Delete all animation Keys using MAXScript in 3ds Max globally

Question

I am trying to use MAXScript to delete all animation Keys from my scene using MAXScript. At the moment I am using the mouse and pressing CTRL + A to select all objects thus bringing up the keys for all objects in my scene. I am then selecting all Keys on the animation timeline using my mouse, and then selecting all keys on the timeline, and then deleting them. How do I do it in MAXScript?

I have found this in the MAXScript documentation, but I don't know how to use it:

deleteKeys <controller> [#allKeys | #selection]  

I tried using

deleteKeys globaltracks #allKeys

but that didn't seem to do anything.

Answer 1

this is a method I posted as part of this challenge on CGTalk. I've modified it to delete all keys on animated controllers. It manipulates the built-in Trackbar custom filter functions to automatically iterate all controllers of all objects, instead of having to retrieve all controllers youself.

(   
fn filterCallbackFunction theAnimatable theParent theSubAnimIndex theGrandParent theNode = 
(       
    if isController theAnimatable do deleteKeys theAnimatable #allKeys
    true
)

with redraw off
(   
    trackbar.filter = #all
    local filtind = maxops.trackbar.registerFilter filterCallbackFunction undefined "." 1 active:on
    disableRefMsgs()
    local sel = getCurrentSelection()
    select objects
    maxops.trackbar.redraw forceRedraw:on
    maxops.trackbar.unregisterfilter filtind        
    select sel
    enableRefMsgs()
    ok
)
)

Edit: Sorry, or just use this :)

deleteKeys objects #allKeys