#pragma warning(disable : 4996)

#include <windows.h>
#include <stdlib.h>

#include "ttwain_state.h"
#include "ttwainP.h"
#include "ttwain_statePD.h"
#include "ttwain_util.h"

#ifdef __cplusplus
extern "C" {
#endif

static void *hDSMLib; /* handle of DSM */
extern void TTWAIN_SetState(TWAINSTATE status);

int TTWAIN_LoadSourceManagerPD(void)
{
	char winDir[_MAX_PATH];

	if (TTWAIN_GetState() >= TWAIN_SM_LOADED)
		return TRUE; /* DSM already loaded */

	GetWindowsDirectory(winDir, _MAX_PATH);
	if (!winDir[0])
		return FALSE;

	strcat(winDir, "\\");
	strcat(winDir, DSM_FILENAME);

	hDSMLib = LoadLibrary(winDir);

	/*
if (tnz_access(winDir, 0x00) != -1)
  hDSMLib = LoadLibrary(winDir);
else
  {
  hDSMLib = 0;
  return FALSE;
  }
*/

	if (hDSMLib) {
		TTwainData.DSM_Entry = (DSMENTRYPROC)GetProcAddress(hDSMLib, DSM_ENTRYPOINT);
		if (TTwainData.DSM_Entry) {
			TTWAIN_SetAvailable(AVAIABLE_YES);
			TTWAIN_SetState(TWAIN_SM_LOADED);
		} else {
			FreeLibrary(hDSMLib);
			hDSMLib = NULL;
		}
	} else
		TTwainData.DSM_Entry = 0;
	return (TTWAIN_GetState() >= TWAIN_SM_LOADED);
}
/*---------------------------------------------------------------------------*/
int TTWAIN_UnloadSourceManagerPD(void)
{

	if (TTWAIN_GetState() == TWAIN_SM_LOADED) {
		if (hDSMLib) {
			FreeLibrary(hDSMLib);
			hDSMLib = NULL;
		}
		TTwainData.DSM_Entry = NULL;
		TTWAIN_SetState(TWAIN_PRESESSION);
	}
	return (TTWAIN_GetState() == TWAIN_PRESESSION);
}
/*---------------------------------------------------------------------------*/

#ifdef __cplusplus
}
#endif