One of the things I am continuously forgetting is the value of LOADCTRLS I need to add to the registry. Below are the possible values (taken straight from the ObjectARX documentation):

 

0x01 = Load application on detection of proxy object
0x02 = Load the application on AutoCAD startup
0x04 = Load the application on command invocation
0x08 = Load the application on request by user or other application
0x10 = Do not load the application
0x20 = Load the application transparently

 

Of course, these values can be added when required.

 

Generally I will use either the 0x02 value when I have reactors that need to be added to all documents, or will combine 0x04 & 0x08 for applications that simply add a command.

 

I have not yet tried creating proxy objects, so have not had to play with these values.