Input Parameters | Significance |
DtvLong idm | mask Id |
DtvLong idf | field Id |
Output Parameters | Significance |
no | - |
Return Code | Significance |
0 | field exists in mask |
1 | field does not exist in mask |
Use this function to check the existence of a field whenever you want to apply complex program functions to the field but are not sure whether the object still exists in local memory.
Attention!
Applying a program function to a non-existent object can result in a system crash.