# BufferedPaintSetAlpha

```csharp
[DllImport("uxtheme.dll", SetLastError = true)]
public static extern HRESULT BufferedPaintSetAlpha(
   IntPtr hBufferedPaint,
   ref RECT prc,
   byte alpha
);
```

Microsoft documentation: [Link](https://docs.microsoft.com/en-us/windows/win32/api/uxtheme/nf-uxtheme-bufferedpaintsetalpha)