UIHints.h file

Field hints: per-field tweaks to how an editor behaves.

An editor is picked by field type. A hint adjusts it for one field (limits, decimals, units, style class) without writing a new editor.

Hints::Min(0), Hints::Max(100), Hints::Decimals(1), Hints::Units("m/s")      // on a field
const int places = field.Get(Hints::Decimals, 2);                            // in an editor

Hints are typed constants, not strings, so:

a misspelt hint or a wrong value type doesn't compile;
editors declare which hints they read (EditorRegistry::Register), so a hint the editor ignores is reported with the field's name;
contradictory hints (Min above Max) are reported the same way;
each carries a description a tool can list.

Games and plugins declare their own the same way, in their own namespace:

namespace WeaponHints { inline constexpr GGHint<float> Recoil{ "Recoil", "How far a shot kicks, in degrees" }; }

Namespaces

namespace GGUI
namespace GGUI::Hints: Hints read by the built-in editors.

Classes

struct GGUI::GGHintInfo: Type-erased part of a hint. Identity is the address of the constant.
struct GGUI::GGFieldHint: A hint attached to a field, with its value.
template<typename T> struct GGUI::GGHint: A hint of value type T: a number type, bool, or std::string_view. Declared as a constant; its address is its identity.