ImageCodecInfo.GetImageEncoders Méthode

Définition

Espace de noms:

System.Drawing.Imaging

Assembly:

System.Drawing.Common.dll

Paquet:

System.Drawing.Common v9.0.0-preview.6.24327.6

Source:

ImageCodecInfo.cs

Retourne un tableau d’objets ImageCodecInfo qui contiennent des informations sur les encodeurs d’images intégrés à GDI+.

public:
 static cli::array <System::Drawing::Imaging::ImageCodecInfo ^> ^ GetImageEncoders();

public static System.Drawing.Imaging.ImageCodecInfo[] GetImageEncoders ();

static member GetImageEncoders : unit -> System.Drawing.Imaging.ImageCodecInfo[]

Public Shared Function GetImageEncoders () As ImageCodecInfo()

Retours

ImageCodecInfo[]

Tableau d’objets ImageCodecInfo. Chaque objet ImageCodecInfo du tableau contient des informations sur l’un des encodeurs d’images intégrés.

Exemples

L’exemple suivant est conçu pour une utilisation avec Windows Forms et nécessite PaintEventArgse, qui est un paramètre du gestionnaire d’événements Paint. Le code utilise la méthode GetImageEncoders pour récupérer toutes les informations de codec pour tous les encodeurs d’images et codecs installés, puis dessine toutes les informations relatives à chaque codec à l’écran.

private:
    void GetImageEncodersExample(PaintEventArgs^ e)
    {
        // Get an array of available codecs.
        array<ImageCodecInfo^>^ codecInfo;
        codecInfo = ImageCodecInfo::GetImageEncoders();
        int numCodecs = codecInfo->GetLength(0);

        //numCodecs = 1;

        // Set up display variables.
        Color^ foreColor = Color::Black;
        Drawing::Font^ font = gcnew Drawing::Font("Arial", 8);

        // Check to determine whether any codecs were found.
        if (numCodecs > 0)
        {
            // Set up an array to hold codec information. There are 9
            // information elements plus 1 space for each codec, so 10
            // times the number of codecs found is allocated.
            array<String^>^ codecInfoStrings = 
                gcnew array<String^>(numCodecs * 10);

            // Write all the codec information to the array.
            for (int i = 0; i < numCodecs; i++)
            {
                codecInfoStrings[i * 10] = "Codec Name = " +
                    codecInfo[i]->CodecName;
                codecInfoStrings[(i * 10) + 1] = "Class ID = " +
                    codecInfo[i]->Clsid.ToString();
                codecInfoStrings[(i * 10) + 2] = "DLL Name = " +
                    codecInfo[i]->DllName;
                codecInfoStrings[(i * 10) + 3] = "Filename Ext. = " +
                    codecInfo[i]->FilenameExtension;
                codecInfoStrings[(i * 10) + 4] = "Flags = " +
                    codecInfo[i]->Flags.ToString();
                codecInfoStrings[(i * 10) + 5] = "Format Descrip. = " +
                    codecInfo[i]->FormatDescription;
                codecInfoStrings[(i * 10) + 6] = "Format ID = " +
                    codecInfo[i]->FormatID.ToString();
                codecInfoStrings[(i * 10) + 7] = "MimeType = " +
                    codecInfo[i]->MimeType;
                codecInfoStrings[(i * 10) + 8] = "Version = " +
                    codecInfo[i]->Version.ToString();
                codecInfoStrings[(i * 10) + 9] = " ";
            }
            int numCodecInfo = codecInfoStrings->GetLength(0);

            // Render all of the information to the screen.
            int j = 20;
            for (int i = 0; i < numCodecInfo; i++)
            {
                e->Graphics->DrawString(codecInfoStrings[i],
                    font, gcnew SolidBrush(*foreColor), 20, (float)j);
                j += 12;
            }
        }
        else
            e->Graphics->DrawString("No Codecs Found",
                font, gcnew SolidBrush(*foreColor), 20, 20);
    }

private void GetImageEncodersExample(PaintEventArgs e)
{
             
    // Get an array of available codecs.
    ImageCodecInfo[] myCodecs;
    myCodecs = ImageCodecInfo.GetImageEncoders();
    int numCodecs = myCodecs.GetLength(0);
             
    //numCodecs = 1;
             
    // Set up display variables.
    Color foreColor = Color.Black;
    Font font = new Font("Arial", 8);
    int i = 0;
             
    // Check to determine whether any codecs were found.
    if(numCodecs > 0)
    {
             
        // Set up an array to hold codec information. There are 9
             
        // information elements plus 1 space for each codec, so 10 times
             
        // the number of codecs found is allocated.
        string[] myCodecInfo = new string[numCodecs*10];
             
        // Write all the codec information to the array.
        for(i=0;i<numCodecs;i++)
        {
            myCodecInfo[i*10] = "Codec Name = " + myCodecs[i].CodecName;
            myCodecInfo[(i*10)+1] = "Class ID = " +
                myCodecs[i].Clsid.ToString();
            myCodecInfo[(i*10)+2] = "DLL Name = " + myCodecs[i].DllName;
            myCodecInfo[(i*10)+3] = "Filename Ext. = " +
                myCodecs[i].FilenameExtension;
            myCodecInfo[(i*10)+4] = "Flags = " +
                myCodecs[i].Flags.ToString();
            myCodecInfo[(i*10)+5] = "Format Descrip. = " +
                myCodecs[i].FormatDescription;
            myCodecInfo[(i*10)+6] = "Format ID = " +
                myCodecs[i].FormatID.ToString();
            myCodecInfo[(i*10)+7] = "MimeType = " + myCodecs[i].MimeType;
            myCodecInfo[(i*10)+8] = "Version = " +
                myCodecs[i].Version.ToString();
            myCodecInfo[(i*10)+9] = " ";
        }
        int numMyCodecInfo = myCodecInfo.GetLength(0);
             
        // Render all of the information to the screen.
        int j=20;
        for(i=0;i<numMyCodecInfo;i++)
        {
            e.Graphics.DrawString(myCodecInfo[i],
                font,
                new SolidBrush(foreColor),
                20,
                j);
            j+=12;
        }
    }
    else
        e.Graphics.DrawString("No Codecs Found",
            font,
            new SolidBrush(foreColor),
            20,
            20);
}

Public Sub GetImageEncodersExample(ByVal e As PaintEventArgs)

    ' Get an array of available codecs.
    Dim myEncoders() As ImageCodecInfo
    myEncoders = ImageCodecInfo.GetImageEncoders()
    Dim numEncoders As Integer = myEncoders.GetLength(0)
    Dim strNumEncoders As String = numEncoders.ToString()
    Dim foreColor As Color = Color.Black
    Dim font As New Font("Arial", 8)
    Dim i As Integer = 0

    ' Get the info. for all encoders in the array.
    If numEncoders > 0 Then
        Dim myEncoderInfo(numEncoders * 10) As String
        For i = 0 To numEncoders - 1
            myEncoderInfo((i * 10)) = "Codec Name = " _
            + myEncoders(i).CodecName
            myEncoderInfo((i * 10 + 1)) = "Class ID = " _
            + myEncoders(i).Clsid.ToString()
            myEncoderInfo((i * 10 + 2)) = "DLL Name = " _
            + myEncoders(i).DllName
            myEncoderInfo((i * 10 + 3)) = "Filename Ext. = " _
            + myEncoders(i).FilenameExtension
            myEncoderInfo((i * 10 + 4)) = "Flags = " _
            + myEncoders(i).Flags.ToString()
            myEncoderInfo((i * 10 + 5)) = "Format Descrip. = " _
            + myEncoders(i).FormatDescription
            myEncoderInfo((i * 10 + 6)) = "Format ID = " _
            + myEncoders(i).FormatID.ToString()
            myEncoderInfo((i * 10 + 7)) = "MimeType = " _
            + myEncoders(i).MimeType
            myEncoderInfo((i * 10 + 8)) = "Version = " _
            + myEncoders(i).Version.ToString()
            myEncoderInfo((i * 10 + 9)) = " "
        Next i
        Dim numMyEncoderInfo As Integer = myEncoderInfo.GetLength(0)

        ' Render to the screen all the information.
        Dim j As Integer = 20
        For i = 0 To numMyEncoderInfo - 1
            e.Graphics.DrawString(myEncoderInfo(i), font, _
            New SolidBrush(foreColor), 20, j)
            j += 12
        Next i
    Else
        e.Graphics.DrawString("No Encoders Found", font, _
        New SolidBrush(foreColor), 20, 20)
    End If
End Sub