PyRx based extension

[gswifort]

I'm thinking about this scenario.
Based on PyRx, I created an extension for Autocad for which I would like to create a simple installer.
In the global directory (%localappdata%\Programs\PyRx) I would have to install everything related to PyRx (skip this step if it is already installed).
I would like my extension to be able to be added as automatically loaded when CAD starts.
I wouldn't want to modify the global pyrx_onload.py for this.
I also cannot (under current assumptions) add my own pyrx_onload.py because PyRx.arx may already be loaded and then my pyrx_onload.py will not be loaded.

I see two solutions:

1. Load the pyrx_onload.py file from PyRxLoader.arx, then just rename it to MyExtName.arx - my pyrx_onload.py file will be loaded, and PyRx.arx will be skipped because it is already loaded,
2. Establish some procedure based on which other extensions are loaded when loading PyRx.arx, e.g. registry entries pointing to pyrx_onload.py files of specific extensions.

[CEXT-Dan]

Not sure I have any advice, there’s lots of ways you can load modules through one of the AutoLISP mechanisms
https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/Automatically-load-AutoLISP-routines.html

I think you can use a .bundle too. you just have to make sure python is loaded early.

pyrx_onload.py was intended for this, the installer no longer replaces or installs the file

[gswifort]

I tried to use solution 1 provided by Autodesk (I use ZWCAD).
The problem occurs when PyRx is not loaded, then I load RxLoader, but after loading it, PyRx loads with a delay, so I cannot immediately invoke the PYLOAD command. Splitting it into two files didn't help either. I'm bad at AutoLisp, I have no other ideas.

Below is my broken code:

; file 1
(defun c:LoadPyRx ()
  (progn
    (if (not (arxloaded "RxLoaderZ25.0.zrx"))
      (progn
        (setq PyRxLoaderPath (strcat (getenv "localappdata") "\\Programs\\PyRx\\Bin\\RxLoaderZ25.0.zrx"))
        (if (findfile PyRxLoaderPath)
          (arxload PyRxLoaderPath)
          (progn
            (princ "\nFile not found: PyRxLoader.arx")
            (exit)
          )
        )
      )
    )
)

(defun arxloaded (arxname)
  (if (member arxname (arx))
    T
    nil
  )
)

(c:LoadPyRx)

; file 2
(defun c:LoadPyRx2 ()
  (progn
    (if (not (arxloaded "pyrxz25.0.zrx"))
      (progn
        (princ "\nNot loaded: PyRxZ25.0.zrx")
        (exit)
      )
      (progn
        (command "FILEDIA" "0")
        (command "PYLOAD" "C:\\Users\\gswi\\AppData\\Local\\Programs\\PyRx\\Bin\\pyrx_onload.py")
        (command "FILEDIA" "1")
      )
    )
  )
  (princ)
)

(c:LoadPyRx2)

[CEXT-Dan]

Oh yeah, originally Py_InitializeEx and wxPyGetAPIPtr crashed when called in On_kInitAppMsg, so I had to move it to OnIdleWinMsg, so there is a delay. I think the reason is either Python or wxPython won’t load in the UI thread.

Since then, the loader module was added, so I can try moving the Py_InitializeEx back to On_kInitAppMsg, this will mean they the loader must always be used. I had considered that that someday the loader may not be necessary, if the proper environment was already setup

There’s also a delay in pyrx_onload, it runs in the next on idle sequence after the first document is loaded. Also acedDefun fails if it’s run in the application context, ZwCAD is missing beginExecuteInCommandContext, so I have to add another hack lol.

The Loading sequence is very complex and the behavior is different between all the platforms.

Unfortuatly, if On_kInitAppMsg doesn't work, pyrx_onload may be your only option

[CEXT-Dan]

I’ve removed the delay, everything seems to work fine, all tests pass.
So maybe this will fix loading with lisp, I’ll publish a build

[gswifort]

It works!
Although the order of the logs is not preserved (but that's no problem).

d:\Users\GSWI\Download\autoload.lsp load successfully!
Command: 
PyRx version <1.3.029.20240717> loaded:
Python Interpreter Loaded successfully!
FILEDIA

Enter FILEDIA's new value  <1>: 0
Command: PYLOAD
Select Python File: C:\Users\gswi\AppData\Local\Programs\PyRx\Bin\pyrx_onload.py
Success module PYRX_ONLOAD is loaded: onload: C:\Users\gswi\AppData\Local\Programs\PyRx\Bin\pyrx_onload.py
PyRxLoader::getPythonVenvPath 
PyRxLoader::thisModulePath C:\Users\gswi\AppData\Local\Programs\PyRx\Bin\
PyRxLoader::getInstallPath C:\Users\gswi\AppData\Local\Programs\PyRx
PyRxLoader::getIniPath C:\Users\gswi\AppData\Local\Programs\PyRx\Bin\PyRx.INI
PyRxLoader::validateINIPythonInstallPath c:\users\gswi\appdata\local\programs\python\python312
PyRxLoader::validateINIwxPythonPath c:\users\gswi\appdata\local\programs\python\python312\Lib\site-packages\wx
Loading PyRx from ini condition
PyRxLoader::PyRxLoader_loader Loading, C:\Users\gswi\AppData\Local\Programs\PyRx\Bin\PyRxZ25.0.Zrx
Finished PyRxLoader_loader
Command: FILEDIA

Enter FILEDIA's new value  <0>: 1

[CEXT-Dan]

Yay!