JsSetObjectBeforeCollectCallback

Sets a callback function that is called by the runtime before garbage collection of an object.

Syntax

STDAPI_(JsErrorCode)
    JsSetObjectBeforeCollectCallback(
    _In_ JsRef ref,
    _In_opt_ void *callbackState,
    _In_ JsObjectBeforeCollectCallback objectBeforeCollectCallback);

Parameters

• ref: The object for which to register the callback.
• callbackState: User provided state that will be passed back to the callback.
• objectBeforeCollectCallback: The callback function being set. Use null to clear previously registered callback.

Return Value

The code JsNoError if the operation succeeded, a failure code otherwise.

Remarks

The callback is invoked on the current runtime execution thread, therefore execution is blocked until the callback completes.