include/gdi.h

   1 /*
   2  * GDI definitions
   3  *
   4  * Copyright 1993 Alexandre Julliard
   5  */
   6
   7 #ifndef __WINE_GDI_H
   8 #define __WINE_GDI_H
   9
  10 #include "config.h"
  11
  12 #include "windef.h"
  13 #include "wingdi.h"
  14 #include "wine/wingdi16.h"
  15 #include "ldt.h"
  16 #include "local.h"
  17 #include "path.h"
  18 #include <math.h>
  19
  20   /* GDI objects magic numbers */
  21 #define PEN_MAGIC             0x4f47
  22 #define BRUSH_MAGIC           0x4f48
  23 #define FONT_MAGIC            0x4f49
  24 #define PALETTE_MAGIC         0x4f4a
  25 #define BITMAP_MAGIC          0x4f4b
  26 #define REGION_MAGIC          0x4f4c
  27 #define DC_MAGIC              0x4f4d
  28 #define DISABLED_DC_MAGIC     0x4f4e
  29 #define META_DC_MAGIC         0x4f4f
  30 #define METAFILE_MAGIC        0x4f50
  31 #define METAFILE_DC_MAGIC     0x4f51
  32 #define ENHMETAFILE_MAGIC     0x4f52
  33 #define ENHMETAFILE_DC_MAGIC  0x4f53
  34
  35 #define MAGIC_DONTCARE        0xffff
  36
  37 typedef struct tagGDIOBJHDR
  38 {
  39     HANDLE16    hNext;
  40     WORD        wMagic;
  41     DWORD       dwCount;
  42 } GDIOBJHDR;
  43
  44
  45 typedef struct tagDeviceCaps
  46 {
  47     WORD   version;       /*   0: driver version */
  48     WORD   technology;    /*   2: device technology */
  49     WORD   horzSize;      /*   4: width of display in mm */
  50     WORD   vertSize;      /*   6: height of display in mm */
  51     WORD   horzRes;       /*   8: width of display in pixels */
  52     WORD   vertRes;       /*  10: width of display in pixels */
  53     WORD   bitsPixel;     /*  12: bits per pixel */
  54     WORD   planes;        /*  14: color planes */
  55     WORD   numBrushes;    /*  16: device-specific brushes */
  56     WORD   numPens;       /*  18: device-specific pens */
  57     WORD   numMarkers;    /*  20: device-specific markers */
  58     WORD   numFonts;      /*  22: device-specific fonts */
  59     WORD   numColors;     /*  24: size of color table */
  60     WORD   pdeviceSize;   /*  26: size of PDEVICE structure */
  61     WORD   curveCaps;     /*  28: curve capabilities */
  62     WORD   lineCaps;      /*  30: line capabilities */
  63     WORD   polygonalCaps; /*  32: polygon capabilities */
  64     WORD   textCaps;      /*  34: text capabilities */
  65     WORD   clipCaps;      /*  36: clipping capabilities */
  66     WORD   rasterCaps;    /*  38: raster capabilities */
  67     WORD   aspectX;       /*  40: relative width of device pixel */
  68     WORD   aspectY;       /*  42: relative height of device pixel */
  69     WORD   aspectXY;      /*  44: relative diagonal width of device pixel */
  70     WORD   pad1[21];      /*  46-86: reserved */
  71     WORD   logPixelsX;    /*  88: pixels / logical X inch */
  72     WORD   logPixelsY;    /*  90: pixels / logical Y inch */
  73     WORD   pad2[6];       /*  92-102: reserved */
  74     WORD   sizePalette;   /* 104: entries in system palette */
  75     WORD   numReserved;   /* 106: reserved entries */
  76     WORD   colorRes;      /* 108: color resolution */
  77 } DeviceCaps;
  78
  79 typedef struct tagGDI_DRIVER
  80 {
  81     BOOL (*pInitialize)(void);
  82     void (*pFinalize)(void);
  83 } GDI_DRIVER;
  84
  85 extern GDI_DRIVER *GDI_Driver;
  86
  87   /* Device independent DC information */
  88 typedef struct
  89 {
  90     int           flags;
  91     const DeviceCaps *devCaps;
  92
  93     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  94     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  95     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  96     HPEN16        hPen;
  97     HBRUSH16      hBrush;
  98     HFONT16       hFont;
  99     HBITMAP16     hBitmap;
 100     HBITMAP16     hFirstBitmap; /* Bitmap selected at creation of the DC */
 101     HANDLE16      hDevice;
 102     HPALETTE16    hPalette;
 103
 104     GdiPath       path;
 105
 106     WORD          ROPmode;
 107     WORD          polyFillMode;
 108     WORD          stretchBltMode;
 109     WORD          relAbsMode;
 110     WORD          backgroundMode;
 111     COLORREF      backgroundColor;
 112     COLORREF      textColor;
 113     short         brushOrgX;
 114     short         brushOrgY;
 115
 116     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 117     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 118     short         breakTotalExtra;   /* Total extra space for justification */
 119     short         breakCount;        /* Break char. count */
 120     short         breakExtra;        /* breakTotalExtra / breakCount */
 121     short         breakRem;          /* breakTotalExtra % breakCount */
 122
 123     RECT          totalExtent;
 124     BYTE          bitsPerPixel;
 125
 126     INT           MapMode;
 127     INT           GraphicsMode;      /* Graphics mode */
 128     INT           DCOrgX;            /* DC origin */
 129     INT           DCOrgY;
 130     ABORTPROC     pAbortProc;        /* AbortProc for Printing */
 131     INT           CursPosX;          /* Current position */
 132     INT           CursPosY;
 133     INT           ArcDirection;
 134     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 135     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 136     XFORM         xformVport2World;  /* Inverse of the above transformation */
 137     BOOL          vport2WorldValid;  /* Is xformVport2World valid? */
 138 } WIN_DC_INFO;
 139
 140
 141 typedef BOOL16 (CALLBACK *DCHOOKPROC)(HDC16,WORD,DWORD,LPARAM);
 142
 143 typedef struct tagDC
 144 {
 145     GDIOBJHDR    header;
 146     HDC          hSelf;            /* Handle to this DC */
 147     const struct tagDC_FUNCS *funcs; /* DC function table */
 148     void         *physDev;         /* Physical device (driver-specific) */
 149     INT          saveLevel;
 150     DWORD        dwHookData;
 151     FARPROC16    hookProc;         /* the original SEGPTR ... */
 152     DCHOOKPROC   hookThunk;        /* ... and the thunk to call it */
 153
 154     INT          wndOrgX;          /* Window origin */
 155     INT          wndOrgY;
 156     INT          wndExtX;          /* Window extent */
 157     INT          wndExtY;
 158     INT          vportOrgX;        /* Viewport origin */
 159     INT          vportOrgY;
 160     INT          vportExtX;        /* Viewport extent */
 161     INT          vportExtY;
 162
 163     WIN_DC_INFO w;
 164 } DC;
 165
 166 /* Device functions for the Wine driver interface */
 167
 168 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONTEX16,LPNEWTEXTMETRIC16,UINT16,LPARAM);
 169
 170 typedef struct tagDC_FUNCS
 171 {
 172     INT      (*pAbortDoc)(DC*);
 173     BOOL     (*pAbortPath)(DC*);
 174     BOOL     (*pAngleArc)(DC*,INT,INT,DWORD,FLOAT,FLOAT);
 175     BOOL     (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 176     BOOL     (*pArcTo)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 177     BOOL     (*pBeginPath)(DC*);
 178     BOOL     (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
 179     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 180     BOOL     (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 181     BOOL     (*pCloseFigure)(DC*);
 182     BOOL     (*pCreateBitmap)(HBITMAP);
 183     BOOL     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 184     HBITMAP  (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
 185                                   DWORD);
 186     HBITMAP16 (*pCreateDIBSection16)(DC *,BITMAPINFO *,UINT16,SEGPTR *,HANDLE,
 187                                      DWORD);
 188     BOOL     (*pDeleteDC)(DC*);
 189     BOOL     (*pDeleteObject)(HGDIOBJ);
 190     DWORD    (*pDeviceCapabilities)(LPSTR,LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 191     BOOL     (*pEllipse)(DC*,INT,INT,INT,INT);
 192     INT      (*pEndDoc)(DC*);
 193     INT      (*pEndPage)(DC*);
 194     BOOL     (*pEndPath)(DC*);
 195     BOOL     (*pEnumDeviceFonts)(DC*,LPLOGFONT16,DEVICEFONTENUMPROC,LPARAM);
 196     INT      (*pEscape)(DC*,INT,INT,SEGPTR,SEGPTR);
 197     INT      (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
 198     INT      (*pExtDeviceMode)(LPSTR,HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,
 199                                LPSTR,DWORD);
 200     BOOL     (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
 201     BOOL     (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCSTR,UINT,
 202                             const INT*);
 203     BOOL     (*pFillPath)(DC*);
 204     BOOL     (*pFillRgn)(DC*,HRGN,HBRUSH);
 205     BOOL     (*pFlattenPath)(DC*);
 206     BOOL     (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
 207     BOOL     (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
 208     COLORREF (*pGetPixel)(DC*,INT,INT);
 209     BOOL     (*pGetTextExtentPoint)(DC*,LPCSTR,INT,LPSIZE);
 210     BOOL     (*pGetTextMetrics)(DC*,TEXTMETRICA*);
 211     INT      (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
 212     BOOL     (*pInvertRgn)(DC*,HRGN);
 213     BOOL     (*pLineTo)(DC*,INT,INT);
 214     HANDLE   (*pLoadOEMResource)(WORD,WORD);
 215     BOOL     (*pMoveToEx)(DC*,INT,INT,LPPOINT);
 216     INT      (*pOffsetClipRgn)(DC*,INT,INT);
 217     BOOL     (*pOffsetViewportOrg)(DC*,INT,INT);
 218     BOOL     (*pOffsetWindowOrg)(DC*,INT,INT);
 219     BOOL     (*pPaintRgn)(DC*,HRGN);
 220     BOOL     (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
 221     BOOL     (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 222     BOOL     (*pPolyBezier)(DC*,const POINT*,DWORD);
 223     BOOL     (*pPolyBezierTo)(DC*,const POINT*,DWORD);
 224     BOOL     (*pPolyDraw)(DC*,const POINT*,const BYTE *,DWORD);
 225     BOOL     (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
 226     BOOL     (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
 227     BOOL     (*pPolygon)(DC*,const POINT*,INT);
 228     BOOL     (*pPolyline)(DC*,const POINT*,INT);
 229     BOOL     (*pPolylineTo)(DC*,const POINT*,INT);
 230     UINT     (*pRealizePalette)(DC*);
 231     BOOL     (*pRectangle)(DC*,INT,INT,INT,INT);
 232     BOOL     (*pRestoreDC)(DC*,INT);
 233     BOOL     (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
 234     INT      (*pSaveDC)(DC*);
 235     BOOL     (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
 236     BOOL     (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
 237     BOOL     (*pSelectClipPath)(DC*,INT);
 238     INT      (*pSelectClipRgn)(DC*,HRGN);
 239     HANDLE   (*pSelectObject)(DC*,HANDLE);
 240     HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
 241     COLORREF (*pSetBkColor)(DC*,COLORREF);
 242     INT      (*pSetBkMode)(DC*,INT);
 243     VOID     (*pSetDeviceClipping)(DC*);
 244     INT      (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
 245                                    LPCVOID,const BITMAPINFO*,UINT);
 246     INT      (*pSetMapMode)(DC*,INT);
 247     DWORD    (*pSetMapperFlags)(DC*,DWORD);
 248     COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
 249     INT      (*pSetPolyFillMode)(DC*,INT);
 250     INT      (*pSetROP2)(DC*,INT);
 251     INT      (*pSetRelAbs)(DC*,INT);
 252     INT      (*pSetStretchBltMode)(DC*,INT);
 253     UINT     (*pSetTextAlign)(DC*,UINT);
 254     INT      (*pSetTextCharacterExtra)(DC*,INT);
 255     DWORD    (*pSetTextColor)(DC*,DWORD);
 256     INT      (*pSetTextJustification)(DC*,INT,INT);
 257     BOOL     (*pSetViewportExt)(DC*,INT,INT);
 258     BOOL     (*pSetViewportOrg)(DC*,INT,INT);
 259     BOOL     (*pSetWindowExt)(DC*,INT,INT);
 260     BOOL     (*pSetWindowOrg)(DC*,INT,INT);
 261     INT      (*pStartDoc)(DC*,const DOCINFOA*);
 262     INT      (*pStartPage)(DC*);
 263     BOOL     (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
 264     INT      (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
 265                                const void *,const BITMAPINFO *,UINT,DWORD);
 266     BOOL     (*pStrokeAndFillPath)(DC*);
 267     BOOL     (*pStrokePath)(DC*);
 268     BOOL     (*pWidenPath)(DC*);
 269 } DC_FUNCTIONS;
 270
 271   /* LoadOEMResource types */
 272 #define OEM_BITMAP  1
 273 #define OEM_CURSOR  2
 274 #define OEM_ICON    3
 275
 276   /* DC hook codes */
 277 #define DCHC_INVALIDVISRGN      0x0001
 278 #define DCHC_DELETEDC           0x0002
 279
 280 #define DCHF_INVALIDATEVISRGN   0x0001
 281 #define DCHF_VALIDATEVISRGN     0x0002
 282
 283   /* DC flags */
 284 #define DC_MEMORY     0x0001   /* It is a memory DC */
 285 #define DC_SAVED      0x0002   /* It is a saved DC */
 286 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 287 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 288
 289   /* Last 32 bytes are reserved for stock object handles */
 290 #define GDI_HEAP_SIZE               0xffe0
 291
 292   /* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
 293 #define FIRST_STOCK_HANDLE          GDI_HEAP_SIZE
 294
 295   /* Stock objects handles */
 296
 297 #define NB_STOCK_OBJECTS          (DEFAULT_GUI_FONT + 1)
 298
 299 #define STOCK_WHITE_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
 300 #define STOCK_LTGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
 301 #define STOCK_GRAY_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
 302 #define STOCK_DKGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
 303 #define STOCK_BLACK_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
 304 #define STOCK_NULL_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
 305 #define STOCK_HOLLOW_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
 306 #define STOCK_WHITE_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
 307 #define STOCK_BLACK_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
 308 #define STOCK_NULL_PEN          ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
 309 #define STOCK_OEM_FIXED_FONT    ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
 310 #define STOCK_ANSI_FIXED_FONT   ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
 311 #define STOCK_ANSI_VAR_FONT     ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
 312 #define STOCK_SYSTEM_FONT       ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
 313 #define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
 314 #define STOCK_DEFAULT_PALETTE   ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
 315 #define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
 316 #define STOCK_DEFAULT_GUI_FONT  ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
 317
 318 #define FIRST_STOCK_FONT        STOCK_OEM_FIXED_FONT
 319 #define LAST_STOCK_FONT         STOCK_DEFAULT_GUI_FONT
 320
 321 #define LAST_STOCK_HANDLE       ((DWORD)STOCK_DEFAULT_GUI_FONT)
 322
 323   /* Device <-> logical coords conversion */
 324
 325 /* A floating point version of the POINT structure */
 326 typedef struct tagFLOAT_POINT
 327 {
 328    FLOAT x, y;
 329 } FLOAT_POINT;
 330
 331 /* Rounds a floating point number to integer. The world-to-viewport
 332  * transformation process is done in floating point internally. This function
 333  * is then used to round these coordinates to integer values.
 334  */
 335 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 336 {
 337    return (int)floor(val + 0.5);
 338 }
 339
 340 /* Performs a viewport-to-world transformation on the specified point (which
 341  * is in floating point format). Returns TRUE if successful, else FALSE.
 342  */
 343 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 344 {
 345     FLOAT x, y;
 346
 347     /* Check that the viewport-to-world transformation is valid */
 348     if (!dc->w.vport2WorldValid)
 349         return FALSE;
 350
 351     /* Perform the transformation */
 352     x = point->x;
 353     y = point->y;
 354     point->x = x * dc->w.xformVport2World.eM11 +
 355                y * dc->w.xformVport2World.eM21 +
 356                dc->w.xformVport2World.eDx;
 357     point->y = x * dc->w.xformVport2World.eM12 +
 358                y * dc->w.xformVport2World.eM22 +
 359                dc->w.xformVport2World.eDy;
 360
 361     return TRUE;
 362 }
 363
 364 /* Performs a viewport-to-world transformation on the specified point (which
 365  * is in integer format). Returns TRUE if successful, else FALSE.
 366  */
 367 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 368 {
 369     FLOAT_POINT floatPoint;
 370
 371     /* Perform operation with floating point */
 372     floatPoint.x=(FLOAT)point->x;
 373     floatPoint.y=(FLOAT)point->y;
 374     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 375         return FALSE;
 376
 377     /* Round to integers */
 378     point->x = GDI_ROUND(floatPoint.x);
 379     point->y = GDI_ROUND(floatPoint.y);
 380
 381     return TRUE;
 382 }
 383
 384 /* Performs a world-to-viewport transformation on the specified point (which
 385  * is in floating point format).
 386  */
 387 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 388 {
 389     FLOAT x, y;
 390
 391     /* Perform the transformation */
 392     x = point->x;
 393     y = point->y;
 394     point->x = x * dc->w.xformWorld2Vport.eM11 +
 395                y * dc->w.xformWorld2Vport.eM21 +
 396                dc->w.xformWorld2Vport.eDx;
 397     point->y = x * dc->w.xformWorld2Vport.eM12 +
 398                y * dc->w.xformWorld2Vport.eM22 +
 399                dc->w.xformWorld2Vport.eDy;
 400 }
 401
 402 /* Performs a world-to-viewport transformation on the specified point (which
 403  * is in integer format).
 404  */
 405 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 406 {
 407     FLOAT_POINT floatPoint;
 408
 409     /* Perform operation with floating point */
 410     floatPoint.x=(FLOAT)point->x;
 411     floatPoint.y=(FLOAT)point->y;
 412     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 413
 414     /* Round to integers */
 415     point->x = GDI_ROUND(floatPoint.x);
 416     point->y = GDI_ROUND(floatPoint.y);
 417 }
 418
 419 #define XDPTOLP(dc,x) \
 420     (MulDiv(((x)-(dc)->vportOrgX), (dc)->wndExtX, (dc)->vportExtX) + (dc)->wndOrgX)
 421 #define YDPTOLP(dc,y) \
 422     (MulDiv(((y)-(dc)->vportOrgY), (dc)->wndExtY, (dc)->vportExtY) + (dc)->wndOrgY)
 423 #define XLPTODP(dc,x) \
 424     (MulDiv(((x)-(dc)->wndOrgX), (dc)->vportExtX, (dc)->wndExtX) + (dc)->vportOrgX)
 425 #define YLPTODP(dc,y) \
 426     (MulDiv(((y)-(dc)->wndOrgY), (dc)->vportExtY, (dc)->wndExtY) + (dc)->vportOrgY)
 427
 428   /* Device <-> logical size conversion */
 429
 430 #define XDSTOLS(dc,x) \
 431     MulDiv((x), (dc)->wndExtX, (dc)->vportExtX)
 432 #define YDSTOLS(dc,y) \
 433     MulDiv((y), (dc)->wndExtY, (dc)->vportExtY)
 434 #define XLSTODS(dc,x) \
 435     MulDiv((x), (dc)->vportExtX, (dc)->wndExtX)
 436 #define YLSTODS(dc,y) \
 437     MulDiv((y), (dc)->vportExtY, (dc)->wndExtY)
 438
 439   /* GDI local heap */
 440
 441 extern WORD GDI_HeapSel;
 442
 443 #define GDI_HEAP_ALLOC(size) \
 444             LOCAL_Alloc( GDI_HeapSel, LMEM_FIXED, (size) )
 445 #define GDI_HEAP_ALLOC_MOVEABLE(size) \
 446             LOCAL_Alloc( GDI_HeapSel, LMEM_MOVEABLE, (size) )
 447 #define GDI_HEAP_REALLOC(handle,size) \
 448             LOCAL_ReAlloc( GDI_HeapSel, (handle), (size), LMEM_FIXED )
 449 #define GDI_HEAP_FREE(handle) \
 450             LOCAL_Free( GDI_HeapSel, (handle) )
 451
 452 #define GDI_HEAP_LOCK(handle) \
 453             LOCAL_Lock( GDI_HeapSel, (handle) )
 454 #define GDI_HEAP_LOCK_SEGPTR(handle) \
 455             LOCAL_LockSegptr( GDI_HeapSel, (handle) )
 456 #define GDI_HEAP_UNLOCK(handle) \
 457     ((((HGDIOBJ16)(handle) >= FIRST_STOCK_HANDLE) && \
 458       ((HGDIOBJ16)(handle)<=LAST_STOCK_HANDLE)) ? \
 459       0 : LOCAL_Unlock( GDI_HeapSel, (handle) ))
 460
 461 extern BOOL GDI_Init(void);
 462 extern HGDIOBJ16 GDI_AllocObject( WORD, WORD );
 463 extern BOOL GDI_FreeObject( HGDIOBJ16 );
 464 extern GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ16, WORD );
 465
 466 extern BOOL DRIVER_RegisterDriver( LPCSTR name, const DC_FUNCTIONS *funcs );
 467 extern const DC_FUNCTIONS *DRIVER_FindDriver( LPCSTR name );
 468 extern BOOL DRIVER_UnregisterDriver( LPCSTR name );
 469 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 470 #endif  /* __WINE_GDI_H */