runtime.Mouse · builtin ·

Mouse.IsDown

Is down through the Mouse runtime.

builtincpumouseyeho

Built into Yeho; no package import is needed. Native services require an admitted host and the correct resource lifecycle.

Mouse.IsDown(text button) -> bool

Status: registered-intrinsic

Parameters

text button
Supply button as text.

Call Mouse.IsDown

A complete typed caller with illustrative arguments. Native operations need the corresponding host and resources.

cpu · builtin · type checked

text button = "button"
bool result = Mouse.IsDown(button)
Console.Log(Text.From(result))
project.mech
manifestVersion = "2"
package = "api.example.runtime__mouse_isdown"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"
Notes and source

The example checks the call shape. Opening windows, recording audio, changing files, network operations, and process operations have real effects when run. Follow the corresponding package lifecycle before using live resources.

yeho/src/compiler/common/intrinsic_registry.cpp:1387