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astGetActiveUnit - Determines how the Unit attribute will be used

Description:
This function returns the current value of the ActiveUnit flag for a Frame. See the description of the astSetActiveUnit 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.



next up previous
Next: astGetFrame - Obtain a pointer to a specified Frame in a FrameSet
Up: AST Function Descriptions
Previous: astGet<X> - Get an attribute value for an Object

AST A Library for Handling World Coordinate Systems in Astronomy
Starlink User Note 211
R.F. Warren-Smith & D.S. Berry
30th April 2003
E-mail:ussc@star.rl.ac.uk

Copyright (C) 2003 Central Laboratory of the Research Councils