IG_mpf_page

If a multi-page image is associated with the external file, it loads a page of the specified index from an external file and returns it using the parameter lphIGear.

Declaration:

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AT_ERRCOUNT IG_mpf_page_get( [IN] HMIGEAR hMIGear, [IN] UINT nPage, [OUT] LPHIGEAR lphIGear );

Arguments:

Name	Type	Description
hMIGear	HMIGEAR	Handle to the allocated multi-page image.
nPage	UINT	The index page to load.
lphIGear	LPHIGEAR	Indicates where to return the image handle.

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++.

Example:

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AT_ERRCOUNT nErrCount; // Returned count of errors HMIGEAR hMPDoc; // Handle of multipage image HIGEAR hIGear; // Handle of the page image nErrCount = IG_mpi_create(&hMPDoc, 0); if(nErrCount == 0) { nErrCount = IG_mpi_file_open("multipage.tif", hMPDoc, 0, IG_MP_OPENMODE_READONLY); if(nErrCount == 0) { nErrCount = IG_mpf_page_get(hMPDoc, 0, &hIGear); if(nErrCount == 0) { //... // Destroy the image IG_image_delete(hIGear); } } // Destroy multipage document IG_mpi_delete(hMPDoc); }

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    AT_ERRCOUNT nErrCount; // Returned count of errors
    HMIGEAR hMPDoc;        // Handle of multipage image
    HIGEAR hIGear;         // Handle of the page image
    nErrCount = IG_mpi_create(&hMPDoc, 0);
    if(nErrCount == 0)
    {
        nErrCount = IG_mpi_file_open("multipage.tif", hMPDoc, 0, IG_MP_OPENMODE_READONLY);
        if(nErrCount == 0)
        {
            nErrCount = IG_mpf_page_get(hMPDoc, 0, &hIGear);
            if(nErrCount == 0)
            {
                //...
                // Destroy the image
                IG_image_delete(hIGear);
            }
        }
        // Destroy multipage document
        IG_mpi_delete(hMPDoc);
    }

Remarks:

If a multi-page image is not associated with the external file, or a failure to load a page occurs, then an error is set. This function does not change the multi-page image.