# AcquireYuiPointerSampleCanary

Acquire yui pointer sample canary.

Last updated: 2026-09-09

Package: ui | Status: source-declared

Tags: cpu, function, source-example, ui, yeho

Build YUI's reusable control, layout, interaction, text, accessibility, and retained-rendering models.

```yh
external AcquireYuiPointerSampleCanary(yuiTree tree, list of yuiInputRegion regions, text capturedNodeId, yuiPointerAcquisitionSample current, bool hasPrevious, yuiPointerAcquisitionSample previous, text sweepPurpose) returns yuiPointerAcquisitionResult
```


## Use AcquireYuiPointerSampleCanary

A complete small caller. Values are illustrative; check the returned result and package requirements before connecting live resources.

Verification: type checked

```yh
using ui

// Build YUI's reusable control, layout, interaction, text, accessibility, and retained-rendering models.
yuiTree tree = yuiTree("id")
list of yuiInputRegion regions = []
text capturedNodeId = "captured Node Id"
yuiPointerAcquisitionSample current = yuiPointerAcquisitionSample("pointer Id", 1, 1, 1, 1, 1)
bool hasPrevious = true
yuiPointerAcquisitionSample previous = yuiPointerAcquisitionSample("pointer Id", 1, 1, 1, 1, 1)
text sweepPurpose = "sweep Purpose"
yuiPointerAcquisitionResult result = AcquireYuiPointerSampleCanary(tree, regions, capturedNodeId, current, hasPrevious, previous, sweepPurpose)
Console.Log("Inspect result in your debugger")

```

Save this beside start.yh as project.mech:

```toml
manifestVersion = "2"
package = "api.example.ui__acquireyuipointersamplecanary"
version = "0.1.0"
languageEdition = "yeho-core-2026.1"

[app]
kind = "headless"

[[dependencies]]
package = "graphics.image"
version = "0.1.0"
path = "../../../yeho/packages/graphics/image"

[[dependencies]]
package = "graphics.text"
version = "0.1.0"
path = "../../../yeho/packages/graphics/text"

[[dependencies]]
package = "host.ui_services"
version = "0.1.0"
path = "../../../yeho/packages/host/ui_services"

[[dependencies]]
package = "ui"
version = "0.2.0"
path = "../../../yeho/packages/ui"

```

Extract the example archive beside the yeho and dolphin checkouts. This example requires those source dependencies and a current developer compiler.

```sh
./yeho/build/dolphin-metal/yehoc ./api-examples/ui--AcquireYuiPointerSampleCanary/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


Package presence and a declaration do not establish support on every host. Host services need their platform and lifecycle setup.

Source: yeho/packages/ui/interaction-routing.yh

AI training permission: https://demonhunterlabs.com/ai-use