How to check if a drawing is already opened ?

Hello ....

How can I check if my drawing is already opened to avoid using the function vla-open to open it once again ?

Thanks

Search the forum, this has been answered many times.

Any hint to the key word for searching Lee .

Hint ..

Hi Lee .

Does it mean that I should look for the file with the extension .dwl if it is available whic related to specifc name of drawing ?

This is what I have understood from the hint guidlines .

Thanks a lot .

Queen Band (song says) : The show must go on .

I am still don't know how to check it out .

Anyone could please ?

Type WHOHAS in ACAD09.

Type WHOHAS in ACAD09.

Thanks buddy , but I looking for lisp codes .

Tharwat, is that you?

Thanks buddy , but I looking for lisp codes .

Thank you buddy .

Highly appreciated .

Highly appreciated .

Lee, can I get code for checking if Tharwat is posting as an Michaels?

What was that other guy's name we had all the problems with?

What

Tharwat, is that you?

This is the second time you're hitting me with your guessing that I am thawrat or anyone else ( with all respect to all of course ) , if you do not like my way of posting , please do igonre my posts or teach me how to build my phrases and sentences to let you read my words with a smile .