This function is called for each GeoKey enumerated by the LFile::EnumGeoKeys function.
virtual L_INT LFile::EnumGeoKeysCallBack(uTag, uType, uCount, pData)
GeoKey ID identifying the GeoTIFF key.
The type of GeoKey. This indicates whether the data pointed to by pData is SHORT, DOUBLE or ASCII. Possible values are:
|TAG_ASCII|| Byte in the range of 0 to 255. Null-terminated.|
|TAG_SHORT|| Two bytes, unsigned.|
|TAG_DOUBLE|| Eight bytes used as a double-precision floating-point number.|
|TAG_IFD|| 32-bit IFD offset.|
|TAG_LONG8|| Unsigned 64-bit integer (valid only for BigTIFF formats).|
|TAG_SLONG8|| Signed 64-bit integer (valid only for BigTIFF formats).|
|TAG_IFD8|| 64-bit IFD offset (valid only for BigTIFF formats).|
The number of items in the pData buffer. Note that this does not 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.
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.
|SUCCESS||The function was successful.|
|< 1||An error occurred. Refer to Return Codes.|
This function will be called for every GeoKey on the page.
For an example, refer to LFile::EnumGeoKeys function.
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