PixelFormat Structure

Définition

Définit un format de pixel pour les images et les surfaces exprimées en pixels.Defines a pixel format for images and pixel-based surfaces.

public value class PixelFormat : IEquatable<System::Windows::Media::PixelFormat>
[System.ComponentModel.TypeConverter(typeof(System.Windows.Media.PixelFormatConverter))]
[System.Serializable]
public struct PixelFormat : IEquatable<System.Windows.Media.PixelFormat>
type PixelFormat = struct
Public Structure PixelFormat
Implements IEquatable(Of PixelFormat)
Héritage
PixelFormat
Attributs
Implémente

Exemples

L’exemple suivant montre comment créer PixelFormat et rechercher la valeur de ses propriétés.The following example shows how to create a PixelFormat and find the value of its properties.

public PixelFormat createPixelFormat()
{
    // Create a PixelFormat object.
    PixelFormat myPixelFormat = new PixelFormat();
    
    // Make this PixelFormat a Gray32Float pixel format.
    myPixelFormat = PixelFormats.Gray32Float;

    // Get the number of bits-per-pixel for this format. Because
    // the format is "Gray32Float", the float value returned will be 32.
    int bpp = myPixelFormat.BitsPerPixel;

    // Get the collection of masks associated with this format.
    IList<PixelFormatChannelMask> myChannelMaskCollection = myPixelFormat.Masks;

    // Capture the mask info in a string.
    String stringOfValues = " ";
    foreach (PixelFormatChannelMask myMask in myChannelMaskCollection)
    {
        IList<byte> myBytesCollection = myMask.Mask;
        foreach (byte myByte in myBytesCollection)
        {
            stringOfValues = stringOfValues + myByte.ToString();
        }
    }

    // Return the PixelFormat which, for example, could be 
    // used to set the pixel format of a bitmap by using it to set
    // the DestinationFormat of a FormatConvertedBitmap.
    return myPixelFormat;
}
        Public Function createPixelFormat() As PixelFormat
            ' Create a PixelFormat object.
            Dim myPixelFormat As New PixelFormat()

            ' Make this PixelFormat a Gray32Float pixel format.
            myPixelFormat = PixelFormats.Gray32Float

            ' Get the number of bits-per-pixel for this format. Because
            ' the format is "Gray32Float", the float value returned will be 32.
            Dim bpp As Integer = myPixelFormat.BitsPerPixel

            ' Get the collection of masks associated with this format.
            Dim myChannelMaskCollection As IList(Of PixelFormatChannelMask) = (myPixelFormat.Masks)

            ' Capture the mask info in a string.
            Dim stringOfValues As String = " "
            Dim myMask As PixelFormatChannelMask
            For Each myMask In myChannelMaskCollection
                Dim myBytesCollection As IList(Of Byte) = myMask.Mask
                Dim myByte As Byte
                For Each myByte In myBytesCollection
                    stringOfValues = stringOfValues + myByte.ToString()
                Next myByte
            Next myMask

            ' Return the PixelFormat which, for example, could be 
            ' used to set the pixel format of a bitmap by using it to set
            ' the DestinationFormat of a FormatConvertedBitmap.
            Return myPixelFormat

        End Function 'createPixelFormat
    End Class
End Namespace 'ImagingSnippetGallery

Remarques

Utilisation d'attributs XAMLXAML Attribute Usage

<object property="pixelFormat"/>  

Valeurs XAMLXAML Values

pixelFormatpixelFormat
Un des formats de pixel prédéfinis définis par la PixelFormats classe.One of the predefined pixel formats defined by the PixelFormats class.

Propriétés

BitsPerPixel

Obtient le nombre de bits par pixel de ce PixelFormat.Gets the number of bits-per-pixel (bpp) for this PixelFormat.

Masks

Obtient une collection de masques de bits associés au PixelFormat.Gets a collection of bit masks associated with the PixelFormat.

Méthodes

Equals(Object)

Détermine si l'objet spécifié est identique à l'objet actuel.Determines whether the specified object is equal to the current object.

Equals(PixelFormat)

Détermine si le format de pixel est égal au PixelFormat indiqué.Determines whether the pixel format equals the given PixelFormat.

Equals(PixelFormat, PixelFormat)

Détermine si les instances de PixelFormat spécifiées sont considérées comme égales.Determines whether the specified PixelFormat instances are considered equal.

GetHashCode()

Crée un code de hachage à partir de la valeur Masks de ce format de pixel.Creates a hash code from this pixel format's Masks value.

ToString()

Crée une représentation sous forme de chaîne de ce PixelFormat.Creates a string representation of this PixelFormat.

Opérateurs

Equality(PixelFormat, PixelFormat)

Compare si deux instances PixelFormat sont égales.Compares two PixelFormat instances for equality.

Inequality(PixelFormat, PixelFormat)

Compare deux instances PixelFormat pour vérifier leur inégalité.Compares two PixelFormat instances for inequality.

S’applique à

Voir aussi