ImageGear for C and C++ on Linux v20.0 - Updated
API Reference Guide > Core Component API Reference > Core Component Functions Reference > Multi Page Image File Functions > IG_mpf_page_delete

This function deletes the nCount number of pages starting with the nStartPage.


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AT_ERRCOUNT IG_mpf_page_delete( 
        [IN] HMIGEAR hMIGear, 
        [IN] UINT nStartPage, 
        [IN] UINT nCount


Name Type Description
hMIGear HMIGEAR Handle to the allocated multi-page image.
nStartPage UINT The first page to be deleted.
nCount UINT Number of pages to delete.

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++.


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


This function then shifts pages with higher numbers to fill the space in the external file associated with the multi-page image using function IG_mpi_file_open(). The multi-page image itself is not changed. Either the multi-page image, or in the external file pages are numbered starting with 0.

Not all format filters are supported by this operation. Use the IG_fltr_info_get() function to obtain all information about the supported features for a particular format filter.

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