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 <stdarg.h>
  24 #include <stdlib.h>
  25 #include <string.h>
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "wingdi.h"
  29 #include "winreg.h"
  30 #include "winternl.h"
  31 #include "winerror.h"
  32 #include "wownt32.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, void *obj );
  42
  43 static const struct gdi_obj_funcs dc_funcs =
  44 {
  45     NULL,             /* pSelectObject */
  46     NULL,             /* pGetObject16 */
  47     NULL,             /* pGetObjectA */
  48     NULL,             /* pGetObjectW */
  49     NULL,             /* pUnrealizeObject */
  50     DC_DeleteObject   /* pDeleteObject */
  51 };
  52
  53 /***********************************************************************
  54  *           DC_AllocDC
  55  */
  56 DC *DC_AllocDC( const DC_FUNCTIONS *funcs, WORD magic )
  57 {
  58     HDC hdc;
  59     DC *dc;
  60
  61     if (!(dc = GDI_AllocObject( sizeof(*dc), magic, (HGDIOBJ*)&hdc, &dc_funcs ))) return NULL;
  62
  63     dc->hSelf               = hdc;
  64     dc->funcs               = funcs;
  65     dc->physDev             = NULL;
  66     dc->saveLevel           = 0;
  67     dc->saved_dc            = 0;
  68     dc->dwHookData          = 0;
  69     dc->hookProc            = NULL;
  70     dc->hookThunk           = NULL;
  71     dc->wndOrgX             = 0;
  72     dc->wndOrgY             = 0;
  73     dc->wndExtX             = 1;
  74     dc->wndExtY             = 1;
  75     dc->vportOrgX           = 0;
  76     dc->vportOrgY           = 0;
  77     dc->vportExtX           = 1;
  78     dc->vportExtY           = 1;
  79     dc->miterLimit          = 10.0f; /* 10.0 is the default, from MSDN */
  80     dc->flags               = 0;
  81     dc->layout              = 0;
  82     dc->hClipRgn            = 0;
  83     dc->hMetaRgn            = 0;
  84     dc->hMetaClipRgn        = 0;
  85     dc->hVisRgn             = 0;
  86     dc->hPen                = GetStockObject( BLACK_PEN );
  87     dc->hBrush              = GetStockObject( WHITE_BRUSH );
  88     dc->hFont               = GetStockObject( SYSTEM_FONT );
  89     dc->hBitmap             = 0;
  90     dc->hDevice             = 0;
  91     dc->hPalette            = GetStockObject( DEFAULT_PALETTE );
  92     dc->gdiFont             = 0;
  93     dc->ROPmode             = R2_COPYPEN;
  94     dc->polyFillMode        = ALTERNATE;
  95     dc->stretchBltMode      = BLACKONWHITE;
  96     dc->relAbsMode          = ABSOLUTE;
  97     dc->backgroundMode      = OPAQUE;
  98     dc->backgroundColor     = RGB( 255, 255, 255 );
  99     dc->dcBrushColor        = RGB( 255, 255, 255 );
 100     dc->dcPenColor          = RGB( 0, 0, 0 );
 101     dc->textColor           = RGB( 0, 0, 0 );
 102     dc->brushOrgX           = 0;
 103     dc->brushOrgY           = 0;
 104     dc->textAlign           = TA_LEFT | TA_TOP | TA_NOUPDATECP;
 105     dc->charExtra           = 0;
 106     dc->breakExtra          = 0;
 107     dc->breakRem            = 0;
 108     dc->MapMode             = MM_TEXT;
 109     dc->GraphicsMode        = GM_COMPATIBLE;
 110     dc->pAbortProc          = NULL;
 111     dc->CursPosX            = 0;
 112     dc->CursPosY            = 0;
 113     dc->ArcDirection        = AD_COUNTERCLOCKWISE;
 114     dc->xformWorld2Wnd.eM11 = 1.0f;
 115     dc->xformWorld2Wnd.eM12 = 0.0f;
 116     dc->xformWorld2Wnd.eM21 = 0.0f;
 117     dc->xformWorld2Wnd.eM22 = 1.0f;
 118     dc->xformWorld2Wnd.eDx  = 0.0f;
 119     dc->xformWorld2Wnd.eDy  = 0.0f;
 120     dc->xformWorld2Vport    = dc->xformWorld2Wnd;
 121     dc->xformVport2World    = dc->xformWorld2Wnd;
 122     dc->vport2WorldValid    = TRUE;
 123     dc->BoundsRect.left     = 0;
 124     dc->BoundsRect.top      = 0;
 125     dc->BoundsRect.right    = 0;
 126     dc->BoundsRect.bottom   = 0;
 127     dc->saved_visrgn        = NULL;
 128     PATH_InitGdiPath(&dc->path);
 129     return dc;
 130 }
 131
 132
 133
 134 /***********************************************************************
 135  *           DC_GetDCPtr
 136  */
 137 DC *DC_GetDCPtr( HDC hdc )
 138 {
 139     GDIOBJHDR *ptr = GDI_GetObjPtr( hdc, MAGIC_DONTCARE );
 140     if (!ptr) return NULL;
 141     if ((GDIMAGIC(ptr->wMagic) == DC_MAGIC) ||
 142         (GDIMAGIC(ptr->wMagic) == MEMORY_DC_MAGIC) ||
 143         (GDIMAGIC(ptr->wMagic) == METAFILE_DC_MAGIC) ||
 144         (GDIMAGIC(ptr->wMagic) == ENHMETAFILE_DC_MAGIC))
 145         return (DC *)ptr;
 146     GDI_ReleaseObj( hdc );
 147     SetLastError( ERROR_INVALID_HANDLE );
 148     return NULL;
 149 }
 150
 151 /***********************************************************************
 152  *           DC_GetDCUpdate
 153  *
 154  * Retrieve a DC ptr while making sure the visRgn is updated.
 155  * This function may call up to USER so the GDI lock should _not_
 156  * be held when calling it.
 157  */
 158 DC *DC_GetDCUpdate( HDC hdc )
 159 {
 160     DC *dc = DC_GetDCPtr( hdc );
 161     if (!dc) return NULL;
 162     while (dc->flags & DC_DIRTY)
 163     {
 164         DCHOOKPROC proc = dc->hookThunk;
 165         dc->flags &= ~DC_DIRTY;
 166         if (proc)
 167         {
 168             DWORD_PTR data = dc->dwHookData;
 169             DC_ReleaseDCPtr( dc );
 170             proc( hdc, DCHC_INVALIDVISRGN, data, 0 );
 171             if (!(dc = DC_GetDCPtr( hdc ))) break;
 172             /* otherwise restart the loop in case it became dirty again in the meantime */
 173         }
 174     }
 175     return dc;
 176 }
 177
 178
 179 /***********************************************************************
 180  *           DC_ReleaseDCPtr
 181  */
 182 void DC_ReleaseDCPtr( DC *dc )
 183 {
 184     GDI_ReleaseObj( dc->hSelf );
 185 }
 186
 187
 188 /***********************************************************************
 189  *           DC_FreeDCPtr
 190  */
 191 BOOL DC_FreeDCPtr( DC *dc )
 192 {
 193     return GDI_FreeObject( dc->hSelf, dc );
 194 }
 195
 196
 197 /***********************************************************************
 198  *           DC_DeleteObject
 199  */
 200 static BOOL DC_DeleteObject( HGDIOBJ handle, void *obj )
 201 {
 202     GDI_ReleaseObj( handle );
 203     return DeleteDC( handle );
 204 }
 205
 206
 207 /***********************************************************************
 208  *           DC_InitDC
 209  *
 210  * Setup device-specific DC values for a newly created DC.
 211  */
 212 void DC_InitDC( DC* dc )
 213 {
 214     if (dc->funcs->pRealizeDefaultPalette) dc->funcs->pRealizeDefaultPalette( dc->physDev );
 215     SetTextColor( dc->hSelf, dc->textColor );
 216     SetBkColor( dc->hSelf, dc->backgroundColor );
 217     SelectObject( dc->hSelf, dc->hPen );
 218     SelectObject( dc->hSelf, dc->hBrush );
 219     SelectObject( dc->hSelf, dc->hFont );
 220     CLIPPING_UpdateGCRegion( dc );
 221 }
 222
 223
 224 /***********************************************************************
 225  *           DC_InvertXform
 226  *
 227  * Computes the inverse of the transformation xformSrc and stores it to
 228  * xformDest. Returns TRUE if successful or FALSE if the xformSrc matrix
 229  * is singular.
 230  */
 231 static BOOL DC_InvertXform( const XFORM *xformSrc, XFORM *xformDest )
 232 {
 233     FLOAT determinant;
 234
 235     determinant = xformSrc->eM11*xformSrc->eM22 -
 236         xformSrc->eM12*xformSrc->eM21;
 237     if (determinant > -1e-12 && determinant < 1e-12)
 238         return FALSE;
 239
 240     xformDest->eM11 =  xformSrc->eM22 / determinant;
 241     xformDest->eM12 = -xformSrc->eM12 / determinant;
 242     xformDest->eM21 = -xformSrc->eM21 / determinant;
 243     xformDest->eM22 =  xformSrc->eM11 / determinant;
 244     xformDest->eDx  = -xformSrc->eDx * xformDest->eM11 -
 245                        xformSrc->eDy * xformDest->eM21;
 246     xformDest->eDy  = -xformSrc->eDx * xformDest->eM12 -
 247                        xformSrc->eDy * xformDest->eM22;
 248
 249     return TRUE;
 250 }
 251
 252
 253 /***********************************************************************
 254  *           DC_UpdateXforms
 255  *
 256  * Updates the xformWorld2Vport, xformVport2World and vport2WorldValid
 257  * fields of the specified DC by creating a transformation that
 258  * represents the current mapping mode and combining it with the DC's
 259  * world transform. This function should be called whenever the
 260  * parameters associated with the mapping mode (window and viewport
 261  * extents and origins) or the world transform change.
 262  */
 263 void DC_UpdateXforms( DC *dc )
 264 {
 265     XFORM xformWnd2Vport, oldworld2vport;
 266     FLOAT scaleX, scaleY;
 267
 268     /* Construct a transformation to do the window-to-viewport conversion */
 269     scaleX = (FLOAT)dc->vportExtX / (FLOAT)dc->wndExtX;
 270     scaleY = (FLOAT)dc->vportExtY / (FLOAT)dc->wndExtY;
 271     xformWnd2Vport.eM11 = scaleX;
 272     xformWnd2Vport.eM12 = 0.0;
 273     xformWnd2Vport.eM21 = 0.0;
 274     xformWnd2Vport.eM22 = scaleY;
 275     xformWnd2Vport.eDx  = (FLOAT)dc->vportOrgX -
 276         scaleX * (FLOAT)dc->wndOrgX;
 277     xformWnd2Vport.eDy  = (FLOAT)dc->vportOrgY -
 278         scaleY * (FLOAT)dc->wndOrgY;
 279
 280     oldworld2vport = dc->xformWorld2Vport;
 281     /* Combine with the world transformation */
 282     CombineTransform( &dc->xformWorld2Vport, &dc->xformWorld2Wnd,
 283         &xformWnd2Vport );
 284
 285     /* Create inverse of world-to-viewport transformation */
 286     dc->vport2WorldValid = DC_InvertXform( &dc->xformWorld2Vport,
 287         &dc->xformVport2World );
 288
 289     /* Reselect the font and pen back into the dc so that the size
 290        gets updated. */
 291     if(memcmp(&oldworld2vport, &dc->xformWorld2Vport, sizeof(oldworld2vport)))
 292     {
 293         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_FONT));
 294         SelectObject(dc->hSelf, GetCurrentObject(dc->hSelf, OBJ_PEN));
 295     }
 296 }
 297
 298
 299 /***********************************************************************
 300  *           GetDCState   (Not a Windows API)
 301  */
 302 HDC WINAPI GetDCState( HDC hdc )
 303 {
 304     DC * newdc, * dc;
 305     HGDIOBJ handle;
 306
 307     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
 308     if (!(newdc = GDI_AllocObject( sizeof(DC), GDIMAGIC(dc->header.wMagic), &handle, &dc_funcs )))
 309     {
 310       DC_ReleaseDCPtr( dc );
 311       return 0;
 312     }
 313     TRACE("(%p): returning %p\n", hdc, handle );
 314
 315     newdc->flags            = dc->flags | DC_SAVED;
 316     newdc->layout           = dc->layout;
 317     newdc->hPen             = dc->hPen;
 318     newdc->hBrush           = dc->hBrush;
 319     newdc->hFont            = dc->hFont;
 320     newdc->hBitmap          = dc->hBitmap;
 321     newdc->hDevice          = dc->hDevice;
 322     newdc->hPalette         = dc->hPalette;
 323     newdc->ROPmode          = dc->ROPmode;
 324     newdc->polyFillMode     = dc->polyFillMode;
 325     newdc->stretchBltMode   = dc->stretchBltMode;
 326     newdc->relAbsMode       = dc->relAbsMode;
 327     newdc->backgroundMode   = dc->backgroundMode;
 328     newdc->backgroundColor  = dc->backgroundColor;
 329     newdc->textColor        = dc->textColor;
 330     newdc->dcBrushColor     = dc->dcBrushColor;
 331     newdc->dcPenColor       = dc->dcPenColor;
 332     newdc->brushOrgX        = dc->brushOrgX;
 333     newdc->brushOrgY        = dc->brushOrgY;
 334     newdc->textAlign        = dc->textAlign;
 335     newdc->charExtra        = dc->charExtra;
 336     newdc->breakExtra       = dc->breakExtra;
 337     newdc->breakRem         = dc->breakRem;
 338     newdc->MapMode          = dc->MapMode;
 339     newdc->GraphicsMode     = dc->GraphicsMode;
 340     newdc->CursPosX         = dc->CursPosX;
 341     newdc->CursPosY         = dc->CursPosY;
 342     newdc->ArcDirection     = dc->ArcDirection;
 343     newdc->xformWorld2Wnd   = dc->xformWorld2Wnd;
 344     newdc->xformWorld2Vport = dc->xformWorld2Vport;
 345     newdc->xformVport2World = dc->xformVport2World;
 346     newdc->vport2WorldValid = dc->vport2WorldValid;
 347     newdc->wndOrgX          = dc->wndOrgX;
 348     newdc->wndOrgY          = dc->wndOrgY;
 349     newdc->wndExtX          = dc->wndExtX;
 350     newdc->wndExtY          = dc->wndExtY;
 351     newdc->vportOrgX        = dc->vportOrgX;
 352     newdc->vportOrgY        = dc->vportOrgY;
 353     newdc->vportExtX        = dc->vportExtX;
 354     newdc->vportExtY        = dc->vportExtY;
 355     newdc->BoundsRect       = dc->BoundsRect;
 356
 357     newdc->hSelf = (HDC)handle;
 358     newdc->saveLevel = 0;
 359     newdc->saved_dc  = 0;
 360
 361     PATH_InitGdiPath( &newdc->path );
 362
 363     newdc->pAbortProc = NULL;
 364     newdc->hookThunk  = NULL;
 365     newdc->hookProc   = 0;
 366     newdc->saved_visrgn = NULL;
 367
 368     /* Get/SetDCState() don't change hVisRgn field ("Undoc. Windows" p.559). */
 369
 370     newdc->hVisRgn      = 0;
 371     newdc->hClipRgn     = 0;
 372     newdc->hMetaRgn     = 0;
 373     newdc->hMetaClipRgn = 0;
 374     if (dc->hClipRgn)
 375     {
 376         newdc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 377         CombineRgn( newdc->hClipRgn, dc->hClipRgn, 0, RGN_COPY );
 378     }
 379     if (dc->hMetaRgn)
 380     {
 381         newdc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 382         CombineRgn( newdc->hMetaRgn, dc->hMetaRgn, 0, RGN_COPY );
 383     }
 384     /* don't bother recomputing hMetaClipRgn, we'll do that in SetDCState */
 385
 386     if(dc->gdiFont) {
 387         newdc->gdiFont = dc->gdiFont;
 388     } else
 389         newdc->gdiFont = 0;
 390
 391     DC_ReleaseDCPtr( newdc );
 392     DC_ReleaseDCPtr( dc );
 393     return handle;
 394 }
 395
 396
 397 /***********************************************************************
 398  *           SetDCState   (Not a Windows API)
 399  */
 400 void WINAPI SetDCState( HDC hdc, HDC hdcs )
 401 {
 402     DC *dc, *dcs;
 403
 404     if (!(dc = DC_GetDCUpdate( hdc ))) return;
 405     if (!(dcs = DC_GetDCPtr( hdcs )))
 406     {
 407       DC_ReleaseDCPtr( dc );
 408       return;
 409     }
 410     if (!dcs->flags & DC_SAVED)
 411     {
 412       DC_ReleaseDCPtr( dc );
 413       DC_ReleaseDCPtr( dcs );
 414       return;
 415     }
 416     TRACE("%p %p\n", hdc, hdcs );
 417
 418     dc->flags            = dcs->flags & ~(DC_SAVED | DC_DIRTY);
 419     dc->layout           = dcs->layout;
 420     dc->hDevice          = dcs->hDevice;
 421     dc->ROPmode          = dcs->ROPmode;
 422     dc->polyFillMode     = dcs->polyFillMode;
 423     dc->stretchBltMode   = dcs->stretchBltMode;
 424     dc->relAbsMode       = dcs->relAbsMode;
 425     dc->backgroundMode   = dcs->backgroundMode;
 426     dc->backgroundColor  = dcs->backgroundColor;
 427     dc->textColor        = dcs->textColor;
 428     dc->dcBrushColor     = dcs->dcBrushColor;
 429     dc->dcPenColor       = dcs->dcPenColor;
 430     dc->brushOrgX        = dcs->brushOrgX;
 431     dc->brushOrgY        = dcs->brushOrgY;
 432     dc->textAlign        = dcs->textAlign;
 433     dc->charExtra        = dcs->charExtra;
 434     dc->breakExtra       = dcs->breakExtra;
 435     dc->breakRem         = dcs->breakRem;
 436     dc->MapMode          = dcs->MapMode;
 437     dc->GraphicsMode     = dcs->GraphicsMode;
 438     dc->CursPosX         = dcs->CursPosX;
 439     dc->CursPosY         = dcs->CursPosY;
 440     dc->ArcDirection     = dcs->ArcDirection;
 441     dc->xformWorld2Wnd   = dcs->xformWorld2Wnd;
 442     dc->xformWorld2Vport = dcs->xformWorld2Vport;
 443     dc->xformVport2World = dcs->xformVport2World;
 444     dc->vport2WorldValid = dcs->vport2WorldValid;
 445     dc->BoundsRect       = dcs->BoundsRect;
 446
 447     dc->wndOrgX          = dcs->wndOrgX;
 448     dc->wndOrgY          = dcs->wndOrgY;
 449     dc->wndExtX          = dcs->wndExtX;
 450     dc->wndExtY          = dcs->wndExtY;
 451     dc->vportOrgX        = dcs->vportOrgX;
 452     dc->vportOrgY        = dcs->vportOrgY;
 453     dc->vportExtX        = dcs->vportExtX;
 454     dc->vportExtY        = dcs->vportExtY;
 455
 456     if (dcs->hClipRgn)
 457     {
 458         if (!dc->hClipRgn) dc->hClipRgn = CreateRectRgn( 0, 0, 0, 0 );
 459         CombineRgn( dc->hClipRgn, dcs->hClipRgn, 0, RGN_COPY );
 460     }
 461     else
 462     {
 463         if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 464         dc->hClipRgn = 0;
 465     }
 466     if (dcs->hMetaRgn)
 467     {
 468         if (!dc->hMetaRgn) dc->hMetaRgn = CreateRectRgn( 0, 0, 0, 0 );
 469         CombineRgn( dc->hMetaRgn, dcs->hMetaRgn, 0, RGN_COPY );
 470     }
 471     else
 472     {
 473         if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 474         dc->hMetaRgn = 0;
 475     }
 476     CLIPPING_UpdateGCRegion( dc );
 477
 478     SelectObject( hdc, dcs->hBitmap );
 479     SelectObject( hdc, dcs->hBrush );
 480     SelectObject( hdc, dcs->hFont );
 481     SelectObject( hdc, dcs->hPen );
 482     SetBkColor( hdc, dcs->backgroundColor);
 483     SetTextColor( hdc, dcs->textColor);
 484     GDISelectPalette( hdc, dcs->hPalette, FALSE );
 485     DC_ReleaseDCPtr( dcs );
 486     DC_ReleaseDCPtr( dc );
 487 }
 488
 489
 490 /***********************************************************************
 491  *           GetDCState   (GDI.179)
 492  */
 493 HDC16 WINAPI GetDCState16( HDC16 hdc )
 494 {
 495     return HDC_16( GetDCState( HDC_32(hdc) ));
 496 }
 497
 498
 499 /***********************************************************************
 500  *           SetDCState   (GDI.180)
 501  */
 502 void WINAPI SetDCState16( HDC16 hdc, HDC16 hdcs )
 503 {
 504     SetDCState( HDC_32(hdc), HDC_32(hdcs) );
 505 }
 506
 507
 508 /***********************************************************************
 509  *           SaveDC    (GDI32.@)
 510  */
 511 INT WINAPI SaveDC( HDC hdc )
 512 {
 513     HDC hdcs;
 514     DC * dc, * dcs;
 515     INT ret;
 516
 517     dc = DC_GetDCPtr( hdc );
 518     if (!dc) return 0;
 519
 520     if(dc->funcs->pSaveDC)
 521     {
 522         ret = dc->funcs->pSaveDC( dc->physDev );
 523         if(ret)
 524             ret = ++dc->saveLevel;
 525         DC_ReleaseDCPtr( dc );
 526         return ret;
 527     }
 528
 529     if (!(hdcs = GetDCState( hdc )))
 530     {
 531       DC_ReleaseDCPtr( dc );
 532       return 0;
 533     }
 534     dcs = DC_GetDCPtr( hdcs );
 535
 536     /* Copy path. The reason why path saving / restoring is in SaveDC/
 537      * RestoreDC and not in GetDCState/SetDCState is that the ...DCState
 538      * functions are only in Win16 (which doesn't have paths) and that
 539      * SetDCState doesn't allow us to signal an error (which can happen
 540      * when copying paths).
 541      */
 542     if (!PATH_AssignGdiPath( &dcs->path, &dc->path ))
 543     {
 544         DC_ReleaseDCPtr( dc );
 545         DC_ReleaseDCPtr( dcs );
 546         DeleteDC( hdcs );
 547         return 0;
 548     }
 549
 550     dcs->saved_dc = dc->saved_dc;
 551     dc->saved_dc = hdcs;
 552     TRACE("(%p): returning %d\n", hdc, dc->saveLevel+1 );
 553     ret = ++dc->saveLevel;
 554     DC_ReleaseDCPtr( dcs );
 555     DC_ReleaseDCPtr( dc );
 556     return ret;
 557 }
 558
 559
 560 /***********************************************************************
 561  *           RestoreDC    (GDI32.@)
 562  */
 563 BOOL WINAPI RestoreDC( HDC hdc, INT level )
 564 {
 565     DC * dc, * dcs;
 566     BOOL success;
 567
 568     TRACE("%p %d\n", hdc, level );
 569     dc = DC_GetDCUpdate( hdc );
 570     if(!dc) return FALSE;
 571
 572     if(abs(level) > dc->saveLevel || level == 0)
 573     {
 574         DC_ReleaseDCPtr( dc );
 575         return FALSE;
 576     }
 577
 578     if(dc->funcs->pRestoreDC)
 579     {
 580         success = dc->funcs->pRestoreDC( dc->physDev, level );
 581         if(level < 0) level = dc->saveLevel + level + 1;
 582         if(success)
 583             dc->saveLevel = level - 1;
 584         DC_ReleaseDCPtr( dc );
 585         return success;
 586     }
 587
 588     if (level < 0) level = dc->saveLevel + level + 1;
 589     success=TRUE;
 590     while (dc->saveLevel >= level)
 591     {
 592         HDC hdcs = dc->saved_dc;
 593         if (!(dcs = DC_GetDCPtr( hdcs )))
 594         {
 595           DC_ReleaseDCPtr( dc );
 596           return FALSE;
 597         }
 598         dc->saved_dc = dcs->saved_dc;
 599         dcs->saved_dc = 0;
 600         if (--dc->saveLevel < level)
 601         {
 602             SetDCState( hdc, hdcs );
 603             if (!PATH_AssignGdiPath( &dc->path, &dcs->path ))
 604                 /* FIXME: This might not be quite right, since we're
 605                  * returning FALSE but still destroying the saved DC state */
 606                 success=FALSE;
 607         }
 608         DC_ReleaseDCPtr( dcs );
 609         DC_ReleaseDCPtr( dc );
 610         DeleteDC( hdcs );
 611         if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 612     }
 613     DC_ReleaseDCPtr( dc );
 614     return success;
 615 }
 616
 617
 618 /***********************************************************************
 619  *           CreateDCW    (GDI32.@)
 620  */
 621 HDC WINAPI CreateDCW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 622                       const DEVMODEW *initData )
 623 {
 624     HDC hdc;
 625     DC * dc;
 626     const DC_FUNCTIONS *funcs;
 627     WCHAR buf[300];
 628
 629     GDI_CheckNotLock();
 630
 631     if (!device || !DRIVER_GetDriverName( device, buf, 300 ))
 632     {
 633         if (!driver)
 634         {
 635             ERR( "no device found for %s\n", debugstr_w(device) );
 636             return 0;
 637         }
 638         strcpyW(buf, driver);
 639     }
 640
 641     if (!(funcs = DRIVER_load_driver( buf )))
 642     {
 643         ERR( "no driver found for %s\n", debugstr_w(buf) );
 644         return 0;
 645     }
 646     if (!(dc = DC_AllocDC( funcs, DC_MAGIC ))) goto error;
 647     hdc = dc->hSelf;
 648
 649     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 650     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;
 651
 652     TRACE("(driver=%s, device=%s, output=%s): returning %p\n",
 653           debugstr_w(driver), debugstr_w(device), debugstr_w(output), dc->hSelf );
 654
 655     if (dc->funcs->pCreateDC &&
 656         !dc->funcs->pCreateDC( hdc, &dc->physDev, buf, device, output, initData ))
 657     {
 658         WARN("creation aborted by device\n" );
 659         goto error;
 660     }
 661
 662     SetRectRgn( dc->hVisRgn, 0, 0,
 663                 GetDeviceCaps( hdc, DESKTOPHORZRES ), GetDeviceCaps( hdc, DESKTOPVERTRES ) );
 664
 665     DC_InitDC( dc );
 666     DC_ReleaseDCPtr( dc );
 667     return hdc;
 668
 669 error:
 670     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 671     if (dc) DC_FreeDCPtr( dc );
 672     DRIVER_release_driver( funcs );
 673     return 0;
 674 }
 675
 676
 677 /***********************************************************************
 678  *           CreateDCA    (GDI32.@)
 679  */
 680 HDC WINAPI CreateDCA( LPCSTR driver, LPCSTR device, LPCSTR output,
 681                       const DEVMODEA *initData )
 682 {
 683     UNICODE_STRING driverW, deviceW, outputW;
 684     DEVMODEW *initDataW;
 685     HDC ret;
 686
 687     if (driver) RtlCreateUnicodeStringFromAsciiz(&driverW, driver);
 688     else driverW.Buffer = NULL;
 689
 690     if (device) RtlCreateUnicodeStringFromAsciiz(&deviceW, device);
 691     else deviceW.Buffer = NULL;
 692
 693     if (output) RtlCreateUnicodeStringFromAsciiz(&outputW, output);
 694     else outputW.Buffer = NULL;
 695
 696     initDataW = NULL;
 697     if (initData)
 698     {
 699         /* don't convert initData for DISPLAY driver, it's not used */
 700         if (!driverW.Buffer || strcmpiW( driverW.Buffer, displayW ))
 701             initDataW = GdiConvertToDevmodeW(initData);
 702     }
 703
 704     ret = CreateDCW( driverW.Buffer, deviceW.Buffer, outputW.Buffer, initDataW );
 705
 706     RtlFreeUnicodeString(&driverW);
 707     RtlFreeUnicodeString(&deviceW);
 708     RtlFreeUnicodeString(&outputW);
 709     HeapFree(GetProcessHeap(), 0, initDataW);
 710     return ret;
 711 }
 712
 713
 714 /***********************************************************************
 715  *           CreateICA    (GDI32.@)
 716  */
 717 HDC WINAPI CreateICA( LPCSTR driver, LPCSTR device, LPCSTR output,
 718                           const DEVMODEA* initData )
 719 {
 720       /* Nothing special yet for ICs */
 721     return CreateDCA( driver, device, output, initData );
 722 }
 723
 724
 725 /***********************************************************************
 726  *           CreateICW    (GDI32.@)
 727  */
 728 HDC WINAPI CreateICW( LPCWSTR driver, LPCWSTR device, LPCWSTR output,
 729                           const DEVMODEW* initData )
 730 {
 731       /* Nothing special yet for ICs */
 732     return CreateDCW( driver, device, output, initData );
 733 }
 734
 735
 736 /***********************************************************************
 737  *           CreateCompatibleDC   (GDI32.@)
 738  */
 739 HDC WINAPI CreateCompatibleDC( HDC hdc )
 740 {
 741     DC *dc, *origDC;
 742     const DC_FUNCTIONS *funcs = NULL;
 743     PHYSDEV physDev = NULL;
 744
 745     GDI_CheckNotLock();
 746
 747     if ((origDC = DC_GetDCPtr( hdc )))
 748     {
 749         if (GetObjectType( hdc ) == OBJ_DC)
 750         {
 751             funcs = origDC->funcs;
 752             physDev = origDC->physDev;
 753         }
 754         DC_ReleaseDCPtr( origDC ); /* can't hold the lock while loading the driver */
 755         if (funcs) funcs = DRIVER_get_driver( funcs );
 756     }
 757
 758     if (!funcs && !(funcs = DRIVER_load_driver( displayW ))) return 0;
 759
 760     if (!(dc = DC_AllocDC( funcs, MEMORY_DC_MAGIC ))) goto error;
 761
 762     TRACE("(%p): returning %p\n", hdc, dc->hSelf );
 763
 764     dc->hBitmap = GetStockObject( DEFAULT_BITMAP );
 765     if (!(dc->hVisRgn = CreateRectRgn( 0, 0, 1, 1 ))) goto error;   /* default bitmap is 1x1 */
 766
 767     /* Copy the driver-specific physical device info into
 768      * the new DC. The driver may use this read-only info
 769      * while creating the compatible DC below. */
 770     dc->physDev = physDev;
 771
 772     if (dc->funcs->pCreateDC &&
 773         !dc->funcs->pCreateDC( dc->hSelf, &dc->physDev, NULL, NULL, NULL, NULL ))
 774     {
 775         WARN("creation aborted by device\n");
 776         goto error;
 777     }
 778
 779     DC_InitDC( dc );
 780     DC_ReleaseDCPtr( dc );
 781     return dc->hSelf;
 782
 783 error:
 784     if (dc && dc->hVisRgn) DeleteObject( dc->hVisRgn );
 785     if (dc) DC_FreeDCPtr( dc );
 786     DRIVER_release_driver( funcs );
 787     return 0;
 788 }
 789
 790
 791 /***********************************************************************
 792  *           DeleteDC    (GDI32.@)
 793  */
 794 BOOL WINAPI DeleteDC( HDC hdc )
 795 {
 796     const DC_FUNCTIONS *funcs = NULL;
 797     DC * dc;
 798
 799     TRACE("%p\n", hdc );
 800
 801     GDI_CheckNotLock();
 802
 803     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
 804
 805     /* Call hook procedure to check whether is it OK to delete this DC */
 806     if (dc->hookThunk)
 807     {
 808         DCHOOKPROC proc = dc->hookThunk;
 809         DWORD_PTR data = dc->dwHookData;
 810         DC_ReleaseDCPtr( dc );
 811         if (!proc( hdc, DCHC_DELETEDC, data, 0 )) return FALSE;
 812         if (!(dc = DC_GetDCPtr( hdc ))) return TRUE;  /* deleted by the hook */
 813     }
 814
 815     while (dc->saveLevel)
 816     {
 817         DC * dcs;
 818         HDC hdcs = dc->saved_dc;
 819         if (!(dcs = DC_GetDCPtr( hdcs ))) break;
 820         dc->saved_dc = dcs->saved_dc;
 821         dc->saveLevel--;
 822         if (dcs->hClipRgn) DeleteObject( dcs->hClipRgn );
 823         if (dcs->hMetaRgn) DeleteObject( dcs->hMetaRgn );
 824         if (dcs->hMetaClipRgn) DeleteObject( dcs->hMetaClipRgn );
 825         if (dcs->hVisRgn) DeleteObject( dcs->hVisRgn );
 826         PATH_DestroyGdiPath(&dcs->path);
 827         DC_FreeDCPtr( dcs );
 828     }
 829
 830     if (!(dc->flags & DC_SAVED))
 831     {
 832         SelectObject( hdc, GetStockObject(BLACK_PEN) );
 833         SelectObject( hdc, GetStockObject(WHITE_BRUSH) );
 834         SelectObject( hdc, GetStockObject(SYSTEM_FONT) );
 835         SelectObject( hdc, GetStockObject(DEFAULT_BITMAP) );
 836         funcs = dc->funcs;
 837         if (dc->funcs->pDeleteDC) dc->funcs->pDeleteDC(dc->physDev);
 838         dc->physDev = NULL;
 839     }
 840
 841     while (dc->saved_visrgn)
 842     {
 843         struct saved_visrgn *next = dc->saved_visrgn->next;
 844         DeleteObject( dc->saved_visrgn->hrgn );
 845         HeapFree( GetProcessHeap(), 0, dc->saved_visrgn );
 846         dc->saved_visrgn = next;
 847     }
 848     if (dc->hClipRgn) DeleteObject( dc->hClipRgn );
 849     if (dc->hMetaRgn) DeleteObject( dc->hMetaRgn );
 850     if (dc->hMetaClipRgn) DeleteObject( dc->hMetaClipRgn );
 851     if (dc->hVisRgn) DeleteObject( dc->hVisRgn );
 852     PATH_DestroyGdiPath(&dc->path);
 853
 854     DC_FreeDCPtr( dc );
 855     if (funcs) DRIVER_release_driver( funcs );  /* do that after releasing the GDI lock */
 856     return TRUE;
 857 }
 858
 859
 860 /***********************************************************************
 861  *           ResetDCW    (GDI32.@)
 862  */
 863 HDC WINAPI ResetDCW( HDC hdc, const DEVMODEW *devmode )
 864 {
 865     DC *dc;
 866     HDC ret = hdc;
 867
 868     if ((dc = DC_GetDCPtr( hdc )))
 869     {
 870         if (dc->funcs->pResetDC) ret = dc->funcs->pResetDC( dc->physDev, devmode );
 871         DC_ReleaseDCPtr( dc );
 872     }
 873     return ret;
 874 }
 875
 876
 877 /***********************************************************************
 878  *           ResetDCA    (GDI32.@)
 879  */
 880 HDC WINAPI ResetDCA( HDC hdc, const DEVMODEA *devmode )
 881 {
 882     DEVMODEW *devmodeW;
 883     HDC ret;
 884
 885     if (devmode) devmodeW = GdiConvertToDevmodeW(devmode);
 886     else devmodeW = NULL;
 887
 888     ret = ResetDCW(hdc, devmodeW);
 889
 890     HeapFree(GetProcessHeap(), 0, devmodeW);
 891     return ret;
 892 }
 893
 894
 895 /***********************************************************************
 896  *           GetDeviceCaps    (GDI32.@)
 897  */
 898 INT WINAPI GetDeviceCaps( HDC hdc, INT cap )
 899 {
 900     DC *dc;
 901     INT ret = 0;
 902
 903     if ((dc = DC_GetDCPtr( hdc )))
 904     {
 905         if (dc->funcs->pGetDeviceCaps) ret = dc->funcs->pGetDeviceCaps( dc->physDev, cap );
 906         else switch(cap)  /* return meaningful values for some entries */
 907         {
 908         case HORZRES:     ret = 640; break;
 909         case VERTRES:     ret = 480; break;
 910         case BITSPIXEL:   ret = 1; break;
 911         case PLANES:      ret = 1; break;
 912         case NUMCOLORS:   ret = 2; break;
 913         case ASPECTX:     ret = 36; break;
 914         case ASPECTY:     ret = 36; break;
 915         case ASPECTXY:    ret = 51; break;
 916         case LOGPIXELSX:  ret = 72; break;
 917         case LOGPIXELSY:  ret = 72; break;
 918         case SIZEPALETTE: ret = 2; break;
 919         }
 920         DC_ReleaseDCPtr( dc );
 921     }
 922     return ret;
 923 }
 924
 925
 926 /***********************************************************************
 927  *              GetBkColor (GDI32.@)
 928  */
 929 COLORREF WINAPI GetBkColor( HDC hdc )
 930 {
 931     COLORREF ret = 0;
 932     DC * dc = DC_GetDCPtr( hdc );
 933     if (dc)
 934     {
 935         ret = dc->backgroundColor;
 936         DC_ReleaseDCPtr( dc );
 937     }
 938     return ret;
 939 }
 940
 941
 942 /***********************************************************************
 943  *           SetBkColor    (GDI32.@)
 944  */
 945 COLORREF WINAPI SetBkColor( HDC hdc, COLORREF color )
 946 {
 947     COLORREF oldColor;
 948     DC * dc = DC_GetDCPtr( hdc );
 949
 950     TRACE("hdc=%p color=0x%08x\n", hdc, color);
 951
 952     if (!dc) return CLR_INVALID;
 953     oldColor = dc->backgroundColor;
 954     if (dc->funcs->pSetBkColor)
 955     {
 956         color = dc->funcs->pSetBkColor(dc->physDev, color);
 957         if (color == CLR_INVALID)  /* don't change it */
 958         {
 959             color = oldColor;
 960             oldColor = CLR_INVALID;
 961         }
 962     }
 963     dc->backgroundColor = color;
 964     DC_ReleaseDCPtr( dc );
 965     return oldColor;
 966 }
 967
 968
 969 /***********************************************************************
 970  *              GetTextColor (GDI32.@)
 971  */
 972 COLORREF WINAPI GetTextColor( HDC hdc )
 973 {
 974     COLORREF ret = 0;
 975     DC * dc = DC_GetDCPtr( hdc );
 976     if (dc)
 977     {
 978         ret = dc->textColor;
 979         DC_ReleaseDCPtr( dc );
 980     }
 981     return ret;
 982 }
 983
 984
 985 /***********************************************************************
 986  *           SetTextColor    (GDI32.@)
 987  */
 988 COLORREF WINAPI SetTextColor( HDC hdc, COLORREF color )
 989 {
 990     COLORREF oldColor;
 991     DC * dc = DC_GetDCPtr( hdc );
 992
 993     TRACE(" hdc=%p color=0x%08x\n", hdc, color);
 994
 995     if (!dc) return CLR_INVALID;
 996     oldColor = dc->textColor;
 997     if (dc->funcs->pSetTextColor)
 998     {
 999         color = dc->funcs->pSetTextColor(dc->physDev, color);
1000         if (color == CLR_INVALID)  /* don't change it */
1001         {
1002             color = oldColor;
1003             oldColor = CLR_INVALID;
1004         }
1005     }
1006     dc->textColor = color;
1007     DC_ReleaseDCPtr( dc );
1008     return oldColor;
1009 }
1010
1011
1012 /***********************************************************************
1013  *              GetTextAlign (GDI32.@)
1014  */
1015 UINT WINAPI GetTextAlign( HDC hdc )
1016 {
1017     UINT ret = 0;
1018     DC * dc = DC_GetDCPtr( hdc );
1019     if (dc)
1020     {
1021         ret = dc->textAlign;
1022         DC_ReleaseDCPtr( dc );
1023     }
1024     return ret;
1025 }
1026
1027
1028 /***********************************************************************
1029  *           SetTextAlign    (GDI32.@)
1030  */
1031 UINT WINAPI SetTextAlign( HDC hdc, UINT align )
1032 {
1033     UINT ret;
1034     DC *dc = DC_GetDCPtr( hdc );
1035
1036     TRACE("hdc=%p align=%d\n", hdc, align);
1037
1038     if (!dc) return 0x0;
1039     ret = dc->textAlign;
1040     if (dc->funcs->pSetTextAlign)
1041         if (!dc->funcs->pSetTextAlign(dc->physDev, align))
1042             ret = GDI_ERROR;
1043     if (ret != GDI_ERROR)
1044         dc->textAlign = align;
1045     DC_ReleaseDCPtr( dc );
1046     return ret;
1047 }
1048
1049 /***********************************************************************
1050  *           GetDCOrgEx  (GDI32.@)
1051  */
1052 BOOL WINAPI GetDCOrgEx( HDC hDC, LPPOINT lpp )
1053 {
1054     DC * dc;
1055
1056     if (!lpp) return FALSE;
1057     if (!(dc = DC_GetDCPtr( hDC ))) return FALSE;
1058
1059     lpp->x = lpp->y = 0;
1060     if (dc->funcs->pGetDCOrgEx) dc->funcs->pGetDCOrgEx( dc->physDev, lpp );
1061     DC_ReleaseDCPtr( dc );
1062     return TRUE;
1063 }
1064
1065
1066 /***********************************************************************
1067  *           SetDCOrg   (GDI.117)
1068  */
1069 DWORD WINAPI SetDCOrg16( HDC16 hdc16, INT16 x, INT16 y )
1070 {
1071     DWORD prevOrg = 0;
1072     HDC hdc = HDC_32( hdc16 );
1073     DC *dc = DC_GetDCPtr( hdc );
1074     if (!dc) return 0;
1075     if (dc->funcs->pSetDCOrg) prevOrg = dc->funcs->pSetDCOrg( dc->physDev, x, y );
1076     DC_ReleaseDCPtr( dc );
1077     return prevOrg;
1078 }
1079
1080
1081 /***********************************************************************
1082  *              GetGraphicsMode (GDI32.@)
1083  */
1084 INT WINAPI GetGraphicsMode( HDC hdc )
1085 {
1086     INT ret = 0;
1087     DC * dc = DC_GetDCPtr( hdc );
1088     if (dc)
1089     {
1090         ret = dc->GraphicsMode;
1091         DC_ReleaseDCPtr( dc );
1092     }
1093     return ret;
1094 }
1095
1096
1097 /***********************************************************************
1098  *           SetGraphicsMode    (GDI32.@)
1099  */
1100 INT WINAPI SetGraphicsMode( HDC hdc, INT mode )
1101 {
1102     INT ret = 0;
1103     DC *dc = DC_GetDCPtr( hdc );
1104
1105     /* One would think that setting the graphics mode to GM_COMPATIBLE
1106      * would also reset the world transformation matrix to the unity
1107      * matrix. However, in Windows, this is not the case. This doesn't
1108      * make a lot of sense to me, but that's the way it is.
1109      */
1110     if (!dc) return 0;
1111     if ((mode > 0) && (mode <= GM_LAST))
1112     {
1113         ret = dc->GraphicsMode;
1114         dc->GraphicsMode = mode;
1115     }
1116     DC_ReleaseDCPtr( dc );
1117     return ret;
1118 }
1119
1120
1121 /***********************************************************************
1122  *              GetArcDirection (GDI32.@)
1123  */
1124 INT WINAPI GetArcDirection( HDC hdc )
1125 {
1126     INT ret = 0;
1127     DC * dc = DC_GetDCPtr( hdc );
1128     if (dc)
1129     {
1130         ret = dc->ArcDirection;
1131         DC_ReleaseDCPtr( dc );
1132     }
1133     return ret;
1134 }
1135
1136
1137 /***********************************************************************
1138  *           SetArcDirection    (GDI32.@)
1139  */
1140 INT WINAPI SetArcDirection( HDC hdc, INT nDirection )
1141 {
1142     DC * dc;
1143     INT nOldDirection = 0;
1144
1145     if (nDirection!=AD_COUNTERCLOCKWISE && nDirection!=AD_CLOCKWISE)
1146     {
1147         SetLastError(ERROR_INVALID_PARAMETER);
1148         return 0;
1149     }
1150
1151     if ((dc = DC_GetDCPtr( hdc )))
1152     {
1153         if (dc->funcs->pSetArcDirection)
1154         {
1155             dc->funcs->pSetArcDirection(dc->physDev, nDirection);
1156         }
1157         nOldDirection = dc->ArcDirection;
1158         dc->ArcDirection = nDirection;
1159         DC_ReleaseDCPtr( dc );
1160     }
1161     return nOldDirection;
1162 }
1163
1164
1165 /***********************************************************************
1166  *           GetWorldTransform    (GDI32.@)
1167  */
1168 BOOL WINAPI GetWorldTransform( HDC hdc, LPXFORM xform )
1169 {
1170     DC * dc;
1171     if (!xform) return FALSE;
1172     if (!(dc = DC_GetDCPtr( hdc ))) return FALSE;
1173     *xform = dc->xformWorld2Wnd;
1174     DC_ReleaseDCPtr( dc );
1175     return TRUE;
1176 }
1177
1178
1179 /***********************************************************************
1180  *           GetTransform    (GDI32.@)
1181  */
1182 BOOL WINAPI GetTransform( HDC hdc, DWORD unknown, LPXFORM xform )
1183 {
1184     if (unknown == 0x0203) return GetWorldTransform( hdc, xform );
1185     FIXME("stub: don't know what to do for code %x\n", unknown );
1186     return FALSE;
1187 }
1188
1189
1190 /***********************************************************************
1191  *           SetWorldTransform    (GDI32.@)
1192  */
1193 BOOL WINAPI SetWorldTransform( HDC hdc, const XFORM *xform )
1194 {
1195     BOOL ret = FALSE;
1196     DC *dc = DC_GetDCPtr( hdc );
1197
1198     if (!dc) return FALSE;
1199     if (!xform) goto done;
1200
1201     /* Check that graphics mode is GM_ADVANCED */
1202     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1203
1204     if (dc->funcs->pSetWorldTransform)
1205     {
1206         ret = dc->funcs->pSetWorldTransform(dc->physDev, xform);
1207         if (!ret) goto done;
1208     }
1209
1210     dc->xformWorld2Wnd = *xform;
1211     DC_UpdateXforms( dc );
1212     ret = TRUE;
1213  done:
1214     DC_ReleaseDCPtr( dc );
1215     return ret;
1216 }
1217
1218
1219 /****************************************************************************
1220  * ModifyWorldTransform [GDI32.@]
1221  * Modifies the world transformation for a device context.
1222  *
1223  * PARAMS
1224  *    hdc   [I] Handle to device context
1225  *    xform [I] XFORM structure that will be used to modify the world
1226  *              transformation
1227  *    iMode [I] Specifies in what way to modify the world transformation
1228  *              Possible values:
1229  *              MWT_IDENTITY
1230  *                 Resets the world transformation to the identity matrix.
1231  *                 The parameter xform is ignored.
1232  *              MWT_LEFTMULTIPLY
1233  *                 Multiplies xform into the world transformation matrix from
1234  *                 the left.
1235  *              MWT_RIGHTMULTIPLY
1236  *                 Multiplies xform into the world transformation matrix from
1237  *                 the right.
1238  *
1239  * RETURNS
1240  *  Success: TRUE.
1241  *  Failure: FALSE. Use GetLastError() to determine the cause.
1242  */
1243 BOOL WINAPI ModifyWorldTransform( HDC hdc, const XFORM *xform,
1244     DWORD iMode )
1245 {
1246     BOOL ret = FALSE;
1247     DC *dc = DC_GetDCPtr( hdc );
1248
1249     /* Check for illegal parameters */
1250     if (!dc) return FALSE;
1251     if (!xform && iMode != MWT_IDENTITY) goto done;
1252
1253     /* Check that graphics mode is GM_ADVANCED */
1254     if (dc->GraphicsMode!=GM_ADVANCED) goto done;
1255
1256     if (dc->funcs->pModifyWorldTransform)
1257     {
1258         ret = dc->funcs->pModifyWorldTransform(dc->physDev, xform, iMode);
1259         if (!ret) goto done;
1260     }
1261
1262     switch (iMode)
1263     {
1264         case MWT_IDENTITY:
1265             dc->xformWorld2Wnd.eM11 = 1.0f;
1266             dc->xformWorld2Wnd.eM12 = 0.0f;
1267             dc->xformWorld2Wnd.eM21 = 0.0f;
1268             dc->xformWorld2Wnd.eM22 = 1.0f;
1269             dc->xformWorld2Wnd.eDx  = 0.0f;
1270             dc->xformWorld2Wnd.eDy  = 0.0f;
1271             break;
1272         case MWT_LEFTMULTIPLY:
1273             CombineTransform( &dc->xformWorld2Wnd, xform,
1274                 &dc->xformWorld2Wnd );
1275             break;
1276         case MWT_RIGHTMULTIPLY:
1277             CombineTransform( &dc->xformWorld2Wnd, &dc->xformWorld2Wnd,
1278                 xform );
1279             break;
1280         default:
1281             goto done;
1282     }
1283
1284     DC_UpdateXforms( dc );
1285     ret = TRUE;
1286  done:
1287     DC_ReleaseDCPtr( dc );
1288     return ret;
1289 }
1290
1291
1292 /****************************************************************************
1293  * CombineTransform [GDI32.@]
1294  * Combines two transformation matrices.
1295  *
1296  * PARAMS
1297  *    xformResult [O] Stores the result of combining the two matrices
1298  *    xform1      [I] Specifies the first matrix to apply
1299  *    xform2      [I] Specifies the second matrix to apply
1300  *
1301  * REMARKS
1302  *    The same matrix can be passed in for more than one of the parameters.
1303  *
1304  * RETURNS
1305  *  Success: TRUE.
1306  *  Failure: FALSE. Use GetLastError() to determine the cause.
1307  */
1308 BOOL WINAPI CombineTransform( LPXFORM xformResult, const XFORM *xform1,
1309     const XFORM *xform2 )
1310 {
1311     XFORM xformTemp;
1312
1313     /* Check for illegal parameters */
1314     if (!xformResult || !xform1 || !xform2)
1315         return FALSE;
1316
1317     /* Create the result in a temporary XFORM, since xformResult may be
1318      * equal to xform1 or xform2 */
1319     xformTemp.eM11 = xform1->eM11 * xform2->eM11 +
1320                      xform1->eM12 * xform2->eM21;
1321     xformTemp.eM12 = xform1->eM11 * xform2->eM12 +
1322                      xform1->eM12 * xform2->eM22;
1323     xformTemp.eM21 = xform1->eM21 * xform2->eM11 +
1324                      xform1->eM22 * xform2->eM21;
1325     xformTemp.eM22 = xform1->eM21 * xform2->eM12 +
1326                      xform1->eM22 * xform2->eM22;
1327     xformTemp.eDx  = xform1->eDx  * xform2->eM11 +
1328                      xform1->eDy  * xform2->eM21 +
1329                      xform2->eDx;
1330     xformTemp.eDy  = xform1->eDx  * xform2->eM12 +
1331                      xform1->eDy  * xform2->eM22 +
1332                      xform2->eDy;
1333
1334     /* Copy the result to xformResult */
1335     *xformResult = xformTemp;
1336
1337     return TRUE;
1338 }
1339
1340
1341 /***********************************************************************
1342  *           SetDCHook   (GDI32.@)
1343  *
1344  * Note: this doesn't exist in Win32, we add it here because user32 needs it.
1345  */
1346 BOOL WINAPI SetDCHook( HDC hdc, DCHOOKPROC hookProc, DWORD_PTR dwHookData )
1347 {
1348     DC *dc = DC_GetDCPtr( hdc );
1349
1350     if (!dc) return FALSE;
1351
1352     if (!(dc->flags & DC_SAVED))
1353     {
1354         dc->dwHookData = dwHookData;
1355         dc->hookThunk = hookProc;
1356     }
1357     DC_ReleaseDCPtr( dc );
1358     return TRUE;
1359 }
1360
1361
1362 /* relay function to call the 16-bit DC hook proc */
1363 static BOOL WINAPI call_dc_hook16( HDC hdc, WORD code, DWORD_PTR data, LPARAM lParam )
1364 {
1365     WORD args[6];
1366     DWORD ret;
1367     FARPROC16 proc = NULL;
1368     DC *dc = DC_GetDCPtr( hdc );
1369
1370     if (!dc) return FALSE;
1371     proc = dc->hookProc;
1372     DC_ReleaseDCPtr( dc );
1373     if (!proc) return FALSE;
1374     args[5] = HDC_16(hdc);
1375     args[4] = code;
1376     args[3] = HIWORD(data);
1377     args[2] = LOWORD(data);
1378     args[1] = HIWORD(lParam);
1379     args[0] = LOWORD(lParam);
1380     WOWCallback16Ex( (DWORD)proc, WCB16_PASCAL, sizeof(args), args, &ret );
1381     return LOWORD(ret);
1382 }
1383
1384 /***********************************************************************
1385  *           SetDCHook   (GDI.190)
1386  */
1387 BOOL16 WINAPI SetDCHook16( HDC16 hdc16, FARPROC16 hookProc, DWORD dwHookData )
1388 {
1389     HDC hdc = HDC_32( hdc16 );
1390     DC *dc = DC_GetDCPtr( hdc );
1391     if (!dc) return FALSE;
1392
1393     dc->hookProc = hookProc;
1394     DC_ReleaseDCPtr( dc );
1395     return SetDCHook( hdc, call_dc_hook16, dwHookData );
1396 }
1397
1398
1399 /***********************************************************************
1400  *           GetDCHook   (GDI.191)
1401  */
1402 DWORD WINAPI GetDCHook16( HDC16 hdc16, FARPROC16 *phookProc )
1403 {
1404     HDC hdc = HDC_32( hdc16 );
1405     DC *dc = DC_GetDCPtr( hdc );
1406     DWORD ret;
1407
1408     if (!dc) return 0;
1409     *phookProc = dc->hookProc;
1410     ret = dc->dwHookData;
1411     DC_ReleaseDCPtr( dc );
1412     return ret;
1413 }
1414
1415
1416 /***********************************************************************
1417  *           SetHookFlags   (GDI.192)
1418  */
1419 WORD WINAPI SetHookFlags16(HDC16 hdc16, WORD flags)
1420 {
1421     HDC hdc = HDC_32( hdc16 );
1422     DC *dc = DC_GetDCPtr( hdc );
1423
1424     if( dc )
1425     {
1426         WORD wRet = dc->flags & DC_DIRTY;
1427
1428         /* "Undocumented Windows" info is slightly confusing.
1429          */
1430
1431         TRACE("hDC %p, flags %04x\n",hdc,flags);
1432
1433         if( flags & DCHF_INVALIDATEVISRGN )
1434             dc->flags |= DC_DIRTY;
1435         else if( flags & DCHF_VALIDATEVISRGN || !flags )
1436             dc->flags &= ~DC_DIRTY;
1437         DC_ReleaseDCPtr( dc );
1438         return wRet;
1439     }
1440     return 0;
1441 }
1442
1443 /***********************************************************************
1444  *           SetICMMode    (GDI32.@)
1445  */
1446 INT WINAPI SetICMMode(HDC hdc, INT iEnableICM)
1447 {
1448 /*FIXME  Asuming that ICM is always off, and cannot be turned on */
1449     if (iEnableICM == ICM_OFF) return ICM_OFF;
1450     if (iEnableICM == ICM_ON) return 0;
1451     if (iEnableICM == ICM_QUERY) return ICM_OFF;
1452     return 0;
1453 }
1454
1455 /***********************************************************************
1456  *           GetDeviceGammaRamp    (GDI32.@)
1457  */
1458 BOOL WINAPI GetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1459 {
1460     BOOL ret = FALSE;
1461     DC *dc = DC_GetDCPtr( hDC );
1462
1463     if( dc )
1464     {
1465         if (dc->funcs->pGetDeviceGammaRamp)
1466             ret = dc->funcs->pGetDeviceGammaRamp(dc->physDev, ptr);
1467         DC_ReleaseDCPtr( dc );
1468     }
1469     return ret;
1470 }
1471
1472 /***********************************************************************
1473  *           SetDeviceGammaRamp    (GDI32.@)
1474  */
1475 BOOL WINAPI SetDeviceGammaRamp(HDC hDC, LPVOID ptr)
1476 {
1477     BOOL ret = FALSE;
1478     DC *dc = DC_GetDCPtr( hDC );
1479
1480     if( dc )
1481     {
1482         if (dc->funcs->pSetDeviceGammaRamp)
1483             ret = dc->funcs->pSetDeviceGammaRamp(dc->physDev, ptr);
1484         DC_ReleaseDCPtr( dc );
1485     }
1486     return ret;
1487 }
1488
1489 /***********************************************************************
1490  *           GetColorSpace    (GDI32.@)
1491  */
1492 HCOLORSPACE WINAPI GetColorSpace(HDC hdc)
1493 {
1494 /*FIXME    Need to to whatever GetColorSpace actually does */
1495     return 0;
1496 }
1497
1498 /***********************************************************************
1499  *           CreateColorSpaceA    (GDI32.@)
1500  */
1501 HCOLORSPACE WINAPI CreateColorSpaceA( LPLOGCOLORSPACEA lpLogColorSpace )
1502 {
1503   FIXME( "stub\n" );
1504   return 0;
1505 }
1506
1507 /***********************************************************************
1508  *           CreateColorSpaceW    (GDI32.@)
1509  */
1510 HCOLORSPACE WINAPI CreateColorSpaceW( LPLOGCOLORSPACEW lpLogColorSpace )
1511 {
1512   FIXME( "stub\n" );
1513   return 0;
1514 }
1515
1516 /***********************************************************************
1517  *           DeleteColorSpace     (GDI32.@)
1518  */
1519 BOOL WINAPI DeleteColorSpace( HCOLORSPACE hColorSpace )
1520 {
1521   FIXME( "stub\n" );
1522
1523   return TRUE;
1524 }
1525
1526 /***********************************************************************
1527  *           SetColorSpace     (GDI32.@)
1528  */
1529 HCOLORSPACE WINAPI SetColorSpace( HDC hDC, HCOLORSPACE hColorSpace )
1530 {
1531   FIXME( "stub\n" );
1532
1533   return hColorSpace;
1534 }
1535
1536 /***********************************************************************
1537  *           GetBoundsRect    (GDI32.@)
1538  */
1539 UINT WINAPI GetBoundsRect(HDC hdc, LPRECT rect, UINT flags)
1540 {
1541     UINT ret;
1542     DC *dc = DC_GetDCPtr( hdc );
1543
1544     if ( !dc ) return 0;
1545
1546     if (rect) *rect = dc->BoundsRect;
1547
1548     ret = ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1549
1550     if (flags & DCB_RESET)
1551     {
1552         dc->BoundsRect.left   = 0;
1553         dc->BoundsRect.top    = 0;
1554         dc->BoundsRect.right  = 0;
1555         dc->BoundsRect.bottom = 0;
1556         dc->flags &= ~DC_BOUNDS_SET;
1557     }
1558     DC_ReleaseDCPtr( dc );
1559     return ret;
1560 }
1561
1562
1563 /***********************************************************************
1564  *           SetBoundsRect    (GDI32.@)
1565  */
1566 UINT WINAPI SetBoundsRect(HDC hdc, const RECT* rect, UINT flags)
1567 {
1568     UINT ret;
1569     DC *dc;
1570
1571     if ((flags & DCB_ENABLE) && (flags & DCB_DISABLE)) return 0;
1572     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1573
1574     ret = ((dc->flags & DC_BOUNDS_ENABLE) ? DCB_ENABLE : DCB_DISABLE) |
1575           ((dc->flags & DC_BOUNDS_SET) ? DCB_SET : DCB_RESET);
1576
1577     if (flags & DCB_RESET)
1578     {
1579         dc->BoundsRect.left   = 0;
1580         dc->BoundsRect.top    = 0;
1581         dc->BoundsRect.right  = 0;
1582         dc->BoundsRect.bottom = 0;
1583         dc->flags &= ~DC_BOUNDS_SET;
1584     }
1585
1586     if ((flags & DCB_ACCUMULATE) && rect && rect->left < rect->right && rect->top < rect->bottom)
1587     {
1588         if (dc->flags & DC_BOUNDS_SET)
1589         {
1590             dc->BoundsRect.left   = min( dc->BoundsRect.left, rect->left );
1591             dc->BoundsRect.top    = min( dc->BoundsRect.top, rect->top );
1592             dc->BoundsRect.right  = max( dc->BoundsRect.right, rect->right );
1593             dc->BoundsRect.bottom = max( dc->BoundsRect.bottom, rect->bottom );
1594         }
1595         else
1596         {
1597             dc->BoundsRect = *rect;
1598             dc->flags |= DC_BOUNDS_SET;
1599         }
1600     }
1601
1602     if (flags & DCB_ENABLE) dc->flags |= DC_BOUNDS_ENABLE;
1603     if (flags & DCB_DISABLE) dc->flags &= ~DC_BOUNDS_ENABLE;
1604
1605     DC_ReleaseDCPtr( dc );
1606     return ret;
1607 }
1608
1609
1610 /***********************************************************************
1611  *              GetRelAbs               (GDI32.@)
1612  */
1613 INT WINAPI GetRelAbs( HDC hdc, DWORD dwIgnore )
1614 {
1615     INT ret = 0;
1616     DC *dc = DC_GetDCPtr( hdc );
1617     if (dc)
1618     {
1619         ret = dc->relAbsMode;
1620         DC_ReleaseDCPtr( dc );
1621     }
1622     return ret;
1623 }
1624
1625
1626
1627
1628 /***********************************************************************
1629  *              GetBkMode (GDI32.@)
1630  */
1631 INT WINAPI GetBkMode( HDC hdc )
1632 {
1633     INT ret = 0;
1634     DC * dc = DC_GetDCPtr( hdc );
1635     if (dc)
1636     {
1637         ret = dc->backgroundMode;
1638         DC_ReleaseDCPtr( dc );
1639     }
1640     return ret;
1641 }
1642
1643
1644 /***********************************************************************
1645  *              SetBkMode (GDI32.@)
1646  */
1647 INT WINAPI SetBkMode( HDC hdc, INT mode )
1648 {
1649     INT ret;
1650     DC *dc;
1651     if ((mode <= 0) || (mode > BKMODE_LAST))
1652     {
1653         SetLastError(ERROR_INVALID_PARAMETER);
1654         return 0;
1655     }
1656     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1657
1658     ret = dc->backgroundMode;
1659     if (dc->funcs->pSetBkMode)
1660         if (!dc->funcs->pSetBkMode( dc->physDev, mode ))
1661             ret = 0;
1662     if (ret)
1663         dc->backgroundMode = mode;
1664     DC_ReleaseDCPtr( dc );
1665     return ret;
1666 }
1667
1668
1669 /***********************************************************************
1670  *              GetROP2 (GDI32.@)
1671  */
1672 INT WINAPI GetROP2( HDC hdc )
1673 {
1674     INT ret = 0;
1675     DC * dc = DC_GetDCPtr( hdc );
1676     if (dc)
1677     {
1678         ret = dc->ROPmode;
1679         DC_ReleaseDCPtr( dc );
1680     }
1681     return ret;
1682 }
1683
1684
1685 /***********************************************************************
1686  *              SetROP2 (GDI32.@)
1687  */
1688 INT WINAPI SetROP2( HDC hdc, INT mode )
1689 {
1690     INT ret;
1691     DC *dc;
1692     if ((mode < R2_BLACK) || (mode > R2_WHITE))
1693     {
1694         SetLastError(ERROR_INVALID_PARAMETER);
1695         return 0;
1696     }
1697     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1698     ret = dc->ROPmode;
1699     if (dc->funcs->pSetROP2)
1700         if (!dc->funcs->pSetROP2( dc->physDev, mode ))
1701             ret = 0;
1702     if (ret)
1703         dc->ROPmode = mode;
1704     DC_ReleaseDCPtr( dc );
1705     return ret;
1706 }
1707
1708
1709 /***********************************************************************
1710  *              SetRelAbs (GDI32.@)
1711  */
1712 INT WINAPI SetRelAbs( HDC hdc, INT mode )
1713 {
1714     INT ret;
1715     DC *dc;
1716     if ((mode != ABSOLUTE) && (mode != RELATIVE))
1717     {
1718         SetLastError(ERROR_INVALID_PARAMETER);
1719         return 0;
1720     }
1721     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1722     if (dc->funcs->pSetRelAbs)
1723         ret = dc->funcs->pSetRelAbs( dc->physDev, mode );
1724     else
1725     {
1726         ret = dc->relAbsMode;
1727         dc->relAbsMode = mode;
1728     }
1729     DC_ReleaseDCPtr( dc );
1730     return ret;
1731 }
1732
1733
1734 /***********************************************************************
1735  *              GetPolyFillMode (GDI32.@)
1736  */
1737 INT WINAPI GetPolyFillMode( HDC hdc )
1738 {
1739     INT ret = 0;
1740     DC * dc = DC_GetDCPtr( hdc );
1741     if (dc)
1742     {
1743         ret = dc->polyFillMode;
1744         DC_ReleaseDCPtr( dc );
1745     }
1746     return ret;
1747 }
1748
1749
1750 /***********************************************************************
1751  *              SetPolyFillMode (GDI32.@)
1752  */
1753 INT WINAPI SetPolyFillMode( HDC hdc, INT mode )
1754 {
1755     INT ret;
1756     DC *dc;
1757     if ((mode <= 0) || (mode > POLYFILL_LAST))
1758     {
1759         SetLastError(ERROR_INVALID_PARAMETER);
1760         return 0;
1761     }
1762     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1763     ret = dc->polyFillMode;
1764     if (dc->funcs->pSetPolyFillMode)
1765         if (!dc->funcs->pSetPolyFillMode( dc->physDev, mode ))
1766             ret = 0;
1767     if (ret)
1768         dc->polyFillMode = mode;
1769     DC_ReleaseDCPtr( dc );
1770     return ret;
1771 }
1772
1773
1774 /***********************************************************************
1775  *              GetStretchBltMode (GDI32.@)
1776  */
1777 INT WINAPI GetStretchBltMode( HDC hdc )
1778 {
1779     INT ret = 0;
1780     DC * dc = DC_GetDCPtr( hdc );
1781     if (dc)
1782     {
1783         ret = dc->stretchBltMode;
1784         DC_ReleaseDCPtr( dc );
1785     }
1786     return ret;
1787 }
1788
1789
1790 /***********************************************************************
1791  *              SetStretchBltMode (GDI32.@)
1792  */
1793 INT WINAPI SetStretchBltMode( HDC hdc, INT mode )
1794 {
1795     INT ret;
1796     DC *dc;
1797     if ((mode <= 0) || (mode > MAXSTRETCHBLTMODE))
1798     {
1799         SetLastError(ERROR_INVALID_PARAMETER);
1800         return 0;
1801     }
1802     if (!(dc = DC_GetDCPtr( hdc ))) return 0;
1803     ret = dc->stretchBltMode;
1804     if (dc->funcs->pSetStretchBltMode)
1805         if (!dc->funcs->pSetStretchBltMode( dc->physDev, mode ))
1806             ret = 0;
1807     if (ret)
1808         dc->stretchBltMode = mode;
1809     DC_ReleaseDCPtr( dc );
1810     return ret;
1811 }
1812
1813
1814 /***********************************************************************
1815  *              GetMapMode (GDI32.@)
1816  */
1817 INT WINAPI GetMapMode( HDC hdc )
1818 {
1819     INT ret = 0;
1820     DC * dc = DC_GetDCPtr( hdc );
1821     if (dc)
1822     {
1823         ret = dc->MapMode;
1824         DC_ReleaseDCPtr( dc );
1825     }
1826     return ret;
1827 }
1828
1829
1830 /***********************************************************************
1831  *              GetBrushOrgEx (GDI32.@)
1832  */
1833 BOOL WINAPI GetBrushOrgEx( HDC hdc, LPPOINT pt )
1834 {
1835     DC * dc = DC_GetDCPtr( hdc );
1836     if (!dc) return FALSE;
1837     pt->x = dc->brushOrgX;
1838     pt->y = dc->brushOrgY;
1839     DC_ReleaseDCPtr( dc );
1840     return TRUE;
1841 }
1842
1843
1844 /***********************************************************************
1845  *              GetCurrentPositionEx (GDI32.@)
1846  */
1847 BOOL WINAPI GetCurrentPositionEx( HDC hdc, LPPOINT pt )
1848 {
1849     DC * dc = DC_GetDCPtr( hdc );
1850     if (!dc) return FALSE;
1851     pt->x = dc->CursPosX;
1852     pt->y = dc->CursPosY;
1853     DC_ReleaseDCPtr( dc );
1854     return TRUE;
1855 }
1856
1857
1858 /***********************************************************************
1859  *              GetViewportExtEx (GDI32.@)
1860  */
1861 BOOL WINAPI GetViewportExtEx( HDC hdc, LPSIZE size )
1862 {
1863     DC * dc = DC_GetDCPtr( hdc );
1864     if (!dc) return FALSE;
1865     size->cx = dc->vportExtX;
1866     size->cy = dc->vportExtY;
1867     DC_ReleaseDCPtr( dc );
1868     return TRUE;
1869 }
1870
1871
1872 /***********************************************************************
1873  *              GetViewportOrgEx (GDI32.@)
1874  */
1875 BOOL WINAPI GetViewportOrgEx( HDC hdc, LPPOINT pt )
1876 {
1877     DC * dc = DC_GetDCPtr( hdc );
1878     if (!dc) return FALSE;
1879     pt->x = dc->vportOrgX;
1880     pt->y = dc->vportOrgY;
1881     DC_ReleaseDCPtr( dc );
1882     return TRUE;
1883 }
1884
1885
1886 /***********************************************************************
1887  *              GetWindowExtEx (GDI32.@)
1888  */
1889 BOOL WINAPI GetWindowExtEx( HDC hdc, LPSIZE size )
1890 {
1891     DC * dc = DC_GetDCPtr( hdc );
1892     if (!dc) return FALSE;
1893     size->cx = dc->wndExtX;
1894     size->cy = dc->wndExtY;
1895     DC_ReleaseDCPtr( dc );
1896     return TRUE;
1897 }
1898
1899
1900 /***********************************************************************
1901  *              GetWindowOrgEx (GDI32.@)
1902  */
1903 BOOL WINAPI GetWindowOrgEx( HDC hdc, LPPOINT pt )
1904 {
1905     DC * dc = DC_GetDCPtr( hdc );
1906     if (!dc) return FALSE;
1907     pt->x = dc->wndOrgX;
1908     pt->y = dc->wndOrgY;
1909     DC_ReleaseDCPtr( dc );
1910     return TRUE;
1911 }
1912
1913
1914 /***********************************************************************
1915  *              InquireVisRgn   (GDI.131)
1916  */
1917 HRGN16 WINAPI InquireVisRgn16( HDC16 hdc )
1918 {
1919     HRGN16 ret = 0;
1920     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
1921     if (dc)
1922     {
1923         ret = HRGN_16(dc->hVisRgn);
1924         DC_ReleaseDCPtr( dc );
1925     }
1926     return ret;
1927 }
1928
1929
1930 /***********************************************************************
1931  *              GetClipRgn (GDI.173)
1932  */
1933 HRGN16 WINAPI GetClipRgn16( HDC16 hdc )
1934 {
1935     HRGN16 ret = 0;
1936     DC * dc = DC_GetDCPtr( HDC_32(hdc) );
1937     if (dc)
1938     {
1939         ret = HRGN_16(dc->hClipRgn);
1940         DC_ReleaseDCPtr( dc );
1941     }
1942     return ret;
1943 }
1944
1945
1946 /***********************************************************************
1947  *           GetLayout    (GDI32.@)
1948  *
1949  * Gets left->right or right->left text layout flags of a dc.
1950  *
1951  */
1952 DWORD WINAPI GetLayout(HDC hdc)
1953 {
1954     DWORD layout = GDI_ERROR;
1955
1956     DC * dc = DC_GetDCPtr( hdc );
1957     if (dc)
1958     {
1959         layout = dc->layout;
1960         DC_ReleaseDCPtr( dc );
1961     }
1962
1963     TRACE("hdc : %p, layout : %08x\n", hdc, layout);
1964
1965     return layout;
1966 }
1967
1968 /***********************************************************************
1969  *           SetLayout    (GDI32.@)
1970  *
1971  * Sets left->right or right->left text layout flags of a dc.
1972  *
1973  */
1974 DWORD WINAPI SetLayout(HDC hdc, DWORD layout)
1975 {
1976     DWORD oldlayout = GDI_ERROR;
1977
1978     DC * dc = DC_GetDCPtr( hdc );
1979     if (dc)
1980     {
1981         oldlayout = dc->layout;
1982         dc->layout = layout;
1983         DC_ReleaseDCPtr( dc );
1984     }
1985
1986     TRACE("hdc : %p, old layout : %08x, new layout : %08x\n", hdc, oldlayout, layout);
1987
1988     return oldlayout;
1989 }
1990
1991 /***********************************************************************
1992  *           GetDCBrushColor    (GDI32.@)
1993  *
1994  * Retrieves the current brush color for the specified device
1995  * context (DC).
1996  *
1997  */
1998 COLORREF WINAPI GetDCBrushColor(HDC hdc)
1999 {
2000     DC *dc;
2001     COLORREF dcBrushColor = CLR_INVALID;
2002
2003     TRACE("hdc(%p)\n", hdc);
2004
2005     dc = DC_GetDCPtr( hdc );
2006     if (dc)
2007     {
2008         dcBrushColor = dc->dcBrushColor;
2009         DC_ReleaseDCPtr( dc );
2010     }
2011
2012     return dcBrushColor;
2013 }
2014
2015 /***********************************************************************
2016  *           SetDCBrushColor    (GDI32.@)
2017  *
2018  * Sets the current device context (DC) brush color to the specified
2019  * color value. If the device cannot represent the specified color
2020  * value, the color is set to the nearest physical color.
2021  *
2022  */
2023 COLORREF WINAPI SetDCBrushColor(HDC hdc, COLORREF crColor)
2024 {
2025     DC *dc;
2026     COLORREF oldClr = CLR_INVALID;
2027
2028     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2029
2030     dc = DC_GetDCPtr( hdc );
2031     if (dc)
2032     {
2033         if (dc->funcs->pSetDCBrushColor)
2034             crColor = dc->funcs->pSetDCBrushColor( dc->physDev, crColor );
2035         else if (dc->hBrush == GetStockObject( DC_BRUSH ))
2036         {
2037             /* If DC_BRUSH is selected, update driver pen color */
2038             HBRUSH hBrush = CreateSolidBrush( crColor );
2039             dc->funcs->pSelectBrush( dc->physDev, hBrush );
2040             DeleteObject( hBrush );
2041         }
2042
2043         if (crColor != CLR_INVALID)
2044         {
2045             oldClr = dc->dcBrushColor;
2046             dc->dcBrushColor = crColor;
2047         }
2048
2049         DC_ReleaseDCPtr( dc );
2050     }
2051
2052     return oldClr;
2053 }
2054
2055 /***********************************************************************
2056  *           GetDCPenColor    (GDI32.@)
2057  *
2058  * Retrieves the current pen color for the specified device
2059  * context (DC).
2060  *
2061  */
2062 COLORREF WINAPI GetDCPenColor(HDC hdc)
2063 {
2064     DC *dc;
2065     COLORREF dcPenColor = CLR_INVALID;
2066
2067     TRACE("hdc(%p)\n", hdc);
2068
2069     dc = DC_GetDCPtr( hdc );
2070     if (dc)
2071     {
2072         dcPenColor = dc->dcPenColor;
2073         DC_ReleaseDCPtr( dc );
2074     }
2075
2076     return dcPenColor;
2077 }
2078
2079 /***********************************************************************
2080  *           SetDCPenColor    (GDI32.@)
2081  *
2082  * Sets the current device context (DC) pen color to the specified
2083  * color value. If the device cannot represent the specified color
2084  * value, the color is set to the nearest physical color.
2085  *
2086  */
2087 COLORREF WINAPI SetDCPenColor(HDC hdc, COLORREF crColor)
2088 {
2089     DC *dc;
2090     COLORREF oldClr = CLR_INVALID;
2091
2092     TRACE("hdc(%p) crColor(%08x)\n", hdc, crColor);
2093
2094     dc = DC_GetDCPtr( hdc );
2095     if (dc)
2096     {
2097         if (dc->funcs->pSetDCPenColor)
2098             crColor = dc->funcs->pSetDCPenColor( dc->physDev, crColor );
2099         else if (dc->hPen == GetStockObject( DC_PEN ))
2100         {
2101             /* If DC_PEN is selected, update the driver pen color */
2102             LOGPEN logpen = { PS_SOLID, { 0, 0 }, crColor };
2103             HPEN hPen = CreatePenIndirect( &logpen );
2104             dc->funcs->pSelectPen( dc->physDev, hPen );
2105             DeleteObject( hPen );
2106         }
2107
2108         if (crColor != CLR_INVALID)
2109         {
2110             oldClr = dc->dcPenColor;
2111             dc->dcPenColor = crColor;
2112         }
2113
2114         DC_ReleaseDCPtr( dc );
2115     }
2116
2117     return oldClr;
2118 }
2119
2120 /***********************************************************************
2121  *           CancelDC    (GDI32.@)
2122  */
2123 BOOL WINAPI CancelDC(HDC hdc)
2124 {
2125     FIXME("stub\n");
2126     return TRUE;
2127 }
2128
2129 /***********************************************************************
2130  *           SetVirtualResolution   (GDI32.@)
2131  *
2132  * Undocumented on msdn.  Called when PowerPoint XP saves a file.
2133  */
2134 DWORD WINAPI SetVirtualResolution(HDC hdc, DWORD dw2, DWORD dw3, DWORD dw4, DWORD dw5)
2135 {
2136     FIXME("(%p %08x %08x %08x %08x): stub!\n", hdc, dw2, dw3, dw4, dw5);
2137     return FALSE;
2138 }
2139
2140 /*******************************************************************
2141  *      GetMiterLimit [GDI32.@]
2142  *
2143  *
2144  */
2145 BOOL WINAPI GetMiterLimit(HDC hdc, PFLOAT peLimit)
2146 {
2147     BOOL bRet = FALSE;
2148     DC *dc;
2149
2150     TRACE("(%p,%p)\n", hdc, peLimit);
2151
2152     dc = DC_GetDCPtr( hdc );
2153     if (dc)
2154     {
2155         if (peLimit)
2156             *peLimit = dc->miterLimit;
2157
2158         DC_ReleaseDCPtr( dc );
2159         bRet = TRUE;
2160     }
2161     return bRet;
2162 }
2163
2164 /*******************************************************************
2165  *      SetMiterLimit [GDI32.@]
2166  *
2167  *
2168  */
2169 BOOL WINAPI SetMiterLimit(HDC hdc, FLOAT eNewLimit, PFLOAT peOldLimit)
2170 {
2171     BOOL bRet = FALSE;
2172     DC *dc;
2173
2174     TRACE("(%p,%f,%p)\n", hdc, eNewLimit, peOldLimit);
2175
2176     dc = DC_GetDCPtr( hdc );
2177     if (dc)
2178     {
2179         if (peOldLimit)
2180             *peOldLimit = dc->miterLimit;
2181         dc->miterLimit = eNewLimit;
2182         DC_ReleaseDCPtr( dc );
2183         bRet = TRUE;
2184     }
2185     return bRet;
2186 }
2187
2188 /*******************************************************************
2189  *      GdiIsMetaPrintDC [GDI32.@]
2190  */
2191 BOOL WINAPI GdiIsMetaPrintDC(HDC hdc)
2192 {
2193     FIXME("%p\n", hdc);
2194     return FALSE;
2195 }
2196
2197 /*******************************************************************
2198  *      GdiIsMetaFileDC [GDI32.@]
2199  */
2200 BOOL WINAPI GdiIsMetaFileDC(HDC hdc)
2201 {
2202     TRACE("%p\n", hdc);
2203
2204     switch( GetObjectType( hdc ) )
2205     {
2206     case OBJ_METADC:
2207     case OBJ_ENHMETADC:
2208         return TRUE;
2209     }
2210     return FALSE;
2211 }
2212
2213 /*******************************************************************
2214  *      GdiIsPlayMetafileDC [GDI32.@]
2215  */
2216 BOOL WINAPI GdiIsPlayMetafileDC(HDC hdc)
2217 {
2218     FIXME("%p\n", hdc);
2219     return FALSE;
2220 }