# WindowsText.CaptureRunsWithAlpha

Capture runs with alpha through the WindowsText runtime.

Last updated: 2026-09-09

Package: runtime.WindowsText | Status: registered-intrinsic

Tags: builtin, cpu, windowstext, yeho

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

```yh
WindowsText.CaptureRunsWithAlpha(text value, text font_family, int font_weight, int font_size_Q26_6, text locale, int maximum_width_Q26_6, int maximum_height_Q26_6) -> int
```


## Call WindowsText.CaptureRunsWithAlpha

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

Verification: type checked

```yh
text value = "value"
text font_family = "font family"
int font_weight = 1
int font_size_Q26_6 = 1
text locale = "locale"
int maximum_width_Q26_6 = 1
int maximum_height_Q26_6 = 1
int result = WindowsText.CaptureRunsWithAlpha(value, font_family, font_weight, font_size_Q26_6, locale, maximum_width_Q26_6, maximum_height_Q26_6)
Console.Log(Text.From(result))

```

Save this beside start.yh as project.mech:

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

[app]
kind = "headless"

```

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/runtime--WindowsText.CaptureRunsWithAlpha/usage --backend cpu-oracle -o /tmp/yeho-example
/tmp/yeho-example
```


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.

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

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