API Reference > OdDg Classes > OdDgDatabaseReactor Class > OdDgDatabaseReactor Methods > OdDgDatabaseReactor::headerSysVarWillChange Method
OdDgDatabaseReactor::headerSysVarWillChange Method
Syntax
C++
virtual void headerSysVarWillChange(const OdDgDatabase* pDb, const OdString& name);
Parameters 
Description 
const OdDgDatabase* pDb 
[in] Pointer to the database being modified.  
const OdString& name 
[in] Name of the system variable being modified. 

Notification function called whenever a database -resident system variable is about to change. 

 

This function is called before the operation.

headerSysVarChanged

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