set_custom_hook

Modify the a global hook binding

void
set_custom_hook(Application_Links* app,
                Hook_ID hook_id,
                Void_Func* func_ptr);

app

the standard custom layer context pointer

hook_id

the id of the hook to be modified

func_ptr

a pointer to the hook function, the function pointer must have a specific signature to match the hook_id's expected signature, but this call does not do the type checking for this, so watch out for that