Method SetKeyEventNativeData

engine/3rdparty/imgui/imgui.cpp:1318–1336

[Optional] Call after AddKeyEvent(). Specify native keycode, scancode + Specify index for legacy <1.87 IsKeyXXX() functions with native indices. If you are writing a backend in 2022 or don't use IsKeyXXX() with native values that are not ImGuiKey values, you can avoid calling this.

// Specify native keycode, scancode + Specify index for legacy <1.87 IsKeyXXX() functions with native indices.
// If you are writing a backend in 2022 or don't use IsKeyXXX() with native values that are not ImGuiKey values, you can avoid calling this.
void ImGuiIO::SetKeyEventNativeData(ImGuiKey key, int native_keycode, int native_scancode, int native_legacy_index)
{
    if (key == ImGuiKey_None)
        return;
    IM_ASSERT(ImGui::IsNamedKey(key)); // >= 512
    IM_ASSERT(native_legacy_index == -1 || ImGui::IsLegacyKey(native_legacy_index)); // >= 0 && <= 511
    IM_UNUSED(native_keycode);  // Yet unused
    IM_UNUSED(native_scancode); // Yet unused

    // Build native->imgui map so old user code can still call key functions with native 0..511 values.
#ifndef IMGUI_DISABLE_OBSOLETE_KEYIO
    const int legacy_key = (native_legacy_index != -1) ? native_legacy_index : native_keycode;
    if (ImGui::IsLegacyKey(legacy_key))
        KeyMap[legacy_key] = key;
#else
    IM_UNUSED(key);
    IM_UNUSED(native_legacy_index);
#endif
}

void ImGuiIO::AddKeyModsEvent(ImGuiKeyModFlags modifiers)
{