oshdr.h

BIOS emulator and interface to Realmode X86 Emulator Library Can emulate a PCI Graphic Controller V

/****************************************************************************
*
*					SciTech OS Portability Manager Library
*
*  ========================================================================
*
*    The contents of this file are subject to the SciTech MGL Public
*    License Version 1.0 (the "License"); you may not use this file
*    except in compliance with the License. You may obtain a copy of
*    the License at http://www.scitechsoft.com/mgl-license.txt
*
*    Software distributed under the License is distributed on an
*    "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
*    implied. See the License for the specific language governing
*    rights and limitations under the License.
*
*    The Original Code is Copyright (C) 1991-1998 SciTech Software, Inc.
*
*    The Initial Developer of the Original Code is SciTech Software, Inc.
*    All Rights Reserved.
*
*  ========================================================================
*
* Language:		ANSI C
* Environment:	Win32
*
* Description:	Include file to include all OS specific header files.
*
****************************************************************************/

#define	WIN32_LEAN_AND_MEAN
#define	STRICT
#include <windows.h>
#include <mmsystem.h>
#include <float.h>
#define NONAMELESSUNION
#include "mgl\ddraw.h"

/* Macros to save and restore the default control word. Windows 9x has
 * some bugs in it such that calls to load any DLL's which load 16-bit
 * DLL's cause the floating point control word to get trashed. We fix
 * this by saving and restoring the control word across problematic
 * calls.
 */

#if	defined(__INTEL__)
#define	GET_DEFAULT_CW()					\
{                                           \
	if (_PM_cw_default == 0)               	\
		_PM_cw_default = _control87(0,0);  	\
}
#define	RESET_DEFAULT_CW()					\
	_control87(_PM_cw_default,0xFFFFFFFF)
#else
#define	GET_DEFAULT_CW()
#define	RESET_DEFAULT_CW()
#endif

/* Macro for disabling AutoPlay on a use system */

#define	AUTOPLAY_DRIVE_CDROM	0x20

/*--------------------------- Global Variables ----------------------------*/

#ifdef	__INTEL__
extern uint		_PM_cw_default;			/* Default FPU control word		*/
#endif
extern int		_PM_deskX,_PM_deskY;	/* Desktop dimentions			*/
extern HWND		_PM_hwndConsole;		/* Window handle for console	*/
extern HWND		_PM_hwndUser;			/* User window handle			*/
extern ibool	_PM_haveWinNT;			/* True if we are running on NT	*/
extern HINSTANCE		_PM_hInstDD;	/* Handle to DirectDraw DLL 	*/
extern LPDIRECTDRAW		_PM_lpDD1;		/* DirectDraw object			*/
extern LPDIRECTDRAW2	_PM_lpDD;		/* DirectDraw2 object			*/

/*-------------------------- Internal Functions ---------------------------*/

void _EVT_pumpMessages(void);
ibool _PM_loadDirectDraw(void);
void _PM_unloadDirectDraw(void);