Class GValue

Wrap NetVips.Internal.GValue in a C# class.

Inheritance

System.Object

GValue

Implements

System.IDisposable

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 class GValue : IDisposable

Remarks

This class wraps NetVips.Internal.GValue in a convenient interface. You can use instances of this class to get and set GObject properties.

On construction, NetVips.Internal.GValue is all zero (empty). You can pass it to a get function to have it filled by GObject, or use init to set a type, set to set a value, then use it to set an object property.

GValue lifetime is managed automatically.

Constructors

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GValue()

Initializes a new instance of the GValue class.

Declaration

public GValue()

Fields

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ArrayDoubleType

The fundamental type for VipsArrayDouble.

Declaration

public static readonly IntPtr ArrayDoubleType

Field Value

Type	Description
System.IntPtr

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ArrayImageType

The fundamental type for VipsArrayImage.

Declaration

public static readonly IntPtr ArrayImageType

Field Value

Type	Description
System.IntPtr

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ArrayIntType

The fundamental type for VipsArrayInt.

Declaration

public static readonly IntPtr ArrayIntType

Field Value

Type	Description
System.IntPtr

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BandFormatType

The fundamental type for VipsBandFormat. See Enums.BandFormat.

Declaration

public static readonly IntPtr BandFormatType

Field Value

Type	Description
System.IntPtr

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BlendModeType

The fundamental type for VipsBlendMode. See Enums.BlendMode.

Declaration

public static readonly IntPtr BlendModeType

Field Value

Type	Description
System.IntPtr

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BlobType

The fundamental type for VipsBlob.

Declaration

public static readonly IntPtr BlobType

Field Value

Type	Description
System.IntPtr

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GBoolType

The fundamental type corresponding to gboolean.

Declaration

public static readonly IntPtr GBoolType

Field Value

Type	Description
System.IntPtr

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GDoubleType

The fundamental type corresponding to gdouble.

Declaration

public static readonly IntPtr GDoubleType

Field Value

Type	Description
System.IntPtr

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GEnumType

The fundamental type from which all enumeration types are derived.

Declaration

public static readonly IntPtr GEnumType

Field Value

Type	Description
System.IntPtr

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GFlagsType

The fundamental type from which all flags types are derived.

Declaration

public static readonly IntPtr GFlagsType

Field Value

Type	Description
System.IntPtr

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GIntType

The fundamental type corresponding to gint.

Declaration

public static readonly IntPtr GIntType

Field Value

Type	Description
System.IntPtr

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GObjectType

The fundamental type for GObject.

Declaration

public static readonly IntPtr GObjectType

Field Value

Type	Description
System.IntPtr

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GStrType

The fundamental type corresponding to null-terminated C strings.

Declaration

public static readonly IntPtr GStrType

Field Value

Type	Description
System.IntPtr

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GUint64Type

The fundamental type corresponding to guint64.

Declaration

public static readonly IntPtr GUint64Type

Field Value

Type	Description
System.IntPtr

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ImageType

The fundamental type for VipsImage.

Declaration

public static readonly IntPtr ImageType

Field Value

Type	Description
System.IntPtr

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RefStrType

The fundamental type for VipsRefString.

Declaration

public static readonly IntPtr RefStrType

Field Value

Type	Description
System.IntPtr

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SourceType

The fundamental type for VipsSource. See Source.

Declaration

public static readonly IntPtr SourceType

Field Value

Type	Description
System.IntPtr

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TargetType

The fundamental type for VipsTarget. See Target.

Declaration

public static readonly IntPtr TargetType

Field Value

Type	Description
System.IntPtr

Methods

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Dispose()

Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.

Declaration

public void Dispose()

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Dispose(Boolean)

Releases unmanaged and - optionally - managed resources.

Declaration

protected void Dispose(bool disposing)

Parameters

Type	Name	Description
System.Boolean	disposing	true to release both managed and unmanaged resources; false to release only unmanaged resources.

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Finalize()

Finalizes an instance of the GValue class.

Declaration

protected void Finalize()

Remarks

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.

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FromEnum(IntPtr, Int32)

Turn an int back into an enum string.

Declaration

public static string FromEnum(IntPtr gtype, int enumValue)

Parameters

Type	Name	Description
System.IntPtr	gtype	The GType.
System.Int32	enumValue	The integer to convert.

Returns

Type	Description
System.String	An enum value as string.

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Get()

Get the contents of a GValue.

Declaration

public object Get()

Returns

Type	Description
System.Object	The contents of this GValue.

Remarks

The contents of the GValue are read out as a C# type.

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GetTypeOf()

Get the GType of this GValue.

Declaration

public IntPtr GetTypeOf()

Returns

Type	Description
System.IntPtr	The GType of this GValue.

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Set(Object)

Set a GValue.

Declaration

public void Set(object value)

Parameters

Type	Name	Description
System.Object	value	Value to be set.

Remarks

The value is converted to the type of the GValue, if possible, and assigned.

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SetType(IntPtr)

Set the type of a GValue.

Declaration

public void SetType(IntPtr gtype)

Parameters

Type	Name	Description
System.IntPtr	gtype	Type the GValue should hold values of.

Remarks

GValues have a set type, fixed at creation time. Use SetType to set the type of a GValue before assigning to it.

GTypes are 32 or 64-bit integers (depending on the platform). See TypeFind.

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ToEnum(IntPtr, Object)

Turn a string or integer into an enum value ready to be passed into libvips.

Declaration

public static int ToEnum(IntPtr gtype, object value)

Parameters

Type	Name	Description
System.IntPtr	gtype	The GType.
System.Object	value	The string or integer to convert.

Returns

Type	Description
System.Int32	An enum value ready to be passed into libvips.

Implements

System.IDisposable