astGetActiveUnitastGetActiveUnit - Determines how the Unit attribute will be used

Description:
This function returns the current value of the ActiveUnit flag for a FrameFrame. See the description of the astSetActiveUnitastSetActiveUnit function for a description of the ActiveUnit flag.
Synopsis:
int astGetActiveUnit( AstFrame $*$this )
Parameters:
this
Pointer to the Frame.
Returned Value:
astGetActiveUnit
The current value of the ActiveUnit flag.
Notes:
  • A zero value will be returned if this function is invoked with the AST error status set, or if it should fail for any reason.