IG_mpi_info

This function returns status information for the multi-page image, such as the association type, open mode, as well as others.

Declaration:

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AT_ERRCOUNT ACCUAPI IG_mpi_info_get( [IN] HMIGEAR hMIGear, [IN] AT_MODE nMode, [IN/OUT] LPVOID lpData, [IN] DWORD dwSize );

Arguments:

Name	Type	Description
hMIGear	HMIGEAR	The handle to the allocated multi-page image.
nMode	AT_MODE	This argument is used to determine the type of information being retrieved.
lpData	LPVOID	The far pointer to the buffer indicating where to return the allocated data.
dwSize	DWORD	The size of the buffer.

Return Value:

Returns the number of ImageGear errors that occurred during this function call. If there are no errors, the return value is IGE_SUCCESS.

Supported Raster Image Formats:

All pixel formats supported by ImageGear for C and C++.

Sample:

MFC Multipage

Example:

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HMIGEAR hMIGear; /* handle to multi-page image / AT_ERRCOUNT nErrCount = IGE_SUCCESS; / will hold returned error count / HIGEAR hIGear; / handle of an image / AT_MODE nAType; CHAR FileName[_MAX_PATH]; ... / initialize of multi-page image and assign it with external file */ nErrCount = IG_mpi_info_get( hMIGear, IG_MP_ASSOCIATION_TYPE , &nAType, sizeof(nAType) ); if( nAType== IG_MP_ASSOCIATE_FILE ) { IG_mpi_info_get( hMIGear, IG_MP_FILE_NAME, FileName, sizeof(FileName) ); }

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HMIGEAR  hMIGear;     /* handle to multi-page image */
AT_ERRCOUNT      nErrCount = IGE_SUCCESS;  /* will hold returned error count */
HIGEAR hIGear;     /* handle of an image */
AT_MODE nAType;
CHAR FileName[_MAX_PATH];
 ...
/* initialize of multi-page image and assign it with external file */
nErrCount = IG_mpi_info_get( hMIGear, IG_MP_ASSOCIATION_TYPE , &nAType, sizeof(nAType) );
if( nAType== IG_MP_ASSOCIATE_FILE )
{
        IG_mpi_info_get( hMIGear, IG_MP_FILE_NAME, FileName, sizeof(FileName) );
}

Remarks:

The value of the parameters depends on nMode. The following table lists the possible combinations:

AT_MODE Constants	Type of Third Argument	dwSize	Description
IG_MP_ASSOCIATION_TYPE	LPAT_MODE	Sizeof (AT_MODE)	Returns the association type of the given multi-page image, which can be: IG_MP_ASSOCIATE_NONE IG_MP_ASSOCIATE_FILE IG_MP_ASSOCIATE_MEMORY [not currently implemented]
IG_MP_OPENMODE	LPAT_MODE	Sizeof(AT_MODE)	Returns the open mode of the associated file, which can be: IG_MP_OPENMODE_NONE IG_MP_OPENMODE_READONLY IG_MP_OPENMODE_READWRITE
IG_MP_FILE_NAME	LPCHAR	Length of the buffer including last 0 byte	Returns the name of the associated file.
[*]IG_MP_MEM_BUFFER_PTR	LPBYTE	4	Returns a pointer to the memory associated with the multi-page image.
[*]IG_MP_MEM_BUFFER_SIZE	LPDWORD	4	Returns the size of the associated memory.
IG_MP_FORMAT			File format of the multi-page document. One of the enumIGFormats values.
IG_MP_DOCUMENT			Native document associated with the multi-page document.