IPB_Session interface:
IsGlobalVarNull method
Description
Returns true if the global variable contains a null value; otherwise it returns false.
Syntax
IsGlobalVarNull( pbfield fid)Argument |
Description |
|---|---|
fid |
The field ID of the global variable |
Return Values
pbboolean.
Examples
These statements test whether the field identified by fid is a global variable array:
fid = session -> GetGlobalVarID("arr_gvar");
if (session -> IsGlobalVarArray(fid))
{
arr_val=session -> GetArrayGlobalVar(fid, isNull);
...