This function will be called during file operations when a READ is required.
Declaration:
 Copy Code |
|
|---|---|
typedef LONG (ACCUAPI LPFNIG_READ) (
LONG fd,
LPBYTE lpBuffer,
LONG lSize
);
|
|
Arguments:
| fd | File Descriptor handle. |
| lpBuffer | Far pointer to buffer into which to read data. |
| lSize | Number of bytes to read. |
Return Value:
Return the number of bytes read, or -1 to indicate that an error occurred.
Supported Raster Image Formats:
This function does not process image pixels.
Sample:
IOSET
Example:
See the example for function IG_file_IO_register().
Remarks:
This type of function is established by calling IG_file_IO_register() function.