Encoder.ColorDepth フィールド

定義

色深度パラメーター カテゴリのグローバル一意識別子を使用して初期化される Encoder オブジェクト。An Encoder object that is initialized with the globally unique identifier for the color depth parameter category.

public: static initonly System::Drawing::Imaging::Encoder ^ ColorDepth;
public static readonly System.Drawing.Imaging.Encoder ColorDepth;
 staticval mutable ColorDepth : System.Drawing.Imaging.Encoder
Public Shared ReadOnly ColorDepth As Encoder 

フィールド値

次の例ではBitmap 、BMP ファイルからオブジェクトを作成します。The following example creates a Bitmap object from a BMP file. このコードでは、イメージは、ピクセルあたり24ビットの色深度を持つ TIFF ファイルとして保存されます。The code saves the image as a TIFF file that has a color depth of 24 bits per pixel.

#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Drawing::Imaging;
static ImageCodecInfo^ GetEncoderInfo( String^ mimeType );
int main()
{
   Bitmap^ myBitmap;
   ImageCodecInfo^ myImageCodecInfo;
   Encoder^ myEncoder;
   EncoderParameter^ myEncoderParameter;
   EncoderParameters^ myEncoderParameters;
   
   // Create a Bitmap object based on a BMP file.
   myBitmap = gcnew Bitmap( "C:\\Documents and Settings\\All Users\\Documents\\My Music\\music.bmp" );
   
   // Get an ImageCodecInfo object that represents the TIFF codec.
   myImageCodecInfo = GetEncoderInfo( "image/tiff" );
   
   // Create an Encoder object based on the GUID
   // for the ColorDepth parameter category.
   myEncoder = Encoder::ColorDepth;
   
   // Create an EncoderParameters object.
   // An EncoderParameters object has an array of EncoderParameter
   // objects. In this case, there is only one
   // EncoderParameter object in the array.
   myEncoderParameters = gcnew EncoderParameters( 1 );
   
   // Save the image with a color depth of 24 bits per pixel.
   myEncoderParameter = gcnew EncoderParameter( myEncoder,__int64(24) );
   myEncoderParameters->Param[ 0 ] = myEncoderParameter;
   myBitmap->Save( "Shapes24bpp.tiff", myImageCodecInfo, myEncoderParameters );
}

static ImageCodecInfo^ GetEncoderInfo( String^ mimeType )
{
   int j;
   array<ImageCodecInfo^>^encoders;
   encoders = ImageCodecInfo::GetImageEncoders();
   for ( j = 0; j < encoders->Length; ++j )
   {
      if ( encoders[ j ]->MimeType == mimeType )
            return encoders[ j ];

   }
   return nullptr;
}

using System;
using System.Drawing;
using System.Drawing.Imaging;
class Example_SetColorDepth
{
    public static void Main()
    {
        Bitmap myBitmap;
        ImageCodecInfo myImageCodecInfo;
        Encoder myEncoder;
        EncoderParameter myEncoderParameter;
        EncoderParameters myEncoderParameters;
                     
        // Create a Bitmap object based on a BMP file.
        myBitmap = new Bitmap(@"C:\Documents and Settings\All Users\Documents\My Music\music.bmp");
                     
        // Get an ImageCodecInfo object that represents the TIFF codec.
        myImageCodecInfo = GetEncoderInfo("image/tiff");
                     
        // Create an Encoder object based on the GUID
        // for the ColorDepth parameter category.
        myEncoder = Encoder.ColorDepth;
                     
        // Create an EncoderParameters object.
        // An EncoderParameters object has an array of EncoderParameter
        // objects. In this case, there is only one
        // EncoderParameter object in the array.
        myEncoderParameters = new EncoderParameters(1);
                     
        // Save the image with a color depth of 24 bits per pixel.
        myEncoderParameter =
            new EncoderParameter(myEncoder, 24L);
        myEncoderParameters.Param[0] = myEncoderParameter;
        myBitmap.Save("Shapes24bpp.tiff", myImageCodecInfo, myEncoderParameters);
    }

    private static ImageCodecInfo GetEncoderInfo(String mimeType)
    {
        int j;
        ImageCodecInfo[] encoders;
        encoders = ImageCodecInfo.GetImageEncoders();
        for(j = 0; j < encoders.Length; ++j)
        {
            if(encoders[j].MimeType == mimeType)
                return encoders[j];
        }
        return null;
    }
}
Imports System.Drawing
Imports System.Drawing.Imaging

Class Example_SetColorDepth

    Public Shared Sub Main()
        Dim myBitmap As Bitmap
        Dim myImageCodecInfo As ImageCodecInfo
        Dim myEncoder As Encoder
        Dim myEncoderParameter As EncoderParameter
        Dim myEncoderParameters As EncoderParameters

        ' Create a Bitmap object based on a BMP file.
        myBitmap = New Bitmap("C:\Documents and Settings\All Users\Documents\My Music\music.bmp")

        ' Get an ImageCodecInfo object that represents the TIFF codec.
        myImageCodecInfo = GetEncoderInfo("image/tiff")

        ' Create an Encoder object based on the GUID
        ' for the ColorDepth parameter category.
        myEncoder = Encoder.ColorDepth

        ' Create an EncoderParameters object.
        ' An EncoderParameters object has an array of EncoderParameter
        ' objects. In this case, there is only one
        ' EncoderParameter object in the array.
        myEncoderParameters = New EncoderParameters(1)

        ' Save the image with a color depth of 24 bits per pixel.
        myEncoderParameter = New EncoderParameter(myEncoder, CType(24L, Int32))
        myEncoderParameters.Param(0) = myEncoderParameter
        myBitmap.Save("Shapes24bpp.tiff", myImageCodecInfo, myEncoderParameters)

    End Sub


    Private Shared Function GetEncoderInfo(ByVal mimeType As String) As ImageCodecInfo
        Dim j As Integer
        Dim encoders() As ImageCodecInfo
        encoders = ImageCodecInfo.GetImageEncoders()

        j = 0
        While j < encoders.Length
            If encoders(j).MimeType = mimeType Then
                Return encoders(j)
            End If
            j += 1
        End While
        Return Nothing

    End Function
End Class

注釈

イメージエンコーダーにパラメーターを渡すと、パラメーターはEncoderParameterオブジェクトにカプセル化されます。When you pass a parameter to an image encoder, the parameter is encapsulated in an EncoderParameter object. EncoderParameterオブジェクトのフィールドの1つは、パラメーターのカテゴリを指定する GUID です。One of the fields of the EncoderParameter object is a GUID that specifies the category of the parameter. Encoderクラスの静的フィールドを使用して、目的Encoderのカテゴリのパラメーターを含むを取得します。Use the static fields of the Encoder class to retrieve an Encoder that contains parameters of the desired category.

複数のカテゴリに属する受信パラメーター GDI+GDI+に組み込まれているイメージエンコーダー。The image encoders that are built into GDI+GDI+ receive parameters that belong to several categories. 次の表に、すべてのカテゴリと、各カテゴリに関連付けられている GUID の一覧を示します。The following table lists all the categories and the GUID associated with each category.

ChrominanceTable
f2e455dc-09b3-4316-8260-676ada32481cf2e455dc-09b3-4316-8260-676ada32481c

ColorDepth
66087055-ad66-4c7c-9a18-38a2310b833766087055-ad66-4c7c-9a18-38a2310b8337

Compression
e09d739d-ccd4-44ee-8eba-3fbf8be4fc58e09d739d-ccd4-44ee-8eba-3fbf8be4fc58

LuminanceTable
edb33bce-0266-4a77-b904-27216099e717edb33bce-0266-4a77-b904-27216099e717

Quality
1d5be4b5-fa4a-452d-9cdd-5db35105e7eb1d5be4b5-fa4a-452d-9cdd-5db35105e7eb

RenderMethod
6d42c53a-229a-4825-8bb7-5c99e2b9a8b86d42c53a-229a-4825-8bb7-5c99e2b9a8b8

SaveFlag
292266fc-ac40-47bf-8cfc-a85b89a655de292266fc-ac40-47bf-8cfc-a85b89a655de

ScanMethod
3a4e2661-3109-4e56-8536-42c156e7dcfa3a4e2661-3109-4e56-8536-42c156e7dcfa

Transformation
8d0eb2d1-a58e-4ea8-aa14-108074b7b6f98d0eb2d1-a58e-4ea8-aa14-108074b7b6f9

Version
24d18c76-814a-41a4-bf53-1c219cccf79724d18c76-814a-41a4-bf53-1c219cccf797

適用対象

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