2.3. ID stack — push/pop, scoped, hashing
The ID-stack helper — with_id(s) { ... } — for the few cases where the
indexed-widget form (IDENT[i] / IDENT[key], API_REWORK §4.4) can’t reach.
Pushes s onto both ImGui’s internal ID stack and the boost container-path
stack; both pop on block return. Use it for composed sub-panels rendered by a
helper that doesn’t know its slot, or for data-driven structure the call_macro
can’t trace lexically.
2.3.1. ID stack
- with_id(s: string; blk: block<():void> )
Run blk with s pushed onto ImGui’s ID stack and the boost container-path; both pop on return.
Reach for this only when the indexed-widget form (IDENT[i]) can’t — composed helpers, data-driven structure. API_REWORK §4.8.
- Arguments:
s : string
blk : block<void>
- with_override_id(id: uint; blk: block<():void> )
Like with_id but pushes id onto the ID stack RAW (as-is, not hashed),
always popping on return. Use it to pin an exact, stable ID — one that
survives renaming the widget; GetID under it equals GetIDWithSeed(.., id).
- Arguments:
id : uint
blk : block<void>