Input Registry Emulator

A real `input` is fixed at compile time - the input dialog and .set file support come free, but nothing in the program can list "what parameters do I have and what are their current values" at runtime, because MQL4 has no reflection API at all. Anything that wants a dynamic, named, typed parameter list - a config panel built from a loaded preset, a generic .set-file-style dumper, a parameter set swapped between named profiles - has to build that bookkeeping by hand, every time, from scratch. This header is that bookkeeping, done once. CInputRegistry holds one parallel set of fixed-size arrays per concrete type (int, double, bool, string - MQL4 has no variant type to unify them), looked up by name with a linear scan, since that is the only kind of "find a field by name" MQL4 can do at all. Numeric entries can carry an optional min/max range supplied at registration time; SetInt/SetDouble clamp silently to that range rather than rejecting an out-of-range value outright, which suits a config-panel use case where a slider or typed field should just settle at the boundary. A duplicate registration or a type-mismatched set/get is rejected and logged rather than silently overwriting or coercing, so a copy-paste mistake in a long list of Register calls shows up in the journal immediately instead of producing a quietly wrong value later. This does not replace real `input` declarations, and is not trying to - it is for parameters a program builds or receives dynamically, after compile time, where a real `input` cannot apply. Notes and limitations - Capped at 64 entries (INPUT_REGISTRY_MAX_ENTRIES), fixed at compile time. Registration past the cap is rejected and logged, not silently dropped. - Lookup is a linear scan by name - fine for tens of entries in a config panel, not intended as a general-purpose associative container for thousands of keys. - The min/max range on a numeric entry only applies through SetInt/ SetDouble; setting the default value directly at RegisterInt/ RegisterDouble time is never clamped, since that value is the registration call's own explicit choice. - A min==max pair (including the 0/0 default) is treated as "no bound", matching the convenience of not having to pass a range for an unrestricted field. - This is an in-memory registry only - it does not persist to or load from a .set file itself; EntryToString's "name=value" shape is chosen to make pasting into one by hand straightforward.

Script · MT5 · v1.0 · Free

Tags: MT5 Script · MQL5 Source Code

MQL4 & MQL5 scripts · PolyMaria