/*
 * Copyright 2000 Corel Corporation
 * Copyright 2006 Marcus Meissner
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#ifndef _TWAIN32_H
#define _TWAIN32_H

#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "twain.h"
#include "wine/list.h"

struct pending_message
{
    struct list entry;
    TW_UINT16 msg;
};

/* internal information about an active data source */
typedef struct tagActiveDS
{
    struct tagActiveDS	*next;			/* next active DS */
    TW_IDENTITY		identity;		/* identity */
    HMODULE		hmod;
    DSENTRYPROC		dsEntry;
    struct list         pending_messages;
    HWND                ui_window;
    HWND                event_window;
} activeDS;

extern TW_UINT16 DSM_twCC;             /* current condition code of Source Manager */

extern activeDS *activeSources;	/* list of active data sources */

extern HINSTANCE DSM_hinstance;

/* Implementation of operation triplets (From Application to Source Manager) */
extern TW_UINT16 TWAIN_CloseDS(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_IdentityGetDefault(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_IdentityGetFirst(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_IdentityGetNext(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_OpenDS(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_UserSelect(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_CloseDSM(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_OpenDSM(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_GetDSMStatus(pTW_IDENTITY pOrigin, TW_MEMREF pData);
extern TW_UINT16 TWAIN_ControlNull(pTW_IDENTITY pOrigin, pTW_IDENTITY pDest, activeDS *pSource, TW_UINT16 MSG, TW_MEMREF pData);
extern TW_UINT16 TWAIN_ProcessEvent(pTW_IDENTITY pOrigin, activeDS *pSource, TW_MEMREF pData);

#endif