dos_istextscr - dalefugier/DOSLib GitHub Wiki
Verifies that the AutoCAD text screen is open or visible. If the text screen is not open, or if it is minimized, then the function will return nil.
Syntax
(dos_istextscr)
Returns
T if the text screen is open.
nil if the text screen is not open.
Example
Command: (dos_istextscr)
nil
Command: (textscr)
Command: (dos_istextscr)
T