
 779     }
 780
 781     if (!dib_driver.pCreateDC( &dc->physDev, NULL, NULL, NULL, NULL ))
 782     {
 783         free_dc_ptr( dc );
 784         return 0;
 785     }
 786     physDev = GET_DC_PHYSDEV( dc, pSelectBitmap );
 787     physDev->funcs->pSelectBitmap( physDev, dc->hBitmap );
 788
 789     DC_InitDC( dc );
 790     release_dc_ptr( dc );
 791     return ret;
 792 }
 793
 794
 795 /***********************************************************************
 796  *           DeleteDC    (GDI32.@)
 797  */
 798 BOOL WINAPI DeleteDC( HDC hdc )
 799 {
 800     DC * dc;
 801
 802     TRACE("%p\n", hdc );
 803
 804     GDI_CheckNotLock();
 805
 806     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 807     if (dc->refcount != 1)
 808     {
 809         FIXME( "not deleting busy DC %p refcount %u\n", dc->hSelf, dc->refcount );
 810         release_dc_ptr( dc );
 811         return FALSE;
 812     }
 813
 814     /* Call hook procedure to check whether is it OK to delete this DC */
 815     if (dc->hookProc && !dc->hookProc( dc->hSelf, DCHC_DELETEDC, dc->dwHookData, 0 ))
 816     {
 817         release_dc_ptr( dc );
 818         return TRUE;
 819     }
 820     reset_dc_state( hdc );
 821     free_dc_ptr( dc );
 822     return TRUE;
 823 }
 824
 825
 826 /***********************************************************************
 827  *           ResetDCW    (GDI32.@)
 828  */
 829 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 830 {
 831     DC *dc;
 832     HDC ret = 0;
 833
 834     if ((dc = get_dc_ptr( hdc )))
 835     {
 836         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pResetDC );
 837         ret = physdev->funcs->pResetDC( physdev, devmode );
 838         if (ret)  /* reset the visible region */
 839         {
 840             dc->dirty = 0;
 841             dc->vis_rect.left   = 0;
 842             dc->vis_rect.top    = 0;
 843             dc->vis_rect.right  = GetDeviceCaps( hdc, DESKTOPHORZRES );
 844             dc->vis_rect.bottom = GetDeviceCaps( hdc, DESKTOPVERTRES );
 845             if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 846             dc->hVisRgn = 0;
 847             update_dc_clipping( dc );
 848         }
 849         release_dc_ptr( dc );
 850     }
 851     return ret;
 852 }
 853
 854
 855 /***********************************************************************
 856  *           ResetDCA    (GDI32.@)
 857  */
 858 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 859 {
 860     DEVMODEW *devmodeW;
 861     HDC ret;
 862
 863     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 864     else devmodeW = NULL;
 865
 866     ret = ResetDCW(hdc, devmodeW);
 867
 868     HeapFree(GetProcessHeap(), 0, devmodeW);
 869     return ret;
 870 }
 871
 872
 873 /***********************************************************************
 874  *           GetDeviceCaps    (GDI32.@)
 875  */
 876 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 877 {
 878     DC *dc;
 879     INT ret = 0;
 880
 881     if ((dc = get_dc_ptr( hdc )))
 882     {
 883         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceCaps );
 884         ret = physdev->funcs->pGetDeviceCaps( physdev, cap );
 885         release_dc_ptr( dc );
 886     }
 887     return ret;
 888 }
 889
 890
 891 /***********************************************************************
 892  *              GetBkColor (GDI32.@)
 893  */
 894 COLORREF WINAPI GetBkColor( HDC hdc )
 895 {
 896     COLORREF ret = 0;
 897     DC * dc = get_dc_ptr( hdc );
 898     if (dc)
 899     {
 900         ret = dc->backgroundColor;
 901         release_dc_ptr( dc );
 902     }
 903     return ret;
 904 }
 905
 906
 907 /***********************************************************************
 908  *           SetBkColor    (GDI32.@)
 909  */
 910 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 911 {
 912     COLORREF ret = CLR_INVALID;
 913     DC * dc = get_dc_ptr( hdc );
 914
 915     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 916
 917     if (dc)
 918     {
 919         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkColor );
 920         ret = dc->backgroundColor;
 921         dc->backgroundColor = physdev->funcs->pSetBkColor( physdev, color );
 922         release_dc_ptr( dc );
 923     }
 924     return ret;
 925 }
 926
 927
 928 /***********************************************************************
 929  *              GetTextColor (GDI32.@)
 930  */
 931 COLORREF WINAPI GetTextColor( HDC hdc )
 932 {
 933     COLORREF ret = 0;
 934     DC * dc = get_dc_ptr( hdc );
 935     if (dc)
 936     {
 937         ret = dc->textColor;
 938         release_dc_ptr( dc );
 939     }
 940     return ret;
 941 }
 942
 943
 944 /***********************************************************************
 945  *           SetTextColor    (GDI32.@)
 946  */
 947 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 948 {
 949     COLORREF ret = CLR_INVALID;
 950     DC * dc = get_dc_ptr( hdc );
 951
 952     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 953
 954     if (dc)
 955     {
 956         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextColor );
 957         ret = dc->textColor;
 958         dc->textColor = physdev->funcs->pSetTextColor( physdev, color );
 959         release_dc_ptr( dc );
 960     }
 961     return ret;
 962 }
 963
 964
 965 /***********************************************************************
 966  *              GetTextAlign (GDI32.@)
 967  */
 968 UINT WINAPI GetTextAlign( HDC hdc )
 969 {
 970     UINT ret = 0;
 971     DC * dc = get_dc_ptr( hdc );
 972     if (dc)
 973     {
 974         ret = dc->textAlign;
 975         release_dc_ptr( dc );
 976     }
 977     return ret;
 978 }
 979
 980
 981 /***********************************************************************
 982  *           SetTextAlign    (GDI32.@)
 983  */
 984 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
 985 {
 986     UINT ret = GDI_ERROR;
 987     DC *dc = get_dc_ptr( hdc );
 988
 989     TRACE("hdc=%p align=%d\n", hdc, align);
 990
 991     if (dc)
 992     {
 993         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetTextAlign );
 994         align = physdev->funcs->pSetTextAlign( physdev, align );
 995         if (align != GDI_ERROR)
 996         {
 997             ret = dc->textAlign;
 998             dc->textAlign = align;
 999         }
1000         release_dc_ptr( dc );
1001     }
1002     return ret;
1003 }
1004
1005 /***********************************************************************
1006  *           GetDCOrgEx  (GDI32.@)
1007  */
1008 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1009 {
1010     DC * dc;
1011
1012     if (!lpp) return FALSE;
1013     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1014     lpp->x = dc->vis_rect.left;
1015     lpp->y = dc->vis_rect.top;
1016     release_dc_ptr( dc );
1017     return TRUE;
1018 }
1019
1020
1021 /***********************************************************************
1022  *              GetGraphicsMode (GDI32.@)
1023  */
1024 INT WINAPI GetGraphicsMode( HDC hdc )
1025 {
1026     INT ret = 0;
1027     DC * dc = get_dc_ptr( hdc );
1028     if (dc)
1029     {
1030         ret = dc->GraphicsMode;
1031         release_dc_ptr( dc );
1032     }
1033     return ret;
1034 }
1035
1036
1037 /***********************************************************************
1038  *           SetGraphicsMode    (GDI32.@)
1039  */
1040 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1041 {
1042     INT ret = 0;
1043     DC *dc = get_dc_ptr( hdc );
1044
1045     /* One would think that setting the graphics mode to GM_COMPATIBLE
1046      * would also reset the world transformation matrix to the unity
1047      * matrix. However, in Windows, this is not the case. This doesn't
1048      * make a lot of sense to me, but that's the way it is.
1049      */
1050     if (!dc) return 0;
1051     if ((mode > 0) && (mode <= GM_LAST))
1052     {
1053         ret = dc->GraphicsMode;
1054         dc->GraphicsMode = mode;
1055     }
1056     /* font metrics depend on the graphics mode */
1057     if (ret != mode) SelectObject(dc->hSelf, dc->hFont);
1058     release_dc_ptr( dc );
1059     return ret;
1060 }
1061
1062
1063 /***********************************************************************
1064  *              GetArcDirection (GDI32.@)
1065  */
1066 INT WINAPI GetArcDirection( HDC hdc )
1067 {
1068     INT ret = 0;
1069     DC * dc = get_dc_ptr( hdc );
1070     if (dc)
1071     {
1072         ret = dc->ArcDirection;
1073         release_dc_ptr( dc );
1074     }
1075     return ret;
1076 }
1077
1078
1079 /***********************************************************************
1080  *           SetArcDirection    (GDI32.@)
1081  */
1082 INT WINAPI SetArcDirection( HDC hdc, INT dir )
1083 {
1084     DC * dc;
1085     INT ret = 0;
1086
1087     if (dir != AD_COUNTERCLOCKWISE && dir != AD_CLOCKWISE)
1088     {
1089         SetLastError(ERROR_INVALID_PARAMETER);
1090         return 0;
1091     }
1092
1093     if ((dc = get_dc_ptr( hdc )))
1094     {
1095         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetArcDirection );
1096         dir = physdev->funcs->pSetArcDirection( physdev, dir );
1097         if (dir)
1098         {
1099             ret = dc->ArcDirection;
1100             dc->ArcDirection = dir;
1101         }
1102         release_dc_ptr( dc );
1103     }
1104     return ret;
1105 }
1106
1107
1108 /***********************************************************************
1109  *           GetWorldTransform    (GDI32.@)
1110  */
1111 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1112 {
1113     DC * dc;
1114     if (!xform) return FALSE;
1115     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1116     *xform = dc->xformWorld2Wnd;
1117     release_dc_ptr( dc );
1118     return TRUE;
1119 }
1120
1121
1122 /***********************************************************************
1123  *           GetTransform    (GDI32.@)
1124  *
1125  * Undocumented
1126  *
1127  * Returns one of the co-ordinate space transforms
1128  *
1129  * PARAMS
1130  *    hdc   [I] Device context.
1131  *    which [I] Which xform to return:
1132  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1133  *                  0x304 Page -> Device transform (the mapping mode transform).
1134  *                  0x204 World -> Device transform (the combination of the above two).
1135  *                  0x402 Device -> World transform (the inversion of the above).
1136  *    xform [O] The xform.
1137  *
1138  */
1139 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1140 {
1141     BOOL ret = TRUE;
1142     DC *dc = get_dc_ptr( hdc );
1143     if (!dc) return FALSE;
1144
1145     switch(which)
1146     {
1147     case 0x203:
1148         *xform = dc->xformWorld2Wnd;
1149         break;
1150
1151     case 0x304:
1152         construct_window_to_viewport(dc, xform);
1153         break;
1154
1155     case 0x204:
1156         *xform = dc->xformWorld2Vport;
1157         break;
1158
1159     case 0x402:
1160         *xform = dc->xformVport2World;
1161         break;
1162
1163     default:
1164         FIXME("Unknown code %x\n", which);
1165         ret = FALSE;
1166     }
1167
1168     release_dc_ptr( dc );
1169     return ret;
1170 }
1171
1172
1173 /****************************************************************************
1174  * CombineTransform [GDI32.@]
1175  * Combines two transformation matrices.
1176  *
1177  * PARAMS
1178  *    xformResult [O] Stores the result of combining the two matrices
1179  *    xform1      [I] Specifies the first matrix to apply
1180  *    xform2      [I] Specifies the second matrix to apply
1181  *
1182  * REMARKS
1183  *    The same matrix can be passed in for more than one of the parameters.
1184  *
1185  * RETURNS
1186  *  Success: TRUE.
1187  *  Failure: FALSE. Use GetLastError() to determine the cause.
1188  */
1189 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1190     const XFORM *xform2 )
1191 {
1192     XFORM xformTemp;
1193
1194     /* Check for illegal parameters */
1195     if (!xformResult || !xform1 || !xform2)
1196         return FALSE;
1197
1198     /* Create the result in a temporary XFORM, since xformResult may be
1199      * equal to xform1 or xform2 */
1200     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1201                      xform1->eM12 * xform2->eM21;
1202     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1203                      xform1->eM12 * xform2->eM22;
1204     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1205                      xform1->eM22 * xform2->eM21;
1206     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1207                      xform1->eM22 * xform2->eM22;
1208     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1209                      xform1->eDy  * xform2->eM21 +
1210                      xform2->eDx;
1211     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1212                      xform1->eDy  * xform2->eM22 +
1213                      xform2->eDy;
1214
1215     /* Copy the result to xformResult */
1216     *xformResult = xformTemp;
1217
1218     return TRUE;
1219 }
1220
1221
1222 /***********************************************************************
1223  *           SetDCHook   (GDI32.@)
1224  *
1225  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1226  */
1227 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1228 {
1229     DC *dc = get_dc_ptr( hdc );
1230
1231     if (!dc) return FALSE;
1232
1233     dc->dwHookData = dwHookData;
1234     dc->hookProc = hookProc;
1235     release_dc_ptr( dc );
1236     return TRUE;
1237 }
1238
1239
1240 /***********************************************************************
1241  *           GetDCHook   (GDI32.@)
1242  *
1243  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1244  */
1245 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1246 {
1247     DC *dc = get_dc_ptr( hdc );
1248     DWORD_PTR ret;
1249
1250     if (!dc) return 0;
1251     if (proc) *proc = dc->hookProc;
1252     ret = dc->dwHookData;
1253     release_dc_ptr( dc );
1254     return ret;
1255 }
1256
1257
1258 /***********************************************************************
1259  *           SetHookFlags   (GDI32.@)
1260  *
1261  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1262  */
1263 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1264 {
1265     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1266     LONG ret = 0;
1267
1268     if (!dc) return 0;
1269
1270     TRACE("hDC %p, flags %04x\n",hdc,flags);
1271
1272     if (flags & DCHF_INVALIDATEVISRGN)
1273         ret = InterlockedExchange( &dc->dirty, 1 );
1274     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1275         ret = InterlockedExchange( &dc->dirty, 0 );
1276
1277     if (flags & DCHF_DISABLEDC)
1278         ret = InterlockedExchange( &dc->disabled, 1 );
1279     else if (flags & DCHF_ENABLEDC)
1280         ret = InterlockedExchange( &dc->disabled, 0 );
1281
1282     GDI_ReleaseObj( hdc );
1283
1284     if (flags & DCHF_RESETDC) ret = reset_dc_state( hdc );
1285     return ret;
1286 }
1287
1288 /***********************************************************************
1289  *           SetICMMode    (GDI32.@)
1290  */
1291 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1292 {
1293 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1294     if (iEnableICM == ICM_OFF) return ICM_OFF;
1295     if (iEnableICM == ICM_ON) return 0;
1296     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1297     return 0;
1298 }
1299
1300 /***********************************************************************
1301  *           GetDeviceGammaRamp    (GDI32.@)
1302  */
1303 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1304 {
1305     BOOL ret = FALSE;
1306     DC *dc = get_dc_ptr( hDC );
1307
1308     TRACE("%p, %p\n", hDC, ptr);
1309     if( dc )
1310     {
1311         if (GetObjectType( hDC ) != OBJ_MEMDC)
1312         {
1313             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pGetDeviceGammaRamp );
1314             ret = physdev->funcs->pGetDeviceGammaRamp( physdev, ptr );
1315         }
1316         else SetLastError( ERROR_INVALID_PARAMETER );
1317         release_dc_ptr( dc );
1318     }
1319     return ret;
1320 }
1321
1322 static BOOL check_gamma_ramps(void *ptr)
1323 {
1324     WORD *ramp = ptr;
1325
1326     while (ramp < (WORD*)ptr + 3 * 256)
1327     {
1328         float r_x, r_y, r_lx, r_ly, r_d, r_v, r_e, g_avg, g_min, g_max;
1329         unsigned i, f, l, g_n, c;
1330
1331         f = ramp[0];
1332         l = ramp[255];
1333         if (f >= l)
1334         {
1335             TRACE("inverted or flat gamma ramp (%d->%d), rejected\n", f, l);
1336             return FALSE;
1337         }
1338         r_d = l - f;
1339         g_min = g_max = g_avg = 0.0;
1340
1341         /* check gamma ramp entries to estimate the gamma */
1342         TRACE("analyzing gamma ramp (%d->%d)\n", f, l);
1343         for (i=1, g_n=0; i<255; i++)
1344         {
1345             if (ramp[i] < f || ramp[i] > l)
1346             {
1347                 TRACE("strange gamma ramp ([%d]=%d for %d->%d), rejected\n", i, ramp[i], f, l);
1348                 return FALSE;
1349             }
1350             c = ramp[i] - f;
1351             if (!c) continue; /* avoid log(0) */
1352
1353             /* normalize entry values into 0..1 range */
1354             r_x = i/255.0; r_y = c / r_d;
1355             /* compute logarithms of values */
1356             r_lx = log(r_x); r_ly = log(r_y);
1357             /* compute gamma for this entry */
1358             r_v = r_ly / r_lx;
1359             /* compute differential (error estimate) for this entry */
1360             /* some games use table-based logarithms that magnifies the error by 128 */
1361             r_e = -r_lx * 128 / (c * r_lx * r_lx);
1362
1363             /* compute min & max while compensating for estimated error */
1364             if (!g_n || g_min > (r_v + r_e)) g_min = r_v + r_e;
1365             if (!g_n || g_max < (r_v - r_e)) g_max = r_v - r_e;
1366
1367             /* add to average */
1368             g_avg += r_v;
1369             g_n++;
1370         }
1371
1372         if (!g_n)
1373         {
1374             TRACE("no gamma data, shouldn't happen\n");
1375             return FALSE;
1376         }
1377         g_avg /= g_n;
1378         TRACE("low bias is %d, high is %d, gamma is %5.3f\n", f, 65535-l, g_avg);
1379
1380         /* check that the gamma is reasonably uniform across the ramp */
1381         if (g_max - g_min > 12.8)
1382         {
1383             TRACE("ramp not uniform (max=%f, min=%f, avg=%f), rejected\n", g_max, g_min, g_avg);
1384             return FALSE;
1385         }
1386
1387         /* check that the gamma is not too bright */
1388         if (g_avg < 0.2)
1389         {
1390             TRACE("too bright gamma ( %5.3f), rejected\n", g_avg);
1391             return FALSE;
1392         }
1393
1394         ramp += 256;
1395     }
1396
1397     return TRUE;
1398 }
1399
1400 /***********************************************************************
1401  *           SetDeviceGammaRamp    (GDI32.@)
1402  */
1403 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1404 {
1405     BOOL ret = FALSE;
1406     DC *dc = get_dc_ptr( hDC );
1407
1408     TRACE("%p, %p\n", hDC, ptr);
1409     if( dc )
1410     {
1411         if (GetObjectType( hDC ) != OBJ_MEMDC)
1412         {
1413             PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDeviceGammaRamp );
1414
1415             if (check_gamma_ramps(ptr))
1416                 ret = physdev->funcs->pSetDeviceGammaRamp( physdev, ptr );
1417         }
1418         else SetLastError( ERROR_INVALID_PARAMETER );
1419         release_dc_ptr( dc );
1420     }
1421     return ret;
1422 }
1423
1424 /***********************************************************************
1425  *           GetColorSpace    (GDI32.@)
1426  */
1427 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1428 {
1429 /*FIXME    Need to do whatever GetColorSpace actually does */
1430     return 0;
1431 }
1432
1433 /***********************************************************************
1434  *           CreateColorSpaceA    (GDI32.@)
1435  */
1436 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1437 {
1438   FIXME( "stub\n" );
1439   return 0;
1440 }
1441
1442 /***********************************************************************
1443  *           CreateColorSpaceW    (GDI32.@)
1444  */
1445 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1446 {
1447   FIXME( "stub\n" );
1448   return 0;
1449 }
1450
1451 /***********************************************************************
1452  *           DeleteColorSpace     (GDI32.@)
1453  */
1454 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1455 {
1456   FIXME( "stub\n" );
1457
1458   return TRUE;
1459 }
1460
1461 /***********************************************************************
1462  *           SetColorSpace     (GDI32.@)
1463  */
1464 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1465 {
1466   FIXME( "stub\n" );
1467
1468   return hColorSpace;
1469 }
1470
1471 /***********************************************************************
1472  *           GetBoundsRect    (GDI32.@)
1473  */
1474 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1475 {
1476     PHYSDEV physdev;
1477     RECT device_rect;
1478     UINT ret;
1479     DC *dc = get_dc_ptr( hdc );
1480
1481     if ( !dc ) return 0;
1482
1483     physdev = GET_DC_PHYSDEV( dc, pGetBoundsRect );
1484     ret = physdev->funcs->pGetBoundsRect( physdev, &device_rect, DCB_RESET );
1485     if (!ret)
1486     {
1487         release_dc_ptr( dc );
1488         return 0;
1489     }
1490     if (dc->bounds_enabled && ret == DCB_SET) add_bounds_rect( &dc->bounds, &device_rect );
1491
1492     if (rect)
1493     {
1494         if (is_rect_empty( &dc->bounds ))
1495         {
1496             rect->left = rect->top = rect->right = rect->bottom = 0;
1497             ret = DCB_RESET;
1498         }
1499         else
1500         {
1501             *rect = dc->bounds;
1502             rect->left   = max( rect->left, 0 );
1503             rect->top    = max( rect->top, 0 );
1504             rect->right  = min( rect->right, dc->vis_rect.right - dc->vis_rect.left );
1505             rect->bottom = min( rect->bottom, dc->vis_rect.bottom - dc->vis_rect.top );
1506             ret = DCB_SET;
1507         }
1508         dp_to_lp( dc, (POINT *)rect, 2 );
1509     }
1510     else ret = 0;
1511
1512     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1513     release_dc_ptr( dc );
1514     return ret;
1515 }
1516
1517
1518 /***********************************************************************
1519  *           SetBoundsRect    (GDI32.@)
1520  */
1521 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1522 {
1523     PHYSDEV physdev;
1524     UINT ret;
1525     DC *dc;
1526
1527     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1528     if (!(dc = get_dc_ptr( hdc ))) return 0;
1529
1530     physdev = GET_DC_PHYSDEV( dc, pSetBoundsRect );
1531     ret = physdev->funcs->pSetBoundsRect( physdev, &dc->bounds, flags );
1532     if (!ret)
1533     {
1534         release_dc_ptr( dc );
1535         return 0;
1536     }
1537
1538     ret = (dc->bounds_enabled ? DCB_ENABLE : DCB_DISABLE) |
1539           (is_rect_empty( &dc->bounds ) ? ret & DCB_SET : DCB_SET);
1540
1541     if (flags & DCB_RESET) reset_bounds( &dc->bounds );
1542
1543     if ((flags & DCB_ACCUMULATE) && rect)
1544     {
1545         RECT rc = *rect;
1546
1547         lp_to_dp( dc, (POINT *)&rc, 2 );
1548         add_bounds_rect( &dc->bounds, &rc );
1549     }
1550
1551     if (flags & DCB_ENABLE) dc->bounds_enabled = TRUE;
1552     if (flags & DCB_DISABLE) dc->bounds_enabled = FALSE;
1553
1554     release_dc_ptr( dc );
1555     return ret;
1556 }
1557
1558
1559 /***********************************************************************
1560  *              GetRelAbs               (GDI32.@)
1561  */
1562 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1563 {
1564     INT ret = 0;
1565     DC *dc = get_dc_ptr( hdc );
1566     if (dc)
1567     {
1568         ret = dc->relAbsMode;
1569         release_dc_ptr( dc );
1570     }
1571     return ret;
1572 }
1573
1574
1575
1576
1577 /***********************************************************************
1578  *              GetBkMode (GDI32.@)
1579  */
1580 INT WINAPI GetBkMode( HDC hdc )
1581 {
1582     INT ret = 0;
1583     DC * dc = get_dc_ptr( hdc );
1584     if (dc)
1585     {
1586         ret = dc->backgroundMode;
1587         release_dc_ptr( dc );
1588     }
1589     return ret;
1590 }
1591
1592
1593 /***********************************************************************
1594  *              SetBkMode (GDI32.@)
1595  */
1596 INT WINAPI SetBkMode( HDC hdc, INT mode )
1597 {
1598     INT ret = 0;
1599     DC *dc;
1600
1601     if ((mode <= 0) || (mode > BKMODE_LAST))
1602     {
1603         SetLastError(ERROR_INVALID_PARAMETER);
1604         return 0;
1605     }
1606     if ((dc = get_dc_ptr( hdc )))
1607     {
1608         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetBkMode );
1609         mode = physdev->funcs->pSetBkMode( physdev, mode );
1610         if (mode)
1611         {
1612             ret = dc->backgroundMode;
1613             dc->backgroundMode = mode;
1614         }
1615         release_dc_ptr( dc );
1616     }
1617     return ret;
1618 }
1619
1620
1621 /***********************************************************************
1622  *              GetROP2 (GDI32.@)
1623  */
1624 INT WINAPI GetROP2( HDC hdc )
1625 {
1626     INT ret = 0;
1627     DC * dc = get_dc_ptr( hdc );
1628     if (dc)
1629     {
1630         ret = dc->ROPmode;
1631         release_dc_ptr( dc );
1632     }
1633     return ret;
1634 }
1635
1636
1637 /***********************************************************************
1638  *              SetROP2 (GDI32.@)
1639  */
1640 INT WINAPI SetROP2( HDC hdc, INT mode )
1641 {
1642     INT ret = 0;
1643     DC *dc;
1644
1645     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1646     {
1647         SetLastError(ERROR_INVALID_PARAMETER);
1648         return 0;
1649     }
1650     if ((dc = get_dc_ptr( hdc )))
1651     {
1652         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetROP2 );
1653         mode = physdev->funcs->pSetROP2( physdev, mode );
1654         if (mode)
1655         {
1656             ret = dc->ROPmode;
1657             dc->ROPmode = mode;
1658         }
1659         release_dc_ptr( dc );
1660     }
1661     return ret;
1662 }
1663
1664
1665 /***********************************************************************
1666  *              SetRelAbs (GDI32.@)
1667  */
1668 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1669 {
1670     INT ret = 0;
1671     DC *dc;
1672
1673     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1674     {
1675         SetLastError(ERROR_INVALID_PARAMETER);
1676         return 0;
1677     }
1678     if ((dc = get_dc_ptr( hdc )))
1679     {
1680         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetRelAbs );
1681         mode = physdev->funcs->pSetRelAbs( physdev, mode );
1682         if (mode)
1683         {
1684             ret = dc->relAbsMode;
1685             dc->relAbsMode = mode;
1686         }
1687         release_dc_ptr( dc );
1688     }
1689     return ret;
1690 }
1691
1692
1693 /***********************************************************************
1694  *              GetPolyFillMode (GDI32.@)
1695  */
1696 INT WINAPI GetPolyFillMode( HDC hdc )
1697 {
1698     INT ret = 0;
1699     DC * dc = get_dc_ptr( hdc );
1700     if (dc)
1701     {
1702         ret = dc->polyFillMode;
1703         release_dc_ptr( dc );
1704     }
1705     return ret;
1706 }
1707
1708
1709 /***********************************************************************
1710  *              SetPolyFillMode (GDI32.@)
1711  */
1712 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1713 {
1714     INT ret = 0;
1715     DC *dc;
1716
1717     if ((mode <= 0) || (mode > POLYFILL_LAST))
1718     {
1719         SetLastError(ERROR_INVALID_PARAMETER);
1720         return 0;
1721     }
1722     if ((dc = get_dc_ptr( hdc )))
1723     {
1724         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetPolyFillMode );
1725         mode = physdev->funcs->pSetPolyFillMode( physdev, mode );
1726         if (mode)
1727         {
1728             ret = dc->polyFillMode;
1729             dc->polyFillMode = mode;
1730         }
1731         release_dc_ptr( dc );
1732     }
1733     return ret;
1734 }
1735
1736
1737 /***********************************************************************
1738  *              GetStretchBltMode (GDI32.@)
1739  */
1740 INT WINAPI GetStretchBltMode( HDC hdc )
1741 {
1742     INT ret = 0;
1743     DC * dc = get_dc_ptr( hdc );
1744     if (dc)
1745     {
1746         ret = dc->stretchBltMode;
1747         release_dc_ptr( dc );
1748     }
1749     return ret;
1750 }
1751
1752
1753 /***********************************************************************
1754  *              SetStretchBltMode (GDI32.@)
1755  */
1756 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1757 {
1758     INT ret = 0;
1759     DC *dc;
1760
1761     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1762     {
1763         SetLastError(ERROR_INVALID_PARAMETER);
1764         return 0;
1765     }
1766     if ((dc = get_dc_ptr( hdc )))
1767     {
1768         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetStretchBltMode );
1769         mode = physdev->funcs->pSetStretchBltMode( physdev, mode );
1770         if (mode)
1771         {
1772             ret = dc->stretchBltMode;
1773             dc->stretchBltMode = mode;
1774         }
1775         release_dc_ptr( dc );
1776     }
1777     return ret;
1778 }
1779
1780
1781 /***********************************************************************
1782  *              GetMapMode (GDI32.@)
1783  */
1784 INT WINAPI GetMapMode( HDC hdc )
1785 {
1786     INT ret = 0;
1787     DC * dc = get_dc_ptr( hdc );
1788     if (dc)
1789     {
1790         ret = dc->MapMode;
1791         release_dc_ptr( dc );
1792     }
1793     return ret;
1794 }
1795
1796
1797 /***********************************************************************
1798  *              GetBrushOrgEx (GDI32.@)
1799  */
1800 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1801 {
1802     DC * dc = get_dc_ptr( hdc );
1803     if (!dc) return FALSE;
1804     *pt = dc->brush_org;
1805     release_dc_ptr( dc );
1806     return TRUE;
1807 }
1808
1809
1810 /***********************************************************************
1811  *              GetCurrentPositionEx (GDI32.@)
1812  */
1813 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1814 {
1815     DC * dc = get_dc_ptr( hdc );
1816     if (!dc) return FALSE;
1817     *pt = dc->cur_pos;
1818     release_dc_ptr( dc );
1819     return TRUE;
1820 }
1821
1822
1823 /***********************************************************************
1824  *              GetViewportExtEx (GDI32.@)
1825  */
1826 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1827 {
1828     DC * dc = get_dc_ptr( hdc );
1829     if (!dc) return FALSE;
1830     *size = dc->vport_ext;
1831     release_dc_ptr( dc );
1832     return TRUE;
1833 }
1834
1835
1836 /***********************************************************************
1837  *              GetViewportOrgEx (GDI32.@)
1838  */
1839 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1840 {
1841     DC * dc = get_dc_ptr( hdc );
1842     if (!dc) return FALSE;
1843     *pt = dc->vport_org;
1844     release_dc_ptr( dc );
1845     return TRUE;
1846 }
1847
1848
1849 /***********************************************************************
1850  *              GetWindowExtEx (GDI32.@)
1851  */
1852 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1853 {
1854     DC * dc = get_dc_ptr( hdc );
1855     if (!dc) return FALSE;
1856     *size = dc->wnd_ext;
1857     release_dc_ptr( dc );
1858     return TRUE;
1859 }
1860
1861
1862 /***********************************************************************
1863  *              GetWindowOrgEx (GDI32.@)
1864  */
1865 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1866 {
1867     DC * dc = get_dc_ptr( hdc );
1868     if (!dc) return FALSE;
1869     *pt = dc->wnd_org;
1870     release_dc_ptr( dc );
1871     return TRUE;
1872 }
1873
1874
1875 /***********************************************************************
1876  *           GetLayout    (GDI32.@)
1877  *
1878  * Gets left->right or right->left text layout flags of a dc.
1879  *
1880  */
1881 DWORD WINAPI GetLayout(HDC hdc)
1882 {
1883     DWORD layout = GDI_ERROR;
1884
1885     DC * dc = get_dc_ptr( hdc );
1886     if (dc)
1887     {
1888         layout = dc->layout;
1889         release_dc_ptr( dc );
1890     }
1891
1892     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1893
1894     return layout;
1895 }
1896
1897 /***********************************************************************
1898  *           SetLayout    (GDI32.@)
1899  *
1900  * Sets left->right or right->left text layout flags of a dc.
1901  *
1902  */
1903 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1904 {
1905     DWORD oldlayout = GDI_ERROR;
1906
1907     DC * dc = get_dc_ptr( hdc );
1908     if (dc)
1909     {
1910         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetLayout );
1911         layout = physdev->funcs->pSetLayout( physdev, layout );
1912         if (layout != GDI_ERROR)
1913         {
1914             oldlayout = dc->layout;
1915             dc->layout = layout;
1916             if (layout != oldlayout)
1917             {
1918                 if (layout & LAYOUT_RTL) dc->MapMode = MM_ANISOTROPIC;
1919                 DC_UpdateXforms( dc );
1920             }
1921         }
1922         release_dc_ptr( dc );
1923     }
1924
1925     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1926
1927     return oldlayout;
1928 }
1929
1930 /***********************************************************************
1931  *           GetDCBrushColor    (GDI32.@)
1932  */
1933 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1934 {
1935     DC *dc;
1936     COLORREF dcBrushColor = CLR_INVALID;
1937
1938     TRACE("hdc(%p)\n", hdc);
1939
1940     dc = get_dc_ptr( hdc );
1941     if (dc)
1942     {
1943         dcBrushColor = dc->dcBrushColor;
1944         release_dc_ptr( dc );
1945     }
1946
1947     return dcBrushColor;
1948 }
1949
1950 /***********************************************************************
1951  *           SetDCBrushColor    (GDI32.@)
1952  */
1953 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1954 {
1955     DC *dc;
1956     COLORREF oldClr = CLR_INVALID;
1957
1958     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1959
1960     dc = get_dc_ptr( hdc );
1961     if (dc)
1962     {
1963         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCBrushColor );
1964         crColor = physdev->funcs->pSetDCBrushColor( physdev, crColor );
1965         if (crColor != CLR_INVALID)
1966         {
1967             oldClr = dc->dcBrushColor;
1968             dc->dcBrushColor = crColor;
1969         }
1970         release_dc_ptr( dc );
1971     }
1972
1973     return oldClr;
1974 }
1975
1976 /***********************************************************************
1977  *           GetDCPenColor    (GDI32.@)
1978  */
1979 COLORREF WINAPI GetDCPenColor(HDC hdc)
1980 {
1981     DC *dc;
1982     COLORREF dcPenColor = CLR_INVALID;
1983
1984     TRACE("hdc(%p)\n", hdc);
1985
1986     dc = get_dc_ptr( hdc );
1987     if (dc)
1988     {
1989         dcPenColor = dc->dcPenColor;
1990         release_dc_ptr( dc );
1991     }
1992
1993     return dcPenColor;
1994 }
1995
1996 /***********************************************************************
1997  *           SetDCPenColor    (GDI32.@)
1998  */
1999 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2000 {
2001     DC *dc;
2002     COLORREF oldClr = CLR_INVALID;
2003
2004     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2005
2006     dc = get_dc_ptr( hdc );
2007     if (dc)
2008     {
2009         PHYSDEV physdev = GET_DC_PHYSDEV( dc, pSetDCPenColor );
2010         crColor = physdev->funcs->pSetDCPenColor( physdev, crColor );
2011         if (crColor != CLR_INVALID)
2012         {
2013             oldClr = dc->dcPenColor;
2014             dc->dcPenColor = crColor;
2015         }
2016         release_dc_ptr( dc );
2017     }
2018
2019     return oldClr;
2020 }
2021
2022 /***********************************************************************
2023  *           CancelDC    (GDI32.@)
2024  */
2025 BOOL WINAPI CancelDC(HDC hdc)
2026 {
2027     FIXME("stub\n");
2028     return TRUE;
2029 }
2030
2031 /*******************************************************************
2032  *      GetMiterLimit [GDI32.@]
2033  *
2034  *
2035  */
2036 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2037 {
2038     BOOL bRet = FALSE;
2039     DC *dc;
2040
2041     TRACE("(%p,%p)\n", hdc, peLimit);
2042
2043     dc = get_dc_ptr( hdc );
2044     if (dc)
2045     {
2046         if (peLimit)
2047             *peLimit = dc->miterLimit;
2048
2049         release_dc_ptr( dc );
2050         bRet = TRUE;
2051     }
2052     return bRet;
2053 }
2054
2055 /*******************************************************************
2056  *      SetMiterLimit [GDI32.@]
2057  *
2058  *
2059  */
2060 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2061 {
2062     BOOL bRet = FALSE;
2063     DC *dc;
2064
2065     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2066
2067     dc = get_dc_ptr( hdc );
2068     if (dc)
2069     {
2070         if (peOldLimit)
2071             *peOldLimit = dc->miterLimit;
2072         dc->miterLimit = eNewLimit;
2073         release_dc_ptr( dc );
2074         bRet = TRUE;
2075     }
2076     return bRet;
2077 }
2078
2079 /*******************************************************************
2080  *      GdiIsMetaPrintDC [GDI32.@]
2081  */
2082 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2083 {
2084     FIXME("%p\n", hdc);
2085     return FALSE;
2086 }
2087
2088 /*******************************************************************
2089  *      GdiIsMetaFileDC [GDI32.@]
2090  */
2091 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2092 {
2093     TRACE("%p\n", hdc);
2094
2095     switch( GetObjectType( hdc ) )
2096     {
2097     case OBJ_METADC:
2098     case OBJ_ENHMETADC:
2099         return TRUE;
2100     }
2101     return FALSE;
2102 }
2103
2104 /*******************************************************************
2105  *      GdiIsPlayMetafileDC [GDI32.@]
2106  */
2107 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2108 {
2109     FIXME("%p\n", hdc);
2110     return FALSE;
2111 }