Stalkerx777

H17 Introduced a new Python API for the viewport (Python states), this is a way to go if you need viewport interaction. If you want to catch an event in the whole Houdini app, then the trick I posted above should work, however, keep in mind, it must run in the main thread. Pretty much every place from which you can start Python code in Houdini will put it in the main thread, EXCEPT the Python shell - it runs in its own thread.

I've done something similar recently. You've picked the right way - by implementing an HScript command. The UI part is much simpler to implement with Qt though.

Try to get a definition instance (node.type().definition()) and call some methods of it. I'm pretty sure you'll get an exception somewhere and so try-except would be your answer. As for auto detect, see 456.py startup file, where you could iterate over all node types and check their definitions (see hou.hda.loadedFiles() example in the docs).

I work with hrpyc every day and haven't seen such a problem before. Consider this as a bug and report to SideFx. As a workaround try hou.hscript("fcur").

If you don't have skills and experience in c++ compilation and build systems such as Make or Cmake, just stick to hcustom, it's there for a reason.

Seems like what you want is a semi-dynamic menu, which gets updated on request. You can do something along those lines: In the menu script: return hou.phm().my_menu_values(kwargs['node']) In your PythonModule: LIST_DIR = False def my_menu_values(node): if not node.cachedUserData('menu_values'): node.setCachedUserData('menu_values', read_dir_or_something()) if LIST_DIR: node.setCachedUserData('menu_values', read_dir_or_something()) return node.cachedUserData('menu_values') Then in your button callback: kwargs['node'].phm().LIST_DIR = True # force menu to cook kwargs['node'].parm('my_menu').menuItems() kwargs['node'].phm().LIST_DIR = False P.S. Untested

Without looking into that classes, I would assume that UT_JSONValueMap->append() takes ownership of its contents and deleting rootMap also deletes the floatV data, and so you're getting a "double free" error. See if UT_JSONValueMap owns the values and if so, you don't need to delete floatV yourself.

How about just adding a control parm to the node and set it to True when you want it to cook. Or use hou.Node.userData for that matter. if node.evalParm('cook?'): # Yes please

Don't complicate life, just use the Hython interpreter unless you absolutely must stick to system's Python.

No there is no way to do that unless you build XML files with Python before Houdini initialize.

alias houdini_run='cd /opt/hfs16.5.595; source houdini_setup >> /dev/null; cd - >> /dev/null; env PATH=/home/jim/yt-conda/bin:/home/jim/yt-conda/sbin:$PATH houdini'

It's true that official release does not provide Python2.7 binaries for windows: https://download.qt.io/official_releases/QtForPython/pyside2/

What is a "user defined property page"?

Right, here is a working solution: n = hou.node('/obj/geo1') ptg = n.parmTemplateGroup() pt = ptg.find('myParm') pt.setScriptCallback('print 123') pt.setScriptCallbackLanguage(hou.scriptLanguage.Python) ptg.replace('myParm', pt) n.setParmTemplateGroup(ptg)