str-var = Get_Trk_TrkID(LPtr)

Operands:

LPtr

The operand is a normal line-pointer (NOT a Line Number)

Returns:

The answer returned is the Track-ID for the requested LPtr.


Before using this macro, be sure you have reviewed the full description in "Tracking Screen Positions" 


The Return-code should be checked before using the return value, since an invalid line-pointer will simply return a zero.