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     FARPROC16     lpfnPrint;         /* 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 typedef struct tagDC
 141 {
 142     GDIOBJHDR      header;
 143     HDC          hSelf;            /* Handle to this DC */
 144     const struct tagDC_FUNCS *funcs; /* DC function table */
 145     void          *physDev;          /* Physical device (driver-specific) */
 146     INT          saveLevel;
 147     DWORD          dwHookData;
 148     FARPROC16      hookProc;
 149
 150     INT          wndOrgX;          /* Window origin */
 151     INT          wndOrgY;
 152     INT          wndExtX;          /* Window extent */
 153     INT          wndExtY;
 154     INT          vportOrgX;        /* Viewport origin */
 155     INT          vportOrgY;
 156     INT          vportExtX;        /* Viewport extent */
 157     INT          vportExtY;
 158
 159     WIN_DC_INFO w;
 160 } DC;
 161
 162 /* Device functions for the Wine driver interface */
 163
 164 typedef INT (*DEVICEFONTENUMPROC)(LPENUMLOGFONT16,LPNEWTEXTMETRIC16,UINT16,LPARAM);
 165
 166 typedef struct tagDC_FUNCS
 167 {
 168     INT      (*pAbortDoc)(DC*);
 169     BOOL     (*pArc)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 170     BOOL     (*pBitBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,DWORD);
 171     LONG     (*pBitmapBits)(HBITMAP,void*,LONG,WORD);
 172     BOOL     (*pChord)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 173     BOOL     (*pCreateBitmap)(HBITMAP);
 174     BOOL     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODEA*);
 175     HBITMAP  (*pCreateDIBSection)(DC *,BITMAPINFO *,UINT,LPVOID *,HANDLE,
 176                                   DWORD);
 177     HBITMAP16 (*pCreateDIBSection16)(DC *,BITMAPINFO *,UINT16,SEGPTR *,HANDLE,
 178                                      DWORD);
 179     BOOL     (*pDeleteDC)(DC*);
 180     BOOL     (*pDeleteObject)(HGDIOBJ);
 181     DWORD    (*pDeviceCapabilities)(LPCSTR,LPCSTR,WORD,LPSTR,LPDEVMODEA);
 182     BOOL     (*pEllipse)(DC*,INT,INT,INT,INT);
 183     INT      (*pEndDoc)(DC*);
 184     INT      (*pEndPage)(DC*);
 185     BOOL     (*pEnumDeviceFonts)(DC*,LPLOGFONT16,DEVICEFONTENUMPROC,LPARAM);
 186     INT      (*pEscape)(DC*,INT,INT,SEGPTR,SEGPTR);
 187     INT      (*pExcludeClipRect)(DC*,INT,INT,INT,INT);
 188     INT      (*pExtDeviceMode)(HWND,LPDEVMODEA,LPSTR,LPSTR,LPDEVMODEA,LPSTR,
 189                                DWORD);
 190     BOOL     (*pExtFloodFill)(DC*,INT,INT,COLORREF,UINT);
 191     BOOL     (*pExtTextOut)(DC*,INT,INT,UINT,const RECT*,LPCSTR,UINT,
 192                             const INT*);
 193     BOOL     (*pFillRgn)(DC*,HRGN,HBRUSH);
 194     BOOL     (*pFrameRgn)(DC*,HRGN,HBRUSH,INT,INT);
 195     BOOL     (*pGetCharWidth)(DC*,UINT,UINT,LPINT);
 196     COLORREF (*pGetPixel)(DC*,INT,INT);
 197     BOOL     (*pGetTextExtentPoint)(DC*,LPCSTR,INT,LPSIZE);
 198     BOOL     (*pGetTextMetrics)(DC*,TEXTMETRICA*);
 199     INT      (*pIntersectClipRect)(DC*,INT,INT,INT,INT);
 200     BOOL     (*pInvertRgn)(DC*,HRGN);
 201     BOOL     (*pLineTo)(DC*,INT,INT);
 202     HANDLE   (*pLoadOEMResource)(WORD,WORD);
 203     BOOL     (*pMoveToEx)(DC*,INT,INT,LPPOINT);
 204     INT      (*pOffsetClipRgn)(DC*,INT,INT);
 205     BOOL     (*pOffsetViewportOrg)(DC*,INT,INT);
 206     BOOL     (*pOffsetWindowOrg)(DC*,INT,INT);
 207     BOOL     (*pPaintRgn)(DC*,HRGN);
 208     BOOL     (*pPatBlt)(DC*,INT,INT,INT,INT,DWORD);
 209     BOOL     (*pPie)(DC*,INT,INT,INT,INT,INT,INT,INT,INT);
 210     BOOL     (*pPolyPolygon)(DC*,const POINT*,const INT*,UINT);
 211     BOOL     (*pPolyPolyline)(DC*,const POINT*,const DWORD*,DWORD);
 212     BOOL     (*pPolygon)(DC*,const POINT*,INT);
 213     BOOL     (*pPolyline)(DC*,const POINT*,INT);
 214     BOOL     (*pPolyBezier)(DC*,POINT, const POINT*,DWORD);
 215     UINT     (*pRealizePalette)(DC*);
 216     BOOL     (*pRectangle)(DC*,INT,INT,INT,INT);
 217     BOOL     (*pRestoreDC)(DC*,INT);
 218     BOOL     (*pRoundRect)(DC*,INT,INT,INT,INT,INT,INT);
 219     INT      (*pSaveDC)(DC*);
 220     BOOL     (*pScaleViewportExt)(DC*,INT,INT,INT,INT);
 221     BOOL     (*pScaleWindowExt)(DC*,INT,INT,INT,INT);
 222     INT      (*pSelectClipRgn)(DC*,HRGN);
 223     HANDLE   (*pSelectObject)(DC*,HANDLE);
 224     HPALETTE (*pSelectPalette)(DC*,HPALETTE,BOOL);
 225     COLORREF (*pSetBkColor)(DC*,COLORREF);
 226     INT      (*pSetBkMode)(DC*,INT);
 227     VOID     (*pSetDeviceClipping)(DC*);
 228     INT      (*pSetDIBitsToDevice)(DC*,INT,INT,DWORD,DWORD,INT,INT,UINT,UINT,
 229                                    LPCVOID,const BITMAPINFO*,UINT);
 230     INT      (*pSetMapMode)(DC*,INT);
 231     DWORD    (*pSetMapperFlags)(DC*,DWORD);
 232     COLORREF (*pSetPixel)(DC*,INT,INT,COLORREF);
 233     INT      (*pSetPolyFillMode)(DC*,INT);
 234     INT      (*pSetROP2)(DC*,INT);
 235     INT      (*pSetRelAbs)(DC*,INT);
 236     INT      (*pSetStretchBltMode)(DC*,INT);
 237     UINT     (*pSetTextAlign)(DC*,UINT);
 238     INT      (*pSetTextCharacterExtra)(DC*,INT);
 239     DWORD    (*pSetTextColor)(DC*,DWORD);
 240     INT      (*pSetTextJustification)(DC*,INT,INT);
 241     BOOL     (*pSetViewportExt)(DC*,INT,INT);
 242     BOOL     (*pSetViewportOrg)(DC*,INT,INT);
 243     BOOL     (*pSetWindowExt)(DC*,INT,INT);
 244     BOOL     (*pSetWindowOrg)(DC*,INT,INT);
 245     INT      (*pStartDoc)(DC*,const DOCINFOA*);
 246     INT      (*pStartPage)(DC*);
 247     BOOL     (*pStretchBlt)(DC*,INT,INT,INT,INT,DC*,INT,INT,INT,INT,DWORD);
 248     INT      (*pStretchDIBits)(DC*,INT,INT,INT,INT,INT,INT,INT,INT,
 249                                const void *,const BITMAPINFO *,UINT,DWORD);
 250 } DC_FUNCTIONS;
 251
 252   /* LoadOEMResource types */
 253 #define OEM_BITMAP  1
 254 #define OEM_CURSOR  2
 255 #define OEM_ICON    3
 256
 257   /* DC hook codes */
 258 #define DCHC_INVALIDVISRGN      0x0001
 259 #define DCHC_DELETEDC           0x0002
 260
 261 #define DCHF_INVALIDATEVISRGN   0x0001
 262 #define DCHF_VALIDATEVISRGN     0x0002
 263
 264   /* DC flags */
 265 #define DC_MEMORY     0x0001   /* It is a memory DC */
 266 #define DC_SAVED      0x0002   /* It is a saved DC */
 267 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 268 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 269
 270   /* Last 32 bytes are reserved for stock object handles */
 271 #define GDI_HEAP_SIZE               0xffe0
 272
 273   /* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
 274 #define FIRST_STOCK_HANDLE          GDI_HEAP_SIZE
 275
 276   /* Stock objects handles */
 277
 278 #define NB_STOCK_OBJECTS          (DEFAULT_GUI_FONT + 1)
 279
 280 #define STOCK_WHITE_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
 281 #define STOCK_LTGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
 282 #define STOCK_GRAY_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
 283 #define STOCK_DKGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
 284 #define STOCK_BLACK_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
 285 #define STOCK_NULL_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
 286 #define STOCK_HOLLOW_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
 287 #define STOCK_WHITE_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
 288 #define STOCK_BLACK_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
 289 #define STOCK_NULL_PEN          ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
 290 #define STOCK_OEM_FIXED_FONT    ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
 291 #define STOCK_ANSI_FIXED_FONT   ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
 292 #define STOCK_ANSI_VAR_FONT     ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
 293 #define STOCK_SYSTEM_FONT       ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
 294 #define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
 295 #define STOCK_DEFAULT_PALETTE   ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
 296 #define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
 297 #define STOCK_DEFAULT_GUI_FONT  ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
 298
 299 #define FIRST_STOCK_FONT        STOCK_OEM_FIXED_FONT
 300 #define LAST_STOCK_FONT         STOCK_DEFAULT_GUI_FONT
 301
 302 #define LAST_STOCK_HANDLE       ((DWORD)STOCK_DEFAULT_GUI_FONT)
 303
 304   /* Device <-> logical coords conversion */
 305
 306 /* A floating point version of the POINT structure */
 307 typedef struct tagFLOAT_POINT
 308 {
 309    FLOAT x, y;
 310 } FLOAT_POINT;
 311
 312 /* Rounds a floating point number to integer. The world-to-viewport
 313  * transformation process is done in floating point internally. This function
 314  * is then used to round these coordinates to integer values.
 315  */
 316 static inline INT WINE_UNUSED GDI_ROUND(FLOAT val)
 317 {
 318    return (int)floor(val + 0.5);
 319 }
 320
 321 /* Performs a viewport-to-world transformation on the specified point (which
 322  * is in floating point format). Returns TRUE if successful, else FALSE.
 323  */
 324 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 325 {
 326     FLOAT x, y;
 327
 328     /* Check that the viewport-to-world transformation is valid */
 329     if (!dc->w.vport2WorldValid)
 330         return FALSE;
 331
 332     /* Perform the transformation */
 333     x = point->x;
 334     y = point->y;
 335     point->x = x * dc->w.xformVport2World.eM11 +
 336                y * dc->w.xformVport2World.eM21 +
 337                dc->w.xformVport2World.eDx;
 338     point->y = x * dc->w.xformVport2World.eM12 +
 339                y * dc->w.xformVport2World.eM22 +
 340                dc->w.xformVport2World.eDy;
 341
 342     return TRUE;
 343 }
 344
 345 /* Performs a viewport-to-world transformation on the specified point (which
 346  * is in integer format). Returns TRUE if successful, else FALSE.
 347  */
 348 static inline BOOL WINE_UNUSED INTERNAL_DPTOLP(DC *dc, LPPOINT point)
 349 {
 350     FLOAT_POINT floatPoint;
 351
 352     /* Perform operation with floating point */
 353     floatPoint.x=(FLOAT)point->x;
 354     floatPoint.y=(FLOAT)point->y;
 355     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 356         return FALSE;
 357
 358     /* Round to integers */
 359     point->x = GDI_ROUND(floatPoint.x);
 360     point->y = GDI_ROUND(floatPoint.y);
 361
 362     return TRUE;
 363 }
 364
 365 /* Performs a world-to-viewport transformation on the specified point (which
 366  * is in floating point format).
 367  */
 368 static inline void WINE_UNUSED INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 369 {
 370     FLOAT x, y;
 371
 372     /* Perform the transformation */
 373     x = point->x;
 374     y = point->y;
 375     point->x = x * dc->w.xformWorld2Vport.eM11 +
 376                y * dc->w.xformWorld2Vport.eM21 +
 377                dc->w.xformWorld2Vport.eDx;
 378     point->y = x * dc->w.xformWorld2Vport.eM12 +
 379                y * dc->w.xformWorld2Vport.eM22 +
 380                dc->w.xformWorld2Vport.eDy;
 381 }
 382
 383 /* Performs a world-to-viewport transformation on the specified point (which
 384  * is in integer format).
 385  */
 386 static inline void WINE_UNUSED INTERNAL_LPTODP(DC *dc, LPPOINT point)
 387 {
 388     FLOAT_POINT floatPoint;
 389
 390     /* Perform operation with floating point */
 391     floatPoint.x=(FLOAT)point->x;
 392     floatPoint.y=(FLOAT)point->y;
 393     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 394
 395     /* Round to integers */
 396     point->x = GDI_ROUND(floatPoint.x);
 397     point->y = GDI_ROUND(floatPoint.y);
 398 }
 399
 400 #define XDPTOLP(dc,x) \
 401     (((x)-(dc)->vportOrgX) * (dc)->wndExtX / (dc)->vportExtX+(dc)->wndOrgX)
 402 #define YDPTOLP(dc,y) \
 403     (((y)-(dc)->vportOrgY) * (dc)->wndExtY / (dc)->vportExtY+(dc)->wndOrgY)
 404 #define XLPTODP(dc,x) \
 405     (((x)-(dc)->wndOrgX) * (dc)->vportExtX / (dc)->wndExtX+(dc)->vportOrgX)
 406 #define YLPTODP(dc,y) \
 407     (((y)-(dc)->wndOrgY) * (dc)->vportExtY / (dc)->wndExtY+(dc)->vportOrgY)
 408
 409   /* Device <-> logical size conversion */
 410
 411 #define XDSTOLS(dc,x) \
 412     ((x) * (dc)->wndExtX / (dc)->vportExtX)
 413 #define YDSTOLS(dc,y) \
 414     ((y) * (dc)->wndExtY / (dc)->vportExtY)
 415 #define XLSTODS(dc,x) \
 416     ((x) * (dc)->vportExtX / (dc)->wndExtX)
 417 #define YLSTODS(dc,y) \
 418     ((y) * (dc)->vportExtY / (dc)->wndExtY)
 419
 420   /* GDI local heap */
 421
 422 extern WORD GDI_HeapSel;
 423
 424 #define GDI_HEAP_ALLOC(size) \
 425             LOCAL_Alloc( GDI_HeapSel, LMEM_FIXED, (size) )
 426 #define GDI_HEAP_ALLOC_MOVEABLE(size) \
 427             LOCAL_Alloc( GDI_HeapSel, LMEM_MOVEABLE, (size) )
 428 #define GDI_HEAP_REALLOC(handle,size) \
 429             LOCAL_ReAlloc( GDI_HeapSel, (handle), (size), LMEM_FIXED )
 430 #define GDI_HEAP_FREE(handle) \
 431             LOCAL_Free( GDI_HeapSel, (handle) )
 432
 433 #define GDI_HEAP_LOCK(handle) \
 434             LOCAL_Lock( GDI_HeapSel, (handle) )
 435 #define GDI_HEAP_LOCK_SEGPTR(handle) \
 436             LOCAL_LockSegptr( GDI_HeapSel, (handle) )
 437 #define GDI_HEAP_UNLOCK(handle) \
 438     ((((HGDIOBJ16)(handle) >= FIRST_STOCK_HANDLE) && \
 439       ((HGDIOBJ16)(handle)<=LAST_STOCK_HANDLE)) ? \
 440       0 : LOCAL_Unlock( GDI_HeapSel, (handle) ))
 441
 442 extern BOOL GDI_Init(void);
 443 extern HGDIOBJ16 GDI_AllocObject( WORD, WORD );
 444 extern BOOL GDI_FreeObject( HGDIOBJ16 );
 445 extern GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ16, WORD );
 446
 447 extern BOOL DRIVER_RegisterDriver( LPCSTR name, const DC_FUNCTIONS *funcs );
 448 extern const DC_FUNCTIONS *DRIVER_FindDriver( LPCSTR name );
 449 extern BOOL DRIVER_UnregisterDriver( LPCSTR name );
 450 extern BOOL DRIVER_GetDriverName( LPCSTR device, LPSTR driver, DWORD size );
 451 #endif  /* __WINE_GDI_H */