How to make this code as autoCAd command?

I designed AutoLISP code to calculate the length of sheet rolled on known roll... How to make this code as autoCAd command

Hameed, please check the DEFUN function.

(defun [color=blue][b]c:[/b][/color]MyCommand()
;;; add your code here
)

Also, it was better to start a new thread for your issue instead of appending to this one; may ask a moderator to fix this for you.

I wonder how can you write codes without being known how to invoke it .

I wonder how can you write codes without being known how to invoke it .

There is nothing that prevents one to run a block of code lines instead of a function/command.

They said , that they designed it , so that might be copy and paste of code nothings more .

Thanks MSasu I work with Defun C:XXX proberly but I want the command to be like Autocad command for example line command or pline command when i check the properties the cad tell me that is line ... I want cad to tell me my the XXX command

Regards

Seems that you are looking to register a custom entity type, not to define a command. I'm afraid that this isn't available in AutoLISP - you should investigate the ARX technology instead (i.e. ARCALIGNEDTEXT from Express pack).

Make the object a block when you click on it Autocad can say block "roll of plate" an attribute will display "Xm long"