LFileSettings::GetIgnoreFilters

#include "ltwrappr.h"

static L_SSIZE_T LFileSettings::GetIgnoreFilters(pszFilters, uSize)

L_TCHAR * pszFilters;	/* character string to be updated with filters */
L_SIZE_T uSize;	/* size in bytes of pszFilters */

Retrieves the current ignored filters list that LEADTOOLS should NEVER load, even if present.

Parameter	Description
pszFilters	Pointer to a character string to be updated with the current ignored filters list.
uSize	The size in bytes of the buffer pointed to by pszFilters.

Returns

>=0	The size in bytes of the ignored filters list.
< 0	An error occurred. Refer to Return Codes.

Comments

In case the current ignored filters list should be changed, call this function before calling the LFileSettings::IgnoreFilters function.

To retrieve the ignored filters list, the user should do the following:

1.	Call the LFileSettings::GetIgnoreFilters function passing pszFilters as NULL and uSize as 0 to retrieve the size required for the filters list as returned value.
2.	Allocate a buffer of size (Returned Value * sizeof(L_TCHAR)).
3.	Call the LFileSettings::GetIgnoreFilters function passing the allocated buffer to the pszFilters and the returned value to uSize to retrieve the filters list.

Required DLLs and Libraries

LTFIL

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application.

See Also

Functions:	LFileSettings::IgnoreFilters, LFileSettings::PreLoadFilters, LFileSettings::GetPreLoadFilters, Class Members.
Topics:	Raster Image Functions: Input/Output File Filters
	Loading File Filters

Example

L_INT LFileSettings__GetIgnoreFiltersExample()
{
   L_TCHAR * pszList = NULL;
   L_SIZE_T nRet;
   LFileSettings FileSettings;
   LBitmap Bitmap;
   /* get the original filters list */
   nRet = LFileSettings::GetIgnoreFilters(NULL, 0);
   pszList = (L_TCHAR *)malloc(nRet*sizeof(L_TCHAR));
   nRet = LFileSettings::GetIgnoreFilters(pszList, nRet);
   ::MessageBox(NULL, pszList, TEXT("TEST"), MB_OK);
   free(pszList);
   /* ignore TGA filter */
   LFileSettings::IgnoreFilters(TEXT("TGA"));
   /* get the new filters list */
   nRet = LFileSettings::GetIgnoreFilters(NULL, 0);
   pszList = (L_TCHAR *)malloc(nRet*sizeof(L_TCHAR));
   nRet = LFileSettings::GetIgnoreFilters(pszList, nRet);
   ::MessageBox(NULL, pszList, TEXT("TEST"), MB_OK);
   free(pszList);
   /* try to load TGA, should fail: ERROR_FILE_FORMAT */
   nRet = Bitmap.Load(TEXT("d:\\temp\\test.tga"));
   if(nRet == ERROR_FILE_FORMAT)
      ::MessageBox(NULL, TEXT("TGA ignored"), TEXT("TEST"), MB_OK);
   return SUCCESS;
}