If multi-page image hMIGear is associated with an external file, then this function returns information about the page with an nPage index from the external file.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_mpf_page_info_get_ex(
HMIGEAR hMIGear,
UINT nPage,
LPAT_MODE lpCompression,
HIGDIBINFO* lpDIB
);
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Arguments:
| Name | Type | Description |
| hMIGear | HMIGEAR | Handle to allocated multi-page image. |
| nPage | UINT | Index of the page, starting with 0. |
| lpCompression | AT_MODE | Pointer indicating where to receive the compression method of the given image. It is used for constants such as IG_COMPRESSION_NONE, or IG_COMPRESSION_JPEG. A complete list of compression methods can be found in the accucnst.h file. |
| lpDIB | HIGDIBINFO* | Pointer indicating where to return a DIB info handle associated with the page. |
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 Professional.
Sample:
None
Example:
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HMIGEAR hMIGear; /* handle to multi-page image */ AT_ERRCOUNT nErrCount; /* will hold returned error count */ UINT nPageCount = 0; UINT i; AT_MODE nCompression; HIGDIBINFO hDIB; char str[80]; ... /* initialize multi-page image, assign it with external file */ nErrCount = IG_mpf_page_count_get( hMIGear, &nPageCount ); for( i = 0; i < nPageCount; i++) if (!nErrCnt) { nErrCnt = IG_mpf_page_info_get_ex( hMIGear, i, &nCompression, &hDIB ); if (!nErrCnt) { IG_guidlg_compression_name_get( nCompression, str, sizeof(str) ); printf( "Page %i\n Compression method: %s\n", i, str ); } } |
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Remarks:
Pages are numbered starting with 0. If the image is not associated with an external file, then this function returns an error.