Gets the configuration values of a topology.
(tpm_infobuildvar tpm_id var_id)
Returns T or nil.
| tpm_id | Topology ID (real) |
| var_id | Topology variables ID (real) |
The topology variables ID references a set of topology variables in which to store the values that this function gets.
If no topology variables are allocated, call tpm_varalloc to allocate a set of them and return their ID.
To read the values that this function gets, use tpm_varget or tpm_varlist. To build a new topology using these variables, use tpm_mntbuild.
The following code opens a topology, reads its configuration values, and gets its node layer.
(setq tpm_id (tpm_acopen "SampleTopo")) (setq var_id (tpm_varalloc)) (tpm_infobuildvar tpm_id var_id) (tpm_acclose tpm_id) (setq nlayer (tpm_varget var_id "NODE_LAYER"))