ImageGear for C and C++ on Windows v19.0
IG_PDF_stream_read
| API Reference Guide > PDF Component API Reference > PDF Component Objects Reference > General Objects > HIG_PDF_STREAM > IG_PDF_stream_read |
Creates a read-only PDF stream from an arbitrary data-producing procedure.
|
Copy Code
|
|
|---|---|
AT_ERRCOUNT ACCUAPI IG_PDF_stream_read(
HIG_PDF_STREAM hStream,
LPSTR lpBuffer,
LONG nItems,
SHORT nItemSize,
LPLONG lpnItemsRead
);
|
|
| Name | Type | Description |
|---|---|---|
| hStream | HIG_PDF_STREAM | The stream from which data is read. |
| lpBuffer | LPSTR | Buffer into which data is written. |
| nItems | LONG | Number of items to read. The amount of data read into the memory buffer will be nItems ? nItemSize, unless an EOF is encountered first. The relative values of nItems and nItemSize really do not matter; the only thing that matters is their product. It is often convenient to set nItemSize to 1, so that nItems is the number of bytes to read. |
| nItemSize | SHORT | Number of bytes in an item in the stream. |
| lpnItemsRead | LPLONG | The number of items (not bytes) read. |
Error count.
This function does not process image pixels.
The stream is not seek-able. lpfnReadProc is called when the client of the stream attempts to read data from it.