Class Enums.Signals

Signals that can be used on an Image. See SignalConnect(String, Delegate, IntPtr).

Inheritance

System.Object

Enums.Signals

Inherited Members

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.ToString()

Namespace: NetVips

Assembly: NetVips.dll

Syntax

public static class Signals

Fields

Eval

Evaluation progress.

Declaration

public const string Eval = "eval"

Field Value

Type	Description
System.String

Remarks

The eval signal is emitted once per work unit (typically a 128 x 128 area of pixels) during image computation.

You can use this signal to update user-interfaces with progress feedback. Beware of updating too frequently: you will usually need some throttling mechanism.

PostEval

Evaluation is ending.

Declaration

public const string PostEval = "posteval"

Field Value

Type	Description
System.String

Remarks

The posteval signal is emitted once at the end of the computation of Image. It's a good place to shut down evaluation feedback.

PreEval

Evaluation is starting.

Declaration

public const string PreEval = "preeval"

Field Value

Type	Description
System.String

Remarks

The preeval signal is emitted once before computation of Image starts. It's a good place to set up evaluation feedback.