IG_mpi_page_is

This function returns information about the page with a given index.

Declaration:

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AT_BOOL ACCUAPI IG_mpi_page_is_valid( [IN] HMIGEAR hMIGear, [IN] UINT nPage, );

Arguments:

Name	Type	Description
hMIGear	HMIGEAR	The handle to the allocated multi-page image.
nPage	UINT	The index of the page to check.

Return Value:

Returns TRUE if the given page is valid.

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; / will hold returned error count / UINT nPageCount = IGE_SUCCESS; / number of pages that should get from multi-page image / UINT i; HIGEAR hIGear; / handle of an image / ... / initialize of multi-page image and assign it with external file */ nErrCount = IG_mpi_page_count_get( hMIGear, &nPageCount ); for ( i = 0; i < nPageCount; i++ ) if ( !IG_mpi_page_is_valid(hMIGear, i) && (!nErrCount) ) nErrCount = IG_mpi_page_unload( hMIGear, i, 1 );

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HMIGEAR   hMIGear;      /* handle to multi-page image */
AT_ERRCOUNT             nErrCount;   /* will hold returned error count */
UINT nPageCount = IGE_SUCCESS; /* number of pages that should get from multi-page image */
UINT i;
HIGEAR hIGear;     /* handle of an image */
 ...
/* initialize of multi-page image and assign it with external file */
nErrCount = IG_mpi_page_count_get( hMIGear, &nPageCount );
for ( i = 0; i < nPageCount; i++ )
        if ( !IG_mpi_page_is_valid(hMIGear, i) && (!nErrCount) )
        nErrCount = IG_mpi_page_unload( hMIGear, i, 1 );

Remarks:

If the page with such an index exists as well as a valid HIGEAR handle, then it returns TRUE. In all other cases FALSE is returned.