WslcSetContainerInitProcessIOCallbacks

Sets callbacks that receive the standard output, standard error, and exit code from the init process of a container that has not been started. See WslcProcessCallbacks for the individual callbacks.

STDAPI WslcSetContainerInitProcessIOCallbacks(
    _In_ WslcContainer container,
    _In_ const WslcProcessCallbacks* callbacks,
    _In_opt_ PVOID context);

Parameter	Type	Direction
container	WslcContainer	in
callbacks	const WslcProcessCallbacks*	in
context	PVOID	in, optional

Return value: HRESULT.

Call this function before WslcStartContainer, and start the container with WSLC_CONTAINER_START_FLAG_ATTACH. It has no effect after the container is already running.

Registering any callback through this function consumes both process I/O handles, so neither can subsequently be acquired with WslcGetProcessIOHandle. If registered, onExit runs after buffered I/O has been delivered and the I/O callbacks have returned. The caller owns context and must keep it valid until all registered callbacks have returned.

WslcProcessCallbacks callbacks = {0};
callbacks.onStdOut = OnStdIO;
callbacks.onStdErr = OnStdIO;
callbacks.onExit = OnProcessExit;

HRESULT hr = WslcSetContainerInitProcessIOCallbacks(container, &callbacks, context);
if (SUCCEEDED(hr))
{
    hr = WslcStartContainer(container, WSLC_CONTAINER_START_FLAG_ATTACH, NULL);
}