Determines if an object has been released
(vlax-object-released-p obj)
T, if the object is released (no AutoCAD drawing object is attached to obj); nil if the object has not been released.
Attach a Microsoft Excel application to the current AutoCAD drawing:
_$ (setq excelobj (vlax-get-object "Excel.Application"))
#<VLA-OBJECT _Application 00168a54>
_$ (vlax-release-object excelobj)
1
Issue vlax-object-released-p to verify the object was released:
_$ (vlax-object-released-p excelobj)
T