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 "windows.h"
  11 #include "ldt.h"
  12 #include "local.h"
  13 #include "path.h"
  14 #include <math.h>
  15
  16   /* GDI objects magic numbers */
  17 #define PEN_MAGIC             0x4f47
  18 #define BRUSH_MAGIC           0x4f48
  19 #define FONT_MAGIC            0x4f49
  20 #define PALETTE_MAGIC         0x4f4a
  21 #define BITMAP_MAGIC          0x4f4b
  22 #define REGION_MAGIC          0x4f4c
  23 #define DC_MAGIC              0x4f4d
  24 #define DISABLED_DC_MAGIC     0x4f4e
  25 #define META_DC_MAGIC         0x4f4f
  26 #define METAFILE_MAGIC        0x4f50
  27 #define METAFILE_DC_MAGIC     0x4f51
  28 #define MAGIC_DONTCARE        0xffff
  29
  30 typedef struct tagGDIOBJHDR
  31 {
  32     HANDLE16    hNext;
  33     WORD        wMagic;
  34     DWORD       dwCount;
  35 } GDIOBJHDR;
  36
  37
  38 #define OBJ_PEN             1
  39 #define OBJ_BRUSH           2
  40 #define OBJ_DC              3
  41 #define OBJ_METADC          4
  42 #define OBJ_PAL             5
  43 #define OBJ_FONT            6
  44 #define OBJ_BITMAP          7
  45 #define OBJ_REGION          8
  46 #define OBJ_METAFILE        9
  47 #define OBJ_MEMDC           10
  48 #define OBJ_EXTPEN          11
  49 #define OBJ_ENHMETADC       12
  50 #define OBJ_ENHMETAFILE     13
  51
  52
  53 typedef struct tagDeviceCaps
  54 {
  55     WORD   version;       /*   0: driver version */
  56     WORD   technology;    /*   2: device technology */
  57     WORD   horzSize;      /*   4: width of display in mm */
  58     WORD   vertSize;      /*   6: height of display in mm */
  59     WORD   horzRes;       /*   8: width of display in pixels */
  60     WORD   vertRes;       /*  10: width of display in pixels */
  61     WORD   bitsPixel;     /*  12: bits per pixel */
  62     WORD   planes;        /*  14: color planes */
  63     WORD   numBrushes;    /*  16: device-specific brushes */
  64     WORD   numPens;       /*  18: device-specific pens */
  65     WORD   numMarkers;    /*  20: device-specific markers */
  66     WORD   numFonts;      /*  22: device-specific fonts */
  67     WORD   numColors;     /*  24: size of color table */
  68     WORD   pdeviceSize;   /*  26: size of PDEVICE structure */
  69     WORD   curveCaps;     /*  28: curve capabilities */
  70     WORD   lineCaps;      /*  30: line capabilities */
  71     WORD   polygonalCaps; /*  32: polygon capabilities */
  72     WORD   textCaps;      /*  34: text capabilities */
  73     WORD   clipCaps;      /*  36: clipping capabilities */
  74     WORD   rasterCaps;    /*  38: raster capabilities */
  75     WORD   aspectX;       /*  40: relative width of device pixel */
  76     WORD   aspectY;       /*  42: relative height of device pixel */
  77     WORD   aspectXY;      /*  44: relative diagonal width of device pixel */
  78     WORD   pad1[21];      /*  46-86: reserved */
  79     WORD   logPixelsX;    /*  88: pixels / logical X inch */
  80     WORD   logPixelsY;    /*  90: pixels / logical Y inch */
  81     WORD   pad2[6];       /*  92-102: reserved */
  82     WORD   sizePalette;   /* 104: entries in system palette */
  83     WORD   numReserved;   /* 106: reserved entries */
  84     WORD   colorRes;      /* 108: color resolution */
  85 } DeviceCaps;
  86
  87
  88   /* Device independent DC information */
  89 typedef struct
  90 {
  91     int           flags;
  92     const DeviceCaps *devCaps;
  93
  94     HRGN16        hClipRgn;     /* Clip region (may be 0) */
  95     HRGN16        hVisRgn;      /* Visible region (must never be 0) */
  96     HRGN16        hGCClipRgn;   /* GC clip region (ClipRgn AND VisRgn) */
  97     HPEN16        hPen;
  98     HBRUSH16      hBrush;
  99     HFONT16       hFont;
 100     HBITMAP16     hBitmap;
 101     HBITMAP16     hFirstBitmap; /* Bitmap selected at creation of the DC */
 102     HANDLE16      hDevice;
 103     HPALETTE16    hPalette;
 104
 105     GdiPath       path;
 106
 107     WORD          ROPmode;
 108     WORD          polyFillMode;
 109     WORD          stretchBltMode;
 110     WORD          relAbsMode;
 111     WORD          backgroundMode;
 112     COLORREF      backgroundColor;
 113     COLORREF      textColor;
 114     short         brushOrgX;
 115     short         brushOrgY;
 116
 117     WORD          textAlign;         /* Text alignment from SetTextAlign() */
 118     short         charExtra;         /* Spacing from SetTextCharacterExtra() */
 119     short         breakTotalExtra;   /* Total extra space for justification */
 120     short         breakCount;        /* Break char. count */
 121     short         breakExtra;        /* breakTotalExtra / breakCount */
 122     short         breakRem;          /* breakTotalExtra % breakCount */
 123
 124     RECT32        totalExtent;
 125     BYTE          bitsPerPixel;
 126
 127     INT32         MapMode;
 128     INT32         GraphicsMode;      /* Graphics mode */
 129     INT32         DCOrgX;            /* DC origin */
 130     INT32         DCOrgY;
 131     FARPROC16     lpfnPrint;         /* AbortProc for Printing */
 132     INT32         CursPosX;          /* Current position */
 133     INT32         CursPosY;
 134     INT32         ArcDirection;
 135     XFORM         xformWorld2Wnd;    /* World-to-window transformation */
 136     XFORM         xformWorld2Vport;  /* World-to-viewport transformation */
 137     XFORM         xformVport2World;  /* Inverse of the above transformation */
 138     BOOL32        vport2WorldValid;  /* Is xformVport2World valid? */
 139 } WIN_DC_INFO;
 140
 141 typedef struct tagDC
 142 {
 143     GDIOBJHDR      header;
 144     HDC32          hSelf;            /* Handle to this DC */
 145     const struct tagDC_FUNCS *funcs; /* DC function table */
 146     void          *physDev;          /* Physical device (driver-specific) */
 147     INT32          saveLevel;
 148     DWORD          dwHookData;
 149     FARPROC16      hookProc;
 150
 151     INT32          wndOrgX;          /* Window origin */
 152     INT32          wndOrgY;
 153     INT32          wndExtX;          /* Window extent */
 154     INT32          wndExtY;
 155     INT32          vportOrgX;        /* Viewport origin */
 156     INT32          vportOrgY;
 157     INT32          vportExtX;        /* Viewport extent */
 158     INT32          vportExtY;
 159
 160     WIN_DC_INFO w;
 161 } DC;
 162
 163 /* Device functions for the Wine driver interface */
 164
 165 typedef INT32 (*DEVICEFONTENUMPROC)(LPENUMLOGFONT16,LPNEWTEXTMETRIC16,UINT16,LPARAM);
 166
 167 typedef struct tagDC_FUNCS
 168 {
 169     BOOL32     (*pArc)(DC*,INT32,INT32,INT32,INT32,INT32,INT32,INT32,INT32);
 170     BOOL32     (*pBitBlt)(DC*,INT32,INT32,INT32,INT32,DC*,INT32,INT32,DWORD);
 171     LONG       (*pBitmapBits)(HBITMAP32,void*,LONG,WORD);
 172     BOOL32     (*pChord)(DC*,INT32,INT32,INT32,INT32,INT32,INT32,INT32,INT32);
 173     BOOL32     (*pCreateBitmap)(HBITMAP32);
 174     BOOL32     (*pCreateDC)(DC*,LPCSTR,LPCSTR,LPCSTR,const DEVMODE16*);
 175     BOOL32     (*pDeleteDC)(DC*);
 176     BOOL32     (*pDeleteObject)(HGDIOBJ32);
 177     BOOL32     (*pEllipse)(DC*,INT32,INT32,INT32,INT32);
 178     BOOL32     (*pEnumDeviceFonts)(DC*,LPLOGFONT16,DEVICEFONTENUMPROC,LPARAM);
 179     INT32      (*pEscape)(DC*,INT32,INT32,SEGPTR,SEGPTR);
 180     INT32      (*pExcludeClipRect)(DC*,INT32,INT32,INT32,INT32);
 181     INT32      (*pExcludeVisRect)(DC*,INT32,INT32,INT32,INT32);
 182     BOOL32     (*pExtFloodFill)(DC*,INT32,INT32,COLORREF,UINT32);
 183     BOOL32     (*pExtTextOut)(DC*,INT32,INT32,UINT32,const RECT32*,LPCSTR,UINT32,const INT32*);
 184     BOOL32     (*pGetCharWidth)(DC*,UINT32,UINT32,LPINT32);
 185     COLORREF   (*pGetPixel)(DC*,INT32,INT32);
 186     BOOL32     (*pGetTextExtentPoint)(DC*,LPCSTR,INT32,LPSIZE32);
 187     BOOL32     (*pGetTextMetrics)(DC*,TEXTMETRIC32A*);
 188     INT32      (*pIntersectClipRect)(DC*,INT32,INT32,INT32,INT32);
 189     INT32      (*pIntersectVisRect)(DC*,INT32,INT32,INT32,INT32);
 190     BOOL32     (*pLineTo)(DC*,INT32,INT32);
 191     HANDLE32   (*pLoadOEMResource)(WORD,WORD);
 192     BOOL32     (*pMoveToEx)(DC*,INT32,INT32,LPPOINT32);
 193     INT32      (*pOffsetClipRgn)(DC*,INT32,INT32);
 194     BOOL32     (*pOffsetViewportOrg)(DC*,INT32,INT32);
 195     BOOL32     (*pOffsetWindowOrg)(DC*,INT32,INT32);
 196     BOOL32     (*pPaintRgn)(DC*,HRGN32);
 197     BOOL32     (*pPatBlt)(DC*,INT32,INT32,INT32,INT32,DWORD);
 198     BOOL32     (*pPie)(DC*,INT32,INT32,INT32,INT32,INT32,INT32,INT32,INT32);
 199     BOOL32     (*pPolyPolygon)(DC*,const POINT32*,const INT32*,UINT32);
 200     BOOL32     (*pPolyPolyline)(DC*,const POINT32*,const DWORD*,DWORD);
 201     BOOL32     (*pPolygon)(DC*,const POINT32*,INT32);
 202     BOOL32     (*pPolyline)(DC*,const POINT32*,INT32);
 203     BOOL32     (*pPolyBezier)(DC*,POINT32, const POINT32*,DWORD);
 204     UINT32     (*pRealizePalette)(DC*);
 205     BOOL32     (*pRectangle)(DC*,INT32,INT32,INT32,INT32);
 206     BOOL32     (*pRestoreDC)(DC*,INT32);
 207     BOOL32     (*pRoundRect)(DC*,INT32,INT32,INT32,INT32,INT32,INT32);
 208     INT32      (*pSaveDC)(DC*);
 209     BOOL32     (*pScaleViewportExt)(DC*,INT32,INT32,INT32,INT32);
 210     BOOL32     (*pScaleWindowExt)(DC*,INT32,INT32,INT32,INT32);
 211     INT32      (*pSelectClipRgn)(DC*,HRGN32);
 212     HANDLE32   (*pSelectObject)(DC*,HANDLE32);
 213     HPALETTE32 (*pSelectPalette)(DC*,HPALETTE32,BOOL32);
 214     COLORREF   (*pSetBkColor)(DC*,COLORREF);
 215     WORD       (*pSetBkMode)(DC*,WORD);
 216     VOID       (*pSetDeviceClipping)(DC*);
 217     INT32      (*pSetDIBitsToDevice)(DC*,INT32,INT32,DWORD,DWORD,INT32,INT32,UINT32,UINT32,LPCVOID,const BITMAPINFO*,UINT32);
 218     INT32      (*pSetMapMode)(DC*,INT32);
 219     DWORD      (*pSetMapperFlags)(DC*,DWORD);
 220     COLORREF   (*pSetPixel)(DC*,INT32,INT32,COLORREF);
 221     WORD       (*pSetPolyFillMode)(DC*,WORD);
 222     WORD       (*pSetROP2)(DC*,WORD);
 223     WORD       (*pSetRelAbs)(DC*,WORD);
 224     WORD       (*pSetStretchBltMode)(DC*,WORD);
 225     WORD       (*pSetTextAlign)(DC*,WORD);
 226     INT32      (*pSetTextCharacterExtra)(DC*,INT32);
 227     DWORD      (*pSetTextColor)(DC*,DWORD);
 228     INT32      (*pSetTextJustification)(DC*,INT32,INT32);
 229     BOOL32     (*pSetViewportExt)(DC*,INT32,INT32);
 230     BOOL32     (*pSetViewportOrg)(DC*,INT32,INT32);
 231     BOOL32     (*pSetWindowExt)(DC*,INT32,INT32);
 232     BOOL32     (*pSetWindowOrg)(DC*,INT32,INT32);
 233     BOOL32     (*pStretchBlt)(DC*,INT32,INT32,INT32,INT32,DC*,INT32,INT32,INT32,INT32,DWORD);
 234     INT32     (*pStretchDIBits)(DC*,INT32,INT32,INT32,INT32,INT32,INT32,INT32,INT32,const void *,const BITMAPINFO *,UINT32,DWORD);
 235 } DC_FUNCTIONS;
 236
 237   /* LoadOEMResource types */
 238 #define OEM_BITMAP  1
 239 #define OEM_CURSOR  2
 240 #define OEM_ICON    3
 241
 242   /* DC hook codes */
 243 #define DCHC_INVALIDVISRGN      0x0001
 244 #define DCHC_DELETEDC           0x0002
 245
 246 #define DCHF_INVALIDATEVISRGN   0x0001
 247 #define DCHF_VALIDATEVISRGN     0x0002
 248
 249   /* DC flags */
 250 #define DC_MEMORY     0x0001   /* It is a memory DC */
 251 #define DC_SAVED      0x0002   /* It is a saved DC */
 252 #define DC_DIRTY      0x0004   /* hVisRgn has to be updated */
 253 #define DC_THUNKHOOK  0x0008   /* DC hook is in the 16-bit code */
 254
 255   /* Last 32 bytes are reserved for stock object handles */
 256 #define GDI_HEAP_SIZE               0xffe0
 257
 258   /* First handle possible for stock objects (must be >= GDI_HEAP_SIZE) */
 259 #define FIRST_STOCK_HANDLE          GDI_HEAP_SIZE
 260
 261   /* Stock objects handles */
 262
 263 #define NB_STOCK_OBJECTS          (DEFAULT_GUI_FONT + 1)
 264
 265 #define STOCK_WHITE_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+WHITE_BRUSH))
 266 #define STOCK_LTGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+LTGRAY_BRUSH))
 267 #define STOCK_GRAY_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+GRAY_BRUSH))
 268 #define STOCK_DKGRAY_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+DKGRAY_BRUSH))
 269 #define STOCK_BLACK_BRUSH       ((HBRUSH16)(FIRST_STOCK_HANDLE+BLACK_BRUSH))
 270 #define STOCK_NULL_BRUSH        ((HBRUSH16)(FIRST_STOCK_HANDLE+NULL_BRUSH))
 271 #define STOCK_HOLLOW_BRUSH      ((HBRUSH16)(FIRST_STOCK_HANDLE+HOLLOW_BRUSH))
 272 #define STOCK_WHITE_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+WHITE_PEN))
 273 #define STOCK_BLACK_PEN         ((HPEN16)(FIRST_STOCK_HANDLE+BLACK_PEN))
 274 #define STOCK_NULL_PEN          ((HPEN16)(FIRST_STOCK_HANDLE+NULL_PEN))
 275 #define STOCK_OEM_FIXED_FONT    ((HFONT16)(FIRST_STOCK_HANDLE+OEM_FIXED_FONT))
 276 #define STOCK_ANSI_FIXED_FONT   ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_FIXED_FONT))
 277 #define STOCK_ANSI_VAR_FONT     ((HFONT16)(FIRST_STOCK_HANDLE+ANSI_VAR_FONT))
 278 #define STOCK_SYSTEM_FONT       ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FONT))
 279 #define STOCK_DEVICE_DEFAULT_FONT ((HFONT16)(FIRST_STOCK_HANDLE+DEVICE_DEFAULT_FONT))
 280 #define STOCK_DEFAULT_PALETTE   ((HPALETTE16)(FIRST_STOCK_HANDLE+DEFAULT_PALETTE))
 281 #define STOCK_SYSTEM_FIXED_FONT ((HFONT16)(FIRST_STOCK_HANDLE+SYSTEM_FIXED_FONT))
 282 #define STOCK_DEFAULT_GUI_FONT  ((HFONT16)(FIRST_STOCK_HANDLE+DEFAULT_GUI_FONT))
 283
 284 #define FIRST_STOCK_FONT        STOCK_OEM_FIXED_FONT
 285 #define LAST_STOCK_FONT         STOCK_DEFAULT_GUI_FONT
 286
 287 #define LAST_STOCK_HANDLE       ((DWORD)STOCK_DEFAULT_GUI_FONT)
 288
 289   /* Device <-> logical coords conversion */
 290
 291 /* A floating point version of the POINT structure */
 292 typedef struct tagFLOAT_POINT
 293 {
 294    FLOAT x, y;
 295 } FLOAT_POINT;
 296
 297 /* Rounds a floating point number to integer. The world-to-viewport
 298  * transformation process is done in floating point internally. This function
 299  * is then used to round these coordinates to integer values.
 300  */
 301 static __inline__ INT32 GDI_ROUND(FLOAT val)
 302 {
 303    return (int)floor(val + 0.5);
 304 }
 305
 306 /* Performs a viewport-to-world transformation on the specified point (which
 307  * is in floating point format). Returns TRUE if successful, else FALSE.
 308  */
 309 static __inline__ BOOL32 INTERNAL_DPTOLP_FLOAT(DC *dc, FLOAT_POINT *point)
 310 {
 311     FLOAT x, y;
 312
 313     /* Check that the viewport-to-world transformation is valid */
 314     if (!dc->w.vport2WorldValid)
 315         return FALSE;
 316
 317     /* Perform the transformation */
 318     x = point->x;
 319     y = point->y;
 320     point->x = x * dc->w.xformVport2World.eM11 +
 321                y * dc->w.xformVport2World.eM21 +
 322                dc->w.xformVport2World.eDx;
 323     point->y = x * dc->w.xformVport2World.eM12 +
 324                y * dc->w.xformVport2World.eM22 +
 325                dc->w.xformVport2World.eDy;
 326
 327     return TRUE;
 328 }
 329
 330 /* Performs a viewport-to-world transformation on the specified point (which
 331  * is in integer format). Returns TRUE if successful, else FALSE.
 332  */
 333 static __inline__ BOOL32 INTERNAL_DPTOLP(DC *dc, LPPOINT32 point)
 334 {
 335     FLOAT_POINT floatPoint;
 336
 337     /* Perform operation with floating point */
 338     floatPoint.x=(FLOAT)point->x;
 339     floatPoint.y=(FLOAT)point->y;
 340     if (!INTERNAL_DPTOLP_FLOAT(dc, &floatPoint))
 341         return FALSE;
 342
 343     /* Round to integers */
 344     point->x = GDI_ROUND(floatPoint.x);
 345     point->y = GDI_ROUND(floatPoint.y);
 346
 347     return TRUE;
 348 }
 349
 350 /* Performs a world-to-viewport transformation on the specified point (which
 351  * is in floating point format).
 352  */
 353 static __inline__ void INTERNAL_LPTODP_FLOAT(DC *dc, FLOAT_POINT *point)
 354 {
 355     FLOAT x, y;
 356
 357     /* Perform the transformation */
 358     x = point->x;
 359     y = point->y;
 360     point->x = x * dc->w.xformWorld2Vport.eM11 +
 361                y * dc->w.xformWorld2Vport.eM21 +
 362                dc->w.xformWorld2Vport.eDx;
 363     point->y = x * dc->w.xformWorld2Vport.eM12 +
 364                y * dc->w.xformWorld2Vport.eM22 +
 365                dc->w.xformWorld2Vport.eDy;
 366 }
 367
 368 /* Performs a world-to-viewport transformation on the specified point (which
 369  * is in integer format).
 370  */
 371 static __inline__ void INTERNAL_LPTODP(DC *dc, LPPOINT32 point)
 372 {
 373     FLOAT_POINT floatPoint;
 374
 375     /* Perform operation with floating point */
 376     floatPoint.x=(FLOAT)point->x;
 377     floatPoint.y=(FLOAT)point->y;
 378     INTERNAL_LPTODP_FLOAT(dc, &floatPoint);
 379
 380     /* Round to integers */
 381     point->x = GDI_ROUND(floatPoint.x);
 382     point->y = GDI_ROUND(floatPoint.y);
 383 }
 384
 385 #define XDPTOLP(dc,x) \
 386     (((x)-(dc)->vportOrgX) * (dc)->wndExtX / (dc)->vportExtX+(dc)->wndOrgX)
 387 #define YDPTOLP(dc,y) \
 388     (((y)-(dc)->vportOrgY) * (dc)->wndExtY / (dc)->vportExtY+(dc)->wndOrgY)
 389 #define XLPTODP(dc,x) \
 390     (((x)-(dc)->wndOrgX) * (dc)->vportExtX / (dc)->wndExtX+(dc)->vportOrgX)
 391 #define YLPTODP(dc,y) \
 392     (((y)-(dc)->wndOrgY) * (dc)->vportExtY / (dc)->wndExtY+(dc)->vportOrgY)
 393
 394   /* Device <-> logical size conversion */
 395
 396 #define XDSTOLS(dc,x) \
 397     ((x) * (dc)->wndExtX / (dc)->vportExtX)
 398 #define YDSTOLS(dc,y) \
 399     ((y) * (dc)->wndExtY / (dc)->vportExtY)
 400 #define XLSTODS(dc,x) \
 401     ((x) * (dc)->vportExtX / (dc)->wndExtX)
 402 #define YLSTODS(dc,y) \
 403     ((y) * (dc)->vportExtY / (dc)->wndExtY)
 404
 405   /* GDI local heap */
 406
 407 extern WORD GDI_HeapSel;
 408
 409 #define GDI_HEAP_ALLOC(size) \
 410             LOCAL_Alloc( GDI_HeapSel, LMEM_FIXED, (size) )
 411 #define GDI_HEAP_ALLOC_MOVEABLE(size) \
 412             LOCAL_Alloc( GDI_HeapSel, LMEM_MOVEABLE, (size) )
 413 #define GDI_HEAP_REALLOC(handle,size) \
 414             LOCAL_ReAlloc( GDI_HeapSel, (handle), (size), LMEM_FIXED )
 415 #define GDI_HEAP_FREE(handle) \
 416             LOCAL_Free( GDI_HeapSel, (handle) )
 417
 418 #define GDI_HEAP_LOCK(handle) \
 419             LOCAL_Lock( GDI_HeapSel, (handle) )
 420 #define GDI_HEAP_LOCK_SEGPTR(handle) \
 421             LOCAL_LockSegptr( GDI_HeapSel, (handle) )
 422 #define GDI_HEAP_UNLOCK(handle) \
 423     ((((HGDIOBJ16)(handle) >= FIRST_STOCK_HANDLE) && \
 424       ((HGDIOBJ16)(handle)<=LAST_STOCK_HANDLE)) ? \
 425       0 : LOCAL_Unlock( GDI_HeapSel, (handle) ))
 426
 427 extern BOOL32 GDI_Init(void);
 428 extern HGDIOBJ16 GDI_AllocObject( WORD, WORD );
 429 extern BOOL32 GDI_FreeObject( HGDIOBJ16 );
 430 extern GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ16, WORD );
 431
 432 extern BOOL32 DRIVER_RegisterDriver( LPCSTR name, const DC_FUNCTIONS *funcs );
 433 extern const DC_FUNCTIONS *DRIVER_FindDriver( LPCSTR name );
 434 extern BOOL32 DRIVER_UnregisterDriver( LPCSTR name );
 435
 436 #endif  /* __WINE_GDI_H */