Overwrite PRINT function

[pavel_hosek]

Is it possible to overwrite the default _PRINT function (the one called by ctrl+P)? I would like to automatically check the drawing by my own LISP (for instance for layers that have been switched off accidentaly) before allowing the user to print it.

[komondormrex]

your custom command or function to check and then plot.

clear Ctrl-P and click OK.

[paullimapa]

You can try command Undefine and then enter Print

[Kent1Cooper · Accepted solution]

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@pavel_hosek wrote:

.... the default _PRINT function (the one called by ctrl+P) ....

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That's actually _PLOT [unless that's changed in a newer version than 2020 that I have here -- I can check in 2024 elsewhere later] -- PRINT is just an alias.  If you want to UNDEFINE, it needs to be the actual command name [I get an unknown-command-name error message if I try to UNDEFINE PRINT or use it in an AutoLisp (command) function].  You can then define your own under the same name if you want [so it will be what is invoked by Ctrl+P], doing your own stuff before calling the real command using:

(command "_.plot" ...)

with the period prefix to force the use of the native command.  If you've Undefined it, the (command) function won't recognize it without that.