BitmapSource.Create Método

Definição

Namespace:

System.Windows.Media.Imaging

Assembly:

PresentationCore.dll

Cria um novo BitmapSource que tem as opções e as propriedades especificadas.

Sobrecargas

Create(Int32, Int32, Double, Double, PixelFormat, BitmapPalette, Array, Int32)	Cria um novo BitmapSource de uma matriz de pixels.
Create(Int32, Int32, Double, Double, PixelFormat, BitmapPalette, IntPtr, Int32, Int32)	Cria um novo BitmapSource com base em uma matriz de pixels armazenados na memória não gerenciada.

Create(Int32, Int32, Double, Double, PixelFormat, BitmapPalette, Array, Int32)

Cria um novo BitmapSource de uma matriz de pixels.

public:
 static System::Windows::Media::Imaging::BitmapSource ^ Create(int pixelWidth, int pixelHeight, double dpiX, double dpiY, System::Windows::Media::PixelFormat pixelFormat, System::Windows::Media::Imaging::BitmapPalette ^ palette, Array ^ pixels, int stride);

public static System.Windows.Media.Imaging.BitmapSource Create (int pixelWidth, int pixelHeight, double dpiX, double dpiY, System.Windows.Media.PixelFormat pixelFormat, System.Windows.Media.Imaging.BitmapPalette palette, Array pixels, int stride);

static member Create : int * int * double * double * System.Windows.Media.PixelFormat * System.Windows.Media.Imaging.BitmapPalette * Array * int -> System.Windows.Media.Imaging.BitmapSource

Public Shared Function Create (pixelWidth As Integer, pixelHeight As Integer, dpiX As Double, dpiY As Double, pixelFormat As PixelFormat, palette As BitmapPalette, pixels As Array, stride As Integer) As BitmapSource

Parâmetros

pixelWidth

Int32

A largura do bitmap.

pixelHeight

Int32

A altura do bitmap.

dpiX

Double

Os pontos horizontais por polegada (dpi) do bitmap.

dpiY

Double

Os pontos verticais por polegada (dpi) do bitmap.

pixelFormat

PixelFormat

O formato de pixel do bitmap.

palette

BitmapPalette

A paleta do bitmap.

pixels

Array

Uma matriz de bytes que representa o conteúdo de uma imagem de bitmap.

stride

Int32

A distância do bitmap.

Retornos

BitmapSource

O BitmapSource que é criado com base na matriz de pixels especificada.

Exemplos

O exemplo a seguir demonstra como usar esse método para criar um novo BitmapSource.

int width = 128;
int height = width;
int stride = width/8;
byte[] pixels = new byte[height*stride];

// Try creating a new image with a custom palette.
List<System.Windows.Media.Color> colors = new List<System.Windows.Media.Color>();
colors.Add(System.Windows.Media.Colors.Red);
colors.Add(System.Windows.Media.Colors.Blue);
colors.Add(System.Windows.Media.Colors.Green);
BitmapPalette myPalette = new BitmapPalette(colors);

// Creates a new empty image with the pre-defined palette

BitmapSource image = BitmapSource.Create(
    width,
    height,
    96,
    96,
    PixelFormats.Indexed1,
    myPalette, 
    pixels, 
    stride);

FileStream stream = new FileStream("empty.tif", FileMode.Create);
TiffBitmapEncoder encoder = new TiffBitmapEncoder();
TextBlock myTextBlock = new TextBlock();
myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString();
encoder.Frames.Add(BitmapFrame.Create(image));
MessageBox.Show(myPalette.Colors.Count.ToString());
encoder.Save(stream);

Dim width As Integer = 128
Dim height As Integer = width
Dim stride As Integer = CType(width / 8, Integer)
Dim pixels(height * stride) As Byte

' Try creating a new image with a custom palette.
Dim colors As New List(Of System.Windows.Media.Color)()
colors.Add(System.Windows.Media.Colors.Red)
colors.Add(System.Windows.Media.Colors.Blue)
colors.Add(System.Windows.Media.Colors.Green)
Dim myPalette As New BitmapPalette(colors)

' Creates a new empty image with the pre-defined palette
Dim image As BitmapSource = System.Windows.Media.Imaging.BitmapSource.Create(width, height, 96, 96, PixelFormats.Indexed1, myPalette, pixels, stride)
Dim stream As New FileStream("empty.tif", FileMode.Create)
Dim encoder As New TiffBitmapEncoder()
Dim myTextBlock As New TextBlock()
myTextBlock.Text = "Codec Author is: " + encoder.CodecInfo.Author.ToString()
encoder.Frames.Add(BitmapFrame.Create(image))
MessageBox.Show(myPalette.Colors.Count.ToString())
encoder.Save(stream)

Confira também

• PixelFormats
• BitmapPalette

Create(Int32, Int32, Double, Double, PixelFormat, BitmapPalette, IntPtr, Int32, Int32)

Cria um novo BitmapSource com base em uma matriz de pixels armazenados na memória não gerenciada.

public:
 static System::Windows::Media::Imaging::BitmapSource ^ Create(int pixelWidth, int pixelHeight, double dpiX, double dpiY, System::Windows::Media::PixelFormat pixelFormat, System::Windows::Media::Imaging::BitmapPalette ^ palette, IntPtr buffer, int bufferSize, int stride);

public static System.Windows.Media.Imaging.BitmapSource Create (int pixelWidth, int pixelHeight, double dpiX, double dpiY, System.Windows.Media.PixelFormat pixelFormat, System.Windows.Media.Imaging.BitmapPalette palette, IntPtr buffer, int bufferSize, int stride);

static member Create : int * int * double * double * System.Windows.Media.PixelFormat * System.Windows.Media.Imaging.BitmapPalette * nativeint * int * int -> System.Windows.Media.Imaging.BitmapSource

Public Shared Function Create (pixelWidth As Integer, pixelHeight As Integer, dpiX As Double, dpiY As Double, pixelFormat As PixelFormat, palette As BitmapPalette, buffer As IntPtr, bufferSize As Integer, stride As Integer) As BitmapSource

Parâmetros

pixelWidth

Int32

A largura do bitmap.

pixelHeight

Int32

A altura do bitmap.

dpiX

Double

Os pontos horizontais por polegada (dpi) do bitmap.

dpiY

Double

Os pontos verticais por polegada (dpi) do bitmap.

pixelFormat

PixelFormat

O formato de pixel do bitmap.

palette

BitmapPalette

A paleta do bitmap.

buffer

IntPtr

nativeint

Um ponteiro para o buffer que contém os dados de bitmap na memória.

bufferSize

Int32

O tamanho do buffer.

stride

Int32

A distância do bitmap.

Retornos

BitmapSource

Um BitmapSource criado com base na matriz de pixels na memória não gerenciada.