dlls/gdi32/dc.c

   1 /*
   2  * GDI Device Context functions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include <stdarg.h>
  25 #include <stdlib.h>
  26 #include <string.h>
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "wingdi.h"
  30 #include "winreg.h"
  31 #include "winternl.h"
  32 #include "winerror.h"
  33 #include "wownt32.h"
  34 #include "gdi_private.h"
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(dc);
  39
  40 static const WCHAR displayW[] = { 'd','i','s','p','l','a','y',0 };
  41
  42 static BOOL DC_DeleteObject( HGDIOBJ handle );
  43
  44 static const struct gdi_obj_funcs dc_funcs =
  45 {
  46     NULL,             /* pSelectObject */
  47     NULL,             /* pGetObjectA */
  48     NULL,             /* pGetObjectW */
  49     NULL,             /* pUnrealizeObject */
  50     DC_DeleteObject   /* pDeleteObject */
  51 };
  52
  53
  54 static inline DC *get_dc_obj( HDC hdc )
  55 {
  56     DC *dc = GDI_GetObjPtr( hdc, 0 );
  57     if (!dc) return NULL;
  58
  59     if ((dc->header.type != OBJ_DC) &&
  60         (dc->header.type != OBJ_MEMDC) &&
  61         (dc->header.type != OBJ_METADC) &&
  62         (dc->header.type != OBJ_ENHMETADC))
  63     {
  64         GDI_ReleaseObj( hdc );
  65         SetLastError( ERROR_INVALID_HANDLE );
  66         dc = NULL;
  67     }
  68     return dc;
  69 }
  70
  71
  72 /***********************************************************************
  73  *           alloc_dc_ptr
  74  */
  75 DC *alloc_dc_ptr( const DC_FUNCTIONS *funcs, WORD magic )
  76 {
  77     DC *dc;
  78
  79     if (!(dc = HeapAlloc( GetProcessHeap(), 0, sizeof(*dc) ))) return NULL;
  80
  81     dc->funcs               = funcs;
  82     dc->physDev             = NULL;
  83     dc->thread              = GetCurrentThreadId();
  84     dc->refcount            = 1;
  85     dc->dirty               = 0;
  86     dc->saveLevel           = 0;
  87     dc->saved_dc            = 0;
  88     dc->dwHookData          = 0;
  89     dc->hookProc            = NULL;
  90     dc->wndOrgX             = 0;
  91     dc->wndOrgY             = 0;
  92     dc->wndExtX             = 1;
  93     dc->wndExtY             = 1;
  94     dc->vportOrgX           = 0;
  95     dc->vportOrgY           = 0;
  96     dc->vportExtX           = 1;
  97     dc->vportExtY           = 1;
  98     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  99     dc->flags               = 0;
 100     dc->layout              = 0;
 101     dc->hClipRgn            = 0;
 102     dc->hMetaRgn            = 0;
 103     dc->hMetaClipRgn        = 0;
 104     dc->hVisRgn             = 0;
 105     dc->hPen                = GDI_inc_ref_count( GetStockObject( BLACK_PEN ));
 106     dc->hBrush              = GDI_inc_ref_count( GetStockObject( WHITE_BRUSH ));
 107     dc->hFont               = GDI_inc_ref_count( GetStockObject( SYSTEM_FONT ));
 108     dc->hBitmap             = 0;
 109     dc->hDevice             = 0;
 110     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
 111     dc->gdiFont             = 0;
 112     dc->font_code_page      = CP_ACP;
 113     dc->ROPmode             = R2_COPYPEN;
 114     dc->polyFillMode        = ALTERNATE;
 115     dc->stretchBltMode      = BLACKONWHITE;
 116     dc->relAbsMode          = ABSOLUTE;
 117     dc->backgroundMode      = OPAQUE;
 118     dc->backgroundColor     = RGB( 255, 255, 255 );
 119     dc->dcBrushColor        = RGB( 255, 255, 255 );
 120     dc->dcPenColor          = RGB( 0, 0, 0 );
 121     dc->textColor           = RGB( 0, 0, 0 );
 122     dc->brushOrgX           = 0;
 123     dc->brushOrgY           = 0;
 124     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 125     dc->charExtra           = 0;
 126     dc->breakExtra          = 0;
 127     dc->breakRem            = 0;
 128     dc->MapMode             = MM_TEXT;
 129     dc->GraphicsMode        = GM_COMPATIBLE;
 130     dc->pAbortProc          = NULL;
 131     dc->CursPosX            = 0;
 132     dc->CursPosY            = 0;
 133     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 134     dc->xformWorld2Wnd.eM11 = 1.0f;
 135     dc->xformWorld2Wnd.eM12 = 0.0f;
 136     dc->xformWorld2Wnd.eM21 = 0.0f;
 137     dc->xformWorld2Wnd.eM22 = 1.0f;
 138     dc->xformWorld2Wnd.eDx  = 0.0f;
 139     dc->xformWorld2Wnd.eDy  = 0.0f;
 140     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 141     dc->xformVport2World    = dc->xformWorld2Wnd;
 142     dc->vport2WorldValid    = TRUE;
 143     dc->BoundsRect.left     = 0;
 144     dc->BoundsRect.top      = 0;
 145     dc->BoundsRect.right    = 0;
 146     dc->BoundsRect.bottom   = 0;
 147     PATH_InitGdiPath(&dc->path);
 148
 149     if (!(dc->hSelf = alloc_gdi_handle( &dc->header, magic, &dc_funcs )))
 150     {
 151         HeapFree( GetProcessHeap(), 0, dc );
 152         dc = NULL;
 153     }
 154     return dc;
 155 }
 156
 157
 158
 159 /***********************************************************************
 160  *           free_dc_ptr
 161  */
 162 BOOL free_dc_ptr( DC *dc )
 163 {
 164     assert( dc->refcount == 1 );
 165     if (free_gdi_handle( dc->hSelf ) != dc) return FALSE;  /* shouldn't happen */
 166     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 167     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 168     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 169     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 170     PATH_DestroyGdiPath( &dc->path );
 171     return HeapFree( GetProcessHeap(), 0, dc );
 172 }
 173
 174
 175 /***********************************************************************
 176  *           get_dc_ptr
 177  *
 178  * Retrieve a DC pointer but release the GDI lock.
 179  */
 180 DC *get_dc_ptr( HDC hdc )
 181 {
 182     DC *dc = get_dc_obj( hdc );
 183     if (!dc) return NULL;
 184
 185     if (!InterlockedCompareExchange( &dc->refcount, 1, 0 ))
 186     {
 187         dc->thread = GetCurrentThreadId();
 188     }
 189     else if (dc->thread != GetCurrentThreadId())
 190     {
 191         WARN( "dc %p belongs to thread %04x\n", hdc, dc->thread );
 192         GDI_ReleaseObj( hdc );
 193         return NULL;
 194     }
 195     else InterlockedIncrement( &dc->refcount );
 196
 197     GDI_ReleaseObj( hdc );
 198     return dc;
 199 }
 200
 201
 202 /***********************************************************************
 203  *           release_dc_ptr
 204  */
 205 void release_dc_ptr( DC *dc )
 206 {
 207     LONG ref;
 208
 209     dc->thread = 0;
 210     ref = InterlockedDecrement( &dc->refcount );
 211     assert( ref >= 0 );
 212     if (ref) dc->thread = GetCurrentThreadId();  /* we still own it */
 213 }
 214
 215
 216 /***********************************************************************
 217  *           update_dc
 218  *
 219  * Make sure the DC vis region is up to date.
 220  * This function may call up to USER so the GDI lock should _not_
 221  * be held when calling it.
 222  */
 223 void update_dc( DC *dc )
 224 {
 225     if (InterlockedExchange( &dc->dirty, 0 ) && dc->hookProc)
 226         dc->hookProc( dc->hSelf, DCHC_INVALIDVISRGN, dc->dwHookData, 0 );
 227 }
 228
 229
 230 /***********************************************************************
 231  *           DC_DeleteObject
 232  */
 233 static BOOL DC_DeleteObject( HGDIOBJ handle )
 234 {
 235     return DeleteDC( handle );
 236 }
 237
 238
 239 /***********************************************************************
 240  *           DC_InitDC
 241  *
 242  * Setup device-specific DC values for a newly created DC.
 243  */
 244 void DC_InitDC( DC* dc )
 245 {
 246     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 247     SetTextColor( dc->hSelf, dc->textColor );
 248     SetBkColor( dc->hSelf, dc->backgroundColor );
 249     SelectObject( dc->hSelf, dc->hPen );
 250     SelectObject( dc->hSelf, dc->hBrush );
 251     SelectObject( dc->hSelf, dc->hFont );
 252     CLIPPING_UpdateGCRegion( dc );
 253     SetVirtualResolution( dc->hSelf, 0, 0, 0, 0 );
 254 }
 255
 256
 257 /***********************************************************************
 258  *           DC_InvertXform
 259  *
 260  * Computes the inverse of the transformation xformSrc and stores it to
 261  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 262  * is singular.
 263  */
 264 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 265 {
 266     double determinant;
 267
 268     determinant = xformSrc->eM11*xformSrc->eM22 -
 269         xformSrc->eM12*xformSrc->eM21;
 270     if (determinant > -1e-12 && determinant < 1e-12)
 271         return FALSE;
 272
 273     xformDest->eM11 =  xformSrc->eM22 / determinant;
 274     xformDest->eM12 = -xformSrc->eM12 / determinant;
 275     xformDest->eM21 = -xformSrc->eM21 / determinant;
 276     xformDest->eM22 =  xformSrc->eM11 / determinant;
 277     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 278                        xformSrc->eDy * xformDest->eM21;
 279     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 280                        xformSrc->eDy * xformDest->eM22;
 281
 282     return TRUE;
 283 }
 284
 285 /* Construct a transformation to do the window-to-viewport conversion */
 286 static void construct_window_to_viewport(DC *dc, XFORM *xform)
 287 {
 288     double scaleX, scaleY;
 289     scaleX = (double)dc->vportExtX / (double)dc->wndExtX;
 290     scaleY = (double)dc->vportExtY / (double)dc->wndExtY;
 291
 292     xform->eM11 = scaleX;
 293     xform->eM12 = 0.0;
 294     xform->eM21 = 0.0;
 295     xform->eM22 = scaleY;
 296     xform->eDx  = (double)dc->vportOrgX - scaleX * (double)dc->wndOrgX;
 297     xform->eDy  = (double)dc->vportOrgY - scaleY * (double)dc->wndOrgY;
 298 }
 299
 300 /***********************************************************************
 301  *           DC_UpdateXforms
 302  *
 303  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 304  * fields of the specified DC by creating a transformation that
 305  * represents the current mapping mode and combining it with the DC's
 306  * world transform. This function should be called whenever the
 307  * parameters associated with the mapping mode (window and viewport
 308  * extents and origins) or the world transform change.
 309  */
 310 void DC_UpdateXforms( DC *dc )
 311 {
 312     XFORM xformWnd2Vport, oldworld2vport;
 313
 314     construct_window_to_viewport(dc, &xformWnd2Vport);
 315
 316     oldworld2vport = dc->xformWorld2Vport;
 317     /* Combine with the world transformation */
 318     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 319         &xformWnd2Vport );
 320
 321     /* Create inverse of world-to-viewport transformation */
 322     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 323         &dc->xformVport2World );
 324
 325     /* Reselect the font and pen back into the dc so that the size
 326        gets updated. */
 327     if (memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)) &&
 328         !GdiIsMetaFileDC(dc->hSelf))
 329     {
 330         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 331         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 332     }
 333 }
 334
 335
 336 /***********************************************************************
 337  *           save_dc_state
 338  */
 339 INT save_dc_state( HDC hdc )
 340 {
 341     DC * newdc, * dc;
 342     INT ret;
 343
 344     if (!(dc = get_dc_ptr( hdc ))) return 0;
 345     if (!(newdc = HeapAlloc( GetProcessHeap(), 0, sizeof(*newdc ))))
 346     {
 347       release_dc_ptr( dc );
 348       return 0;
 349     }
 350
 351     newdc->flags            = dc->flags | DC_SAVED;
 352     newdc->layout           = dc->layout;
 353     newdc->hPen             = dc->hPen;
 354     newdc->hBrush           = dc->hBrush;
 355     newdc->hFont            = dc->hFont;
 356     newdc->hBitmap          = dc->hBitmap;
 357     newdc->hDevice          = dc->hDevice;
 358     newdc->hPalette         = dc->hPalette;
 359     newdc->ROPmode          = dc->ROPmode;
 360     newdc->polyFillMode     = dc->polyFillMode;
 361     newdc->stretchBltMode   = dc->stretchBltMode;
 362     newdc->relAbsMode       = dc->relAbsMode;
 363     newdc->backgroundMode   = dc->backgroundMode;
 364     newdc->backgroundColor  = dc->backgroundColor;
 365     newdc->textColor        = dc->textColor;
 366     newdc->dcBrushColor     = dc->dcBrushColor;
 367     newdc->dcPenColor       = dc->dcPenColor;
 368     newdc->brushOrgX        = dc->brushOrgX;
 369     newdc->brushOrgY        = dc->brushOrgY;
 370     newdc->textAlign        = dc->textAlign;
 371     newdc->charExtra        = dc->charExtra;
 372     newdc->breakExtra       = dc->breakExtra;
 373     newdc->breakRem         = dc->breakRem;
 374     newdc->MapMode          = dc->MapMode;
 375     newdc->GraphicsMode     = dc->GraphicsMode;
 376     newdc->CursPosX         = dc->CursPosX;
 377     newdc->CursPosY         = dc->CursPosY;
 378     newdc->ArcDirection     = dc->ArcDirection;
 379     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 380     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 381     newdc->xformVport2World = dc->xformVport2World;
 382     newdc->vport2WorldValid = dc->vport2WorldValid;
 383     newdc->wndOrgX          = dc->wndOrgX;
 384     newdc->wndOrgY          = dc->wndOrgY;
 385     newdc->wndExtX          = dc->wndExtX;
 386     newdc->wndExtY          = dc->wndExtY;
 387     newdc->vportOrgX        = dc->vportOrgX;
 388     newdc->vportOrgY        = dc->vportOrgY;
 389     newdc->vportExtX        = dc->vportExtX;
 390     newdc->vportExtY        = dc->vportExtY;
 391     newdc->virtual_res      = dc->virtual_res;
 392     newdc->virtual_size     = dc->virtual_size;
 393     newdc->BoundsRect       = dc->BoundsRect;
 394     newdc->gdiFont          = dc->gdiFont;
 395
 396     newdc->thread    = GetCurrentThreadId();
 397     newdc->refcount  = 1;
 398     newdc->saveLevel = 0;
 399     newdc->saved_dc  = 0;
 400
 401     PATH_InitGdiPath( &newdc->path );
 402
 403     newdc->pAbortProc = NULL;
 404     newdc->hookProc   = NULL;
 405
 406     if (!(newdc->hSelf = alloc_gdi_handle( &newdc->header, dc->header.type, &dc_funcs )))
 407     {
 408         HeapFree( GetProcessHeap(), 0, newdc );
 409         release_dc_ptr( dc );
 410         return 0;
 411     }
 412
 413     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 414
 415     newdc->hVisRgn      = 0;
 416     newdc->hClipRgn     = 0;
 417     newdc->hMetaRgn     = 0;
 418     newdc->hMetaClipRgn = 0;
 419     if (dc->hClipRgn)
 420     {
 421         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 422         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 423     }
 424     if (dc->hMetaRgn)
 425     {
 426         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 427         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 428     }
 429     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 430
 431     if (!PATH_AssignGdiPath( &newdc->path, &dc->path ))
 432     {
 433         release_dc_ptr( dc );
 434         free_dc_ptr( newdc );
 435         return 0;
 436     }
 437
 438     newdc->saved_dc = dc->saved_dc;
 439     dc->saved_dc = newdc->hSelf;
 440     ret = ++dc->saveLevel;
 441     release_dc_ptr( newdc );
 442     release_dc_ptr( dc );
 443     return ret;
 444 }
 445
 446
 447 /***********************************************************************
 448  *           restore_dc_state
 449  */
 450 BOOL restore_dc_state( HDC hdc, INT level )
 451 {
 452     HDC hdcs, first_dcs;
 453     DC *dc, *dcs;
 454     INT save_level;
 455
 456     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 457
 458     /* find the state level to restore */
 459
 460     if (abs(level) > dc->saveLevel || level == 0)
 461     {
 462         release_dc_ptr( dc );
 463         return FALSE;
 464     }
 465     if (level < 0) level = dc->saveLevel + level + 1;
 466     first_dcs = dc->saved_dc;
 467     for (hdcs = first_dcs, save_level = dc->saveLevel; save_level > level; save_level--)
 468     {
 469         if (!(dcs = get_dc_ptr( hdcs )))
 470         {
 471             release_dc_ptr( dc );
 472             return FALSE;
 473         }
 474         hdcs = dcs->saved_dc;
 475         release_dc_ptr( dcs );
 476     }
 477
 478     /* restore the state */
 479
 480     if (!(dcs = get_dc_ptr( hdcs )))
 481     {
 482         release_dc_ptr( dc );
 483         return FALSE;
 484     }
 485     if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 486     {
 487         release_dc_ptr( dcs );
 488         release_dc_ptr( dc );
 489         return FALSE;
 490     }
 491
 492     dc->flags            = dcs->flags & ~DC_SAVED;
 493     dc->layout           = dcs->layout;
 494     dc->hDevice          = dcs->hDevice;
 495     dc->ROPmode          = dcs->ROPmode;
 496     dc->polyFillMode     = dcs->polyFillMode;
 497     dc->stretchBltMode   = dcs->stretchBltMode;
 498     dc->relAbsMode       = dcs->relAbsMode;
 499     dc->backgroundMode   = dcs->backgroundMode;
 500     dc->backgroundColor  = dcs->backgroundColor;
 501     dc->textColor        = dcs->textColor;
 502     dc->dcBrushColor     = dcs->dcBrushColor;
 503     dc->dcPenColor       = dcs->dcPenColor;
 504     dc->brushOrgX        = dcs->brushOrgX;
 505     dc->brushOrgY        = dcs->brushOrgY;
 506     dc->textAlign        = dcs->textAlign;
 507     dc->charExtra        = dcs->charExtra;
 508     dc->breakExtra       = dcs->breakExtra;
 509     dc->breakRem         = dcs->breakRem;
 510     dc->MapMode          = dcs->MapMode;
 511     dc->GraphicsMode     = dcs->GraphicsMode;
 512     dc->CursPosX         = dcs->CursPosX;
 513     dc->CursPosY         = dcs->CursPosY;
 514     dc->ArcDirection     = dcs->ArcDirection;
 515     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 516     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 517     dc->xformVport2World = dcs->xformVport2World;
 518     dc->vport2WorldValid = dcs->vport2WorldValid;
 519     dc->BoundsRect       = dcs->BoundsRect;
 520
 521     dc->wndOrgX          = dcs->wndOrgX;
 522     dc->wndOrgY          = dcs->wndOrgY;
 523     dc->wndExtX          = dcs->wndExtX;
 524     dc->wndExtY          = dcs->wndExtY;
 525     dc->vportOrgX        = dcs->vportOrgX;
 526     dc->vportOrgY        = dcs->vportOrgY;
 527     dc->vportExtX        = dcs->vportExtX;
 528     dc->vportExtY        = dcs->vportExtY;
 529     dc->virtual_res      = dcs->virtual_res;
 530     dc->virtual_size     = dcs->virtual_size;
 531
 532     if (dcs->hClipRgn)
 533     {
 534         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 535         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 536     }
 537     else
 538     {
 539         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 540         dc->hClipRgn = 0;
 541     }
 542     if (dcs->hMetaRgn)
 543     {
 544         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 545         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 546     }
 547     else
 548     {
 549         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 550         dc->hMetaRgn = 0;
 551     }
 552     CLIPPING_UpdateGCRegion( dc );
 553
 554     SelectObject( hdc, dcs->hBitmap );
 555     SelectObject( hdc, dcs->hBrush );
 556     SelectObject( hdc, dcs->hFont );
 557     SelectObject( hdc, dcs->hPen );
 558     SetBkColor( hdc, dcs->backgroundColor);
 559     SetTextColor( hdc, dcs->textColor);
 560     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 561
 562     dc->saved_dc  = dcs->saved_dc;
 563     dcs->saved_dc = 0;
 564     dc->saveLevel = save_level - 1;
 565
 566     release_dc_ptr( dcs );
 567
 568     /* now destroy all the saved DCs */
 569
 570     while (first_dcs)
 571     {
 572         if (!(dcs = get_dc_ptr( first_dcs ))) break;
 573         hdcs = dcs->saved_dc;
 574         free_dc_ptr( dcs );
 575         first_dcs = hdcs;
 576     }
 577     release_dc_ptr( dc );
 578     return TRUE;
 579 }
 580
 581
 582 /***********************************************************************
 583  *           SaveDC    (GDI32.@)
 584  */
 585 INT WINAPI SaveDC( HDC hdc )
 586 {
 587     DC * dc;
 588     INT ret;
 589
 590     if (!(dc = get_dc_ptr( hdc ))) return 0;
 591
 592     if(dc->funcs->pSaveDC)
 593         ret = dc->funcs->pSaveDC( dc->physDev );
 594     else
 595         ret = save_dc_state( hdc );
 596
 597     release_dc_ptr( dc );
 598     return ret;
 599 }
 600
 601
 602 /***********************************************************************
 603  *           RestoreDC    (GDI32.@)
 604  */
 605 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 606 {
 607     DC *dc;
 608     BOOL success;
 609
 610     TRACE("%p %d\n", hdc, level );
 611     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
 612     update_dc( dc );
 613
 614     if(dc->funcs->pRestoreDC)
 615         success = dc->funcs->pRestoreDC( dc->physDev, level );
 616     else
 617         success = restore_dc_state( hdc, level );
 618
 619     release_dc_ptr( dc );
 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 DC_FUNCTIONS *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( funcs, OBJ_DC ))) goto error;
 653     hdc = dc->hSelf;
 654
 655     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 656     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 657
 658     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 659           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 660
 661     if (dc->funcs->pCreateDC &&
 662         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 663     {
 664         WARN("creation aborted by device\n" );
 665         goto error;
 666     }
 667
 668     SetRectRgn( dc->hVisRgn, 0, 0,
 669                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 670
 671     DC_InitDC( dc );
 672     release_dc_ptr( dc );
 673     return hdc;
 674
 675 error:
 676     if (dc) free_dc_ptr( dc );
 677     return 0;
 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 DC_FUNCTIONS *funcs = NULL;
 748     PHYSDEV physDev = NULL;
 749
 750     GDI_CheckNotLock();
 751
 752     if (hdc)
 753     {
 754         if (!(origDC = get_dc_ptr( hdc ))) return 0;
 755         if (GetObjectType( hdc ) == OBJ_DC)
 756         {
 757             funcs = origDC->funcs;
 758             physDev = origDC->physDev;
 759         }
 760         release_dc_ptr( origDC );
 761     }
 762
 763     if (!funcs && !(funcs = DRIVER_get_display_driver())) return 0;
 764
 765     if (!(dc = alloc_dc_ptr( funcs, OBJ_MEMDC ))) goto error;
 766
 767     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 768
 769     dc->hBitmap = GDI_inc_ref_count( GetStockObject( DEFAULT_BITMAP ));
 770     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 771
 772     /* Copy the driver-specific physical device info into
 773      * the new DC. The driver may use this read-only info
 774      * while creating the compatible DC below. */
 775     dc->physDev = physDev;
 776     ret = dc->hSelf;
 777
 778     if (dc->funcs->pCreateDC &&
 779         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 780     {
 781         WARN("creation aborted by device\n");
 782         goto error;
 783     }
 784
 785     DC_InitDC( dc );
 786     release_dc_ptr( dc );
 787     return ret;
 788
 789 error:
 790     if (dc) free_dc_ptr( dc );
 791     return 0;
 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( hdc, DCHC_DELETEDC, dc->dwHookData, 0 ))
 816     {
 817         release_dc_ptr( dc );
 818         return TRUE;
 819     }
 820
 821     while (dc->saveLevel)
 822     {
 823         DC * dcs;
 824         HDC hdcs = dc->saved_dc;
 825         if (!(dcs = get_dc_ptr( hdcs ))) break;
 826         dc->saved_dc = dcs->saved_dc;
 827         dc->saveLevel--;
 828         free_dc_ptr( dcs );
 829     }
 830
 831     if (!(dc->flags & DC_SAVED))
 832     {
 833         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 834         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 835         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 836         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 837         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 838         dc->physDev = NULL;
 839     }
 840
 841     free_dc_ptr( dc );
 842     return TRUE;
 843 }
 844
 845
 846 /***********************************************************************
 847  *           ResetDCW    (GDI32.@)
 848  */
 849 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 850 {
 851     DC *dc;
 852     HDC ret = hdc;
 853
 854     if ((dc = get_dc_ptr( hdc )))
 855     {
 856         if (dc->funcs->pResetDC)
 857         {
 858             ret = dc->funcs->pResetDC( dc->physDev, devmode );
 859             if (ret)  /* reset the visible region */
 860             {
 861                 dc->dirty = 0;
 862                 SetRectRgn( dc->hVisRgn, 0, 0, GetDeviceCaps( hdc, DESKTOPHORZRES ),
 863                             GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 864                 CLIPPING_UpdateGCRegion( dc );
 865             }
 866         }
 867         release_dc_ptr( dc );
 868     }
 869     return ret;
 870 }
 871
 872
 873 /***********************************************************************
 874  *           ResetDCA    (GDI32.@)
 875  */
 876 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 877 {
 878     DEVMODEW *devmodeW;
 879     HDC ret;
 880
 881     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 882     else devmodeW = NULL;
 883
 884     ret = ResetDCW(hdc, devmodeW);
 885
 886     HeapFree(GetProcessHeap(), 0, devmodeW);
 887     return ret;
 888 }
 889
 890
 891 /***********************************************************************
 892  *           GetDeviceCaps    (GDI32.@)
 893  */
 894 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 895 {
 896     DC *dc;
 897     INT ret = 0;
 898
 899     if ((dc = get_dc_ptr( hdc )))
 900     {
 901         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 902         else switch(cap)  /* return meaningful values for some entries */
 903         {
 904         case HORZRES:     ret = 640; break;
 905         case VERTRES:     ret = 480; break;
 906         case BITSPIXEL:   ret = 1; break;
 907         case PLANES:      ret = 1; break;
 908         case NUMCOLORS:   ret = 2; break;
 909         case ASPECTX:     ret = 36; break;
 910         case ASPECTY:     ret = 36; break;
 911         case ASPECTXY:    ret = 51; break;
 912         case LOGPIXELSX:  ret = 72; break;
 913         case LOGPIXELSY:  ret = 72; break;
 914         case SIZEPALETTE: ret = 2; break;
 915         }
 916         release_dc_ptr( dc );
 917     }
 918     return ret;
 919 }
 920
 921
 922 /***********************************************************************
 923  *              GetBkColor (GDI32.@)
 924  */
 925 COLORREF WINAPI GetBkColor( HDC hdc )
 926 {
 927     COLORREF ret = 0;
 928     DC * dc = get_dc_ptr( hdc );
 929     if (dc)
 930     {
 931         ret = dc->backgroundColor;
 932         release_dc_ptr( dc );
 933     }
 934     return ret;
 935 }
 936
 937
 938 /***********************************************************************
 939  *           SetBkColor    (GDI32.@)
 940  */
 941 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 942 {
 943     COLORREF oldColor;
 944     DC * dc = get_dc_ptr( hdc );
 945
 946     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 947
 948     if (!dc) return CLR_INVALID;
 949     oldColor = dc->backgroundColor;
 950     if (dc->funcs->pSetBkColor)
 951     {
 952         color = dc->funcs->pSetBkColor(dc->physDev, color);
 953         if (color == CLR_INVALID)  /* don't change it */
 954         {
 955             color = oldColor;
 956             oldColor = CLR_INVALID;
 957         }
 958     }
 959     dc->backgroundColor = color;
 960     release_dc_ptr( dc );
 961     return oldColor;
 962 }
 963
 964
 965 /***********************************************************************
 966  *              GetTextColor (GDI32.@)
 967  */
 968 COLORREF WINAPI GetTextColor( HDC hdc )
 969 {
 970     COLORREF ret = 0;
 971     DC * dc = get_dc_ptr( hdc );
 972     if (dc)
 973     {
 974         ret = dc->textColor;
 975         release_dc_ptr( dc );
 976     }
 977     return ret;
 978 }
 979
 980
 981 /***********************************************************************
 982  *           SetTextColor    (GDI32.@)
 983  */
 984 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 985 {
 986     COLORREF oldColor;
 987     DC * dc = get_dc_ptr( hdc );
 988
 989     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 990
 991     if (!dc) return CLR_INVALID;
 992     oldColor = dc->textColor;
 993     if (dc->funcs->pSetTextColor)
 994     {
 995         color = dc->funcs->pSetTextColor(dc->physDev, color);
 996         if (color == CLR_INVALID)  /* don't change it */
 997         {
 998             color = oldColor;
 999             oldColor = CLR_INVALID;
1000         }
1001     }
1002     dc->textColor = color;
1003     release_dc_ptr( dc );
1004     return oldColor;
1005 }
1006
1007
1008 /***********************************************************************
1009  *              GetTextAlign (GDI32.@)
1010  */
1011 UINT WINAPI GetTextAlign( HDC hdc )
1012 {
1013     UINT ret = 0;
1014     DC * dc = get_dc_ptr( hdc );
1015     if (dc)
1016     {
1017         ret = dc->textAlign;
1018         release_dc_ptr( dc );
1019     }
1020     return ret;
1021 }
1022
1023
1024 /***********************************************************************
1025  *           SetTextAlign    (GDI32.@)
1026  */
1027 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1028 {
1029     UINT ret;
1030     DC *dc = get_dc_ptr( hdc );
1031
1032     TRACE("hdc=%p align=%d\n", hdc, align);
1033
1034     if (!dc) return 0x0;
1035     ret = dc->textAlign;
1036     if (dc->funcs->pSetTextAlign)
1037         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1038             ret = GDI_ERROR;
1039     if (ret != GDI_ERROR)
1040         dc->textAlign = align;
1041     release_dc_ptr( dc );
1042     return ret;
1043 }
1044
1045 /***********************************************************************
1046  *           GetDCOrgEx  (GDI32.@)
1047  */
1048 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1049 {
1050     DC * dc;
1051
1052     if (!lpp) return FALSE;
1053     if (!(dc = get_dc_ptr( hDC ))) return FALSE;
1054
1055     lpp->x = lpp->y = 0;
1056     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1057     release_dc_ptr( dc );
1058     return TRUE;
1059 }
1060
1061
1062 /***********************************************************************
1063  *              GetGraphicsMode (GDI32.@)
1064  */
1065 INT WINAPI GetGraphicsMode( HDC hdc )
1066 {
1067     INT ret = 0;
1068     DC * dc = get_dc_ptr( hdc );
1069     if (dc)
1070     {
1071         ret = dc->GraphicsMode;
1072         release_dc_ptr( dc );
1073     }
1074     return ret;
1075 }
1076
1077
1078 /***********************************************************************
1079  *           SetGraphicsMode    (GDI32.@)
1080  */
1081 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1082 {
1083     INT ret = 0;
1084     DC *dc = get_dc_ptr( hdc );
1085
1086     /* One would think that setting the graphics mode to GM_COMPATIBLE
1087      * would also reset the world transformation matrix to the unity
1088      * matrix. However, in Windows, this is not the case. This doesn't
1089      * make a lot of sense to me, but that's the way it is.
1090      */
1091     if (!dc) return 0;
1092     if ((mode > 0) && (mode <= GM_LAST))
1093     {
1094         ret = dc->GraphicsMode;
1095         dc->GraphicsMode = mode;
1096     }
1097     release_dc_ptr( dc );
1098     return ret;
1099 }
1100
1101
1102 /***********************************************************************
1103  *              GetArcDirection (GDI32.@)
1104  */
1105 INT WINAPI GetArcDirection( HDC hdc )
1106 {
1107     INT ret = 0;
1108     DC * dc = get_dc_ptr( hdc );
1109     if (dc)
1110     {
1111         ret = dc->ArcDirection;
1112         release_dc_ptr( dc );
1113     }
1114     return ret;
1115 }
1116
1117
1118 /***********************************************************************
1119  *           SetArcDirection    (GDI32.@)
1120  */
1121 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1122 {
1123     DC * dc;
1124     INT nOldDirection = 0;
1125
1126     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1127     {
1128         SetLastError(ERROR_INVALID_PARAMETER);
1129         return 0;
1130     }
1131
1132     if ((dc = get_dc_ptr( hdc )))
1133     {
1134         if (dc->funcs->pSetArcDirection)
1135         {
1136             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1137         }
1138         nOldDirection = dc->ArcDirection;
1139         dc->ArcDirection = nDirection;
1140         release_dc_ptr( dc );
1141     }
1142     return nOldDirection;
1143 }
1144
1145
1146 /***********************************************************************
1147  *           GetWorldTransform    (GDI32.@)
1148  */
1149 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1150 {
1151     DC * dc;
1152     if (!xform) return FALSE;
1153     if (!(dc = get_dc_ptr( hdc ))) return FALSE;
1154     *xform = dc->xformWorld2Wnd;
1155     release_dc_ptr( dc );
1156     return TRUE;
1157 }
1158
1159
1160 /***********************************************************************
1161  *           GetTransform    (GDI32.@)
1162  *
1163  * Undocumented
1164  *
1165  * Returns one of the co-ordinate space transforms
1166  *
1167  * PARAMS
1168  *    hdc   [I] Device context.
1169  *    which [I] Which xform to return:
1170  *                  0x203 World -> Page transform (that set by SetWorldTransform).
1171  *                  0x304 Page -> Device transform (the mapping mode transform).
1172  *                  0x204 World -> Device transform (the combination of the above two).
1173  *                  0x402 Device -> World transform (the inversion of the above).
1174  *    xform [O] The xform.
1175  *
1176  */
1177 BOOL WINAPI GetTransform( HDC hdc, DWORD which, XFORM *xform )
1178 {
1179     BOOL ret = TRUE;
1180     DC *dc = get_dc_ptr( hdc );
1181     if (!dc) return FALSE;
1182
1183     switch(which)
1184     {
1185     case 0x203:
1186         *xform = dc->xformWorld2Wnd;
1187         break;
1188
1189     case 0x304:
1190         construct_window_to_viewport(dc, xform);
1191         break;
1192
1193     case 0x204:
1194         *xform = dc->xformWorld2Vport;
1195         break;
1196
1197     case 0x402:
1198         *xform = dc->xformVport2World;
1199         break;
1200
1201     default:
1202         FIXME("Unknown code %x\n", which);
1203         ret = FALSE;
1204     }
1205
1206     release_dc_ptr( dc );
1207     return ret;
1208 }
1209
1210
1211 /***********************************************************************
1212  *           SetWorldTransform    (GDI32.@)
1213  */
1214 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1215 {
1216     BOOL ret = FALSE;
1217     DC *dc;
1218
1219     if (!xform) return FALSE;
1220
1221     dc = get_dc_ptr( hdc );
1222     if (!dc) return FALSE;
1223
1224     /* Check that graphics mode is GM_ADVANCED */
1225     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1226
1227     TRACE("eM11 %f eM12 %f eM21 %f eM22 %f eDx %f eDy %f\n",
1228         xform->eM11, xform->eM12, xform->eM21, xform->eM22, xform->eDx, xform->eDy);
1229
1230     /* The transform must conform to (eM11 * eM22 != eM12 * eM21) requirement */
1231     if (xform->eM11 * xform->eM22 == xform->eM12 * xform->eM21) goto done;
1232
1233     if (dc->funcs->pSetWorldTransform)
1234     {
1235         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1236         if (!ret) goto done;
1237     }
1238
1239     dc->xformWorld2Wnd = *xform;
1240     DC_UpdateXforms( dc );
1241     ret = TRUE;
1242  done:
1243     release_dc_ptr( dc );
1244     return ret;
1245 }
1246
1247
1248 /****************************************************************************
1249  * ModifyWorldTransform [GDI32.@]
1250  * Modifies the world transformation for a device context.
1251  *
1252  * PARAMS
1253  *    hdc   [I] Handle to device context
1254  *    xform [I] XFORM structure that will be used to modify the world
1255  *              transformation
1256  *    iMode [I] Specifies in what way to modify the world transformation
1257  *              Possible values:
1258  *              MWT_IDENTITY
1259  *                 Resets the world transformation to the identity matrix.
1260  *                 The parameter xform is ignored.
1261  *              MWT_LEFTMULTIPLY
1262  *                 Multiplies xform into the world transformation matrix from
1263  *                 the left.
1264  *              MWT_RIGHTMULTIPLY
1265  *                 Multiplies xform into the world transformation matrix from
1266  *                 the right.
1267  *
1268  * RETURNS
1269  *  Success: TRUE.
1270  *  Failure: FALSE. Use GetLastError() to determine the cause.
1271  */
1272 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1273     DWORD iMode )
1274 {
1275     BOOL ret = FALSE;
1276     DC *dc = get_dc_ptr( hdc );
1277
1278     /* Check for illegal parameters */
1279     if (!dc) return FALSE;
1280     if (!xform && iMode != MWT_IDENTITY) goto done;
1281
1282     /* Check that graphics mode is GM_ADVANCED */
1283     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1284
1285     if (dc->funcs->pModifyWorldTransform)
1286     {
1287         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1288         if (!ret) goto done;
1289     }
1290
1291     switch (iMode)
1292     {
1293         case MWT_IDENTITY:
1294             dc->xformWorld2Wnd.eM11 = 1.0f;
1295             dc->xformWorld2Wnd.eM12 = 0.0f;
1296             dc->xformWorld2Wnd.eM21 = 0.0f;
1297             dc->xformWorld2Wnd.eM22 = 1.0f;
1298             dc->xformWorld2Wnd.eDx  = 0.0f;
1299             dc->xformWorld2Wnd.eDy  = 0.0f;
1300             break;
1301         case MWT_LEFTMULTIPLY:
1302             CombineTransform( &dc->xformWorld2Wnd, xform,
1303                 &dc->xformWorld2Wnd );
1304             break;
1305         case MWT_RIGHTMULTIPLY:
1306             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1307                 xform );
1308             break;
1309         default:
1310             goto done;
1311     }
1312
1313     DC_UpdateXforms( dc );
1314     ret = TRUE;
1315  done:
1316     release_dc_ptr( dc );
1317     return ret;
1318 }
1319
1320
1321 /****************************************************************************
1322  * CombineTransform [GDI32.@]
1323  * Combines two transformation matrices.
1324  *
1325  * PARAMS
1326  *    xformResult [O] Stores the result of combining the two matrices
1327  *    xform1      [I] Specifies the first matrix to apply
1328  *    xform2      [I] Specifies the second matrix to apply
1329  *
1330  * REMARKS
1331  *    The same matrix can be passed in for more than one of the parameters.
1332  *
1333  * RETURNS
1334  *  Success: TRUE.
1335  *  Failure: FALSE. Use GetLastError() to determine the cause.
1336  */
1337 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1338     const XFORM *xform2 )
1339 {
1340     XFORM xformTemp;
1341
1342     /* Check for illegal parameters */
1343     if (!xformResult || !xform1 || !xform2)
1344         return FALSE;
1345
1346     /* Create the result in a temporary XFORM, since xformResult may be
1347      * equal to xform1 or xform2 */
1348     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1349                      xform1->eM12 * xform2->eM21;
1350     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1351                      xform1->eM12 * xform2->eM22;
1352     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1353                      xform1->eM22 * xform2->eM21;
1354     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1355                      xform1->eM22 * xform2->eM22;
1356     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1357                      xform1->eDy  * xform2->eM21 +
1358                      xform2->eDx;
1359     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1360                      xform1->eDy  * xform2->eM22 +
1361                      xform2->eDy;
1362
1363     /* Copy the result to xformResult */
1364     *xformResult = xformTemp;
1365
1366     return TRUE;
1367 }
1368
1369
1370 /***********************************************************************
1371  *           SetDCHook   (GDI32.@)
1372  *
1373  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1374  */
1375 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1376 {
1377     DC *dc = get_dc_ptr( hdc );
1378
1379     if (!dc) return FALSE;
1380
1381     if (!(dc->flags & DC_SAVED))
1382     {
1383         dc->dwHookData = dwHookData;
1384         dc->hookProc = hookProc;
1385     }
1386     release_dc_ptr( dc );
1387     return TRUE;
1388 }
1389
1390
1391 /***********************************************************************
1392  *           GetDCHook   (GDI32.@)
1393  *
1394  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1395  */
1396 DWORD_PTR WINAPI GetDCHook( HDC hdc, DCHOOKPROC *proc )
1397 {
1398     DC *dc = get_dc_ptr( hdc );
1399     DWORD_PTR ret;
1400
1401     if (!dc) return 0;
1402     if (proc) *proc = dc->hookProc;
1403     ret = dc->dwHookData;
1404     release_dc_ptr( dc );
1405     return ret;
1406 }
1407
1408
1409 /***********************************************************************
1410  *           SetHookFlags   (GDI32.@)
1411  *
1412  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1413  */
1414 WORD WINAPI SetHookFlags( HDC hdc, WORD flags )
1415 {
1416     DC *dc = get_dc_obj( hdc );  /* not get_dc_ptr, this needs to work from any thread */
1417     LONG ret = 0;
1418
1419     if (!dc) return 0;
1420
1421     /* "Undocumented Windows" info is slightly confusing. */
1422
1423     TRACE("hDC %p, flags %04x\n",hdc,flags);
1424
1425     if (flags & DCHF_INVALIDATEVISRGN)
1426         ret = InterlockedExchange( &dc->dirty, 1 );
1427     else if (flags & DCHF_VALIDATEVISRGN || !flags)
1428         ret = InterlockedExchange( &dc->dirty, 0 );
1429
1430     GDI_ReleaseObj( dc );
1431     return ret;
1432 }
1433
1434 /***********************************************************************
1435  *           SetICMMode    (GDI32.@)
1436  */
1437 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1438 {
1439 /*FIXME:  Assume that ICM is always off, and cannot be turned on */
1440     if (iEnableICM == ICM_OFF) return ICM_OFF;
1441     if (iEnableICM == ICM_ON) return 0;
1442     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1443     return 0;
1444 }
1445
1446 /***********************************************************************
1447  *           GetDeviceGammaRamp    (GDI32.@)
1448  */
1449 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1450 {
1451     BOOL ret = FALSE;
1452     DC *dc = get_dc_ptr( hDC );
1453
1454     if( dc )
1455     {
1456         if (dc->funcs->pGetDeviceGammaRamp)
1457             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1458         release_dc_ptr( dc );
1459     }
1460     return ret;
1461 }
1462
1463 /***********************************************************************
1464  *           SetDeviceGammaRamp    (GDI32.@)
1465  */
1466 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1467 {
1468     BOOL ret = FALSE;
1469     DC *dc = get_dc_ptr( hDC );
1470
1471     if( dc )
1472     {
1473         if (dc->funcs->pSetDeviceGammaRamp)
1474             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1475         release_dc_ptr( dc );
1476     }
1477     return ret;
1478 }
1479
1480 /***********************************************************************
1481  *           GetColorSpace    (GDI32.@)
1482  */
1483 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1484 {
1485 /*FIXME    Need to to whatever GetColorSpace actually does */
1486     return 0;
1487 }
1488
1489 /***********************************************************************
1490  *           CreateColorSpaceA    (GDI32.@)
1491  */
1492 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1493 {
1494   FIXME( "stub\n" );
1495   return 0;
1496 }
1497
1498 /***********************************************************************
1499  *           CreateColorSpaceW    (GDI32.@)
1500  */
1501 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1502 {
1503   FIXME( "stub\n" );
1504   return 0;
1505 }
1506
1507 /***********************************************************************
1508  *           DeleteColorSpace     (GDI32.@)
1509  */
1510 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1511 {
1512   FIXME( "stub\n" );
1513
1514   return TRUE;
1515 }
1516
1517 /***********************************************************************
1518  *           SetColorSpace     (GDI32.@)
1519  */
1520 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1521 {
1522   FIXME( "stub\n" );
1523
1524   return hColorSpace;
1525 }
1526
1527 /***********************************************************************
1528  *           GetBoundsRect    (GDI32.@)
1529  */
1530 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1531 {
1532     UINT ret;
1533     DC *dc = get_dc_ptr( hdc );
1534
1535     if ( !dc ) return 0;
1536
1537     if (rect)
1538     {
1539         *rect = dc->BoundsRect;
1540         ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1541     }
1542     else
1543         ret = 0;
1544
1545     if (flags & DCB_RESET)
1546     {
1547         dc->BoundsRect.left   = 0;
1548         dc->BoundsRect.top    = 0;
1549         dc->BoundsRect.right  = 0;
1550         dc->BoundsRect.bottom = 0;
1551         dc->flags &= ~DC_BOUNDS_SET;
1552     }
1553     release_dc_ptr( dc );
1554     return ret;
1555 }
1556
1557
1558 /***********************************************************************
1559  *           SetBoundsRect    (GDI32.@)
1560  */
1561 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1562 {
1563     UINT ret;
1564     DC *dc;
1565
1566     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1567     if (!(dc = get_dc_ptr( hdc ))) return 0;
1568
1569     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1570           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1571
1572     if (flags & DCB_RESET)
1573     {
1574         dc->BoundsRect.left   = 0;
1575         dc->BoundsRect.top    = 0;
1576         dc->BoundsRect.right  = 0;
1577         dc->BoundsRect.bottom = 0;
1578         dc->flags &= ~DC_BOUNDS_SET;
1579     }
1580
1581     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1582     {
1583         if (dc->flags & DC_BOUNDS_SET)
1584         {
1585             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1586             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1587             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1588             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1589         }
1590         else
1591         {
1592             dc->BoundsRect = *rect;
1593             dc->flags |= DC_BOUNDS_SET;
1594         }
1595     }
1596
1597     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1598     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1599
1600     release_dc_ptr( dc );
1601     return ret;
1602 }
1603
1604
1605 /***********************************************************************
1606  *              GetRelAbs               (GDI32.@)
1607  */
1608 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1609 {
1610     INT ret = 0;
1611     DC *dc = get_dc_ptr( hdc );
1612     if (dc)
1613     {
1614         ret = dc->relAbsMode;
1615         release_dc_ptr( dc );
1616     }
1617     return ret;
1618 }
1619
1620
1621
1622
1623 /***********************************************************************
1624  *              GetBkMode (GDI32.@)
1625  */
1626 INT WINAPI GetBkMode( HDC hdc )
1627 {
1628     INT ret = 0;
1629     DC * dc = get_dc_ptr( hdc );
1630     if (dc)
1631     {
1632         ret = dc->backgroundMode;
1633         release_dc_ptr( dc );
1634     }
1635     return ret;
1636 }
1637
1638
1639 /***********************************************************************
1640  *              SetBkMode (GDI32.@)
1641  */
1642 INT WINAPI SetBkMode( HDC hdc, INT mode )
1643 {
1644     INT ret;
1645     DC *dc;
1646     if ((mode <= 0) || (mode > BKMODE_LAST))
1647     {
1648         SetLastError(ERROR_INVALID_PARAMETER);
1649         return 0;
1650     }
1651     if (!(dc = get_dc_ptr( hdc ))) return 0;
1652
1653     ret = dc->backgroundMode;
1654     if (dc->funcs->pSetBkMode)
1655         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1656             ret = 0;
1657     if (ret)
1658         dc->backgroundMode = mode;
1659     release_dc_ptr( dc );
1660     return ret;
1661 }
1662
1663
1664 /***********************************************************************
1665  *              GetROP2 (GDI32.@)
1666  */
1667 INT WINAPI GetROP2( HDC hdc )
1668 {
1669     INT ret = 0;
1670     DC * dc = get_dc_ptr( hdc );
1671     if (dc)
1672     {
1673         ret = dc->ROPmode;
1674         release_dc_ptr( dc );
1675     }
1676     return ret;
1677 }
1678
1679
1680 /***********************************************************************
1681  *              SetROP2 (GDI32.@)
1682  */
1683 INT WINAPI SetROP2( HDC hdc, INT mode )
1684 {
1685     INT ret;
1686     DC *dc;
1687     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1688     {
1689         SetLastError(ERROR_INVALID_PARAMETER);
1690         return 0;
1691     }
1692     if (!(dc = get_dc_ptr( hdc ))) return 0;
1693     ret = dc->ROPmode;
1694     if (dc->funcs->pSetROP2)
1695         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1696             ret = 0;
1697     if (ret)
1698         dc->ROPmode = mode;
1699     release_dc_ptr( dc );
1700     return ret;
1701 }
1702
1703
1704 /***********************************************************************
1705  *              SetRelAbs (GDI32.@)
1706  */
1707 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1708 {
1709     INT ret;
1710     DC *dc;
1711     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1712     {
1713         SetLastError(ERROR_INVALID_PARAMETER);
1714         return 0;
1715     }
1716     if (!(dc = get_dc_ptr( hdc ))) return 0;
1717     if (dc->funcs->pSetRelAbs)
1718         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1719     else
1720     {
1721         ret = dc->relAbsMode;
1722         dc->relAbsMode = mode;
1723     }
1724     release_dc_ptr( dc );
1725     return ret;
1726 }
1727
1728
1729 /***********************************************************************
1730  *              GetPolyFillMode (GDI32.@)
1731  */
1732 INT WINAPI GetPolyFillMode( HDC hdc )
1733 {
1734     INT ret = 0;
1735     DC * dc = get_dc_ptr( hdc );
1736     if (dc)
1737     {
1738         ret = dc->polyFillMode;
1739         release_dc_ptr( dc );
1740     }
1741     return ret;
1742 }
1743
1744
1745 /***********************************************************************
1746  *              SetPolyFillMode (GDI32.@)
1747  */
1748 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1749 {
1750     INT ret;
1751     DC *dc;
1752     if ((mode <= 0) || (mode > POLYFILL_LAST))
1753     {
1754         SetLastError(ERROR_INVALID_PARAMETER);
1755         return 0;
1756     }
1757     if (!(dc = get_dc_ptr( hdc ))) return 0;
1758     ret = dc->polyFillMode;
1759     if (dc->funcs->pSetPolyFillMode)
1760         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1761             ret = 0;
1762     if (ret)
1763         dc->polyFillMode = mode;
1764     release_dc_ptr( dc );
1765     return ret;
1766 }
1767
1768
1769 /***********************************************************************
1770  *              GetStretchBltMode (GDI32.@)
1771  */
1772 INT WINAPI GetStretchBltMode( HDC hdc )
1773 {
1774     INT ret = 0;
1775     DC * dc = get_dc_ptr( hdc );
1776     if (dc)
1777     {
1778         ret = dc->stretchBltMode;
1779         release_dc_ptr( dc );
1780     }
1781     return ret;
1782 }
1783
1784
1785 /***********************************************************************
1786  *              SetStretchBltMode (GDI32.@)
1787  */
1788 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1789 {
1790     INT ret;
1791     DC *dc;
1792     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1793     {
1794         SetLastError(ERROR_INVALID_PARAMETER);
1795         return 0;
1796     }
1797     if (!(dc = get_dc_ptr( hdc ))) return 0;
1798     ret = dc->stretchBltMode;
1799     if (dc->funcs->pSetStretchBltMode)
1800         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1801             ret = 0;
1802     if (ret)
1803         dc->stretchBltMode = mode;
1804     release_dc_ptr( dc );
1805     return ret;
1806 }
1807
1808
1809 /***********************************************************************
1810  *              GetMapMode (GDI32.@)
1811  */
1812 INT WINAPI GetMapMode( HDC hdc )
1813 {
1814     INT ret = 0;
1815     DC * dc = get_dc_ptr( hdc );
1816     if (dc)
1817     {
1818         ret = dc->MapMode;
1819         release_dc_ptr( dc );
1820     }
1821     return ret;
1822 }
1823
1824
1825 /***********************************************************************
1826  *              GetBrushOrgEx (GDI32.@)
1827  */
1828 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1829 {
1830     DC * dc = get_dc_ptr( hdc );
1831     if (!dc) return FALSE;
1832     pt->x = dc->brushOrgX;
1833     pt->y = dc->brushOrgY;
1834     release_dc_ptr( dc );
1835     return TRUE;
1836 }
1837
1838
1839 /***********************************************************************
1840  *              GetCurrentPositionEx (GDI32.@)
1841  */
1842 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1843 {
1844     DC * dc = get_dc_ptr( hdc );
1845     if (!dc) return FALSE;
1846     pt->x = dc->CursPosX;
1847     pt->y = dc->CursPosY;
1848     release_dc_ptr( dc );
1849     return TRUE;
1850 }
1851
1852
1853 /***********************************************************************
1854  *              GetViewportExtEx (GDI32.@)
1855  */
1856 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1857 {
1858     DC * dc = get_dc_ptr( hdc );
1859     if (!dc) return FALSE;
1860     size->cx = dc->vportExtX;
1861     size->cy = dc->vportExtY;
1862     release_dc_ptr( dc );
1863     return TRUE;
1864 }
1865
1866
1867 /***********************************************************************
1868  *              GetViewportOrgEx (GDI32.@)
1869  */
1870 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1871 {
1872     DC * dc = get_dc_ptr( hdc );
1873     if (!dc) return FALSE;
1874     pt->x = dc->vportOrgX;
1875     pt->y = dc->vportOrgY;
1876     release_dc_ptr( dc );
1877     return TRUE;
1878 }
1879
1880
1881 /***********************************************************************
1882  *              GetWindowExtEx (GDI32.@)
1883  */
1884 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1885 {
1886     DC * dc = get_dc_ptr( hdc );
1887     if (!dc) return FALSE;
1888     size->cx = dc->wndExtX;
1889     size->cy = dc->wndExtY;
1890     release_dc_ptr( dc );
1891     return TRUE;
1892 }
1893
1894
1895 /***********************************************************************
1896  *              GetWindowOrgEx (GDI32.@)
1897  */
1898 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1899 {
1900     DC * dc = get_dc_ptr( hdc );
1901     if (!dc) return FALSE;
1902     pt->x = dc->wndOrgX;
1903     pt->y = dc->wndOrgY;
1904     release_dc_ptr( dc );
1905     return TRUE;
1906 }
1907
1908
1909 /***********************************************************************
1910  *           GetLayout    (GDI32.@)
1911  *
1912  * Gets left->right or right->left text layout flags of a dc.
1913  *
1914  */
1915 DWORD WINAPI GetLayout(HDC hdc)
1916 {
1917     DWORD layout = GDI_ERROR;
1918
1919     DC * dc = get_dc_ptr( hdc );
1920     if (dc)
1921     {
1922         layout = dc->layout;
1923         release_dc_ptr( dc );
1924     }
1925
1926     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1927
1928     return layout;
1929 }
1930
1931 /***********************************************************************
1932  *           SetLayout    (GDI32.@)
1933  *
1934  * Sets left->right or right->left text layout flags of a dc.
1935  *
1936  */
1937 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1938 {
1939     DWORD oldlayout = GDI_ERROR;
1940
1941     DC * dc = get_dc_ptr( hdc );
1942     if (dc)
1943     {
1944         oldlayout = dc->layout;
1945         dc->layout = layout;
1946         release_dc_ptr( dc );
1947     }
1948
1949     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1950
1951     return oldlayout;
1952 }
1953
1954 /***********************************************************************
1955  *           GetDCBrushColor    (GDI32.@)
1956  *
1957  * Retrieves the current brush color for the specified device
1958  * context (DC).
1959  *
1960  */
1961 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1962 {
1963     DC *dc;
1964     COLORREF dcBrushColor = CLR_INVALID;
1965
1966     TRACE("hdc(%p)\n", hdc);
1967
1968     dc = get_dc_ptr( hdc );
1969     if (dc)
1970     {
1971         dcBrushColor = dc->dcBrushColor;
1972         release_dc_ptr( dc );
1973     }
1974
1975     return dcBrushColor;
1976 }
1977
1978 /***********************************************************************
1979  *           SetDCBrushColor    (GDI32.@)
1980  *
1981  * Sets the current device context (DC) brush color to the specified
1982  * color value. If the device cannot represent the specified color
1983  * value, the color is set to the nearest physical color.
1984  *
1985  */
1986 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
1987 {
1988     DC *dc;
1989     COLORREF oldClr = CLR_INVALID;
1990
1991     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
1992
1993     dc = get_dc_ptr( hdc );
1994     if (dc)
1995     {
1996         if (dc->funcs->pSetDCBrushColor)
1997             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
1998         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
1999         {
2000             /* If DC_BRUSH is selected, update driver pen color */
2001             HBRUSH hBrush = CreateSolidBrush( crColor );
2002             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2003             DeleteObject( hBrush );
2004         }
2005
2006         if (crColor != CLR_INVALID)
2007         {
2008             oldClr = dc->dcBrushColor;
2009             dc->dcBrushColor = crColor;
2010         }
2011
2012         release_dc_ptr( dc );
2013     }
2014
2015     return oldClr;
2016 }
2017
2018 /***********************************************************************
2019  *           GetDCPenColor    (GDI32.@)
2020  *
2021  * Retrieves the current pen color for the specified device
2022  * context (DC).
2023  *
2024  */
2025 COLORREF WINAPI GetDCPenColor(HDC hdc)
2026 {
2027     DC *dc;
2028     COLORREF dcPenColor = CLR_INVALID;
2029
2030     TRACE("hdc(%p)\n", hdc);
2031
2032     dc = get_dc_ptr( hdc );
2033     if (dc)
2034     {
2035         dcPenColor = dc->dcPenColor;
2036         release_dc_ptr( dc );
2037     }
2038
2039     return dcPenColor;
2040 }
2041
2042 /***********************************************************************
2043  *           SetDCPenColor    (GDI32.@)
2044  *
2045  * Sets the current device context (DC) pen color to the specified
2046  * color value. If the device cannot represent the specified color
2047  * value, the color is set to the nearest physical color.
2048  *
2049  */
2050 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2051 {
2052     DC *dc;
2053     COLORREF oldClr = CLR_INVALID;
2054
2055     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2056
2057     dc = get_dc_ptr( hdc );
2058     if (dc)
2059     {
2060         if (dc->funcs->pSetDCPenColor)
2061             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2062         else if (dc->hPen == GetStockObject( DC_PEN ))
2063         {
2064             /* If DC_PEN is selected, update the driver pen color */
2065             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2066             HPEN hPen = CreatePenIndirect( &logpen );
2067             dc->funcs->pSelectPen( dc->physDev, hPen );
2068             DeleteObject( hPen );
2069         }
2070
2071         if (crColor != CLR_INVALID)
2072         {
2073             oldClr = dc->dcPenColor;
2074             dc->dcPenColor = crColor;
2075         }
2076
2077         release_dc_ptr( dc );
2078     }
2079
2080     return oldClr;
2081 }
2082
2083 /***********************************************************************
2084  *           CancelDC    (GDI32.@)
2085  */
2086 BOOL WINAPI CancelDC(HDC hdc)
2087 {
2088     FIXME("stub\n");
2089     return TRUE;
2090 }
2091
2092 /*******************************************************************
2093  *      GetMiterLimit [GDI32.@]
2094  *
2095  *
2096  */
2097 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2098 {
2099     BOOL bRet = FALSE;
2100     DC *dc;
2101
2102     TRACE("(%p,%p)\n", hdc, peLimit);
2103
2104     dc = get_dc_ptr( hdc );
2105     if (dc)
2106     {
2107         if (peLimit)
2108             *peLimit = dc->miterLimit;
2109
2110         release_dc_ptr( dc );
2111         bRet = TRUE;
2112     }
2113     return bRet;
2114 }
2115
2116 /*******************************************************************
2117  *      SetMiterLimit [GDI32.@]
2118  *
2119  *
2120  */
2121 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2122 {
2123     BOOL bRet = FALSE;
2124     DC *dc;
2125
2126     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2127
2128     dc = get_dc_ptr( hdc );
2129     if (dc)
2130     {
2131         if (peOldLimit)
2132             *peOldLimit = dc->miterLimit;
2133         dc->miterLimit = eNewLimit;
2134         release_dc_ptr( dc );
2135         bRet = TRUE;
2136     }
2137     return bRet;
2138 }
2139
2140 /*******************************************************************
2141  *      GdiIsMetaPrintDC [GDI32.@]
2142  */
2143 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2144 {
2145     FIXME("%p\n", hdc);
2146     return FALSE;
2147 }
2148
2149 /*******************************************************************
2150  *      GdiIsMetaFileDC [GDI32.@]
2151  */
2152 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2153 {
2154     TRACE("%p\n", hdc);
2155
2156     switch( GetObjectType( hdc ) )
2157     {
2158     case OBJ_METADC:
2159     case OBJ_ENHMETADC:
2160         return TRUE;
2161     }
2162     return FALSE;
2163 }
2164
2165 /*******************************************************************
2166  *      GdiIsPlayMetafileDC [GDI32.@]
2167  */
2168 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2169 {
2170     FIXME("%p\n", hdc);
2171     return FALSE;
2172 }