Color.Transparent Eigenschaft

Definition

Namespace:

System.Drawing

Assembly:

System.Drawing.Primitives.dll

Assembly:

System.Drawing.dll

Assembly:

netstandard.dll

Ruft eine systemdefinierte Farbe ab.

public:
 static property System::Drawing::Color Transparent { System::Drawing::Color get(); };

public static System.Drawing.Color Transparent { get; }

member this.Transparent : System.Drawing.Color

Public Shared ReadOnly Property Transparent As Color

Eigenschaftswert

Color

Eine Color, die eine systemdefinierte Farbe darstellt.

Beispiele

Im folgenden Codebeispiel wird veranschaulicht, wie die Transparent Eigenschaft verwendet wird. Dieses Beispiel wurde für die Verwendung mit Windows Forms entwickelt. Fügen Sie den Code in ein Formular ein, das zwei Schaltflächen namens Button1 und Button2. Rufen Sie die UseTransparentProperty Methode im Konstruktor des Formulars auf.

private:
   void UseTransparentProperty()
   {
      // Set up the PictureBox to display the entire image, and
      // to cover the entire client area.
      PictureBox1->SizeMode = PictureBoxSizeMode::StretchImage;
      PictureBox1->Dock = DockStyle::Fill;
      try
      {
         // Set the Image property of the PictureBox to an image retrieved
         // from the file system.
         PictureBox1->Image = Image::FromFile( "C:\\Documents and Settings\\All Users\\"
         "Documents\\My Pictures\\Sample Pictures\\sunset.jpg" );

         // Set the Parent property of Button1 and Button2 to the 
         // PictureBox.
         Button1->Parent = PictureBox1;
         Button2->Parent = PictureBox1;

         // Set the Color property of both buttons to transparent. 
         // With this setting the buttons assume the color of their
         // parent.
         Button1->BackColor = Color::Transparent;
         Button2->BackColor = Color::Transparent;
      }
      catch ( System::IO::FileNotFoundException^ ) 
      {
         MessageBox::Show( "There was an error."
         "Make sure the image file path is valid." );
      }
   }

private void UseTransparentProperty()
{

    // Set up the PictureBox to display the entire image, and
    // to cover the entire client area.
    PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
    PictureBox1.Dock = DockStyle.Fill;

    try
    {
        // Set the Image property of the PictureBox to an image retrieved
        // from the file system.
        PictureBox1.Image = 
            Image.FromFile("C:\\Documents and Settings\\All Users\\" +
            "Documents\\My Pictures\\Sample Pictures\\sunset.jpg");

        // Set the Parent property of Button1 and Button2 to the 
        // PictureBox.
        Button1.Parent = PictureBox1;
        Button2.Parent = PictureBox1;

        // Set the Color property of both buttons to transparent. 
        // With this setting the buttons assume the color of their
        // parent.
        Button1.BackColor = Color.Transparent;
        Button2.BackColor = Color.Transparent;
    }
    catch(System.IO.FileNotFoundException)
    {
        MessageBox.Show("There was an error." +
            "Make sure the image file path is valid.");
    }
}

Private Sub UseTransparentProperty()

    ' Set up the PictureBox to display the entire image, and
    ' to cover the entire client area.
    PictureBox1.SizeMode = PictureBoxSizeMode.StretchImage
    PictureBox1.Dock = DockStyle.Fill

    Try
        ' Set the Image property of the PictureBox to an image retrieved
        ' from the file system.
        PictureBox1.Image = _
            Image.FromFile("C:\Documents and Settings\All Users\" _
            & "Documents\My Pictures\Sample Pictures\sunset.jpg")

        ' Set the Parent property of Button1 and Button2 to the 
        ' PictureBox.
        Button1.Parent = PictureBox1
        Button2.Parent = PictureBox1

        ' Set the Color property of both buttons to transparent. 
        ' With this setting, the buttons assume the color of their
        ' parent.
        Button1.BackColor = Color.Transparent
        Button2.BackColor = Color.Transparent

    Catch ex As System.IO.FileNotFoundException
        MessageBox.Show("There was an error." _
        & "Make sure the image file path is valid.")
    End Try


End Sub