Q24877: "?CANNOT DISPLAY" Error Not Documented in CodeView Documents

Article: Q24877
Product(s): See article
Version(s): 2.00 2.10 2.20 2.30 | 2.20 2.30
Operating System(s): MS-DOS | OS/2
Keyword(s): ENDUSER | TAR64267 docerr | mspl13_basic
Last Modified: 21-AUG-1989

Problem:

When trying to evaluate (?), a function that returns void, I get the
error "?CANNOT DISPLAY". I cannot find this error message in the
"Microsoft CodeView Utilities and Editor" manual.

Response:

This error message is not contained in the CodeView manual.

The "?CANNOT DISPLAY" error message will be displayed in cases where
the expression evaluator cannot return a value, such as a function
returning void.