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wpf-windows-are-rendered-without-clipping-when-extending-outside-a-single-monitor.md

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WPF windows are rendered without clipping when extending outside a single monitor

Scope

Minor

Version Introduced

4.6

Source Analyzer Status

Not planned

Change Description

In the .NET Framework 4.6 running on Windows 8 and above, the entire window is rendered without clipping when it extends outside of single display in a multi-monitor scenario. This is different from previous versions of the .NET Framework which would clip WPF windows that extended beyond a single display.

  • Quirked
  • Build-time break

Recommended Action

This behavior (whether to clip or not) can be explicitly set using the <EnableMultiMonitorDisplayClipping> element in <appSettings> in an application's configuration file, or by setting the EnableMultiMonitorDisplayClipping property at app startup.

Affected APIs

  • Not detectable via API analysis

Category

Windows Presentation Foundation (WPF)