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HwndSource.UsesPerPixelOpacity Property

  • Reference

Definition

Namespace:
System.Windows.Interop
Assembly:
PresentationCore.dll

Gets a value that declares whether the per-pixel opacity of the source window content is respected.

public:
 property bool UsesPerPixelOpacity { bool get(); };
public bool UsesPerPixelOpacity { [System.Security.SecurityCritical] get; }
public bool UsesPerPixelOpacity { get; }
[<get: System.Security.SecurityCritical>]
member this.UsesPerPixelOpacity : bool
member this.UsesPerPixelOpacity : bool
Public ReadOnly Property UsesPerPixelOpacity As Boolean

Property Value

Boolean

true if the system uses per-pixel opacity; otherwise, false.

Attributes
SecurityCriticalAttribute

Remarks

When you enable per-pixel opacity, the system no longer draws the non-client area. This is because the intended purpose of UsesPerPixelOpacity is to show non-rectangular top-level UI that works in interoperation scenarios. Therefore, showing the rectangular non-client area defeats that purpose.

Applies to