Transfering Variable to another AUTO CAD session (Any body can help)

Dear all,

I am storing one AutoCad variable in one drawing, How i can get this variable in another drawing by keeping the SDI mode as 1.

Read about this function .

vl-propagate

Currently iam using vl-propagate only. But It will work in one autocad session only not in another autocad. I need when i open new autocad session like by keeping SDI mode as 1. If it is 0 means vl-propagate will work.

To transfer between two simultaneous AutoCAD sessions I will use a temporary file.

(getvar "TEMPPREFIX")

Regards,

Mircea

Maybe try using the blackboard namespace - vl-bb-set / vl-bb-ref

I think that VL-BB-* functions will work only between drawings of the same AutoCAD session (MDI); the OP was looking for a solution to comunicate between drawings from different sessions (SDI = 1).

Regards,

Mircea

I think that VL-BB-* functions will work only between drawings of the same AutoCAD session (MDI); the OP was looking for a solution to comunicate between drawings from different sessions (SDI = 1).

The blackboard namespace exists outside of the document namespace, so should be available as long as the Application is running, regardless of whether a drawing is open.

I'm afraid I can not agree. Single Drawing Interface (SDI) means that a separate AutoCAD instance (session) exists for each drawing opened simultaneously at a given time; the blackboard isn’t shared between those instances of the application.

Regards,

Mircea

I'm afraid I can not agree. Single Drawing Interface (SDI) means that a separate AutoCAD instance (session) exists for each drawing opened simultaneously at a given time; the blackboard isn’t shared between those instances of the application.

I guess we are both right - the behaviour you describe only occurs if a drawing is opened outside of the current running application, if you open a drawing from within the application, you are prompted to close the current drawing and the blackboard namespace data is still accessible.

close the current drawing and the blackboard namespace data is still accessible.

This is entirely true.

So, the OP will have to decide what fit his/her case - I had the impression that he/she is looking to communicate between simultaneous opened drawings.

Regards,

Mircea

can you just write the information to a file and then call it to the other drawing?

sorry for late response.

I used (vl-bb-set 'a 5) in one Autocad and i tried to get the same variable in another Autocad by (vl-bb-ref 'a). But i cant get the variable value. It is working in MDI not in SDI.

can you just write the information to a file and then call it to the other drawing?

This was my first thought too. I use text files for all kinds of things and this is a good way of storing a value across anything including a reboot.