"Command" IsAvailable

Is there a function in VLisp to check if certain commands/functions are
available or not.

Here is a problem:

I have set of procedures that apply in case of error, so error function has
a call to a function that has all these procedures. Among procedures one
uses COMMAN function. Now, when user closes a drawing and responses not to
save it, AutoCAD cancels something, I see that in the command line (Command:
*Cancel*), and then I have no idea why, error function is triggered. At that
point, maybe, COMMAN is not available or locked (because AutoCAD is going to
close a drawing), and error occurs inside the error function. Unfortunately
VLR-DWG-Reactor happened after all and it does not help at all. I would like
to have a function to check availability of COMMAN function (in my case).

Thanks,

 

In general, commands are not available in reactors. Use
vlisp activeX functions to accomplish what you want.
Somethings are not possible anyway when closing a drawing.

Watch your spelling BTW. If you are typing in (comman .....) you will get
an error anyway. The function is "command".