Event Callbacks in Houdini

[paxsonsa]

Can Houdini have Python Event Callbacks? Specifically when a the hip file is saved or when houdini closes?

[fathom]

if you find a solution, i'd love to hear it.  they really need to add a robust system-wide event system for such things.

[dedeks3000]

maybe this :

 

http://www.sidefx.com/index.php?option=com_forum&Itemid=172&page=viewtopic&p=146042&highlight=

[fathom]

yeah, you can kind of do some things by hijacking others.  like 456.py runs after you load a file.  atexit() runs when you close.  there are all sorts of parm and operator related events that could theoretically be used to mimic a real event system, but ideally they'd just implement one for reals.

 

hell, even a 789.py that runs when you save would be awesome.

 

edit: i suppose you could register all nodes to react to all events and check the status of the hipFile.hasUnsavedChanges() flag combined with the file path to detect saves and react to those.  but again, do we really have to resort to such hackery?

Edited September 3, 2015 by fathom

[Stalkerx777]

hou.ui.addEventLoopCallback

[Alexey Vanzhula]

And:

import hdefereval
hdefereval.executeDeferred( callback )

Just for executing callback once