ImageAttributes.SetOutputChannel 方法

定義

命名空間:: System.Drawing.Imaging

組件:: System.Drawing.Common.dll

組件:: System.Drawing.dll

套件:: System.Drawing.Common v11.0.0-rc.1.26425.128

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

設定 CMYK（青-洋紅-黃-黑）輸出通道。

多載

名稱	Description
SetOutputChannel(ColorChannelFlag)	預設類別的 CMYK（青-品紅-黃-黑）輸出通道。
SetOutputChannel(ColorChannelFlag, ColorAdjustType)	設定指定類別的CMYK（青-洋紅-黃-黑）輸出通道。

SetOutputChannel(ColorChannelFlag)

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

預設類別的 CMYK（青-品紅-黃-黑）輸出通道。

public:
 void SetOutputChannel(System::Drawing::Imaging::ColorChannelFlag flags);

public void SetOutputChannel(System.Drawing.Imaging.ColorChannelFlag flags);

member this.SetOutputChannel : System.Drawing.Imaging.ColorChannelFlag -> unit

Public Sub SetOutputChannel (flags As ColorChannelFlag)

參數

flags: ColorChannelFlag

其中一個元素 ColorChannelFlag 指定輸出通道。

範例

以下程式碼範例示範如何使用此 SetOutputChannel 方法。要執行此範例，請將以下程式碼貼上到 Windows 表單中。處理該型態的Paint事件，並呼叫 ShowOutputChannels，通過 e 。PaintEventArgs

private void ShowOutputChannels(PaintEventArgs e)
{
    //Create a bitmap from a file.
    Bitmap bmp1 = new Bitmap("c:\\fakePhoto.jpg");

    // Create a new bitmap from the original, resizing it for this example.
    Bitmap bmp2 = new Bitmap(bmp1, new Size(80, 80));

    bmp1.Dispose();

    // Create an ImageAttributes object.
    ImageAttributes imgAttributes = new ImageAttributes();

    // Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10);

    // Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC,
        System.Drawing.Imaging.ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 10, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(10, 100, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 100, bmp2.Width, bmp2.Height), 0, 0,
        bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK,

        System.Drawing.Imaging.ColorAdjustType.Bitmap);
    e.Graphics.DrawImage(bmp2, new Rectangle(10, 190, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    //Dispose of the bitmap.
    bmp2.Dispose();
}

Private Sub ShowOutputChannels(ByVal e As PaintEventArgs)

    'Create a bitmap from a file.
    Dim bmp1 As New Bitmap("c:\fakePhoto.jpg")

    ' Create a new bitmap from the original, resizing it for this example.
    Dim bmp2 As New Bitmap(bmp1, New Size(80, 80))

    bmp1.Dispose()

    ' Create an ImageAttributes object.
    Dim imgAttributes As New System.Drawing.Imaging.ImageAttributes()

    ' Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10)

    ' Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 10, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 190, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    'Dispose of the bitmap.
    bmp2.Dispose()

End Sub

備註

你可以用這個 SetOutputChannel 方法將影像轉換成 CMYK 色彩空間，並檢查其中一個 CMYK 色彩通道的強度。舉例來說，假設你建立一個 ImageAttributes 物件，並將其點陣圖輸出通道設為 ColorChannelC。如果你把該 ImageAttributes 物件的路徑傳給方法， DrawImage 會計算出每個像素的青色分量，渲染影像中的每個像素都是灰色，代表其青色通道的強度。同樣地，你也可以渲染出顯示洋紅、黃色和黑色通道強度的影像。

物件 ImageAttributes 會維持五個調整類別的色彩與灰階設定：預設、點陣圖、筆刷、筆觸和文字。例如，你可以為預設類別指定輸出通道，為點陣類別指定不同的輸出通道。

默認色彩調整和灰階調整設定適用於沒有自己調整設定的所有類別。例如，如果你從未為點陣圖類別指定任何調整設定，預設設定會套用到點陣圖類別。

適用於

SetOutputChannel(ColorChannelFlag, ColorAdjustType)

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

來源:: ImageAttributes.cs

設定指定類別的CMYK（青-洋紅-黃-黑）輸出通道。

public:
 void SetOutputChannel(System::Drawing::Imaging::ColorChannelFlag flags, System::Drawing::Imaging::ColorAdjustType type);

public void SetOutputChannel(System.Drawing.Imaging.ColorChannelFlag flags, System.Drawing.Imaging.ColorAdjustType type);

member this.SetOutputChannel : System.Drawing.Imaging.ColorChannelFlag * System.Drawing.Imaging.ColorAdjustType -> unit

Public Sub SetOutputChannel (flags As ColorChannelFlag, type As ColorAdjustType)

參數

flags: ColorChannelFlag

其中一個元素 ColorChannelFlag 指定輸出通道。

type: ColorAdjustType

其中的一個元素 ColorAdjustType 指定輸出通道所設定的類別。

範例

private void ShowOutputChannels(PaintEventArgs e)
{
    //Create a bitmap from a file.
    Bitmap bmp1 = new Bitmap("c:\\fakePhoto.jpg");

    // Create a new bitmap from the original, resizing it for this example.
    Bitmap bmp2 = new Bitmap(bmp1, new Size(80, 80));

    bmp1.Dispose();

    // Create an ImageAttributes object.
    ImageAttributes imgAttributes = new ImageAttributes();

    // Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10);

    // Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC,
        System.Drawing.Imaging.ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 10, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(10, 100, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY,
        ColorAdjustType.Bitmap);

    e.Graphics.DrawImage(bmp2, new Rectangle(100, 100, bmp2.Width, bmp2.Height), 0, 0,
        bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    // Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK,

        System.Drawing.Imaging.ColorAdjustType.Bitmap);
    e.Graphics.DrawImage(bmp2, new Rectangle(10, 190, bmp2.Width, bmp2.Height),
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes);

    //Dispose of the bitmap.
    bmp2.Dispose();
}

Private Sub ShowOutputChannels(ByVal e As PaintEventArgs)

    'Create a bitmap from a file.
    Dim bmp1 As New Bitmap("c:\fakePhoto.jpg")

    ' Create a new bitmap from the original, resizing it for this example.
    Dim bmp2 As New Bitmap(bmp1, New Size(80, 80))

    bmp1.Dispose()

    ' Create an ImageAttributes object.
    Dim imgAttributes As New System.Drawing.Imaging.ImageAttributes()

    ' Draw the image unaltered.
    e.Graphics.DrawImage(bmp2, 10, 10)

    ' Draw the image, showing the intensity of the cyan channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelC, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 10, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the magenta channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelM, ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the yellow channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelY, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(100, 100, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    ' Draw the image, showing the intensity of the black channel.
    imgAttributes.SetOutputChannel(ColorChannelFlag.ColorChannelK, _
        ColorAdjustType.Bitmap)

    e.Graphics.DrawImage(bmp2, New Rectangle(10, 190, bmp2.Width, bmp2.Height), _
        0, 0, bmp2.Width, bmp2.Height, GraphicsUnit.Pixel, imgAttributes)

    'Dispose of the bitmap.
    bmp2.Dispose()

End Sub

備註

一旦您指定特定類別的色彩調整或灰階調整設定，預設調整設定就不再套用至該類別。例如，假設您指定預設類別的調整設定集合。如果你透過傳遞 Bitmap 方法 SetOutputChannel 設定點陣圖類別的輸出通道，預設調整設定不會套用到點陣圖。

適用於

意見反應

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