LFile::EnumGeoKeysCallBack

#include "ltwrappr.h"

virtual L_INT LFile::EnumGeoKeysCallBack(uTag, uType, uCount, pData)

This function is called for each GeoKey enumerated by the LFile::EnumGeoKeys function.

Parameter	Description
uTag	GeoKey ID identifying the GeoTIFF key.
uType	The type of GeoKey. This indicates whether the data pointed to by pData is SHORT, DOUBLE or ASCII. Possible values are:
	Value	Meaning
	TAG_ASCII	[2] Byte in the range of 0 to 255. Null-terminated.
	TAG_SHORT	[3] Two bytes, unsigned.
	TAG_DOUBLE	[12] Eight bytes used as a double-precision floating-point number.
	TAG_IFD	[13] 32-bit IFD offset.
	TAG_LONG8	[16] Unsigned 64-bit integer (valid only for BigTIFF formats).
	TAG_SLONG8	[17] Signed 64-bit integer (valid only for BigTIFF formats).
	TAG_IFD8	[18] 64-bit IFD offset (valid only for BigTIFF formats).
uCount	The number of items in the pData buffer. Note that this doesn't describe the number of bytes. For example, if uCount is 10 and uType is TAG_DOUBLE, you will need 10 x 8 = 80 bytes to read the tag data.
pData	A void pointer that you can use to access a variable or structure containing the GeoKey data. This gives you a way to receive data indirectly from the function that uses this callback function.