GetAlternateImageInfo
Image handling, document inspection
Description
Reads the image reference, printing preference and optional-content reference from one alternate-image dictionary
Syntax
Function TPDFlib.GetAlternateImageInfo(BaseImageID, Index: Integer; Out Info: TPDFlibAlternateImageInfo): Integer;Parameters
| BaseImageID | The base image containing the /Alternates array |
|---|---|
| Index | The one-based alternate index |
| Info | Receives the typed alternate-image fields |
Return value
Returns 1 on success or 0 for an invalid handle, index, dictionary or image reference
Remarks
FindImages registers page-resource images and their reachable alternates so imported image references receive usable ImageID values
Object and generation numbers remain available for diagnostics even when a caller obtains the record from unusual imported object structures