This function is called for each GeoKey enumerated by the L_EnumFileGeoKeys function.
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.|
For TAG_ASCII, uCount represents the number of bytes in
For TAG_SHORT and TAG_DOUBLE, uCount represents the number of items in the
Note that for TAG_SHORT and TAG_DOUBLE, uCount does not represent the number of bytes. Instead, it represents the number of items. 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.
A void pointer that you can use to access a variable or structure containing data that your callback function needs. This gives you a way to receive data indirectly from the function that uses this callback function. (This is the same pointer that you pass in the pUserData parameter of the L_EnumFileGeoKeys function.)
Keep in mind that this is a void pointer, which must be cast to the appropriate data type within your 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 L_EnumFileGeoKeys.
Medical Web Viewer .NET
.NET, Java, Android, and iOS/macOS Assemblies
C API/C++ Class Libraries