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wine/objects/gdiobj.c
Alexandre Julliard 9ea19e54cb Release 970101 
Wed Jan  1 15:36:17 1997  Alexandre Julliard  <julliard@lrc.epfl.ch>

	* [controls/listbox.c]
	Use FindFirstFile/FindNextFile in LISTBOX_Directory.

	* [files/dos_fs.c]
	Rewrote FindFirstFile/FindNextFile to use DOSFS_FindNext().

	* [files/file.c] [files/directory.c]
	Use Win32 kernel objects and handles for file handles.
	Unified SearchPath() and OpenFile().

	* [loader/builtin.c]
	Moved to if1632/ directory.

	* [tools/build.c] [debugger/*] [miscemu/*]
	Win16 register functions now receive the same CONTEXT * structure
	as Win32 functions.

	* [include/sigcontext.h] [miscemu/instr.c]
	Added new macros to get register values from the SIGCONTEXT
	structure (only used for instruction emulation now).

	* [scheduler/process.c] [scheduler/thread.c] (New files)
	Allocate process and thread structures.

	* [scheduler/process.c] [win32/k32obj.c]
	Added Win32 kernel objects and handles management.

	* [loader/task.c]
	Create a Win32 process and thread for every Win16 task.

	* [misc/commdlg.c] [misc/shell.c] [windows/msgbox.c]
	Built-in resources are now in Win32 format. This also avoids
	16-bit callbacks for built-in dialogs.

	* [misc/lzexpand.c]
	Differentiate between 16-bit and 32-bit file handles.

	* [miscemu/int*.c]
	Moved all int emulation to msdos/ directory.

	* [msdos/*]
	New directory msdos/ contains all MS-DOS emulation code that can
	also be used for Winelib; this should enable Winelib apps to use
	DOS3Call and related functions.

	* [rc/winerc.c]
	A few bug fixes for Win32 resource format.

	* [windows/winpos.c]
	Hack in WINPOS_ReorderOwnerPopups() to avoid X crashed (still not
	right though).

Sun Dec 29 17:47:55 1996  O. Flebbe <flebbe@science-computing.uni-tuebingen.de>

	* [loader/pe_image.c]
	Make sure BSS of a PE_Image is zero.

Sat Dec 28 22:15:34 1996 Alex Korobka <alex@trantor.pharm.sunysb.edu>

	* [windows/scroll.c]
	ScrollWindowEx() rewrite, ScrollDC() fix.

	* [windows/nonclient.c] [controls/menu.c]
	Fixed Alt-Space crashes in dialogs.

	* [windows/event.c] [windows/message.c]
	Some changes in mouse message generation.

Thu Dec 26 09:25:24 1996  Philippe De Muyter  <phdm@info.ucl.ac.be>

	* [debugger/stabs.c]
	Dummy DEBUG_ReadExecutableDbgInfo provided for !__ELF__ case.

Tue Dec 24 00:59:05 MET 1996  Martin Buck <martin-2.buck@student.uni-ulm.de>

	* [windows/event.c]
	Changed XK_Page_{Up,Down} to XK_{Prior,Next} for X11R5
	compatibility.
1997-01-01 17:29:55 +00:00

657 lines
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/*
* GDI functions
*
* Copyright 1993 Alexandre Julliard
*/
#define NO_TRANSITION_TYPES /* This file is Win32-clean */
#include <stdlib.h>
#include <stdio.h>
#include "gdi.h"
#include "color.h"
#include "bitmap.h"
#include "brush.h"
#include "font.h"
#include "heap.h"
#include "palette.h"
#include "pen.h"
#include "region.h"
#include "stddebug.h"
#include "debug.h"
WORD GDI_HeapSel = 0;
/* Object types for EnumObjects() */
#define OBJ_PEN 1
#define OBJ_BRUSH 2
/***********************************************************************
* GDI stock objects
*/
static BRUSHOBJ WhiteBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_SOLID, RGB(255,255,255), 0 } /* logbrush */
};
static BRUSHOBJ LtGrayBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_SOLID, RGB(192,192,192), 0 } /* logbrush */
};
static BRUSHOBJ GrayBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_SOLID, RGB(128,128,128), 0 } /* logbrush */
};
static BRUSHOBJ DkGrayBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_SOLID, RGB(64,64,64), 0 } /* logbrush */
};
static BRUSHOBJ BlackBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_SOLID, RGB(0,0,0), 0 } /* logbrush */
};
static BRUSHOBJ NullBrush =
{
{ 0, BRUSH_MAGIC, 1 }, /* header */
{ BS_NULL, 0, 0 } /* logbrush */
};
static PENOBJ WhitePen =
{
{ 0, PEN_MAGIC, 1 }, /* header */
{ PS_SOLID, { 1, 0 }, RGB(255,255,255) } /* logpen */
};
static PENOBJ BlackPen =
{
{ 0, PEN_MAGIC, 1 }, /* header */
{ PS_SOLID, { 1, 0 }, RGB(0,0,0) } /* logpen */
};
static PENOBJ NullPen =
{
{ 0, PEN_MAGIC, 1 }, /* header */
{ PS_NULL, { 1, 0 }, 0 } /* logpen */
};
static FONTOBJ OEMFixedFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, OEM_CHARSET,
0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
static FONTOBJ AnsiFixedFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
static FONTOBJ AnsiVarFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "" }
};
static FONTOBJ SystemFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, ANSI_CHARSET,
0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "" }
};
static FONTOBJ DeviceDefaultFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_NORMAL, FALSE, FALSE, FALSE, ANSI_CHARSET,
0, 0, DEFAULT_QUALITY, VARIABLE_PITCH | FF_SWISS, "" }
};
static FONTOBJ SystemFixedFont =
{
{ 0, FONT_MAGIC, 1 }, /* header */
{ 12, 0, 0, 0, FW_BOLD, FALSE, FALSE, FALSE, ANSI_CHARSET,
0, 0, DEFAULT_QUALITY, FIXED_PITCH | FF_MODERN, "" }
};
static GDIOBJHDR * StockObjects[NB_STOCK_OBJECTS] =
{
(GDIOBJHDR *) &WhiteBrush,
(GDIOBJHDR *) &LtGrayBrush,
(GDIOBJHDR *) &GrayBrush,
(GDIOBJHDR *) &DkGrayBrush,
(GDIOBJHDR *) &BlackBrush,
(GDIOBJHDR *) &NullBrush,
(GDIOBJHDR *) &WhitePen,
(GDIOBJHDR *) &BlackPen,
(GDIOBJHDR *) &NullPen,
NULL,
(GDIOBJHDR *) &OEMFixedFont,
(GDIOBJHDR *) &AnsiFixedFont,
(GDIOBJHDR *) &AnsiVarFont,
(GDIOBJHDR *) &SystemFont,
(GDIOBJHDR *) &DeviceDefaultFont,
NULL, /* DEFAULT_PALETTE created by COLOR_Init */
(GDIOBJHDR *) &SystemFixedFont
};
/***********************************************************************
* GDI_Init
*
* GDI initialization.
*/
BOOL32 GDI_Init(void)
{
HPALETTE16 hpalette;
extern BOOL32 X11DRV_Init(void);
/* Initialize drivers */
if (!X11DRV_Init()) return FALSE;
/* Create default palette */
if (!(hpalette = COLOR_Init())) return FALSE;
StockObjects[DEFAULT_PALETTE] = (GDIOBJHDR *)GDI_HEAP_LIN_ADDR( hpalette );
/* Create default bitmap */
if (!BITMAP_Init()) return FALSE;
/* Initialize brush dithering */
if (!BRUSH_Init()) return FALSE;
/* Initialize fonts */
if (!FONT_Init()) return FALSE;
return TRUE;
}
/***********************************************************************
* GDI_AllocObject
*/
HGDIOBJ16 GDI_AllocObject( WORD size, WORD magic )
{
static DWORD count = 0;
GDIOBJHDR * obj;
HGDIOBJ16 handle = GDI_HEAP_ALLOC( size );
if (!handle) return 0;
obj = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
obj->hNext = 0;
obj->wMagic = magic;
obj->dwCount = ++count;
return handle;
}
/***********************************************************************
* GDI_FreeObject
*/
BOOL32 GDI_FreeObject( HGDIOBJ16 handle )
{
GDIOBJHDR * object;
/* Can't free stock objects */
if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
return TRUE;
object = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (!object) return FALSE;
object->wMagic = 0; /* Mark it as invalid */
/* Free object */
GDI_HEAP_FREE( handle );
return TRUE;
}
/***********************************************************************
* GDI_GetObjPtr
*
* Return a pointer to the GDI object associated to the handle.
* Return NULL if the object has the wrong magic number.
*/
GDIOBJHDR * GDI_GetObjPtr( HGDIOBJ16 handle, WORD magic )
{
GDIOBJHDR * ptr = NULL;
if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
else
ptr = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (!ptr) return NULL;
if ((magic != MAGIC_DONTCARE) && (ptr->wMagic != magic)) return NULL;
return ptr;
}
/***********************************************************************
* DeleteObject16 (GDI.69)
*/
BOOL16 DeleteObject16( HGDIOBJ16 obj )
{
return DeleteObject32( obj );
}
/***********************************************************************
* DeleteObject32 (GDI32.70)
*/
BOOL32 DeleteObject32( HGDIOBJ32 obj )
{
/* Check if object is valid */
GDIOBJHDR * header = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( obj );
if (!header || HIWORD(obj)) return FALSE;
dprintf_gdi(stddeb, "DeleteObject: %04x\n", obj );
/* Delete object */
switch(header->wMagic)
{
case PEN_MAGIC: return GDI_FreeObject( obj );
case BRUSH_MAGIC: return BRUSH_DeleteObject( obj, (BRUSHOBJ*)header );
case FONT_MAGIC: return GDI_FreeObject( obj );
case PALETTE_MAGIC: return PALETTE_DeleteObject(obj,(PALETTEOBJ*)header);
case BITMAP_MAGIC: return BITMAP_DeleteObject( obj, (BITMAPOBJ*)header);
case REGION_MAGIC: return REGION_DeleteObject( obj, (RGNOBJ*)header );
}
return FALSE;
}
/***********************************************************************
* GetStockObject16 (GDI.87)
*/
HGDIOBJ16 GetStockObject16( INT16 obj )
{
return (HGDIOBJ16)GetStockObject32( obj );
}
/***********************************************************************
* GetStockObject32 (GDI32.220)
*/
HGDIOBJ32 GetStockObject32( INT32 obj )
{
if ((obj < 0) || (obj >= NB_STOCK_OBJECTS)) return 0;
if (!StockObjects[obj]) return 0;
dprintf_gdi(stddeb, "GetStockObject: returning %d\n",
FIRST_STOCK_HANDLE + obj );
return (HGDIOBJ16)(FIRST_STOCK_HANDLE + obj);
}
/***********************************************************************
* GetObject16 (GDI.82)
*/
INT16 GetObject16( HANDLE16 handle, INT16 count, LPVOID buffer )
{
GDIOBJHDR * ptr = NULL;
dprintf_gdi(stddeb, "GetObject16: %04x %d %p\n", handle, count, buffer );
if (!count) return 0;
if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
else
ptr = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (!ptr) return 0;
switch(ptr->wMagic)
{
case PEN_MAGIC:
return PEN_GetObject16( (PENOBJ *)ptr, count, buffer );
case BRUSH_MAGIC:
return BRUSH_GetObject16( (BRUSHOBJ *)ptr, count, buffer );
case BITMAP_MAGIC:
return BITMAP_GetObject16( (BITMAPOBJ *)ptr, count, buffer );
case FONT_MAGIC:
return FONT_GetObject16( (FONTOBJ *)ptr, count, buffer );
case PALETTE_MAGIC:
return PALETTE_GetObject( (PALETTEOBJ *)ptr, count, buffer );
}
return 0;
}
/***********************************************************************
* GetObject32A (GDI32.204)
*/
INT32 GetObject32A( HANDLE32 handle, INT32 count, LPVOID buffer )
{
GDIOBJHDR * ptr = NULL;
dprintf_gdi(stddeb, "GetObject32A: %08x %d %p\n", handle, count, buffer );
if (!count) return 0;
if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
else
ptr = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (!ptr) return 0;
switch(ptr->wMagic)
{
case PEN_MAGIC:
return PEN_GetObject32( (PENOBJ *)ptr, count, buffer );
case BRUSH_MAGIC:
return BRUSH_GetObject32( (BRUSHOBJ *)ptr, count, buffer );
case BITMAP_MAGIC:
return BITMAP_GetObject32( (BITMAPOBJ *)ptr, count, buffer );
case FONT_MAGIC:
return FONT_GetObject32A( (FONTOBJ *)ptr, count, buffer );
case PALETTE_MAGIC:
fprintf( stderr, "GetObject32: magic %04x not implemented\n",
ptr->wMagic );
break;
}
return 0;
}
/***********************************************************************
* GetObject32W (GDI32.206)
*/
INT32 GetObject32W( HANDLE32 handle, INT32 count, LPVOID buffer )
{
return GetObject32A( handle, count, buffer );
}
/***********************************************************************
* SelectObject16 (GDI.45)
*/
HGDIOBJ16 SelectObject16( HDC16 hdc, HGDIOBJ16 handle )
{
return (HGDIOBJ16)SelectObject32( hdc, handle );
}
/***********************************************************************
* SelectObject32 (GDI32.299)
*/
HGDIOBJ32 SelectObject32( HDC32 hdc, HGDIOBJ32 handle )
{
GDIOBJHDR * ptr = NULL;
DC * dc;
dprintf_gdi(stddeb, "SelectObject: hdc=%04x %04x\n", hdc, handle );
if ((handle >= FIRST_STOCK_HANDLE) && (handle <= LAST_STOCK_HANDLE))
ptr = StockObjects[handle - FIRST_STOCK_HANDLE];
else
ptr = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (!ptr) return 0;
dc = (DC *) GDI_GetObjPtr( hdc, DC_MAGIC );
if (!dc)
{
dc = (DC *)GDI_GetObjPtr(hdc, METAFILE_DC_MAGIC);
if (!dc) return 0;
}
switch(ptr->wMagic)
{
case PEN_MAGIC:
return PEN_SelectObject( dc, handle, (PENOBJ *)ptr );
case BRUSH_MAGIC:
return BRUSH_SelectObject( dc, handle, (BRUSHOBJ *)ptr );
case BITMAP_MAGIC:
return BITMAP_SelectObject( dc, handle, (BITMAPOBJ *)ptr );
case FONT_MAGIC:
return FONT_SelectObject( dc, handle, (FONTOBJ *)ptr );
case REGION_MAGIC:
return (HGDIOBJ16)SelectClipRgn16( hdc, handle );
}
return 0;
}
/***********************************************************************
* UnrealizeObject16 (GDI.150)
*/
BOOL16 UnrealizeObject16( HGDIOBJ16 obj )
{
return UnrealizeObject32( obj );
}
/***********************************************************************
* UnrealizeObject (GDI32.358)
*/
BOOL32 UnrealizeObject32( HGDIOBJ32 obj )
{
/* Check if object is valid */
GDIOBJHDR * header = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( obj );
if (!header) return FALSE;
dprintf_gdi( stddeb, "UnrealizeObject: %04x\n", obj );
/* Unrealize object */
switch(header->wMagic)
{
case PALETTE_MAGIC:
return PALETTE_UnrealizeObject( obj, (PALETTEOBJ *)header );
case BRUSH_MAGIC:
/* Windows resets the brush origin. We don't need to. */
break;
}
return TRUE;
}
/***********************************************************************
* EnumObjects16 (GDI.71)
*/
INT16 EnumObjects16( HDC16 hdc, INT16 nObjType, GOBJENUMPROC16 lpEnumFunc,
LPARAM lParam )
{
/* Solid colors to enumerate */
static const COLORREF solid_colors[] =
{ RGB(0x00,0x00,0x00), RGB(0xff,0xff,0xff),
RGB(0xff,0x00,0x00), RGB(0x00,0xff,0x00),
RGB(0x00,0x00,0xff), RGB(0xff,0xff,0x00),
RGB(0xff,0x00,0xff), RGB(0x00,0xff,0xff),
RGB(0x80,0x00,0x00), RGB(0x00,0x80,0x00),
RGB(0x80,0x80,0x00), RGB(0x00,0x00,0x80),
RGB(0x80,0x00,0x80), RGB(0x00,0x80,0x80),
RGB(0x80,0x80,0x80), RGB(0xc0,0xc0,0xc0)
};
INT16 i, retval = 0;
LOGPEN16 *pen;
LOGBRUSH16 *brush = NULL;
dprintf_gdi( stddeb, "EnumObjects16: %04x %d %08lx %08lx\n",
hdc, nObjType, (DWORD)lpEnumFunc, lParam );
switch(nObjType)
{
case OBJ_PEN:
/* Enumerate solid pens */
if (!(pen = SEGPTR_NEW(LOGPEN16))) break;
for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
{
pen->lopnStyle = PS_SOLID;
pen->lopnWidth.x = 1;
pen->lopnWidth.y = 0;
pen->lopnColor = solid_colors[i];
retval = lpEnumFunc( SEGPTR_GET(pen), lParam );
dprintf_gdi( stddeb, "EnumObjects16: solid pen %08lx, ret=%d\n",
solid_colors[i], retval);
if (!retval) break;
}
SEGPTR_FREE(pen);
break;
case OBJ_BRUSH:
/* Enumerate solid brushes */
if (!(brush = SEGPTR_NEW(LOGBRUSH16))) break;
for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
{
brush->lbStyle = BS_SOLID;
brush->lbColor = solid_colors[i];
brush->lbHatch = 0;
retval = lpEnumFunc( SEGPTR_GET(brush), lParam );
dprintf_gdi( stddeb, "EnumObjects16: solid brush %08lx, ret=%d\n",
solid_colors[i], retval);
if (!retval) break;
}
/* Now enumerate hatched brushes */
if (retval) for (i = HS_HORIZONTAL; i <= HS_DIAGCROSS; i++)
{
brush->lbStyle = BS_HATCHED;
brush->lbColor = RGB(0,0,0);
brush->lbHatch = i;
retval = lpEnumFunc( SEGPTR_GET(brush), lParam );
dprintf_gdi( stddeb, "EnumObjects16: hatched brush %d, ret=%d\n",
i, retval);
if (!retval) break;
}
SEGPTR_FREE(brush);
break;
default:
fprintf( stderr, "EnumObjects16: invalid type %d\n", nObjType );
break;
}
return retval;
}
/***********************************************************************
* EnumObjects32 (GDI32.89)
*/
INT32 EnumObjects32( HDC32 hdc, INT32 nObjType, GOBJENUMPROC32 lpEnumFunc,
LPARAM lParam )
{
/* Solid colors to enumerate */
static const COLORREF solid_colors[] =
{ RGB(0x00,0x00,0x00), RGB(0xff,0xff,0xff),
RGB(0xff,0x00,0x00), RGB(0x00,0xff,0x00),
RGB(0x00,0x00,0xff), RGB(0xff,0xff,0x00),
RGB(0xff,0x00,0xff), RGB(0x00,0xff,0xff),
RGB(0x80,0x00,0x00), RGB(0x00,0x80,0x00),
RGB(0x80,0x80,0x00), RGB(0x00,0x00,0x80),
RGB(0x80,0x00,0x80), RGB(0x00,0x80,0x80),
RGB(0x80,0x80,0x80), RGB(0xc0,0xc0,0xc0)
};
INT32 i, retval = 0;
LOGPEN32 pen;
LOGBRUSH32 brush;
dprintf_gdi( stddeb, "EnumObjects32: %04x %d %08lx %08lx\n",
hdc, nObjType, (DWORD)lpEnumFunc, lParam );
switch(nObjType)
{
case OBJ_PEN:
/* Enumerate solid pens */
for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
{
pen.lopnStyle = PS_SOLID;
pen.lopnWidth.x = 1;
pen.lopnWidth.y = 0;
pen.lopnColor = solid_colors[i];
retval = lpEnumFunc( &pen, lParam );
dprintf_gdi( stddeb, "EnumObjects32: solid pen %08lx, ret=%d\n",
solid_colors[i], retval);
if (!retval) break;
}
break;
case OBJ_BRUSH:
/* Enumerate solid brushes */
for (i = 0; i < sizeof(solid_colors)/sizeof(solid_colors[0]); i++)
{
brush.lbStyle = BS_SOLID;
brush.lbColor = solid_colors[i];
brush.lbHatch = 0;
retval = lpEnumFunc( &brush, lParam );
dprintf_gdi( stddeb, "EnumObjects32: solid brush %08lx, ret=%d\n",
solid_colors[i], retval);
if (!retval) break;
}
/* Now enumerate hatched brushes */
if (retval) for (i = HS_HORIZONTAL; i <= HS_DIAGCROSS; i++)
{
brush.lbStyle = BS_HATCHED;
brush.lbColor = RGB(0,0,0);
brush.lbHatch = i;
retval = lpEnumFunc( &brush, lParam );
dprintf_gdi( stddeb, "EnumObjects32: hatched brush %d, ret=%d\n",
i, retval);
if (!retval) break;
}
break;
default:
/* FIXME: implement Win32 types */
fprintf( stderr, "EnumObjects32: invalid type %d\n", nObjType );
break;
}
return retval;
}
/***********************************************************************
* IsGDIObject (GDI.462)
*/
BOOL16 IsGDIObject( HGDIOBJ16 handle )
{
GDIOBJHDR *object = (GDIOBJHDR *) GDI_HEAP_LIN_ADDR( handle );
if (object)
return (object->wMagic>=PEN_MAGIC && object->wMagic<= METAFILE_DC_MAGIC);
return FALSE;
}
/***********************************************************************
* MulDiv16 (GDI.128)
*/
INT16 MulDiv16( INT16 foo, INT16 bar, INT16 baz )
{
INT32 ret;
if (!baz) return -32768;
ret = (foo * bar) / baz;
if ((ret > 32767) || (ret < -32767)) return -32768;
return ret;
}
/***********************************************************************
* MulDiv32 (KERNEL32.391)
*/
INT32 MulDiv32( INT32 foo, INT32 bar, INT32 baz )
{
#ifdef __GNUC__
long long ret;
if (!baz) return -1;
ret = ((long long)foo * bar) / baz;
if ((ret > 2147483647) || (ret < -2147483647)) return -1;
return ret;
#else
if (!baz) return -1;
return (foo * bar) / baz;
#endif
}
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