Encoder.SaveFlag フィールドとは何？わかりやすく解説 Weblio辞書

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.NET Framework クラスライブラリリファレンス

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Encoder.SaveFlag フィールド

フラグ保存パラメータ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 オブジェクトを表します。

名前空間: System.Drawing.Imaging
アセンブリ: System.Drawing (system.drawing.dll 内)
構文

Visual Basic (宣言)

Public Shared ReadOnly SaveFlag
 As Encoder

Visual Basic (使用法)

Dim value As Encoder

value = Encoder.SaveFlag

public static readonly Encoder SaveFlag

C++

public:
static initonly Encoder^ SaveFlag

public static final Encoder SaveFlag

JScript

public static final var
 SaveFlag : Encoder

使用例

BMP ファイル、JPEG ファイル、および PNG ファイルから 3 つの Bitmap オブジェクトを作成する例を次に示します。このコードは、3 つのイメージすべてを複数フレームの、単一の TIFF ファイルに保存します。

Visual Basic

Imports System
Imports System.Drawing
Imports System.Drawing.Imaging


Class Example_MultiFrame
    
    Public Shared Sub Main()
 
        Dim multi As Bitmap
        Dim page2 As Bitmap
        Dim page3 As Bitmap
        Dim myImageCodecInfo As ImageCodecInfo
        Dim myEncoder As Encoder
        Dim myEncoderParameter As EncoderParameter
        Dim myEncoderParameters As EncoderParameters
        
        ' Create three Bitmap objects.
        multi = New Bitmap("Shapes.bmp")
        page2 = New Bitmap("Iron.jpg")
        page3 = New Bitmap("House.png")
        
        ' Get an ImageCodecInfo object that represents the TIFF codec.
        myImageCodecInfo = GetEncoderInfo("image/tiff")
        
        ' Create an Encoder object based on the GUID
        ' for the SaveFlag parameter category.
        myEncoder = Encoder.SaveFlag
        
        ' 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 first page (frame).
        myEncoderParameter = New EncoderParameter(myEncoder, Fix(EncoderValue.MultiFrame))
        myEncoderParameters.Param(0) = myEncoderParameter
        multi.Save("Multiframe.tiff", myImageCodecInfo,
 myEncoderParameters)
        
        ' Save the second page (frame).
        myEncoderParameter = New EncoderParameter(myEncoder, Fix(EncoderValue.FrameDimensionPage))
        myEncoderParameters.Param(0) = myEncoderParameter
        multi.SaveAdd(page2, myEncoderParameters)
        
        ' Save the third page (frame).
        myEncoderParameter = New EncoderParameter(myEncoder, Fix(EncoderValue.FrameDimensionPage))
        myEncoderParameters.Param(0) = myEncoderParameter
        multi.SaveAdd(page3, myEncoderParameters)
        
        ' Close the multiple-frame file.
        myEncoderParameter = New EncoderParameter(myEncoder, Fix(EncoderValue.Flush))
        myEncoderParameters.Param(0) = myEncoderParameter
        multi.SaveAdd(myEncoderParameters)
    
    End Sub 'Main
    
    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 'GetEncoderInfo
End Class 'Example_MultiFrame

using System;
using System.Drawing;
using System.Drawing.Imaging;
class Example_MultiFrame
{
    public static void Main()
    {
        Bitmap multi;
        Bitmap page2;
        Bitmap page3;
        ImageCodecInfo myImageCodecInfo;
        Encoder myEncoder;
        EncoderParameter myEncoderParameter;
        EncoderParameters myEncoderParameters;
                     
        // Create three Bitmap objects.
        multi = new Bitmap("Shapes.bmp");
        page2 = new Bitmap("Iron.jpg");
        page3 = new Bitmap("House.png");
                     
        // Get an ImageCodecInfo object that represents the TIFF codec.
        myImageCodecInfo = GetEncoderInfo("image/tiff");
                     
        // Create an Encoder object based on the GUID
        // for the SaveFlag parameter category.
        myEncoder = Encoder.SaveFlag;
                     
        // 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 first page (frame).
        myEncoderParameter = new EncoderParameter(
            myEncoder,
            (long)EncoderValue.MultiFrame);
        myEncoderParameters.Param[0] = myEncoderParameter;
        multi.Save("Multiframe.tiff", myImageCodecInfo, myEncoderParameters);
                     
        // Save the second page (frame).
        myEncoderParameter = new EncoderParameter(
            myEncoder,
            (long)EncoderValue.FrameDimensionPage);
        myEncoderParameters.Param[0] = myEncoderParameter;
        multi.SaveAdd(page2, myEncoderParameters);
                     
        // Save the third page (frame).
        myEncoderParameter = new EncoderParameter(
            myEncoder,
            (long)EncoderValue.FrameDimensionPage);
        myEncoderParameters.Param[0] = myEncoderParameter;
        multi.SaveAdd(page3, myEncoderParameters);
                     
        // Close the multiple-frame file.
        myEncoderParameter = new EncoderParameter(
            myEncoder,
            (long)EncoderValue.Flush);
        myEncoderParameters.Param[0] = myEncoderParameter;
        multi.SaveAdd(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;
    }
}

C++

#using <System.Drawing.dll>

using namespace System;
using namespace System::Drawing;
using namespace System::Drawing::Imaging;
static ImageCodecInfo^ GetEncoderInfo( String^ mimeType );
int main()
{
   Bitmap^ multi;
   Bitmap^ page2;
   Bitmap^ page3;
   ImageCodecInfo^ myImageCodecInfo;
   Encoder^ myEncoder;
   EncoderParameter^ myEncoderParameter;
   EncoderParameters^ myEncoderParameters;
   
   // Create three Bitmap objects.
   multi = gcnew Bitmap( "Shapes.bmp" );
   page2 = gcnew Bitmap( "Iron.jpg" );
   page3 = gcnew Bitmap( "House.png" );
   
   // Get an ImageCodecInfo object that represents the TIFF codec.
   myImageCodecInfo = GetEncoderInfo( "image/tiff" );
   
   // Create an Encoder object based on the GUID
   // for the SaveFlag parameter category.
   myEncoder = Encoder::SaveFlag;
   
   // 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 first page (frame).
   myEncoderParameter = gcnew EncoderParameter( myEncoder,(__int64)EncoderValue::MultiFrame
 );
   myEncoderParameters->Param[ 0 ] = myEncoderParameter;
   multi->Save( "Multiframe.tiff", myImageCodecInfo, myEncoderParameters
 );
   
   // Save the second page (frame).
   myEncoderParameter = gcnew EncoderParameter( myEncoder,(__int64)EncoderValue::FrameDimensionPage
 );
   myEncoderParameters->Param[ 0 ] = myEncoderParameter;
   multi->SaveAdd( page2, myEncoderParameters );
   
   // Save the third page (frame).
   myEncoderParameter = gcnew EncoderParameter( myEncoder,(__int64)EncoderValue::FrameDimensionPage
 );
   myEncoderParameters->Param[ 0 ] = myEncoderParameter;
   multi->SaveAdd( page3, myEncoderParameters );
   
   // Close the multiple-frame file.
   myEncoderParameter = gcnew EncoderParameter( myEncoder,(__int64)EncoderValue::Flush
 );
   myEncoderParameters->Param[ 0 ] = myEncoderParameter;
   multi->SaveAdd( 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;
}

import System.* ;
import System.Drawing.* ;
import System.Drawing.Imaging.* ;

class Example_MultiFrame
{
    public static void main(String[]
 args)
    {
        Bitmap multi;
        Bitmap page2;
        Bitmap page3;
        ImageCodecInfo myImageCodecInfo;
        Encoder myEncoder;
        EncoderParameter myEncoderParameter;
        EncoderParameters myEncoderParameters;
        
        // Create three Bitmap objects.
        multi = new Bitmap("Shapes.bmp");
        page2 = new Bitmap("Iron.jpg");
        page3 = new Bitmap("House.png");
        
        // Get an ImageCodecInfo object that represents the TIFF codec.
        myImageCodecInfo = GetEncoderInfo("image/tiff");
        
        // Create an Encoder object based on the GUID
        // for the SaveFlag parameter category.
        myEncoder = Encoder.SaveFlag;
        
        // 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 first page (frame).
        myEncoderParameter = new EncoderParameter(myEncoder,
                            (long)(EncoderValue.MultiFrame));
        myEncoderParameters.get_Param().set_Item( 0 , myEncoderParameter );
        multi.Save("Multiframe.tiff", myImageCodecInfo, myEncoderParameters);
        
        // Save the second page (frame).
        myEncoderParameter = new EncoderParameter(myEncoder,
                            (long)(EncoderValue.FrameDimensionPage));
        myEncoderParameters.get_Param().set_Item(0, myEncoderParameter);
        multi.SaveAdd(page2, myEncoderParameters);
        
        // Save the third page (frame).
        myEncoderParameter = new EncoderParameter(myEncoder, 
                            (long)(EncoderValue.FrameDimensionPage));
        myEncoderParameters.get_Param().set_Item(0, myEncoderParameter);
        multi.SaveAdd(page3, myEncoderParameters);
        
        // Close the multiple-frame file.
        myEncoderParameter = new EncoderParameter(myEncoder,
                            (long)(EncoderValue.Flush));
        myEncoderParameters.get_Param().set_Item(0, myEncoderParameter);
        multi.SaveAdd(myEncoderParameters);
    } //main
 
    private static ImageCodecInfo GetEncoderInfo(String
 mimeType) 
    {
        int j;
        ImageCodecInfo encoders[];
        encoders = ImageCodecInfo.GetImageEncoders();

        for(j = 0; j < encoders.length; j++) {
            if (encoders[j].get_MimeType().Equals(mimeType)) {
                return encoders[j];
            }
        } 
        return null ;
    } //GetEncoderInfo
} //Example_MultiFrame

プラットフォーム

バージョン情報

.NET Framework
サポート対象 : 2.0、1.1、1.0

参照

関連項目
Encoder クラス
Encoder メンバ
System.Drawing.Imaging 名前空間

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Encoder.SaveFlag フィールドとは？ わかりやすく解説

Encoder.SaveFlag フィールド

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Encoder.SaveFlag フィールドとは？わかりやすく解説