Undo's

[sibarrick]

Does anyone know if there is a way to registry parameter changes into the undo system.

I'm using an initialise button to stick values into parameters in my sop but if I then use crtl Z to undo nothing happens. I assume therefore I need to tell houdini prior to my parameter changes that the user might need to undo them???

[edward]

In your callback function, add a new variable:

UT_AutoUndoblock u("My Undo Label", ANYLEVEL);

Then set your parameters within the same scope. Make sure you're setting them using the OP_Parameter::set*() functions.

[sibarrick]

Cool! it works. So easy